Bibliography of Colorado geology and mining, with subject index : from the earliest explorations to 1912

Name: Bibliography of Colorado geology and mining, with subject index : from the earliest explorations to 1912
Author: Jones, Olive M. (Olive Mary)

Jones, Olive M. (Olive Mary)

Bibliography of Colorado geology and mining, with subject index : from the earliest explorations to 1912

Jones, Olive M. (Olive Mary) · 1914 · Historical

Bibliography of Colorado geology and mining, with subject index : from the earliest explorations to 1912 by Jones, Olive M. (Olive Mary) (1914). Full text…

Public-domain full text preserved in the Mountain Man Mining Library. Original source: archive.org.

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Colorado State Geological Survey

Boulder

R. D. GEORGE, State Geologist

Bulletin 7

Bibliography Of Colorado Geology And

Mining

With Object Index "' !"- :

From The Earliest Explorations

To 1912

By

Olive M. Jones

Denver, Colorado The Smith-Brooks Printing Company, State Printers

Geological Board

His Ex<YiLQN/5x, .fAjL.lAMiote. . 'i. tjdvertior <jf XJolorado

Livingston Fabband President University of Colorado

William G. Haldane Acting President State School of Mines

Charles A. Lory President State Agricultural College

Letter Of Transmittal

State Geological Survey, University op Colorado August 1, 1914.

Oovemor Elias M. Ammons, Chairman, and Members of the Advisory Board of the State Geological Survey.

Obntlemen : I have the honor to transmit herewith Bulletin 7 of the Colorado Geological Survey.

Very respectfully,

R. D. George State Geologist.

Introduction

The geological literature of Colorado is very extensive and has appeared in a very large number of publications. No single library in the United States, much less any library in Colorado, contains copies of all the papers, reports, maps and illustrations bearing on the geology of the state. Much valuable information published in the newspapers of the state and of the country from the early days of western exploration to the present time has been lost beyond recovery.

The authentic geological and geographical literature of Colo- rado may be said to begin with the accounts and reports of the early explorations. The records of the discoveries of Coronado in 1540, and Gscalante in 1776 are followed by the much more complete reports of the American explorers, beginning with Pike in 1805 and 1806; Long in 1820; Bonneville in 1832; Fremont in 1842 to 1853; Gunnison and Beckwith in 1853; and Macomb and Newberry in 1859 and 1860. These reports were published by the War Department, and form an important part of the early literature bearing on the region. Later surveys were made under tlie authority of the Department of the Interior, and extensive reports accompanied by excellent maps were published by the government. The principal organizations which carried on work in the territory now comprising the state of Colorado were as follows: The Geological Exploration of the Fortieth Parallel, under the direction of Mr. Clarence King, from 1867-1872; The Geological and Geographical Survey of the Territories under Dr. F. V. Hayden, from 1867-1879; The Geographical Survey West of the One Hundredth Meridian, under Capt. George M. Wheeler, and the Geographical and Geological Survey of the Rocky Mountain Region, under Maj. J. W. Powell. Many valu- able contributions to the literature of this period are also to be found in the scientific journals and periodicals of the time.

8 liWlnaGftAPHY OF COLORADO GEOLOGY

To.trK*.jrreent Ignited States Geological Survey must be

rreHited-ln" far the greatest amount of recent literature bearing

tl>e geology of Colorado. Many valuable contributions are

../also to be found in the imports of the departments of the state

. of Colorado devoted to geology and mining, together with the

publications of the different institutions of learning within the

state, the publications of the learned societies, and scientific and

mining magazines.

In order that this extensive literature may be made more available to the public a bibliography of Colorado geology has been prepared. It covers the literature%of general and economic geology, paleontology, i)etrology, mineralogy, and mining, from the earliest publications to the end of 1912, and follows, in gen- eral, the plan and arrangement of the bibliographies of North American geology published by the United States Geologicaj Survey. Many of the entries and references in the present work are taken, with little or no change, from the bibliographies of the United States Geological Survey.

The papers, with full title and medium of publication and explanatory note, when the title is not fully self-explanatory, are listed under the authors, arranged in alphabetic order. The author index is followed by an index to the literature lis<ed. In this index the entries will be found in straight alphabetic arrangement. Lists of chemical analyses, minerals described, rocks described, and geologic fomiations describe<l follow imme- diately after the index.

Many of the publications listed in the bibliography are avail- able to the public in the libraries of the following institutions: University of Colorado, State School of Mines, Colorado ('ollege, State Agricultural College, Denver University, and the Colorado Scientific Society. They may also be found in the public libraries of the larger cities, as Denver, Pueblo, and Colorado Springs. If the local library does not possess the publication desired, under the system of inter-library loans the Library of Congress, Newberry, John Crear and other libraries will lend books to libraries for the use of investigators engaged in serious research.

The author wishes to acknowleilge the valuable assistance rendered by Professor Ralph D. Crawford, Professor Junius Henderson, and Professor W. E. McCourt, and to Professor II. D. George the autlior is especially grateful for criticisms and sug- gestions during the progress of the entire work. Thanks are also

Biblioguapuy Of Colokado Geology 9

ilue the Denver Public libmry, the State tohool of Mines library, and the Colorado Scientifir Society library for the special privi- lege of consulting their files of periodicals not immediately accessible to the Geological Survey.

Publications Referred to

Academy of Natural Sciences of Philadelphia: Proceedings, Journal.

Phildelphla, Pa. American Academy of Arts and Sciences : Proceedings. Boston, Mass. American Association for the Advancement of Science: Proceedings.

Salem, Mass. American Ceramic Society: Transactions. Columbus, Ohio. American EIntomological Society: Transactions. American Geographical Society: Bulletin. New York. American Geologist. Minneapolis, Minn. American Institute of Mining Engineers: Bulletins, Transactions.

New York. American Journal. of Science. New Haven, Conn. American Mining Congress : Papers and Addresses. American Museum of Natural History: Memoirs, Bulletins, Journal.

New York. American Naturalist. New York.

American Philosophical Society: Proceedings. Philadelphia, Pa. Annales des Mines. Paris, France.

Appalachia. Boston, Mass.

Association American Geographers : Annals.

Banker and Investor, Magazine. Denver, Colo.

Boston Society of Natural History: Proceedings, Memoirs. Boston,

Mass. British Association for the Advancement of Science: Reports. LondoB

Canadian Mining Journal. Toronto and Montreal, Canada.

Canadian Naturalist. Montreal, Canada.

Canadian Record of Science. Montreal, Canada.

Carnegie Institution of Washington. Washington, D. C.

Carnegie Museum : Annals, Memoirs. Pittsburgh, Pa.

Cassier's Magazine. New York.

Centralblatt Mineralogie, Geologic, und Paleontologie. Stuttgart, Germany.

Cincinnati Society of Natural History: Journal. Cincinnati, Ohio. , Coal Age. New York.

Coal Mining Institute of America : Proceedings.

Colliery Engineer. Scranton, Pa.

Colorado Bureau of Mines Reports. Denver, Colo.

Colorado College Publications: Science series. Colorado Springs, Colo.

Colorado Inspector of Coal Mines Reports. Denver, Colo.

Colorado Geological Survey: Report, Bulletins. Boulder, Colo.

Colorado Museum of Applied Geology.

Colorado School of Mines: Annual Reports, Biennial Reports, Bulle- tins, Magazine, Quarterly. Golden, Colo.

12 Bibliography Of Colorado Geology

Colorado Scientific Society : Proceedings. Denver, Colo.

Colorado, University of: Studies. Boulder, Colo.

Cornwall, Royal Geological Society : Transactions. Cornwall, England.

Drury College, Bradley Geological Field Station : Bulletin.

Economic Geology. Lancaster, Pa.

L'Echo des Mines et de la Metallurgie.

Eilectro and Metallurgical Industry.

Engineering and Mining Journal. New York.

Elngineering Magazine. New York.

Engineering News. New York.

Engineering Record. New York.

Entomological News. (Entomological section of Academy of Natural

Science of Philadelphia.) Field Museum of Natural History: Geological series. Chicago, 111. Franklin Institute: Journal. Philadelphia, Pa. Geographical Journal. London. Geologists' Association: Proceedings. London. Geological Magazine. London. Geological Society of America: Bulletin. New York. Geological Society of Liverpool: Proceedings. Liverpool. Geological Society of London : Quarterly Journal. London. Harvard College, Museum of Comparative Zoology : Bulletin, Memoirs.

Cambridge, Mass. Institution of Mining Engineers: Transactions. Newcastle upon

Tyne, England. Institution of Mining and Metallurgy : Transactions. London. International Mining Congress: Proceedings. Iowa Academy of Sciences : Proceedings. Des Moines, Iowa. Journal of Geography. Lancaster, Pa. Journal of Geology. Chicago, 111.

Kansas Academy of Science: Proceedings. Topeka, Kans. Kansas City Review. Kansas City, o. Metallurgical and Chemical Engineering Magazine. Mexican Mining Journal. Middlesex Hospital Journal. Mineral Collector. New York. Mineralogical Magazine and Journal of the Mineralogical Society.

London. Minerals.

Mines and Minerals. Scranton, Pa. Mining and Industrial Reporter. Denver, Colo. Mining and Scientific Press. San Francisco, Cal. Mining Industry. New York. Mining Industry and Tradesman. Denver, Colo. Mining Industry and Review. Denver, Colo. Mining Investor. Denver, Colo. Mining Journal. London. Mining Magazine. London. Mining Reporter. Denver, Colo. Mining Review. Denver, Colo.

Bibliography Op Colorado Geology 13

Mining Science. Denver, Colo.

Mining World. Chicago. 111.

National Academy of Science : Memoirs. Washington, D. C.

National Geographic Magazine. Washington, D. C.

Nature. London.

Nautilus. Philadelphia, Pa.

Neues Jahrbuch fiir Mineralogie, Geologie, und Paleontologle.

Stuttgart. New York Academy of Science : Transactions. New York. New York Entomological Society : Journal. New York. New York Lyceum of Natural History : Annals. New York. New York State Museum of Natural History. Albany.

Nova Scotia Institute of Science: Proceedings and Transactions.

Halifax. Ores and Metals. Denver, Colo. Overland Monthly.

Pacific Coast Miner. San Francisco,' Cal. Petermann's Mitteilungen. Popular Science Monthly. New York. Princeton College, Contributions to the Museum of Geology and

Archaeology. Rochester Academy of Science : Proceedings. Rochester, N. Y. Royal Society of Edinburgh.

School of Mines Quarterly (Columbia). JIew York. Science. New York.

Science (edited by John Michels). New York. Scientific American Supplement. New York. Scottish Geographical Magazine. Edinburgh.

Smithsonian Institution: Annual Reports; Miscellaneous Collections. Stone. New York. Technology Quarterly. Boston. Torrey Botanical Club: Bulletin. Lancaster, Pa. Torreya. Lancaster, Pa.

Tschermaks Mineralogische und Petrographische Mitteilungen. U. S. Bureau of Mines: Reports, Bulletins, Technical Papers. Wash- ington. U. S. Census Reports. Washington. U. S. Dept. of Agriculture: Field Operations of the Bureau of Soils.

Washington. U. S. Director of the Mint Reports: Production of Gold and Silver.

Washington. U. S. Geographical Survey West of the One Hundredth Meridian

(Wheeler Survey). Washington. U. S. Geographical and Geological Survey of the Rocky Mountain

Region (Powell Survey). Washington. U. S. Geological Exploration of the Fortieth Parallel (King Survey).

Washington. U. S. Geological and Geographical Survey of the Territories (Hayden

Survey). Washington.

14 Bibliography Of Colorado Geology

U. S. Geological Survey: Annual Reports, Bulietins, Water-supply Papers, Professional Papers, Geologic Atlas of the United States, Mineral Resources of the United States. Washington.

U. S. Land Office Reports. Washington.

U. S. National Museum : Proceedings, Bulletins. Washington.

U. S. Reclamation Service Reports. Washington.

U. S. War Dept. Explorations and Surveys for a railroad route from the Mississippi River to the Pacific Ocean. Washington.

Washington Academy of Sciences: Journal. Washington.

Washington Biological Society : Proceedings. Washington.

Western American Scientist.

Western Chemist and Metallurgist Denver, Colo.

WestemSociety of Engineers: Journal. Chicago, 111.

Wisconsin Academy of Sciences : Proceedings. Madison, Wis.

Wisconsin Natural History Society: Bulletin. Milwaukee, Wis.

Tale Bi-centennial Publications, Contributions to Mineralogy and Petrology. New Haven, Conn.

Zeitschrift fiir praktische Geologic. Berlin, Germany.

Bibliography

Ackermann, Eug.

1. Le march du wolfram. (The wolfram market; condi- tions of competition between Colorado and the rest of the world.) L'Echo des Mines et de la Metallargie, p. 588, May 13, 1912.

Adams, George I.

1. Two new species of Dinictis from the White River beds.

(Tertiary) Am. Nat., vol. 29, pp. 573-578, Illust, 1895.

2. The extinct Felidae of North America. (Tertiafy) Am.

Jour. Sci., 4th ser., vol. 1, pp. 419-444, Illust, 1896.

3. Principles controlling the geologic deposition of the hydro-

carbons. A. I. M. E., Trans., vol. 33, pp. 340-347, 1903.

4. Physiography of the Arkansas Valley region. Abstract :

Science, new ser., vol. 11, p. 508, 1900.

Adams, W. E.

1. The Smuggler-Union mill and tramway. Colo. Sch. of Mines, Bull., vol. 1, pp. 66-68, 1900.

Agassi z, Alexander.

1. On Marcou's "Geology of North America." Am. Jour. Sci., 2nd ser., vol. 27, pp. 134-137, 1859. Review by J. D. Dana : pp. 137-140.

Aikens, Warren.

1. Electric power at Colorado mines, mills and smelters. Electric power at Cripple Creek mines. Mg. and Eng. World, vol. 37, pp. 475-478, 521-524, 609-612, Illust.,

Alderson, V. C.

1. The Cripple Creek drainage tunnel and its significance in

scientific mining. Mg. Rept., vol. 55, pp. 447-448, 1907. Paper read at the opening of the tunnel.

2. The Colorado State School of Mines. Mg. Rept., vol. 56,

pp. 538-539, 1907.

Allen, A. G.

1. Unprofitable engineering projects in western America. Eng. Mag., vol. 15, pp. 440450, Illust., 1898.

Discussion of irrigating canals as related to geological formations.

10 Bibliography Of Colorado Geology

Allen, E. T., and HiUebrand, W. F.

1. Comparisoir of a wet crucible fire method for the assay of gold tellurides with notes on the errors occurring in the operations of fire assaying and parting. See HiUebrand, W. F., and Allen, E. T.

Allen, J. A.

1. Metaniorphisui produc*ed by the burning of lignite beds in

Dakota and Montana Territories. Boston Soc. Nat. Hist., Proc, vol. 16, pp. 246-262, 1874. Abstract : Am. Jour. Kci., 3rd ser., vol. 8, pp. 141-142, 1874.

2. Description of a fossil passerine bird from the insect-

bearing shales of Colorado. (Florissant) Hayden Surv., Bull., vol. 4, no. 2, pp. 443-445, Illust., 1878; Am. Jour. Sci., 3rd ser., vol. 15, pp. 381-384, Illust.,

Allen, 0. B., and Comstock, W. J.

1. Bastnasite and tysonite from ('olorado. Yale Bicenten- nial publications, Coutr. to Mineral, and Petrog., pp. 126-121), 1901. (From Am. Jour. Sci., 3rd ser., vol. 19,

pp. 390-393, 1880.)

Descriptions and analyses of minerals from near Pikes Peak.

Ameling, F. M.

1. On the origin of the lieadville ore deposits. E. and M. J.,

vol. 28, pp. 454-455, 1879.

2. The geology of the Tjeadville ore district. E. and M. J.,

vol. 29, p. 255, Illust., 1880.

3. Ouray mines described. E. and M. J., vol. 30, pp. 22, 38,

72, 1880.

4. San Miguel mines. E. and M. J., vol. 30, pp. 185-186, 1880.

American Gteologist.

1. Supposed Trenton fossil fish. Am. Geol., vol. 7, pp. 329-

330, vol. S, pp. 178-180, 1891.

Editorial comment on discovery of fossils near Cailon City.

2. Movements in the Rockies. Am. Geol., vol. 28, pp. 332-333,

Quotation from September, 1901. number of Mines and Minerals, describing local slipping in mountains of Colo- rado.

Bibliography Of Colorado Geology 17

American Journal of Mining.

1. Colorado lodes, ores, and titles. Am. Jour. Mg., vol. 1, pp.

37S-394, 18G4.

2. The silver mines of Colorado. Am. Jour. Mg., vol. 2, p.

298, 1805.

3. Mining in Colorado. Am. Jour. Mg., vol. 2, p. 74, 1865.

4. Colorado coal and irou. Am. Jour. Mg., vol. 3, p. 108,

American Journal of Science.

1. Brief notices of some recently described minerals. Am.

Jour. Sci., 3rd ser., vol. 22, pp. 490-491, 1881.

Contains abstract from Mining Index, describing ilesite from Hall Valley, and abstract from Amer. Phil. Soc, Phil., 1881, p. 472, describing alaskaite from Poughkeep- sie gulch.

2. Mass of meteoric iron in Colorado Territory. Am. Jour.

Sci., 3rd ser., vol. 32, pp. 286-287, 1886.

American Naturalist.

1. The fossils of CN)lorad(), Am. Nat., vol. 7, pp. 752-775, 1873.

An editorial notice of some recent discoveries.

Anderson, H. M.

1. The mineral resources of Park Couty. Pacific Coast Miner, vol. 7, pp. 226-227. 1908.

Andrews, C. I.

1. The volcanic rock of Alum Hill, Boulder Count v. Colo.

8ci. Soc, Proc., vol. Y, pp. 148-155, 1898.

Describes the megascopic, microscopic, and chemical characters of two varieties of eruptive rock.

Argall, George 0.

1. Recent developments on Iron Hill, Iadville. E. and M.

J., vol. 89, pj>. 2(il-2(;f;, Illust., 1910.

Discussion of the character and origin of the ore deposits.

2. Oxidized zinc oi*es at I/adville. M and M. J., vol. 92,

pp. 899-400, 1911.

Argall, Philip.

1. Gold-bearinj quartz. Colo. Sci. Soc., Proc, vol. 4, pp.

331-336, 1893.

In discussion of paper by T. A. Rickard on dissimilar occurrences of gold-bearing quartz.

18 Bibliography Of Colorado Gbology

Argall, PhUip — Continued.

2. Origin of ore deposits. Colo. Sci. Soc, Proc., vol. 4, pp.

353-354, 1893.

In discussion of paper by P. H. van Diest on the evi- dence bearing on the formation of ore deposits by lateral secretion.

3. Nickel. The occurrence, geological distribution and gen-

esis of its ore deposits. Colo. Sci. Soc, Proc., vol. 4, pp. 395-421, 1893.

Describes the occurrence and composition of nickel ores from Leadville and Salida.

4. Pyrite smelting process. Eng. Mag., vol. 7, pp. 78-84,

5. Extraction of gold from low and medium grade ores.

Colo. State Sch. of Mines, Biennial rept., 1896, pp. 39-46, 1896.

6. Geology of Cripple Creek district. Colo. Sci. Soc, Proc,

vol. 5, pp. 43-45, 1898.

In discussion of paper by Whitman Cross on the same subject.

7. Cyaniding telluride ores. Min. Ind., vol. 6, pp. 368-379,

8. Sampling and dry crushing in Colorado. Mg. Bept., vol.

45, p. 270, cont., 1902. (Abstract from paper read before Inst. Mining and Metallurgy, London.)

9. Chlorination vs. cyanidation. E. and M. J., vol. 78, pp.

821 and 1021, 1904.

Discussion of W. B. Greenawalt's paper on chlorination in Colorado. Description of treatment of Cripple Creek ores.

10. Cost of chlorinating Cripple Creek ores. The Economies

of Mining. Compiled by T. A. Rickard, published by Engineering and Mining Journal, New York. 10a. Steps in cyanidation. Colo. Sci. Soc, Proc, vol. 8, pp. 323-347, 1907.

11. Rock oxidation at Cripple Creek. Mg. and Sci. Press, vol.

96, pp. 883-886, Illust., 1908.

12. Ore deposits of Magdalena, New Mexico. E. and M. J.,

vol. 86, pp. 366-370, Illust, 1908.

Compared with Leadville ore deposits.

13. Reducing mining costs and increasing profits. E. and M.

J., vol. 90, pp. 1251-1252, 1910; Mg. Sci., vol. 62, pp. 567-568, 1910.

Bibliography Of Colorado Geology 19

Argall, PhUip — Continued.

14. Metallurgical processes in Colorado. Mg. and Sci. Press

vol. 100, pp. 35-40, 362, 1910. Discussion : p. 228.

15. Cyanidation of Cripple Creek ores. Mg. and Sci. Press,

vol. 101, pp. 804-805, 1910.

16. Milling methods at Stratton's Independence. Mines and

Minerals, vol. 32, pp. 319-320, Illust., 1911.

17. Colorado metallurgical progress. Mg. and Sci. Press, vol.

104, pp. 78-81, 1912.

Discussion of milling methods used in Cripple Creek, Leadville, Idaho Springs, and brief mention of smelters.

18. Milling Sulpho-Tellurides at Cripple Creek. Mexican

Mg. Jour., p. 27, Nov. 1912.

19. History of cyaniding Cripple Creek low grade tellurides.

Mg. and Eng. World, vol. 36, p. 915, 1912; Banker and Investor Mag., p. 368, Oct. 1911.

Armington, Howard C, and Stotesbury, Harold W.

1. The Tak mining, milling, and tunneling company. Lead- ville. Colo. Sch. of Mines, Bull., vol. 4, no. 1, pp. 71- 88, Illust., 1907.

Includes an account of the local geology.

Armitage, H. E.

1. Concentration of low grade ores. A. I. M. E., Trans., vol. 18, pp. 257-266, 1889.

Describes milling practice at Leadville and Aspen.

Arthur, E. P., Jr.

1. Cripple Creek in 1909. E. and M. J., vol. 89, p. 162, 1910.

Ashbumer, C. A.

1. The coal trade and miners' wages in the United States

for the year 1888. A. I. M. E., Trans., vol. 18, pp.

122-139, 1889.

Summary of production of coal in Colorado 1887-1888, and note on the anthracite deposits.

Ashley, Oeo. H., and Fisher, Cassius A.

1. The valuation of public coal lands. Depth and minimum

thickness of beds as limiting factors in valuation.

U. S. Geol. Surv., Bull. 424, 75 pp., 1910.

Coal seams of Garfield, Gunnison, El Paso counties, and Trinidad district described.

20 lUBLIOORAPHY OF COLORADO GEOLOGY

Atwood, Wallace W.

1. Phvsiograpbir studies in the San Juau district of Colo-

rado. Jour. GeoU vol. 19, pp. 449-453, 1911. Ab- sti'acts: Wash. Acad. Sci., Jour., vol. 1, pp. 45-4G, 1911; Geol. Soc. Am., Bull., vol. 22, p. 735, 1911.

2. A fi;eograpliic study of the Mesa Verde. Assoc. Am.

Geographers, Annals, vol. 1, pp. 95-100, Tllust., 1911.

Atwood, Wallace W., and Mather, Kirtley F.

1. The evidence of three distinct glacial epochs in the Pleistocene historv of the San Juan Mountains. Jour. Geol., vol. 20, PI). 385-409, 1912.

Austin, L. S.

1. Recent smelting practice in Colorado. K. and M. J., vol. (55, pp. 282-2'83, 1898.

Austin, W. L.

1. Telluride veins in the La Plata Mountains. Colo. Sci.

Soc, Bull., no. 10, pp. 4-5, 1898.

Describes occurrence and character of the veins.

2. Some tellurium veins in La Plata Mountains. Colo Sci.

Soc, Proc, vol. 0, lip. 87-90, 1902.

Describes the occurrence and 'character of the veins, and the character of the country rock.

3. (In discussicm of i)aper by Waldemnr Lindgren, *'The

geological features of the gold production of North

America.'-) A. I. M. K., Trans., vol. 33, pp. 1079

1081, 1903.

Calls attention to the occurrence of a gold deposit of supposed Cambrian age in Colorado.

Ayres, E. F.

1. Mineralogical notes. Am. Jour. Sci., 3rd ser., vo). 37,

pp. 23r>23G, must., 1889.

Contains crystallographic description of pyrite from Colorado.

Babb, C. C, Hinderlider, j\l. C;., and Hoyt, J. C. .

1. Keport of progi-ess of stream measurements for the vcar

1905. V. S. (leol. Surv., W. S. Paper 172, 283 pp.,

Missouri river drainage: includes North and South Platte and Clear Creek.

Babbit, E. C.

1. The Marion zinc mine of ('uster County. Mg. Sci., vol. 64, pp. 548-549, Illust., 1911.

Bibliography Of Colorado Geology 21

Bagg, Rufus M., Jr.

1. The veins of Boulder roiinty. E. and M. J., vol. 75, pp.

154 and 334, 1903; Jour. Oeol., vol. 11, p. 100, 1903. Discusses the occurrence and origin of the ore deposits.

2. Some copper deposits in the Sangre de Cristo Range.

Eo. Geol., vol. 3. pi. 739-749, Illust., 1908.

Bailar, J. C.

1. Cupel ahsorption with telluride ores. W. Chem. and

Met., vol. 1, pp. 119-120, 1905.

2. Sampling the products of concentrating and sliming

tables. W. (Miem. and Met., vol. 1, pp. 135-138, 1905. Discussion: pp. 138-144.

Gilpin County sampling described.

3. The non-metalli<* minerals of Colorado. Colo. Sch. of

Mines, Biennial Reit., pj). 1098; W. Chem. and Met,

vol. 4, PI). 330-330, 1908; Colo. Sch. of Mines, Biennial

Kept., pp. 35-40, 1910.

Discussion of deposits of clay, fire clay, pottery clay, building stone, marble, onyx, cement, soda, salt, mica, coke, gas, coal, and mineral springs.

Bailar, J. C, and Woodward, E. C.

1. Cupel losses in assaying telluride ores. Mg. Mag., vol. 12. p. 235, 1900.

Bailey, E. H. S.

1. "Feather alum" from Cohu'ado. (Abstract.) Kans. Acad.

Sci., Trans., vol. 12, p. 101, 1890.

A brief note on halotrichite from Pitltin County.

2. On halotrichite or feather alum, from Pitkin County,

Colorado. Am. Jour. Sci.. 3rd ser., vol. 41, pp. 296- 297, 1891 .

Bailey, E. W., Rath, C. M., and Grider, R. L.

1. The garnetiferous bed in (lolden Gate Canyon, Jefferson County. Colo. Sch. of Mines, Bull., vol. 2, pp. 80-86, Illust., 1905.

Bain, H. F.

1. The consolidated Franklin mines. K. and M. J., vol. 72,

p. 721, 11 lust., 1901.

Description of Franklin mines on Seaton Mountain near Idaho Springs, with notes on mining methods.

/

22 Bibliography Op Colorado Geology

Bain, H. P. — Continued.

2. Milling practice at Idaho Springs. E. and M. J., vol. 72,

pp. 425-426, 1901.

Discussion of character of Idaho Springs ores and analyses.

3. Machine drill contest at Idaho Springs. E. and M. J.,

vol. 74, p. 114, must., 1902.

4. Mining costs at Cripple Creek. The Economies of Min-

ing, compiled by T. A. Bickard, published by Engi- neering and Mining Journal, pp. 154-156, 1905.

5. Zinc mining in the west. Ores and Metals, vol. 15, no.

20, pp. 16-20, 1906.

6. Tunnel driving in Colorado. Mg. and Sci. Press, vol. 99,

pp. 743-747, lUust., 1909.

7. Matte smelting at Denver. Mg. and Sci. Press, vol. 100,

pp. 250-253, 1910.

Baker, F. L.

1. Cyaniding Cripple Creek ores. Mines and Mining, vol.

p. 422, cont., 1908.

Discussion of cost of treatment in mills, rates of freight, analyses of ores, description of Isabella and Wild Horse mills; also Blue Flag, Standard plant at Colorado City and Portland mills.

Baldacci, L.

1. 11 giacimento solfifero della Louisiana. (The sulphur

deposits of Louisiana.) Italia, Ministero di Agricol-

tura, Industria e Commercio, Publicazioni del Corpo

reale delle Miniere, Roma, Tipografia Nazionale di

G. Bertero, 43 pp. Illust., 1906.

Reference to Colorado sulphur deposits.

Baldwin.

1. Mining claims near Leadville. California mining dis< trict. Lake County. Map. F. L. Sizer, draughtsman. 26 X 37 inches, Cleveland, J. W. Morgan, 1879. Ball, John.

1. Geology and meteorology west of the Rocky Mountains. Am. Jour. Sci., 1st ser., vol. 25, pp. 351-353, 1834.

Ball, Sydney H.

1. Pre-Cambrian rocks of the Georgetown quadrangle. Am.

Jour. Sci., 4th ser., vol. 21, pp. 371-389, 1906.

Describes the topography and general geology, and the occurrence, character, and relations of the pre-Cambrian formations.

Bibliography Of Colorado Geology 23

Ball, Sydney H., , J. E., and Oarrey, G. H.

1. Geology of the Georgetown quadrangle. See Spurr, J. E., Garrey, G. H., and Ball, Sydney, H.

Bancroft, George J.

1. Secondary enrichment at Cripple Creek. The bottom

levels at Cripple Creek. E. and M. J., vol. 74, pp 752-753, 1902; vol. 75, p. Ill, 1903; vol. 76, pp. 86-88

2. Coal and iron interests in Colorado. Ores and Metals

vol. 15, p. 20, 1906.

3. Portland cement in the Rocky Mountain region. Mg

Rept., vol. 56, pp. 615-617, Illust., 1907.

4. The formation and enrichment of ore-bearing veins. A. I

M. E., Trans., vol. 38, pp. 245-268, 1908.

5. Colorado Fuel and Iron Company's plant at Minnequa

Colorado. Mg. Sci., vol. 57-59, pp. 567, cont., 1908.

6. Genesis of ore deposits. Colo. Sci. Soc, Proc, vol. 10, pp

1-16, 1911.

Short reference to the ore deposits of Leadville; Farn comb Hill; Summit County; Gilpin County; Clear Creek County; Ouray; Hall Valley and Geneva Gulch, Brecken- ridge; Bear Creek, Jefferson County.

7. The superficial appearance and alteration of ore deposits.

Colo. Sci. Soc, Proc, vol. 10, pp. 39-54, 1912.

Brief reference to the ore deposits of San Juan, Clear Creek, Ouray and Aspen.

8. Genesis of ore deposits. The Superficial appearance and

alteration of ore deposits. Colo. Sci. Soc, Proc, vol. 10, pp. 1-16, 39-54, 1911.

Bancroft, Howland, and Irving, J. D.

1. Geology and ore deposits near Lake City. See Irving, J. D., and Bancroft, Howland.

Bannister, H. M.

1. Note on the age of the Laramie group or Rocky Mountain

Lignitic formation. Am. Jour. Sci., 3d ser., vol. 17,

pp. 243-245, 1879.

Attacks King's theory that the Laramie is exclusively Cretaceous and offers evidence for transition character.

Barber, E. A.

1. The ancient pottery of Colorado, Utah, Arizona, and New

Mexico. Am. Nat., vol. 10, pp. 449-464, 1876.

Describes the pottery and methods of manufacture.

24 Bibliography Of Colorado Geology

Barber/ E. A. — Continued.

2. Ancient art in northwestern Colorado. Harden Surv.,

Hull., vol. 2, no. 1, pp. mm, 187G.

3. Rock inscriptions of the Ancient Pueblos'' of Colorado,

Utah, New Mexico, and Arizona. Am. Nat, vol. 10,

pi. 71()-72r), 1870.

Includes description of writing found in southwestern Colorado.

4. Stone implements and ornaments from the ruins of Colo-

rado, Utah, and Arizona. Am. Nat., vol. 11, pp. 264- 275, Illust., 1877.

5. The Ancient Pueblos, on the ruins of the Valley of the

. Bio Siin Juan. Am. Nat., vol. 12, pp. 526-53G, 60G-

G14, 1878.

Extracts from a paper written by the author and read before the Congres des Americanistes, at Luxembourg, in September, 1877, with additions.

Barber, P.

1. Zinc-lead pimeul plant of United States Smelter Corn- pan v. Canon (ity. Mg. Kept., vol. 56, p. 217, 1907.

Barker, F. L.

1. Structural ideology at Leadville. Mines and Mining, vol. 28, pp. 220-222, Illust., 11K)7.

Barker, Pierce.

1. Emi)ire Zinc Company's plant at Canon City. Mg. Rept., vol. 56, pj). 2rS.26!>, Illust., 1907.

Barnes, C. S.

1. Platoro. Mg. and Sci. Press, vol. 99, p. 224, 1909; vol. 103, p. 109, 1911.

Barnes, II. B.

1. Storage battery haulage at Idaho Springs. Mg. Sci., vol. 66, PI). 166-102, Illust., 1912.

Baron, II. J.

1. The gold Prin<e mines, San Juan County. Mg. Rept.,

vol. 54, pp. 204-206, Illust., 1906.

2. Mills and milling irartice in the Silvertou camp, San

Jmin. Mg. Re]t., vol. 54, iip. .SS6-.389, Illust., 1906.

Baskerville, W.

1. Uranium. K. and M. J., vol. <S7, pp. 257-258, 1909.

Describes minerals and gives localities.

Bibliography Op Colorado Geology 25

Bassler, R. S., and Nickles, J. M.

1. A synopsis of American fossil Hryozoa, including bibliog- raphy and synonymy. See Nickles, J. M., and Bassler, R. S.

Edson S.

1. Graphite. U. S. Geol. ., Min. Res. 1910, pt. 2, p. 907,

1912; U. S. Geol. ., Min. Res. 1911, pt. 2, pp. 1079, 1112, 1912.

2. Geology of the pitchblende oi-es of Colorado. U. S. Geol.

Surv., Prof. Paper 90A, 5 pp., Ilhist., 1914.

Bastin, Edson 8., and Hill, J. M.

1. The Evergreen copper mine, Colorado. (Gilpin County) Ec. Geol., vol. (J, PI). 467-472, Ilhist., 1911.

Bather, F. A.

1. A visit to the Florissant exhibition in the British Museum. Geol. Assoc, Proc, vol. 21, pt. 3, pp. 159-165, 1909.

Baur, G.

1. Notes on some little known American fossil tortoises.

Phila. Acad. Nat. i., Proc, pt. 3, pp. 411-430, 1893. Reviews previous descriptions and classifications of some Cretaceous species of Wyoming ai\d Colorado.

Bayley, W. S.

1. The rock formations of the Silver Cliff and Rosita Hills

district. Am. Nat., vol. 31, pp. 1051-1053, 1897.

Review of paper in tlie 17tli Ann. Rept. U. S. Geol. Surv.

Bechler, Gustavus R.

1. Report of Gustavus R. Bechler, topographer. Ilayden

Surv., 9th Ann. Rept., pp. 309-440, Illust., maps, 1877. Geograpliical report on the Middle and South Parks, Colorado, and adjacent country.

2. Report of Gustavus R. Bechler, topographer of the Yampa

River division, 1870. Havden Surv., 10th Ann. Rept., pp. 359-378, Illust., map, 1878.

Becke, F.

1. Uranpecherz von Kirk Mine, Bald M(mntain, Gilpin

County. Tschermaks Mineral, und Petrogi'. Mitt.,

N. F., Bd. 28, p. 188, 1909.

A note on uranium ore and associated minerals from Bald Mountain.

26 Bibliography Of Colorado Geology

Becker, G. F., and Emmons, S. F.

1. Placer mines and mining ditches.

2. Deep mines. See Emmons, S. F., and Becker, G. F.

Beckwith, E. G.

1. Report by Lieut. E. G. Beckwith, Third Artillery, upon

the route near the thirty-eighth and thirty-ninth

parallels explored by Capt. J. W. Gunnison, Corps

Topographical Engineers. Pacific R. R. Report, vol.

2, pp. 1-128, II lust, 1855.

The report contains numerous quotations from the journal of Capt. Gunnison, who, with several others of the party, was killed by the Indians on the Sevier River, Utah, Oct. 26, 1853. It includes descriptions of the region explored as to scenery, geology, physiography, vegetation, and inhabitants.

Belden, A. W., Delamater, G. R., and Groves, J. W.

1. Washing and coking tests of coal at the fuel-testing plant,

Denver, July 1, 1907, to June 30, 1908. U. S. Geol.

Surv., Bull. 368, 54 pp., Illust., 1909.

Thirty-seven coals tested from Rocky Mountain region; all but three produced coke.

Bell, J. R.

1. Cyaniding in the Telluride district. Mines and Minerals,

vol. 22, pp. 385-387, Illust., 1902.

A description of the plant and process used in the Liberty Bell mill.

Belt Thomas.

1. Notes of the discovery of a human skull in the drift near Denver. Am. Assoc. Adv. Rci., vol. 27, pp. 298-299,

Benicke, Alb.

1. Uranium and vanadium from Colorado. Carnotite. Mg.

and Eng. World, vol. 35, pp. 917-918, 1911.

Translated and abstracted from Centralblatt der Htttten- und Walzwerke, Frankfurt.

Berg, G.

1. Ueber krystalline Schiefer aus dem Las Animas Canyon

siidlich von Silverton. Tschermaks Mineral, und

Petrogr. Mitt., N. F., Bd. 27, pp. 276-284, Illust, 1908. Describes crystalline slates in Las Animas Canyon south of Silverton.

Bibliography Of Colorado Geology 27

Bergland, Eric.

1. Executive and descriptive report of Lieut. Bergland,

Corps of Engineers, on the operations of party no. 1,

Colorado section, field season of 1877. Wheeler Surv.,

Ann. Kept., Appendix NN, pp. 103-106, 1878.

Contains notes on the geography, topography, weather, etc., of central and south central Colorado.

Berkey, C. P.

1. Stratigraphy of the Uinta Mountains. Geol. Soc. Am.,

Bull., vol. 16, pp. 517-530, Illust., 1905.

Discusses the occurrence, character, and relations of the formations of the Uinta Mountains of Utah, and the correlation of the Wasatch and Uinta sections.

Berktau, Ph.

1. Ueber Plauocephalus aselloides Scudd., und Limnochares antiquus V. Heyd. Sitzungsb. niederrh. Gesellsch. Natur- u. Heilk., 1885, pp. 298-300, 1885.

Berthand, E. L.

1. Tusk of an elephant or mastodon found in Colorado.

Am. Jour. Sci., 3rd ser., vol. 3, p. 302, 1872.

Notice of discovery nefir Golden. See also page 373.

2. Section of the Lignitic strata at Golden City. Hayden

Surv., 7th Ann. Kept., p. 109, 1874.

This occupies half a page in Marvine's report of the Middle Park division.

Berthoud, E. L.

1. Ancient remains in Colorado. Smith. Inst., Ann. Rept.

1867, pp. 403-404, 1868.

Brief description of ruins one half mile west of Golden.

2. Antiquities on the Cache la Poudre River, Weld County.

Smith. Inst, Ann. Rept. 1871, pp. 402-403, 1873.

Briefly describes site of supposed manufactory of agate arrow heads and other instruments and weapons.

3. On rifts of ice in the rocks near the summit of Mount

McClellan, and on the different limits of vegetation on adjoining summits. Am. Jour. Sci., 3rd ser*, vol. 11, pp. 108-111, 1876.

4. On the occurrence of uranium, silver, iron, etc., in the

Tertiary formation of Colorado Territory. Phil.

Acad. Sci., Proc., 1875, vol. 27, pp. 363-365, 1875. Discussed by K5nig and Gabb, pp. 365-366, 1875.

2S Bibliography Of Colorado Geology

Berthoud, E. L. — Continued.

5. Artesian wells in Colorado. Kansas City Review, vol. 4, pp. 536-540, 1881.

Bessels, Emil.

1. Tlie luiinan remains found among the ancient ruins of southwestern Colorado and northern New Mexico. Hayden Surv., Bull., vol. 2, no. 1, pp. 47-63, Tllust.,

Includes long bones and description of skulls.

Birkinbine, John.

1. Production of iron oi-es in the United States. U. S.

Geol. Surv., 16th Ann. Kept., pt. 3, p. 199, 1895.

2. Engineering in the Pikes Peak region. Cassier's Mag.,

vol. 30, pp. 483-501, lUust., 1005.

Blake, John Charles.

1. A mica andesite of west Sugarloaf Mountain, Boulder

County, Colo. Sci. Boc, Proc, vol. 7, pp. 1-17, 1901. Describes occurrence, megascopic and microscopic char- acters and composition.

Blake, W. P.

1. Ancient lake in the Colorado desert. Am. Jour. Sci., 2nd ser., vol. 17, pp. 435-43S, 1854.

la. Description of the fossils collected by Capt. John Pope. Rei)t. Expl. and Sur. Pacific K. R., Mississippi River to Pacific Ocean, vol. 2; Rept. on the geology of the 32nd Parallel, pp. 39, 40, Wash. 1855.

lb. Review of a portion of the geological map of the United States and British Provinces by Jules Marcou. Am. Jour. Sci., 2nd ser., vol. 22, pp. 383-388, 1856.

Ic. On the orogi'aphy of the western portion of the United States. Am. Assoc. Adv. Sci., Proc, vol. 10, pp. 119- 134, pt. 2, 1857.

Id. Report upim the precious metals: being statistical notices of the principal gold and silver pi*oducing regions of the world repivsented at the Paris Universal Ex- position. Paris Univei'sal Exposition, 1867, Reports

of the U. S. ('ommissionei's, Washington, 1860. Colorado reference pp. 150-153.

le. The gold of Cripi)le Ci-eek. E. and M. J., vol. 57, p. 30,

Suggests that sylvanite is probably for the most part calaverite or krennerite.

Bibliography Of Colorado Geology 29

Blake, W. P.— Continued.

2. Superficial blackening and discoloration of rocks, eye-

cially in desert regions. A. I. M. E., trans., vol. 35, pp. 371-375, 1005; Mg. Kept., vol. 50, pp. 362-3G3, 1904.

3. Lead mining, 1908. Min. Ind., vol. 17, pp. 564-565, 1908.

Review of mining industry at Leadville and Creede for 1908.

Blake, W. P., and Hitchcock, Charles II.

1. Geological map of the United States. See Hitchcock, Charles H., and Blake, W. P.

Blanc, Victor.

1. A few properties of uranium : its pivparation, gravimet- ric determination, and occurrence. W. Chem. and

Met., vol. 1, pp. 252-256, 1905.

Minerals carnotite, pitchblende or uraninite described, and occurrence of carnotite noted in Montrose, San Miguel, San Juan, Routt, and Rio Blanco counties.

Blanchard, C. J.

1. The United States iedamation service. Am. Geog. Soc, Bull., vol. 37, pp. 1-14; vol. 38, pp. 212-213, 1905.

Bliss, Richard.

1. Glaciers in the Rocky Mountains. Am. Nat., vol. 6, pp.

310-312,1872.

Discusses the evidence of former glaciers in the Rocky Mountains.

Blow, A. A.

1. The oi-e chutes and recent developments of Iron Hill,

Ijeadville. Colo. Scli. of Mines, Ann. Rept., 1887, pp.

61-65, must., 18'87; A. I. M. E., Trans., vol. 18, pp.

145-181, Illust., 1890. (Entitled 'The geology and

ore deposits of Iron Hill, Tjeadville, Colorado.")

Discusses topography, structural features, contact met- amorphism, ore chutes, ore deposits, and origin of ore deposits.

2. The TiCadville gold belt. Abstract: E. and M. J., vol. 59,

p. 77, map, 1895.

Gives brief description of the topography and geology of the region and of the character and occurrence of the gold ores.

Boehmer, Max.

la. Topogiaphic maj), Tjeadville, Carbonate I'egion, showing location of mines and prominent prospects from

30 Bibliography Of Colorado Geology

Boehmer, Max — Continued.

actual surveys made in October, 1879. 21 x 33 inches.

Chicago, J. W. Weston, 1879. lb. Map of Lake County, compiled from Government reports

and authentic surveys made in October, 1879 and

September, 1880. 21 x 24 inches. New York, Am.

Photo. Lith. Co., 1880. Ic. Map of mining claims in Frying Pan, Colorado, Henrietta

Park, and Lake Fork gulches. Independence mining

district, Lake County. 29 x 36 inches, Leadville, 1881.

1. The Leadville gold belt. Ores and Metals, vol. 6, no. 258,

pp. 3-4, Illust., 1897.

2. The localization of values in ore bodies and the occurrence

of shoots in metalliferous deposits: secondary en- richment and impoverishment. Ec. GeoL, vol. 3, pp. 337-340, Illust., 1908.

3. The genesis of the Leadville ore deposits. A. I. M. E.,

Bull., no. 38, pp. 119-122, 1910; Mg. World, vol. 32, p. 836, 1910. Discussion by W. Morton Webb, A. I. M. E. Bull. no. 50, pp. 195-196, 1911.

Bolster, R. H., and Freeman, W. B.

1. Surface water supply of the United States. See Freeman, W. B., and Bolster, R. H.

Bonsall, J. H.

1. Map of Colorado showing all the latest government sur- veys. Compiled from official sources. 35 x 37 inches. Denver, 1873.

Bonsall, J. H., and Kellogg, E. H.

1. Map of Colorado with plans of its principal towns. 35

X 37 inches. Denver, 1872.

2. Colorado from the latest authorities. 13? x 17 inches.

Denver, 1873.

Bosqui, F. L.

1. The cyanide works of the Liberty Bell Gold Mining Com-

pany. E. and M. J., vol. 70, pp. 337-338, 1900.

2. A proposed filter-press slimes plant. A. I. M. E., Trans.,

vol. 34, pp. 715-726, 1903.

Boutwell, J. M.

1. Vanadium and uranium in southeastern Utah. U. S. Geol. Surv., Bull. 260, p. 203, 1904.

Bibliography Of Colorado Geology 31

Boyd, C. B.

1. A catalogue and bibliography of North American Mesozoic Invertebrata. U. S. Geol. Surv., Bull. 102, 315 pp.,

Boyd, David.

1. Irrigation near Greeley. U. S. Geol. Surv., W. S. Paper 9, 90 pp., Illust., 1897.

Bradfordi A. H., and Curtis, Roy P.

1. Dredging at Breckenridge. Mg. and Sci. Press, vol. 99,

pp. 361-366, Illust, 1909.

Includes notes on local geology and occurrence of placer gold.

Bradley, Frank H.

1. Geological chart of the United States east of the Rocky Mountains and of Canada, 16 by 24 inches, folder, New York, 1875.

Brady, P. W.

1. Vanadium, its properties and metallurgy. Mines and Minerals, vol. 32, pp. 106-107, 1911.

BranneTi J. C.

1. Bibliography of clays and the ceramic arts. TJ. S. Geol. Surv., Bull.' 143, 114 pp., 1896.

Breckenridge, L. P.

1. A study of 400 steaming tests made by the fuel-testing plant, St. Louis, Missouri, in 1904, 1905, and 1906. U. S. Geol. Surv., Bull. 325, 196 pp., 1907.

Breed, Robert S.

1. "The Sunset trachyte", from near Sunset, Boulder County. Colo. Sci. Soc, Proc, vol. 7, pp. 2fl6-230,

Describes the occurrence, the megascopic, and micro- scopic characters, and the composition.

Breen, L. A.

1. Gold and silver production during 1911. Mg. Sci., vol. 65, pp. 63-66, Illust., 1912.

Brewer, William H.

1. Warren's New Physical Geography. 144 pages. Phila- delphia, 1890.

32 Bibliography Of Colorado Geology

Brinsmade, R. B.

1. A nirious deposit of ceiussite in Colorado. K. and M. J., vol. 88. pp. 844-845, Illiist;, 1907.

Britten, Elizabeth G., and HoUick, Arthur.

1. American fossil mosses, with description of a new spe- cies from Florissant. Tor. Bot. Club, Bull., vol. 34, l>p. 130-142, Tllust., 1907; New York Bot. Garden, Oontr. no. 93, 1907. Abstract : Scien(*e, new ser., vol. 25, p. 292, 1907.

Broadhead, G. C.

1. North Park, Colorado. Kansas City Review, vol. 6, pp.

197-204, 1883.

2. Jura-Trias. (Western United States) Kansas City Re-

view, vol. 0, PI). 534-540, 1883.

Brooks, Eli.

1. Section of artesian well near Denver City. Hayden Surv., 7th Ann. Rept., p. 109, 1874.

Bross, William.

1. Canyons, their character and origin. Science (edited by John Michels), vol. 2, pp. 468-470, 1881. (Read be- fore the American Association for the Advancement of Science, 1881.)

Brown, Barnum.

1. The Hell Creek beds of the upper Cretaceous of Montana. Am. Mus. Nat. Hist., Bull., vol. 23, pp. 823-845, 1907.

Brown, Mrs. H. C.

1. The Pan-American exposition at Buffalo. The Colorado exhibit. E. and M. J., vol. 72, i)p. 265-206, 1901.

Brown, M. R.

1. Brown's Continental Atlas. Philadelphia, M. R. Brown, 1889. No. 166, map of Colorado.

Brown, Thos. A.

1. The placer mines of Summit County and geological struc- ture thereof. Mg. Sci., vol. 65, p. 171, IJlust., 1912.

Brownlee, A. G.

1. Taxation of mining property in Colorado camps. Mg.

Sci., vol. 62, pp. 348-349, 1910.

2. Importance of the Malm process in the metallurgy of

complex ores. Am. Mg. Cong., Proc, vol. 14, pp. . 168-179, 1911.

Bibliography Of Colorado Geology 38

Brues, Charles T.

1. Fossil parasitic and phytophagous Hyiuenoptera from

Florissant. Am. Mus. Nat. Hist., Bull., vol. 22, pp. 291-298, Illust., 1906.

2. A new fossil grass from the Miocene of Florissant. Wis.

Nat. Hist. Soc, Bull., vol. 6, pp. 170-171, Illust, 1908. Describes Melica primaeva s. sp.

H. Two fossil Phoridae from the Miocene shales of Floris- sant. Am. Mus. Nat. Hist., Bull., vol. 24, pp. 278-275, Illust, 1908.

4. New phytophagous llymeuoptera from the Tertiary of

Florissant. Harvard Coll., Mus. ComjK Zool.. Bull., vol. 51, no. 10, i)p. 259-276, Illust., 1908.

5. The parasitic Hymenoptera of the Tertiary of Florissant.

Harvard Coll. Mus. Comp. Zool., Bull. 54, pp. 1-125,

One hundred and twenty-five species, of which one hundred and twelve are described as new.

6. Some notes on the geological history of the parasitic

Hymenoptera. N. Y. Entomological Soc, Jour., vol. 18, no. 1, pp. 1-22, Illust., 1910.

Bnmton, D. W.

1. A new system of ore samj)ling. A. I. M. K., Trans., vol.

13, pp. 639-645, 1885.

2. Aspen Mountain, its ores and their mode of occurrence.

E. and M. J., vol. 46, pp. 22-23, 42-45, 1888.

3. An exi)eriment in cooperative mining. (Aspen district)

E. and M. J., vol. 60, pp. 104-106, 1895.

4. Notes on driving the Laramie tunnel in Colorado. Mg.

and Eng. World, vol. 36, pp. 959-961, Illust, 1912. Abstract of paper read before the American Institute of Mining Engineers.

Buckton, G. B.

1. Monograph of the British Aphides, vol. 4, pp. 14M7S, Indon, 1875-1883.

Discusses antiquity of Hemiptera, including Florissant species.

Bulkley, Fred G.

1. The separation of strata in folding. A. I. M. E., Trans.,

vol. 13, pp. 384-388, 1885.

Structural conditions near Leadville discussed.

(i)

84 Bibliography Of Colorado Qboloot

Burchard, Ernest F.

1. Fluorspar and cryolite. U. S. Qeol. Surv., Min. Res.

1008, pt. 2, pp. 607-620, 1909.

Description of deposits of Jamestown, Boulder County. Evergreen, Jefferson County, and Rosita, Custer County.

2. Iron ore, pig iron and steel. U. S. Geol. Surv., Min. Res.

1909, pt. 1, pp. 71-99, 1909. 8. Manganese ore. U. S. Geol. Surv., Min. Res. 1909, pt. 1, pp. 107-119, 1909.

4. Papers on barytes and strontium, cement, fluorspar, cry-

olite, glass sand, other sand and gravel, gypsum, lime, mineral paints, and stone. U. S. Geol. Surv., Min. Res. 1909, pt. 2, 1910.

5. Gypsum and plasters. GjT)sum deposits in Eagle County.

U. S. Geol. Surv., Bull. 470, pp. 354-305, map, 1911. G. Papers on cement, glass sand, other sand and gravel, lime, stone, fluorspar, cryolite, gj'psum, iron ore, manganese ore. U. S. Geol. Surv., Min. Res. 1910, pts. 1 and 2,

7. Iron ore, pig iron and steel. Manganese and manganifer-

ous ores. U. S. Geol. Surv., Min. Res. 1911, pt. 1, pp. 119-174, 191-208, 1912.

8. Papers on cement, glass sand, other sand and gravel, lime,

stone, fluorspar, cryolite, gypsum. U. S. Geol. Surv., Min. Res. 1911, pt. 2, 1912.

Burchard, H. G.

1. Colorado. Production of gold and silver in the United

States, 1880. Report of the Director of the Mint on the production of gold and silver in the United States,

2. Colorado. Report of the Director of the Mint on the pro-

duction of gold and silver in the United States, 1881.

3. Colorado. Report of the Director of the Mint on the pro-

duction of gold and silver in the United States, 1882, pp. 390-593.

4. Colorado. Report of the Director of the Mint on the pro-

duction of gold and silver in the United States, 1883, pp. 235434.

Burger, C. C.

1. Ore treatment in Boulder County. K. and M. J. vol. 65, pp. 129-130, must, 1898.

BIBLIOGBAPHT Or COLOBADO GBOLOOT 85

Bnrgessy 0. W.

1. Leasing in Cripple Creek district. Mines and Minerals, vol. 30, pp. 6-11, 1909.

Burroughs, W. G.

1. The petroleum fields of the United States. E. and M. J.,

vol. 89, pp. 921-924, 1910.

Brief reference to Colorado field.

Burrows, J. S.

1. Mine sampling and chemical analysis of coal tested at the United States fuel-testing plant, Norfolk, Vir- ginia, 1907. U. S. Geol. Surv., Bull. 3G2, 23 pp., 1908.

Burton, B. S.

1. Contributions to mineralogy. Am. Jour. Sci., 2nd ser.,

vol. 45, pp. 34-38, 18G8.

Contains description of the physical and chemical character of enargite from Colorado.

Burton, H. E.

1. Leadville zinc deposits. Mines and Minerals, vol. 31, p. 436, 1911.

Butler, B. S.

1. Copper. U. S. Geol. Surv., Min. Kes. 1908, pt. 1, pp.

185-226, 1909.

Production 1889-1908, from San Juan. Gilpin, Chaffee, Clear Creek, Ouray, Hinsdale, San Miguel, Montrose counties and the plateau district of southwestern Colo- rado.

2. Copper. U. S. Geol. Surv., Min. Res. 1909, pt. 1, pp.

151-180, 1910; U. S. Geol. Surv., Min. Res. 1910, pt. 1, p. 196, 1912; U. S. Geol. Surv., Min. Res. 1911, pt. 1, pp. 255-313, 1912.

Butler, B. S., and Gale, H. S.

1. Alunite: A newly discovered deposit near Marysvale, Utah. U. S. Geol. Surv., Bull. 511, pp. 64, 1912. Colorado deposits, pp. 38-43.

Butler, 0. Montague.

1. Geology of the Grayback mining district, Costilla County.

See Patton, H. B., 8.

2. Some recent developments at Leadville. A Leadville fis

sure vein. Ec. Geol., vol. 7, pp. 315-323, 1912. Ab stract: Mg. and Eng. World, vol. 37, pp. 101-102,

36 Bibliography Of Colorado Qxoloot

Butler, G. Montague — Continued.

3. The gold of Newlin's Gulch near Denver. Mg. Sci., vol.

65, pp. 486-487, lUust., 1912.

4. Geology and ore deposits of the Alma district, Park

County. See Patton, H. B., 10.

Butler, H. C.

1. Leadville. Mg. Kept., vol, 4;"), pp. 70-73, 1901.

2. Ijoadvflle's great past and promising future. Pacific Coast

Miner, vol. 7, pp. 205-207, lUust, 1903.

History and description of the district and its ore deposits and mines.

Butler, \V. H. C.

1. The tragedy of the Homestake mine, Colorado. Mg. Kept., vol. 44, p. 212, eont., Illust., 1901.

, Butters, Roy M.

1. The analvsis of a small meteorite found near Lafavette.

Colorado. W. Chem. and Met., vol. 4, pp. 181-183,

2. Permian or Permo-Carboniferous of the eastern foothills

of the Rocky Mountains in Colorado. Colo. Geol. Surv., Rull. 5, pt. 2, pp. 58-101, 1918.

Caldron, J. D.

1. Archuleta (Nninty oil fields. Ores and Metals, vol. 13, nos. 9 and 10, map, Tllust., 1901.

Oallbreath, James P\, Jr.

1. The mineral resources of Clear Creek County. Mg. Rept.,

vol. 40, p. 120, cont, Illust., 1899.

Gives a history of mining in Clear Creek County and a description of the mines.

2. The mineral resources of Gilpin County. Mg. Rept., vol.

40, p. 238, 1899.

W. The mineral resources t>f Summit <'ounty. Mg. Kept., vol. 40, J). 342. Illust., 1899.

4. Mineral i*esources of Colorado. .Mg. Rept., vol. 41, p. 18, cont., 1900.

Description of Lake County and Ieadvllle mines.

T). Mineral resources of Leadville and Lake County. Mg. Rept, vol. 41, p. 31, cont., Illust., 1900.

Bibliography Of Colorado Geology 37

Campbell, M. B.

1. The classification of coals. A. I. M. E., Bull., no. 5,

pp. 1033-1049, 1905; A. I. M. E., Trans., vol. 36, pp. 324-340, 1906.

2. Character and use of the Yampa coals. U. S. Oeol. Surv.,

Bull. 297, pp. 82-91, 1906.

3. The formation of coal. Hypothesis* to account for the

transformation of vegetable matter into the different grades of coal. Ec. Geol., vol. 1, pp. 26-33, 1906; Mines and Minerals, vol. 26, pp. 565-566, 1906.

4. Historical review of theories advanced by American geol-

ogists to account for the origin and accumulation of

oil. Ec. Geol., vol. 6, pp. 363-395, 1911. Colorado reference, pp. 389-391.

5. Contributions to economic geology. (Miscellaneous an-

alyses of coal samples from various fields of the United States.) U. S. Geol. Surv., Bull. 471, pp.

629-655, 1912.

Colorado reference pp. 633-640. Gives analyses of coal frotn Adams, El Paso, Garfield, Jackson, La Plata, Mof- fat, Montezuma, Ouray, Pitkin, Rio Blanco and Routt counties.

Cannon, Geo. L., Jr.

1. Antiquities of Jefferson and Clear Creek counties. Smith.

Inst., Ann. Kept. 1877, pp. 236-238, 1878.

A description of a number of relics including fire- places, "Indian circles," axes, hammers, arrow-heads, etc.

2. The Quarternary of the Denver Basin. Colo. Sci. Soe..

Proc, vol. 3, pp. 48-70, 1889.

3. On the Tertiary Dinosauria found in the Denver beds.

Colo. Sci. Soc, Proc, vol. 3, pp. 140-147, 1889.

4. Notes on the aboriginal remains. Colo. Sci. Soc, Proc,

vol. 3, pp. 200-204, 1889.

5. Notes on the formations in eastern Colorado. Colo. Sci.

Soc, Proc, vol. 3, pp. 215-216, 1890.

6. Identification of a dinosaur from the Denver group.

Colo. Sci. Soc, Proc, vol. 3, pp. 253-254, 1890.

. 7. Notes on the geology of Perry Park. Colo. Sci. Soc,

Proc, vol. 3, pp. 308-315, 1891.

8. Notes on a discovery of Radiol ites Austinensis, Roemer

( ?). Colo. Sci. Soc, Proc, vol. 4, pp. 75-76, 1892.

Brief note on the occurrence of this fossil in the Niobrara Cretaceous.

18 Biblioobafhy Of Colorado Geology

Cannon, Geo. L., Jr. -Continued.

9. Notes on the geology of Palmer Lake, and the Paleozoic

exposures along the Front Range. Colo.. Sci. Soc,

Proc, vol. 4, pp. 224-234, map, 1893.

Describes the topography of the region, the granites, the occurrences of Paleozoic rocks, and the Jura-Trias, Cretaceous, Tertiary, and Quaternary series which occur in this vicinity.

10. The geo\ogy of Denver and vicinity. Colo. Sci. Soc.,

Proc, vol. 4, pp. 235-270, 1893.

Discusses the causes of the absence of Paleozoic meas- ures and describes the Trlassic, Jurassic, Cretaceous. Tertiary, and Quaternary beds of the Denver Basin. Mentions some of the fossils found at different horizons.

10a. Fossil woods of the Platte River valley. Colo. Sci. Soc, Proc, vol. 7, 1903.

11. Notes on some fossils recently discovered near Denver.

Colo. Sci. Soc, Proc, vol. 8, pp. 194-198, Illust., 1906. Gives notes on the occurrence and character of fossil vertebrate remains found in the vicinity of Denver.

12. SauFopodan gastrolitha. Science, new ser., vol. 24, p.

116, 1906.

Notes on the discovery of these pebbles with the remains of Atlantosaurus immanis Marsh, at Morrison.

Capps, Stephen R., Jr.

1. Pleistocene geology of the Leadville quadrangle. U. S.

Geol. Surv., Bull. 386, 99 pp., map, Illust., 1909.

Abstract: Science, new ser., vol. 29, p. 946, 1909. Discusses glaclatlon in Leadville quadrangle.

Capps, Stephen R., Jr., and LeflSingwell, E. D. K.

1. Pleistocene geology of the Sawatch Range, near Leadville.

Jour. Geol., vol. 12, pp. 698-706, Illust., 1904.

Discusses the extent, in this region, of the ice during the Glacial epoch, and describes the drift deposits, ter- races, and drainage changes.

Carl, P. H.

1. Tungsten and vanadium in Colorado and elsewhere. Mg.

Sci., vol. 63, pp. 92-94, Illust., 1911.

2. The status of mining in Colorado districts. Mg. Sci.,

vol. 65, pp. 99-100, 1912.

3. Vanadium as a staple Colorado product. Mg. Sci., vol.

65, pp. 400-410, 1912.

Bibliography Of Colorado Oboloqy

Oarlyle, W. A.

1. Notes on a great silver camp. Canadian Record of Sci- ence, vol. 5, pp. 403-412, 1892.

Describes the geology of the mining districts of Lead- yllle and Aspen, and the occurrence and character of the ore bodies.

Carpenter, F. R.

1. Pyrite smelting. Colo. Sch. of Mines, Bull., vol. 1, pp.

34-44, 1903.

Charge, cost of plant, refining and disposition of matte, and discussion of other processes.

Carpenter, W. L.

1. Executive and descriptive report of Lieut. W. L. Carpen- ter, Ninth Infantry, on the operations of party no. 3, Colorado section, field season of 1875. Wheeler Surv.,

Ann. Rept., Appendix JJ, pp. 126-130, 1876.

Contains a few notes on the regions surrounding Fort - Garland and Rosita.

Carstarphen, F. C.

1. Modification of former Cretaceous classifications on the western slope of the Continental divide. Colo. Sch. of Mines Mag., vol. 1, pp. 8-10, 1911.

Chamberlin, T. C.

1. The freshwater Tertiary formations of the Rocky Moun- tain region, by W. M. Davis. Jour. GeoL, vol. 8, pp. 379-382, 1900. (A review of article in vol. 45, no. 17, Am. Acad. Arts and Sci., Proc.)

Chandler, A. E., Hinderlider, M. C, and Swendsen, O. S.

1. Report of progress of stream measurement 1904. See Hinderlider, M. C, Swendsen, G. S., and Chandler, A. E.

Chapin, Frederick H.

1. Mountaineering in Colorado. 3rd ed. Boston, W. B. Clark and Company, 1893.

Describes Hallett and other ice fields.

Chapman, J. A. J.

1. Altman's map of the Cottonwood, Chalk Creek, Monarch- Gunnison mining district. 26 x 39 inches. New York and Newton, Mining Record Lith. Co.. 1880.

x'

40 Bibliography Of Colorado Gbologt

Oharlton, Thomas.

1. Notes on the occurrence of charcoal at a depth of 630

feet in the Silver Cliff mining district, Custer County. E. and M. J., vol. 49, p. 332, 1890.

2. Occurrence of nickel. Colo. Sci. Soc, Proc, vol. 4, pp.

420-421, 1893.

In discussion of paper by Philip Argall on "Nickel, the occurrence, geological distribution, and genesis of its ores/' describes the occurrence of nickel in the Gem Mine, Fremont County. Colorado.

3. First contributions toward a list of the minerals of Wet

Mountain Valley. West. Am. Scientist, vol. 7, no. 51, pp. 18-19, July, 1890. ( Read before Colorado Biolog- ical Association.)

Lists thirty-six minerals.

Chase, Charles A.

1. Notes on the Liberty Bell mine. A. 1. M. E., Trans., vol. 41, pp. 1-48, 1911; A. I. M. K., Bull. GO. pp. 981-1028.

Chatard, Thomas M.

1. Yellow sandstone from the Armejo (juarrv, Colorado. U. S. Geol. Sun-., Bull. 7, p. 141, 1887.

Ohatard, T. M., and Bakins, L. G.

1. Rocks from Colorado. Kee Eakins L. G. and Chatard. T. M.

Ohauvenety Regis.

1. Building? stones of Colorado. 1884.

Report containing analyses and physical tests made at Colorado School of Mines.

2. Chemisti'j of the Denver artesian wells. Colo. Sci. Soc,

Proc, vol. 1, pp. 98-101, 1884. Gives analyses of water.

8. Notes on ii*on prospects in northern Colorado. Colo.

Sch. of Mines, Biennial Rept. 188G, pp. 15-21, 1886. Analyses of iron ore from Boulder County, from near Morrison, El Paso County, Park County. Hairs Valley, and Como.

4. Iron resources of Gunnison County. Colo. SHi. of Mines,

Rept. 1887, pp. 9-26, 1887.

5. Preliniinarv notes on the iron i*esources of Colorado.

Colo. Sch. Mines, Rept. of field work and analyses, 1886, pp. 5-16, 1888.

Bibliography Of Colorado Qboloot 41

Ohauvenet, Regis — Continued.

6. Gunnison's iron deposits. Mining Industry, vol. 2, pp.

14-16, 1888.

7. Analyses of natural, thermal and mineral waters of Colo-

rado. Colo. Sch. of Mines, Biennial Rept. 1890, pp.

21-29, 1890.

Contains analyses of fifteen samples from: Steamboat Springs, Poncha Springs, Boulder Ck)unty near Crisman, Idaho Springs, Douglas County near Deansbury, Valley View Hot Springs in Saguache County, and Dillon Man- ganese Spring at Dillon, Summit County.

8. The iron resources of Colorado. A. I. M. E., Trans., vol.

18, pp. 266-273. 1890.

9. TiCadville reviewed, by a non-partisan. Pacific Coast

Miner, vol. 7, p. 208, Tllust., 1903.

10. The valuation of coal lands. Colo. Sch. of Mines, Bull.,

vol. 3, pp. 3-10, 1905.

Discusses age of coal beds in the state, mining meth- ods, deformation and its effect on deposits and impuri- ties.

11. Examination and valuation of coal properties, with

especial reference to conditions found in Colorado and the west. Mg. Rept., vol. 53, pp. 146-148, 1906. Abstract from Mines and Minerals.

m

12. The cyanide process at the Portland Mill. Mg. Rept.,

vol. 56, pp. 37S 879. ront, 1907.

Chester, Albert H.

1. Acanthite from Colorado. Columbia Sch. of Mines

Quart., vol. 15, pp. 103-104, 1894.

Describes crystals of silver sulphide which are con- sidered to belong to this species.

2. On krennerite from Cripple Creek. Am. Jour. Sci., 4th

ser., vol. 5, pp. 375-377, Illust, 1898.

Describes its chemical and crystallographic characters.

Chisholm, Frederic F.

1. Data concerning the Denver wells. Colo. Sci. Soc, Proc,

vol. 1, pp. 83-98, 1884.

2. Coal production of Montana, Wyoming, Colorado, and

New Mexico, 1885. E. and M. J. vol. 41, p. 192, 1886.

Production by counties.

3. The Elk Head anthracite coal field of Routt County.

Colo. Sci. Soc, Proc. vol. 2, pp. 147-149, 1886.

42 BIBLIOOrUPHY OF COLOEUDO GBOLOOT

Ohisbolm, Frederic F. — Continued.

4. Gold and silver in. Colorado. 11th Census of the U. S..

Rept. on mineral industries, pp. 111-115, 1892.

Contains brief notes on geology, character of the ores, and ore treatment. The same volume contains statistics of production.

Ohittenden, Qeo. B.

1. Report of George B. Chittenden, Topographer of the San

Juan division. Hayden Surv., 9th Ann. Rept, pp.

351-368, Illust., 1877.

Describes topography, streams, vegetation, gives table of altitudes, and a discussion of the three-point problem.

2. Report of George B. Chittenden, Topographer of the

White River division. Hayden Surv., 10th Ann. Rept., pp. 349-357, 1878. Topographical report on the White River district. X3rand Hogback, Roan or Book Plateau.

List of elevations in the White River district.

Christy, S. B.

1. The growth of American mining schools and their rela- tion to the mining industry. A. I. M. E., Trans., vol.

23, pp. 444-4G5, 1893.

Gives list of graduates from Colorado State School of Mines. 1882-1892.

Church, A. H.

1. Note on Colorado hydrophane. Min. Mag. and Jonr. Min. Soc, vol. 8, p. 181, 1889.

Clancy, John Collins.

1. Development of the Clancy electrochemical system. Mg

Sci., vol. 63, pp. 4-6, 1911.

Abstract of a paper presented before the American Electrochemical Society in New York, Dec. 16, I'JIO. Gives a progressive description of the experiments on Cripple Creek tellurides.

Clapp, P. G., Johnson, B. L., and Puller, M. L.

1. Bibliography and index of undergronnd-wator literature published in 1905. Sec Fuller. M. L., Johnson, B. L., and Clapp, F. 0.

Clark, John M.

1. The evolution of the genera of the Paleozoic Brachiopoda. N. Y. State Oeol., 13th Ann. Bopt., pp. 609-646, 1895.

Bibliography Of Colorado Geology 43

Olark, R. Neilson.

1. The Tertiary coal beds of Caiiyoii City. A. I. M. K.,

Trans., vol. 1, pp. 293-296, Illuat., 1873. Abstract: E. and M. J., vol. 14, pp. 305-306, 1873.

2. The Humboldt-Pocahontas vein, Rosita. A. I. M. E.,

Trans., vol. 7, pp. 21-33, 1879.

.Clark, W. B.

la. Revision of Cretaceous Echinoidea of North America.

Johns Hopkins Univ., Circulars, X, no. 87, pp. 75-77,

lb. Silurian fish remains. Science, new r., vol. 17, p. 107,

1. Correlation papers. Eocene. U. S. Geol. Surv., Bull. 83,

173 pp., Illust., 1892. Interior region east and west flanks of Rockv Mountains with historical sketch and description of Laramie group, Arapahoe, Denver beds. Middle Park beds, Puerco beds, Green River shales, Amyzon beds, Bridger group, Huerfano beds, with summary of correlation.

2. The Mesozoic Echinodermata of the United States. U. S.

Geol. Surv., Bull. 97, 207 pp., Illust., 1893.

Clarke, P. W.

1. An analysis of sylvanite from Colorado. Am. Jour. Sci.,

3rd ser., vol. 14, p. 286.

Gives analysis of material from Grand View mine, Boulder County.

2. Iron-mica from near Pikes Peak. Am. Jour. Sci., 3rd

ser., vol. 34, pp. 136-137, 1887.

Describes a specimen and gives analysis from margin and analysis from near the center.

3. Studies in the mica group. Am. Jour. Sci., 3rd ser., vol.

34, pp. 131-137, 1887.

Contains description and analysis of iron-mica from near Pikes Peak.

4. Note on the constitution of ptilolite and mordenite. Am.

Jour. Sci., 3rd ser., vol. 44, pp. 101-102, 1892.

5. Analyses of rocks from the laboratories of the United

' States Geological Survey, 1880-1899. U. S. Geol. Surv., Bull. 168, 308 pp., 1900. Reprint of Bull. 148, (see Clarke and Hillebrand), with additional analyses

44 Bibliography Of Colorado Gboloqy

Clarke, F. W.— Continued.

from the San Juan district, and some additions under miscellaneous rocks.

6. Mineral analyses from the laboratories of the United

States Geological Survey, 1880-1903. U. S. Geol. Surv., Bull. 220, 119 pp., 1903.

7. Analyses of rocks from the laboratory of the United

States Geological Survey, 1880-1903. U. S. Geol. Surv., Bull. 228, 375 pp., 1904. Reprint from Bulls. 148 and 168 with a few additional rocks from mis- cellaneous localities.

8. Analyses of rocks and minerals from the laboratory of

the United States Geological Survey, 1880 to 1908. U. S. Geol. Surv., Bull. 419, 322 pp., 1910. Reprint of Bulls. 148, 168, 228, with additional analyses from La Plata Mountains, Silverton quadrangle, Ouray quadrangle, and Telluride quardangle.

9. The data of geochemistry. (Second edition.) U; S. Geol.

Surv., Bull. 491, 782 pp., 1911. Reprint of Bull. 330, with additions.

Clarke, P. W., and Hillebrand, W. F.

1. Analyses of rocks, with a chapter on analytical methods, laboratory of the United States Geological Survey, 1880-1896. U. S. Geol. Surv., Bull. 148, 306 pp., 1897. See also: Clarke, F. W., Bull. 168, 228, and 419.

Clarke, F. W., and Steiger, Geo.

1. The action of ammonium chloride upon analcite and leu-

cite. Am. Jour. Sci., 4th ser., vol. 9, pp. 117-124, 1900.

Contains analysis of analcite from Golden.

2. The action of amuionium chloride upon certain silicates.

Am. Jour. Sci., 4th ser., vol. 13, pp. 27-38, 1902.

Contains analysis of, and tests with tliomsonite from Golden, and riebeckite from St. Peters Dome.

Clarke, John M.

1. The fossil fishes of Canyon City. Am. Geol., vol. 15, p.

121, 1895.

2. The evolution of tlie genera of the Paleozoic Brachiopoda.

N. Y. State Geol., 13th Ann. Kept, pp. 609-646, 1895.

Clason Map Company, Denver.

This company has published many maps of the whole state, of counties, districts, etc.

BIBLIOOaAPHT OP COLORADO QBOLOOT 45

Olayton, J. E.

1. The coal field of La Plata County. E. and M. J., vol. 25, p. 441, 1878.

Clerc, F. L.

1. The utilization of the zinc carbonates and silicates of Leadville. Colo. 8ci. Soc, Proc, vol. 10, pp. 85-98, 1911. Abstract: Mg. Sci., vol. ()5, pp. 187-189, Illust.,

OlifFord, P. H., and Nye, F.

1. The Smuggler-Union fire. See Nye, F., and Clifford, P. H.

Oockerell, Theodore Dru Alison.

1. Fossil plants from Florissant. Torrey Bot. Club, Bull.,

vol. 33, no. 5, [p. 307-312, II lust., 1900.

2. A fossil Cicada from Florissant. Am. Mus. Nat. Hist.,

Bull., vol. 22, pp. 457-458, Illust., 190fi.

3. The fossil Mollusca of Florissant. Am. Mus. Nat. Hist.,

Bull., vol. 22, pp. 459-402, Illust., 1900.

4. Fossil saw-fiies from Florissant. Am. Mus. Nat. Hist.,

Bull., vol. 22, pp. 499-501, Illust., 1900.

5. Fossil Hymenoptera from Florissant. Harvard Coll. Mus.

Comp. Zool., Bull., vol. 50, no. 2, pp. 33-58, 1900.

0. The fossil fauna and flora of the Florissant shales. Univ.

Colo. Studies, vol. 3, no. 3, ])i). 157-175, Illust., 1900. Gives an account of the character and occurren(!e of the fauna, discusses the evidence of the fossils as to the age of the deposits, and gives a classified, annotated Summary of the fauna and flora. The plate contains figures of new species of plants described in the Bulletin of the Torrey Botanical Club. 1906.

7. A new fossil ant. Entomolop:irnl News, vol. 17. no. 1. pp.

27-28, 1900.

Descril)e8 Ponera hendersoni, n. sp., from Tertiary beds near Florissant.

7a. A fossil water-bu*?. Canadian Entomologist, vol. 38, p.

209, 1900.

Gives a description of Corixa florissantella, n. sp. 7b. A new Tertiary Planorbis. (Planorbis florissantensis)

Nautilus, vol. 19, pp. 100-101, 1900.

8. A redwood described as a moss. Torreya, vol. 7, no. 10,

pp. 203-204, 1907.

Considers Hypnum haydenii from Florissant to be the growing: tips of Sequoia.

46 Bibliography Of Colqrado Qbologt

Oockerell, Theodore Dru Alison — Continued.

9. A new plant (Pious) from the Fox Hills Cretaceous. Univ. Colo. Studies, vol. 4, no. 3, pp. 149-152, 1907.

10. A fossil tsetse-fly in Colorado. Nature, vol. 76, p. 414,

11. A Miocene wasp. Nature, vol. 77, p. 80, 1907.

12. A new zonitoid shell from the Miocene, Florissant.

Nautilus, vol. 21, no. 8, p. 89, 1907. Describes Vitrea fagalis, n. sp.

13. Some old-world types of insects in the Miocene of Colo-

rado. Science, new ser., vol. 26, pp. 446-447, 1907.

14. A fossil caterpillar (from the Miocene shales of Floris-

sant). Canadian Entomologist, vol. 39, no. 6, pp. 187-188, 1907.

15. A fossil butterfly of the genus Chlorippe. Canadian

Entomologist, vol. 39, no. 11, pp. 361-363, Illust, 1907. Describes Chlorippe wilmattae n. sp. from the Miocene shales of Florissant.

16. A fossil Tortricid moth. Canadian Entomologist, vol. 39,

no. 12, p. 416, 1907.

Describes Tortrlx florissantana n. sp. from the Miocene shales of Florissant.

17. An enumeration of the localities in the Florissant basin;

from which fossils were obtained in 1906. Am. Mus. Nat. Hist., Bull., vol. 23, pp. 127-132, Illust., 1907.

18. Fossil dragon flies from Florissant. Am. Mus. Nat. Hist,

Bull., vol. 23, pp. 133-139, Illust, 1907.

19. Some fossil arthropods from Florissant. Am. Mus. Nat

Hist., Bull., vol. 23, pp. 605-616, Illust, 1907.

19a. Some Coleoptera and Arachnida from Florissant Am. Mus. Nat Hist, Bull. 23, pp. 617-621, 1907.

20a. Descriptions and records of bees. Annals and Mag. Nat.

Hist., ser. 8, vol. 1, pp. 337-344, 1908.

Includes a description of Protomelecta brevipennis n. sp. from the Miocene shales of Florissant.

20b. The dipterous family Nemestrinidae. Am. Entomological

Soc, Trans., vol. 34, pp. 247-253, Illust., 1908.

Describes insects from the Miocene shales of Floris- sant

20c. Another fossil nemestrinid fly. Am. Entomological Soc, Trans., vol. 34, p. 254, 1908.

Bibliography Ok Colorado Gbologt 47

Oockerell, Theodore Dru Alison — Continued.

20d. A fossil fly of the family Blepharoceridae. Entomologist,

vol. 41, pp. 262-265, lUust., 1908.

Describes Philorites johannsenl n. gen. and n. sp. from Eocene near Rifle.

20. A fossil Orthopterous insect with the media and cubitus

fusing. Entomological News, vol. 19, no. 3, pp. 126

128, 1908.

Describes Palaeorehnia maculata n. gen. and n. sp. from the Miocene shales of Florissant..*

21. A dragon-fly puzzle and its solution. Entomological

News, vol. 19, pp. 455459, 1908.

Discusses the identification of a dragon fly found in the Miocene shales of Florissant

22. The fossil sawfly Perga coloradensis. Science, new ser.,

vol. 27, pp. 113-114, 1908.

iProposes the new genus Phenacoperga for the insect from the Miocene shales of Florissant, previously referred to Perga.

23. A new locality for Miocene mammals. Science, new ser.,

vol. 28, p. 683, 1908.

Describes the finding of remains of Parahippus in Middle Park.

24. Fossil insects from Florissant. Am. Mus. Nat. Hist,

Bull., vol. 24, pp. 59-69, Illust, 1908.

25. The fossil flora of Florissant. Am. Mus. Nat. Hist., Bull.,

vol. 24, pp. 71-110, Illust., 1908.

26. A fossil leaf-cutting bee. Canadian Entomologist, vol.

40, no. 1, pp. 31-32, 1908.

Describes Megachile praedicta n. sp. from the Miocene shales of Florissant.

27. Fossil Chrysopidae. Canadian Entomologist, vol. 40, no.

3, pp. 90-91, 1908.

Gives notes on the fossil insects from Florissant, Colo- rado. Supplements Scudder's description of Palaeochrysa vetuscula.

28. Two fossil Diptera. Canadian Entomologist, vol. 40, no.

6, pp. 173-175, Illust., 1908.

Describes Microstylum wheeleri n. sp., and Dialysis revelata n. sp. from the Miocene shales of Florissant.

29. Fossil Osmylidae (Neuroptera) in America. Canadian

Entomologist, vol. 40, no. 10, pp. 341-342, 1908.

Gives notes upon fossil insects from Florissant. Pro- poses the new enus Osmylidia for Osmyhis requletus Scudder,

48 Bibliogeapiiy Of Colouado Geology

Cockerell, Theodore Dru Alison — Continued.

80. The first American fossil Mantis. Canadian Ehtomiolo

gist,. vol. 40, no. 10, pp. 343-344, Illust., 1908.

Describes Llthophotina floccosa n. gen. and n. sp. from the Miocene of Florissant.

31. I)escrij)tion of Tertiary Insects. Am. Jour. Sci., 4th ser..

vol. 25, pp. 51-52, Illust., pp. 227-232 Illust.; pp. 309- 312, Illust. ; vol. 20, pp. 69-75, Illust., 1908.

32. I )escrii)tions of Tertiary plants. Am. Jour. Sci., 4th scr.,

vol. 20, PI). 65-08, Illust.; pp. 537-544, Illust., 1908.

The species described were collected from the Miocenr shales of Florissant. New names are proposed for sev eral previously described Miocene forms.

33. Florissant; a Miocene I'ompeii. Pop. Sci. Monthly, vol.

73, no. 2, pp. 112-126, Illust., 1908.

34. Some results of the Florissant expedition of 1908. Am.

Nat., vol. 42, pp. 569-581, Illust., 1908.

Gives notes upon various fossils obtained from Miocene shales near Florissant.

35. The Miocene si)ecies of Lymnaen. Nautilus, vol. 22, no.

7, pp. 69-70, 1908.

Describes Lymnaea florissantica n. sp.. from the Mio cene of Florissant,

36. F(ssil Cercopidae (Homojitera). Wis. Nat. Hist. Soc.

Bull., vol. 6, nos. 1-2, pp. 3.>38, Illust, 1908.

Discusses the character of homopterous inserts from the Miocene shales of Florissant.

37. Fossil Aphididae from Florissant. Nature, vol. 78, pp.

318-319, 1908.

38. Descriptions of TcM'tiary insects, Some new Diptera.

Am. Jour. Sci., 4th ser., vol. 27, p]). 53-58, Illust.,

Describes new Diptera from the Miocene of Florissant and the Eocene near Rifle.

39. Descriptions of Tertiary insects. VI. Am. Jour. Sci.,

4th ser., vol. 27, pp. 381-387, Illust., 1909.

40. Descriptions of Tertiary insects. VII. Am. Jour. Sci.,

4th ser., vol. 28, pp. 283-286, Ilhist., 1909.

41. Fossil Diptera from Florissant. Am. Mus. Nat. Hist.,

Bull., vol. 25, pp. 9-12, Illust., 1909.

42. Fossil insects from Florissant. Am. Mus. Nat. Hist.,

Bull., vol. 26, pp. 67-76, Illust., 1909.

Bibliogbafhy Of Colorado Geology 49

Cockerell, Theodore Dru Alison — Continued.

43. A catalogue of the generic names-based on American in sects and arachnids from the Tertiary i-ocks, with indications of the type 8i>ecies. Am. Mus. Nat. Hist., Bull., vol. 26, pp. 77-86, 1909.

44. Fossil Euphorbiaccae, with a note on Saururaceae. Tor-

reya, vol. 9, pp. 117-119, 1909.

Describes Acalypha myriclna n. sp, and Croton (?) furcatulum n. sp. from the Miocene shales of Florissant.

45. Amber in the Laramie Cretaceous. Torreya, vol. 9, no.

7, pp. 140-142, Illust., 1909.

Notes on the fossil plants of the Cretaceous of Mar- shall, and Phragmites laramianus n. sp. described.

46. Two new fossil plants from Florissant. Torreya, vol. 9,

no. 9, pp. 184-185, 1909.

Describes Hypolepis coloradensis n. sp., and Bauhinia pseudocotyledon n. sp. trom the Miocene shales of Flor- issant.

47. Fossil insects from Colorado. Hiitomologist, vol. 42, pp.

170-174, Illust., 1909.

Describes insects from the Eocene shales near Rifle and the Miocene shales near Florissant.

48a. Two fossil Chrysopidae. Canadian Entomologist, vol. 41,

no. 7, pp. 218-219, Illust., 1909.

Describes the fossil insects: Palaeochrysus concinnula n. sp., and P. ferruginea n. sp., from Miocene shales of Florissant.

48. Two fossil bees. Pntomological News, vol. 20, pp. 159

161, 1909.

Describes Pelandrena n. gen.. P. reducta n. sp., and Halictus mloceniciiR n. sp., from the Miocene shales of Florissant.

49. New North American bees. Canadian Entomologist, vol.

41, no. 11, pp. 393-395, 1909.

Includes description of Melitta willardi n. sp. from the Miocene shales of Florissant.

50. A fossil ground sloth in Colorado. Univ. Colo. Studies,

vol. VI, no. 4, pp. 309-312, Illust., 1909.

51. New fossil insects from Florissant. Annals, Entomo

logical Soc. Am., vol. 2, pp. 251-256, Illust, 1909.

52. A Tertiary leaf-cutting bee. Nature, vol. 82, p. 429, Tllust..

58. Another fossil tsetse rty. Nature, vol. 80, p. 128, 1909.

Describes Glossina osbornl n. sp. from Florissant.

50 Bibliography Of Colorado Qboloot

Cockerell, Theodore Dru Alison — Continued.

54. Descriptions of Tertiary plants, III. A fcilorbus from

Florissant considered to be a hybrid. Am. Jour. Set.,

4th ser., vol. 29, pp. 76-78, Illust., 1910.

Describes Sorbus diversifolia (Lx) and Sorbus nupta Q. sp. from the Miocene shales of Florissant

55. The fossil Crabronidae. Entomolopst, vol. 43, pp. 60-61,

Describes Crabro longaevus n. sp. from the Miocene of Florissant

56. Magnolia at Florissant. Torreya, vol. 10, no. 3, pp. 64-65,

Illust., 1910.

Magnolia florissanticola.

57. Fossil plants from the Mesa Verde Cretaceous. Univ.

Colo. Studies, vol. 7, no. 2, pp. 149-151, Illust, 1910. Notes on Cretaceous fossil plants from northwestern Colorado, and figures Gelnltzla reichenbach! and Saba- lites gray an us.

58. Notes on the Genus Sambucus. Torreya, vol. 10, no. 3,

pp. 125-128, Illust, 1910.

Sambucus amabilis from the Miocene shales of Flor- issant.

59. A fossil fig. Torreya, vol. 10, no. 10, p]>. 222-224, Illust.,

Ficus bruesi u. sp. from Florissant described, and new names proposed for some fossil species of Ficus found in Colorado.

60. Fossil insects and a crustacean from Florissant. Am.

Mus. Nat. Hist.. Bull., vol. 28. ])p. 275-288. .,

61. The Miocene ti-ees of the Rocky Mountains. Am. Nat.,

vol. 44, pp. 31-47, Illust., 1910.

62. Fossil flowers and fniit. Torreya. vol. 11, pp. 234-236.

1911; vol. 12, pp. 32-33, 1912.

Describes Robinia mesozoica n. sp. from the supposed Laramie of North Park, and Leucaena coloradensis from Florissant.

63. Fossil insects from Florissant. Am. Miis. Nat. Hist.,

Bull., vol. 30, pp. 71-82, Illust., 1911.

64. Descriptions and records of bees. Annals and Mag. Nat.

Hist., ser. 8, vol. 7, pp. 225-237, 1911.

Includes a description of Lithanthidium pertriste n. gen. and Bp. from the Miocene shales of Florissant.

BIBLIOGRAPHY OF COLORADO QBOIiOOT 51

Oockerelly Theodore Dru Alison — Continued.

65. Scudder's work on fossil insects. Psyche, vol. 18, no. H,

pp. 181-186, 1911.

66. The oldest American homopterous insect. Canadian En

tomologist; vol 44, pp. 93-95, 1912.

Describes Petropteron mirandum n. sp. and n. geu from the Pierre formation.

Oockerelli Theodore Dru Alison, and Bobbins, W. W.

1. An introduction to the study of Rocky Mountain bees. Univ. Colo. Studies, vol. 7, pp. 179-195, 1910. Includes list of bees from Florissant.

Oolbnm, £. A.

1. A peculiar ore deposit. Mg. and Sci. Press, vol. 88, p. 196,

Description of ore body of Ajax mine, Cripple Creek.

OoUier, A. J.

1. The tin deposits of the York region, Alaska. U. S. Geol. Surv., Bull. 229, 61 pp., 1904. Contains bibliograpiiy of tin.

OoUier, D. C.

1. Notes on chalk and Cretaceous deposits in eastern Colo rado. Am. Jour. Sci., 2nd ser., vol. 41, pp. 401-403,

Belemnites and Mososaurus.

Collins, A. L..

1. Gold milling in Gilpin County, 1897. Min. Ind., vol. 6,

pp. 366-367, 1898.

2. Note on the occurrence of carbonic acid gas in certain

veins of Gilpin County. Colo. Sci. Soc, Proc, vol. 6, pp. 1201 23, 1898.

OollinSi George E.

1. The relative distribution of gold and silver values in the

ores of Gilpin County. Inst. Mg. and Met., Trans, vol. 12, pp. 480, must., 1902-1903.

2. Values in the ores of Gilpin County. Ores and Metals,

vol. 13, no. 12, p. 23, 1904. Extract from Mining and Metallurgy of London.

62 Bibliography Of Colorado Oeolooy

Oollins, George E. — Continued.

3. Metal mining in Colorado during 1905. E. and M. J.,

vol. 81, pp. 32-33, 1906.

Discusses progress made in mining during year 1905 in Cripple Creek, Leadville, San Juan, Ouray, Tellurlde, Silverton, Boulder, Gilpin, Clear Creek. ' Includes discus- sion of zinc industry, mining of rare minerals, and the work of the smelters.

4. Colorado gold and silver mining. Min. Ind., vol. 14, pp.

223-226, 1906.

5. Colorado mining in 1906. E. and M. J., vol. 83, pp. 29-30,

Discusses the progress made during the year 1906 in Cripple Creek, Leadville, San Juan, northern counties, placer mining and rare minerals.

6. Colorado mining, 1907. E. and M. J., vol. 85, pp. 37-38,

Discussion of progress made during the year 1907 in Cripple Creek, Leadville, San Juan, Boulder, Gilpin. Clear Creek Counties, and the mining of rare minerals.

7. Gold and silver mining, 1908. Min. Ind., vol. 17, pp. 364

367, 1909.

Review of mining conditions at Cripple Creek, Ouray, Telluride, Silverton, Leadville, Aspen, and Gilpin County, during the year 1908.

8. Review of gold and silver industry, 1909. E. and M. J.,

vol. 87, pp. 104-106, 1909.

Mining conditions of Cripple Creek, San Juan, Lead- ville, Aspen, Gilpin. Clear Creek. Boulder, and Summit discussed. Also mining of lead, zinc, copper, tungsten, vanadium and uranium for year 1908.

9. Colorado: review of mining conditions for 1909. E. and

M. J., vol. 89, pp. 97-99, 1910.

10. Lessons from Gilpin county practice. >Ig. and Sci. Press,

vol. 101, pp. 366-371, must., 1910.

11. Metal mining in Colorado in 1911. E. and M. J., vol. 93,

p. 59, 1911.

12. The application of genetic theories to the search for

local enrichments in veins. Colo. Sci. Soc, Proc, vol. 10, pp. 211-232, 1913.

Colorado School of Blines.

1. Colorado coal and coke. E. and M. J., vol. 19, pp. 331-

332, 1875.

Analyses of coal and coke.

Bibliography Of Colorado Geology 68

Oolton, G. W. and C. B.

1. Sectional and topographic map of Colorado. 30x40

inches, colored, New York, G. W. and C. B. Colton,

2. Map of Wyoming, Colorado and Utah. 16x24 inches,

colored, New York, G. W. and C. B. Colton Co., 1876.

3. New sectional map of the state of Colorado. 25x40

inches, New York, G. W. and C. B. Coltoti Co., 1878.

Oomstock, Theodore B.

1. Notes on the geology and mineralogy of San Juan County.

A. I. M. E., Trans., vol. 11, pp. 165-191, map, 1883.

2. The distribution of San Juan County ores. E. and M. J.,

vol. 37, p. 208, cont., 1884.

3. Some peculiarities of the local drift'of the Rocky Moun-

tains. Am. Nat., vol. 20, pp. 025-927, 1886. Abstract : Am. Assoc. Adv. Sci., Proc, vol. 35, p. 233, 1886.

4. Remarkable extinct geyser basin in southwest Colorado.

Am. Nat., vol. 20, pp. 963-965, 1886. Abstract: Am. Assoc. Adv. Sci., Proc, vol. 35, p. 232, 1886; Am. Jour. Sci., 3rd ser., vol. 32, p. 320, 1885.

5. Supermetamorphism and vulcanism. Am. Nat., vol. 20,

pp. 1006-1008, 1886.

6. The veins of southwestern Colorado. Read to Am. Assoc.

Adv. Sci., 1886, Am. Nat., vol. 20, pp. 1043-1044, 1886. Abstract: Am. Jour. Sci., 3rd ser., vol. 32, p. 320,

7. The geology and vein structure of southwestern Colorado.

A. I. M. E., Trans., vol. 15, pp. 218-265, Tllust., map,

8. Supermetamorphism; its actuality, inducing causes, and

general effects. Hints toward a theory of vulcanism. (Abstract.) Am. Assoc. Adv. Sci., Proc, vol. 35, pp. 232-233, 1887.

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rado: A reply to the criticisms of Mr. Emmons. A. I. M. E., Trans., vol. 17, pp. 261-264, 1889.

Oomstock, W. H., and Allen, 0. D.

1. Bastnasite and tysonite from Colorado. See Allen, O. D. and Comstock, W. H.

04 BIBLiOORAPUY OF COLORADO OEOLOGY

Oonkling, A. R.

1. Report on the geolog.v of the mountain ranges from La

Veta Pass to the head of the Pecos. Wheeler Survey, Ann. Rept., 1876, Appendix JJ, pp. 191>-202, 1876.

2. Report on the lithology of portions of southern Colorado

and northern New Mexico. Wheeler Survey, Ann. Rept., 1877, pp. 1295-1298, Appendix NN, 1877.

3. Report on the foothills facing the plains from latitude

35° 30' to 30°, approximately. Wheeler Survey, Ann. Rept., 1877, pp. 1298-1303, Appendix NN, 1877.

Conrad, Timothy A.

1. Chalk at Smoky Hill, Colorado. Smith. Inst., Rept., 1865,

p. 125, 18G6.

2. Descriptions of new mollusks from Cretaceous beds of

Colorado. Hayden Surv., 7th Ann. Rept, pp. 455-456.

This is an appendix to Chapter II of Cope's report on the vertebrate paleontology of Colorado.

3. Description of a new Unio and fossil Goniobasis. Am.

Jour. Conch., vol. 4, p. 280, 1868.

Coons, A. T.

1. Slate, stone. U. S. Geol. Surv., Min. Res., 1908, pt. 11,

pp. 521-532, 533-579, 1910; U. S. Gcol. Surv., Min.

Res. 1910, pt. II, pp. 027-641, 1912; U. S. Geol. Surv.,

Min. Res. 1911, pt. II, pp. 723-739, 1912.

Mentions occurrence of deposit at Marble, Gnnnlson County.

Cooper, C. A.

1. The tungsten ores of San Juan County. K. and M. J., vol. 67, p. 499, 1899.

Cooper, J. 6.

1. The forests and trees of northern America as connected with climate and agriculture. Agri. Rept. of Com- missioner of Patents for 1800.

Cope, E. D.

1. Catalogue of the Pythonomorpha found in the Cretaceous strata of Kansas. Am. Philos. Soc, Proc, vol. 12, pp. 204-287, 1871. .2. The fish-beds of Osino, t'evada. Am. Nat, vol. 6, pp. 775-770, 1872.

BIBLIOOaAPHT OF COLORADO GEOLOGY 65

Oope, B. D. — Continued.

3. On the geology and paleontology of the Cretaceous strata

of Kansas. Hayden Surv., 5th Ann. Rept., pp. 318- 349, 1872.

4. On the Tertiary coal and fossils of Osino, Nevada. Am.

Philos. Soc, Proc, vol. 12, pp. 478-481, 1872.

5. (On Menotherium lemurinum, Hypisodus minimus, Hy-

pertragulus calcaratus, H. tricostatus, Protohippus, and Procamelus occiden talis.) Acad. Nat. Sci., Phila., Proc, 1873, pp. 419-420, 1873.

6. On the extinct Vertebrata of the Eocene of Wyoming,

observed by the expedition of 1872, with notes on the geology. Hayden Surv., 6th Ann. Kept., pp. 545-649, Illust., 1873.

7. Some remarkable and gigantic animals. The Independ-

ent, New York, Oct. 30, 1873.

8. On some new extinct Mammalia from the Tertiary of

the plains. Pal. Bull. no. 14, pp. 12, 1873.

9. Second notice of extinct Vertebrata from the Tertiary

of the plains. Pal. Bull. no. 15, pp. 1-6, 1873.

10. Third notice of extinct Vertebrata from the Tertiary of

the plains. Pal. Bull. no. 16, pp. 1-8, 1873.

11. Synopsis of new Vertebrata from the Tertiary of Colo-

rado, obtained during the summer of 1873. pp. 1-19, Washington Govt. Printing Office, Oct. 1873. On the title page of this paper it is said tabe extracted from the 7th Ann. Kept, of the U. S. Geol. Surv. Terr., but it does not appear in that volume.

12. Cretaceous age of the lignites of the west. Phila. Acad.

Sci., Proc, vol. 26, pp. 10-11, 12-15, 1874.

Remarks by Le Conte and Frazer, p. 11.

13. Synopsis of result of work in connection with Hayden's

United States Geological Survey during 1873. Acad. Nat. Sci., Phila., Proc, 1874, pp. 116-117, 1874.

14. On a new mastodon and rodent. Acad. Nat. Sci. Phila.,

Proc., 1874, pp. 221-223, 1874.

15. Report on the vertebrate paleontology of Colorado. Hay

den Surv., 7th Ann. Kept., pp. 427-533, Illust., 1874. Abstract : Jour, de Zoologie, vol. 4, pp. 354-359.

16. On some new fossil Ungulata. Acad. Nat. Sci., Phila.,

Iroc, 1875, pp. 258-261, 1875. From Pal. Bull. no. 19.

66 Bibliography Of Colohado Geology

Oop6, E. D. — Continued.

17. On the supposed Carnivora of the Eocene of the Rocky

Mountains. Pal. Bull. no. 20, pp. 1-4, 1875.

18. Report of the stratigraphy and Pliocene vertebrate pale-

ontology' of northern Colorado. Hayden Surv., Bull.,

vol. 1, no. 1, First series, pp. 9-28, 1875.

Includes descriptions of Carnivora, Perissodactyla, Artiodactyla, besides supplementary additions to the "synopsis of new Vertebra ta from the territory of Colo- rado, 1873."

19. Review of the Vertebrata of the Cretaceous i)eriod found

west of the Mississippi River. Hayden Siirv., Bull., vol. 1, no. 2, 1st series, pp. 3-48, 1874.

20. Supplementary notices of fishes from the fresh water

Tertiaries of the Rocky Mountains. Hayden Surv., Bull., vol. 1, no. 2, pp. 49-51, 1874.

21. On the fishes of the Tertiarv shales of the South Park.

Hayden Sui-v., Bull., vol. 1, no. 1, 2nd ser., pp. 3-5,

22. The Vertebrata of the Cretaceous formations of the west.

Hayden Surv., Mono. 2, 302 pp., II lust, 1875. -23. Report on the geology of that part of northwestern New Mexico examined during;: the field season of 1874. Wheeler Surv., Ann. Re|)t., 1874, pp. 981-1017, Ap- pendix LL, pp. 61-97, II lust, 1875.

Includes notes on the geology and paleontolog>' of the eastern slope of the Rio Grande Valley in Colorado.

24. The largest known saurian. Am. Nat., vol. 11, p. 629,

25. On reptilian remains from the Dakota of Colorado. Am.

Philos. Soc, Proc, vol. 17, pp. 193-196, 1877.

26. Report on the geology of the region of the Judith River,

Montana, and on vertebrate fossils obtained on and near the Missouri River. Ilayden Surv., Bull., vol. 3, no. 3, pp. 565597, lUust., 1877. .

27. On a carnivorous dinosaurian from the Dakota beds of

Colorado. Hayden Surv., Bull., vol. 3, no. 4, pp. 805-806, 1877.

28. On a gigantic saurian from the Dakota e])och of Colo-

rado. Pal. Bull., no. 25, pp. 5-10, 1877.

29. On Amphicoelias, a genus of saurians from the Dakota

epoch of Colorado. Pal. Bull., no. 27, pp. 2-3, 1877.

Bibliography Of Colorado Qbology 57

Cope, B. D. — Continued.

30. Report upon the extinct >'ertebrata obtained in New

Mexico, by parties of the expedition of 1874; Wheeler Surv., vol. 4, 370 pp., Illust, 1877. Abstract: Am. Jour. Sci., 3rd ser., vol. 15, p. 56, 1878.

31. The saurians of the Dakota epoch. Am. Nat., vol. 12,

pp. 56-57, 1878.

32. On the saurians recently discovered in the Dakota beds

of Colorado. Am. Nat., vol. 12. pp. 71-85, 1878.

33. A new genus of Dinosauria from Colorado. Am. Nat.,

vol. 12, pp. 188-189, 1878.

34. Contributions to the fossil flora of the western territories.

Part II. The tertiary flora, by L. Lesquereux. Am. Nat., vol. 12, pp. 242-246, and 332, 1878.

35. A new opisthocoelious dinosaur. Am. Nat., vol. 12, p.

406, 1878. Reprinted in Annals and Mag. Nat. Hist, 5, vol. ii, p. 194.

36. The species of Rhinoceros of the Loup Fork epoch. Am.

Nat., vol. 42, pp. 488-489, 1878.

37. A new species of Amphicoelias. Am. Nat., vol. 12, pp*

563-564, Illust., 1878.

38. Descriptions of new Vertebrata from the up|)er Tertiary

formation of the west. Am. Philos. Soc, Proc, vol. 17, pp. 219-231, 1878. Also as part of Pal. Bull., no. 28.

39. On the Vertebrata of the Dakota ei)och of Colorado. Am.

Philos. Soc, Proc, vol. 17, 233-247, 1878.

40. Descriptions of fishes from the Cretaceous and Tertiary

deposits west of the Mississippi river. Hayden Surv.,

Bull., vol. 4, no. 1, pp. 67-77, 1878.

Includes description of Trichophanes foliarum from Florissant.

41. Descriptions of new extinct Vertebrata from the upper

TertiaiT and Dakota formations. Hayden Surv.. Bull., vol. 4, no. 2, pp. 379-396, 1878.

42. A new genus of Perissodactyln. Am. Nat., vol. 13, p.

270, 1879.

43. The Amyzon Tertiary beds. Am. Nat., vol. 13, p. 332,

44. New Jurassic Dinosauria. Am. Nat., vol. 13, pp. 402-

404, Illust., 1879.

58 Bibliography Of Colorado Gboloot

Cope, E. D. — Continued.

45. On the extinct American rhinoceroses and their alliea.

Am. Nat., vol. 13, pp. 771-a-771-j, Illust., 1879.

46. Scientific news. Am. Nat., vol. 13, pp. 798-a-798-b, 1879.

Contains brief notice of excursions in Colorado and descriptions of fossils.

47. The relations of the horizons of extinct Vertebrata of

Euroj)e and North America. TTavden Rurv., Bull., vol. 5, no. 1, pp. 33-54, 1880.

48. On the extinct species of Rhinoceridae of North America

and their allies. Hayden Surv., Bull., vol. 5, no. 2, pp. 227-237, 1880.

49. A new fossil bird. (Palaeospiza bella.) Am. Nat., vol.

15, p. 253, 1881.

50. On the origin of the foot structures of the Ungulates.

' Am. Nat, vol. 15, pp. 209-273, Illust., 1881.

51. Geological news. Am. Nat., vol. 15, pp. 254, 340, 413,

1023, 1881.

52. On the etTe(*t of impacts and strains upon the feet of

Mammalia. An). Nat., vol. 15, pp. 542-548, Illust.,

53. The Rodentia of the American Miocene. Am. Nat., vol.

15, pp. 586-587, 1881.

54. The Tertiary- formation of the central region of the

United States. Am. Nat, vol. 10, pp. 177-195, Illust,

55. On certain Tertiarv strata of the Gi'eat Basin. Am.

Phil. Soc, Proc, voK 19, pp. 00-02, 1882.

50. On a wading bird from the Amyzon shales. Hayden Suit., Bull., vol. 0, no. 1, pp. 83-85, 1882.

57. Heview of the Rodentia of the Miocene period of North

America. Hayden Surv., Bull., vol. 6, no. 2, pp. 361-

380, 1882.

58. The extinct Rodentia of North America. (From White

River beds.) Am. Nat., vol. 17, pp. 43-57, 1883.

59. The extinct Rodentia of North America. Am. Nat, vol.

17, pp. 105-174, Illust, 1883.

60. The Vertebrata of the Tertiary formations of the west.

Book 1. Hayden Siirv., Mon., vol. 3, XXXV, 1009

Bibliogeapht Of Colorado Gboloot 59

Cope, E. D. — Continued.

pp., Illust, 1883. Review: Oeol. Mag., vol, 3, pp.

410419, 465-477, 512-521.

The Tertiary formations of the central region of the United States: Puerco, Wasatch, Bridgerr, Uinta, White River, Loup Fork, Equus beds. The horizontal relations of the North American Tertiaries with those of Europe. Part I. The Puerco, Wasatch and Bridger faunae: Pisces, Batrachia, Reptilla, Mammalia. Supplement to First Part: The Amyzon shales, Pisces, Aves. Part II. The White River and John Day faunae: includes strati- graphic studies of Colorado formations and descriptions of a number of fossils collected in Colorado.

61. Synopsis of the species of Oreodontidae. Am. Phil. Soc,

Proc, vol. 21, pp. 503-572, 1884 ; Pal. Bull., no. 38.

62. The Perissodact'la. Am. Nat., vol. 21, pp. 985-1007, 1060-

1076, Illust., 1887.

63. Synopsis of the vertebrate fauna of the Puerco series.

Am. Phil. Soc, Trans., new ser., vol. 10, pp. 298-361, Illust, 1888; Am. Nat, vol. 22, pp. 161-163, 1888.

64. Goniopholis in the Jurassic of Colorado. (Canon City.)

Am. Nat, vol. 22, pp. 1106-1107, 1888.

65. The Artiodactyla. Am. Nat., vol. 23, pp. 111-136, Illust,

66. The vertebrate fauna of the Equus beds. ,Am. Nat., vol.

23, pp. 161-165, 1887.

67. The horned Dinosauria of the Laramie. Am. Nat, vol.

23, pp. 715-717, Illust., 1889.

68. A review of the North American si)ecies of Hippotherium.

Am. Philos. Soc, Proc, vol. 26, pp. 429-458, Illust,

69. The age of the Denver formation. Science, vol. 13, p.

290, 1889.

70. On two new Perissodactyls from the White River Neocene.

Am. Nat, vol. 25, pp. 47-49, 1891.

71. Discovery of fish remains in Ordovician rocks. Am. Nat.,

vol. 25, p. 137, 1891.

72. The vertebrate fauna of the Ordovician of Colorado. Am.

Nat, vol. 27, pp. 268-2(;9. 1893.

60 Bibuooraphy Of Colorado Geology

Oorbett, T. B.

1. The Colorado Directory of Mines. Pub. by Rooky Moun- tain News Co. 1879.

Describes mines and mills, and the mining and milling corporations of Colorado, arranged alphabetically by counties, and gives a history of Colorado.

Ooues, Elliott, and Allen, J. A.

1. Monographs of North American Rodentia. Hayden Surv., Mon. 11, 1091 pp. 1877.

Ooues, Elliott.

1. Key to North American birds. 2nd edition, pp. XXX and 863, Illust., 1884. Part 4 is a "Systematic synopsis of the fossil birds of America.'' Colorado reference, p. 823.

Oountrjrman, T. R.

1. Rate of water recession at Cripple Creek. Mg. Sci., vol.

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Measurements of flow from Roosevelt drainage tunnel.

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Oonzens, M. E.

1. Map of Colorado gold region in Gilpin and Clear Creek counties. 8l/> x lOi inches, n. p., 1880.

Crafts, H. A.

1. Peculiar features of irrigation engineering in Colorado. Eng. Mag., vol. 14, pp. 829-841, Illust.. 1897.

Oragin, P. W.

1. Observations on llama remains from Colorado and Kan-

sas. Am. Geol., vol. 9, pp. 257-260, 1892.

Describes some remains from the volcanip ash beds of Kansas and from the Denver loess.

2. A new Cretaceous genus of Clyiieastridae. Am. Geol.,

vol. 15, pp. 90-91, 1895.

Describes Scutellaster cretaceous n. gen. et sp., from the Fox Hills division of the Cretaceous, near Colorado Springs.

3. On the stratigraphy of the Platte series, or Upper Cre-

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Bibliography Of Colorado Geology 61

Oragin, P. W. — Continued.

4. The capricorns, mammals of an Asiatic type, former in-

habitants of the Pikes Peak region. CJolo. College

Stndits, vol. 8, pp. 21-26, Illust., 1900.

Refers to fossils of late Pliocene and Pleistocene age.

5. Goat-antelope from the cave fauna of Pikes Peak region.

Geol. Soc. Am., Bull., vol. 11, pp. 610-612, Illust,

1900. Abstract: Science, new ser., vol. 11, p. 219,

Describes material of late Pliocene or Pleistocene age.

Craise, Fred A.

1. Taking coal from five western veins by one opening. Routt County. Black Diamond, Dec. 81, p. 16, 1910.

Cram, G. F.

1. Railroad and township map of Colorado. 151x201/ inches; 18x25 inches; 33x47 inches; 40x50 inches; 37x53 inches. (;hicago, G. F. Cram, 1878, 1910.

Crandall, A. R.

1. The occurrence of trap rock in eastern Kentucky. Am. Assoc. Adv. Rci., vol. .34, pp. 236-237, 1885.

Crane, \V. R.

1. Investigation of magnetite fields, with reference to ore

concentration. A. I. M. K,, Trans., vol. 31, pp. 405- 446, 1901.

2. Index of mining engineering literature. John Wiley and

Sons, 1900. Colorado references, pp. 158-167.

Crawford, R. D.

1. Geology and petrography of the Sugar Ijoaf district.

Boulder County. Univ. Colo. Studies, vol. 6, no. 2, pp. 97-131, map, Illust., 1900.

2. Intrusive rocks of the main tungsten area of Boulder

County. Colo. Geol. Surv., 1st Rept., pp. 23-36, 1909.

3. A preliminary n port on the geology of the Monarch min- ,

ing district, Chaffee County. Tolo. Geol. Surv., Bull. 1. 78 j>p., maps, Illust., 1910.

4. (leology and ore deposits of Monarch and Tomichi dis-

tricts of Colorado. Coh). Geol. Surv., Bull. 4, 317

pp., maps, Illust., 1913.

Describes the general features, the stratigraphy, the petrography of the igneous rocks, the geologic structure, the mineralogy, the metamorphism, and the occurrence and character, relations, and origin of the ore deposits.

62 Bibliography Of Colorado Geology

Crawford, R. D. — Continued.

Gives nine analyses of rocks of the district, and compares them with rocks of the Elk, West Elk Mountains, Lead- ville, Tenmile and Breckenridge areas, analyses of which are quoted from the reports of the U. S. Geological Sur- vey on those districts. Includes topographic and geologic maps and sections.

Crawford, R. D., and Oeorge, R. D.

1. The Hahns Peak region, Routt County. See George, R. D., and Crawford, R. D.

OroU, H. V.

1. The chlorination mill at Colorado City. K. and M. J., vol. 6G, p. 425-420. Illust., 1898.

Crook, Jas. K.

1. Mineral waters of the United States and their thera- peutic uses. 558 pp.. New York and Philadelphia, Lea Brothers and Co., 1899. (Colorado mineral springs, pp. 177-194.)

Crosby, William 0.

1. Sandstone dikes accompanying the great fault of Ute

Pass. Essex Inst, Bull., vol. 27, pp. 113-147, map,

Illust., 1897; Boston Soe. Nat. Hist., Jan. 20, 1897.

Describes the Igneous and sedimentary rocks of the district, and the occurrence of the faults, and discusses the origin of the sandstone dikes.

2. The great fault and accompanying sandstone dikes of Ute

Pass. Science, new ser., vol. 5, pp. 604-607, 1897.

Describes the occurrence. of the fault and discusses the origin of the dikes.

3. Archean-Cambrian contact near Manitou. Geol. Soc. Am.,

Bull., vol. 10, pi>. 141-164, Illust., 1899. Abstracts:

Am. Geol., vol. 23, p. 92; Science, now ser., vol. 9, p.

101, 1899.

Describes the contact, the structural features, modes of erosion, the form of the contacts and the character of the overlying sediments.

4. The hanging valleys of Georgetown. Am. Geol., vol. 32,

pp. 42-48, Illust, 1003: Tech. Quart., vol. 16, pp. 41-

50, Illust., 1903.

Describes certain geographic and physiographic fea tures, and dlRcusses their origin.

Bibliography Of Colorado Gbolooy 63

OroBSy Whitman.

1. On hypersthene andesite and on triclinic pyroxene in angitic rocks. U. S. Geol. Surv., Bull. 1, pp. 1942, 1883. Abstracts : Am. Jour. Sci., 3rd ser., vol. 23, pp. 139-144, 1883; Science, vol. 1, p. 177, 1883; Am. Nat, vol. 17, pp. 520-521, 1883.

3. Geological relations (in artesian wells of Denver). Colo.

Sci. Soc, Proc, vol. 1, pp. 77-83, 1884.

Definition of an artesian well, geology of the country adjacent to Denver, the Laramie formation, form and extent of the Denver basin.

4. On sanidine and topaz, etc.- in the nevadite of Chalk

Mountain. Am. Jour. Sci., 3rd ser., vol. 27, pp. 94-96,

5. A list of specially noteworthy minerals of Colorado. Colo.

Sci. Soc, Proc, vol. 1, pp. 134-144, 1884.

6. On the luster exhibited by sanidine in certain rhyolites.

. An unusual occurrence of topaz. U. S. Geol. Surv., Bull. 20, pp. 75-82, Illust., 1885. Specimens from Chalk Mountain and Ragged Mountain. 6a. Petrography of Leadville district. See Emmons, 9.

7. A remarkable landslide. Science, vol. 8, p. 293, 1886.

8. On the occurrence of topaz and garnet in lithophyses of

rhyolite. Colo. Sci. Soc, Proc, vol. 2, pt. 2, pp. 61-70,

1887; Am. Jour. Sci., 3rd ser., vol 31, pp. 432-438,

Describes the occurrence of the rhyolite at Nathrop. and gives descriptions of the roclcs and minerals named, with analyses of the rhyolite and garnet.

9. The Cimarron landslide, July, 1886. Colo. Sci. Soc,

Proc, vol. 2, pt. 2, pp. 116-126, 1887.

10. Note on phonolite from Colorado. (El Paso County.)

Colo. Sci. Soc, Proc, vol. 2, pp. 167-170, 1888. Ab stract : Am. Nat, vol. 23, pp. 171-172, 1889.

11. Observations in regard to the paramorphic origin of cer-

tain minerals. Colo. Sci. Soc, Proc, vol. 2, pp. 182- 183, 1888.

12. Eruptive rocks from Custer County. Colo. Sci. Soc,

Proc, vol. 2, pp. 228-250, 1888. Abstract: Am. Nat.,

vol. 23, p. 171, 1889; Min. Mag., vol. 8, pp. 289-292,

Occurrence, megascopic and microscopic description.

and analyses of rhyolite, trachyte, syenite, peridotite.

augite-diorite. and sanidinebearing andesite.

64 Bibliography Of Colorado Gboloqy

OroBB, Whitman — Continued.

13. The Denver Tertian* formation. Am. Jour. Sei., 3rd ser.,

vol. 37. i)p. 21.279, 1889. Abstract : Colo. Sci. Soc,

Proc, vol. 3, pp. 119-133, 1889.

Area occupied, characteristic outcrops, stratigraphic relations, mechanical constitution, peculiar and charac- teristic nature of the materials in the Denver sediments, conclusions irom the composition of the heds, fossil flora, invertebrate fossils.

14. Notes on some 8(condary minerals of the amphibole and

pyroxene groups. Am. Jonr. Rei., 3rd ser., vol. 39, pp. 359-370, 1890.

15. Constitution and origin of si)herulites in acid eruptive

rocks. Wash. I'hil. Soc, Bull., vol. 11, pp. 411-443, Illust, 1891. Reviewed : Am. Geol., vol. S, jjp. 387-392.

U). On alunite and diaspore from the Rosita Hills, Am. Jour. Sci., 3rd ser., vol. 41, pp. 466-475, 1891.

17. Geologj' of the Rosita Hills, Custer County. <'olo. Sci.

Soc. Proc, vol. 3, pp. 269-279, 1891.

Discusses the eruptive history of the district, describes the rocks, and gives brief notes on the mines.

18. Post-Laramie deposits in Colorado. Am. Jour. Sci., 3rd

ser., vol. 44, pp. 19-42, 1892. Abstracts: Am. Geol.,

vol. 10, pp. 256-257, 1892; vol. 16, pp. 120-124; Am.

Xat., vol. 27, p. 471, 1893.

Describes deposits in various parts of the state and discusses the age of the Lake-bed deposits.

19. The Post-Laramie beds of Middle Park, Colo. Sci. Soc,

Proc., vol. 4, pp. 192-213, 1892.

Gives historical sketch of the work done and reviews the literature on this region. Describes the character of the beds, called doleritic breccia by Marvine, and the constitution of the lignitic beds. Discusses the strati- graphic relations and reviews the evidence of the fossil flora as to the age of the Middle Park beds.

20. On a stories of peculiar schists near Salida. Colo. Sci.

8oc., Proc., vol. 4, pp. 286-293, 1893; Am. Geol., vol.

11, p., 120, 1893.

Reviews the representation of the geology of the region on the Hayden Atlas, and indicates the general character of the necessary corrections. Describes the stratigraphy and general character of the schists, and discusses their origin and relationships.

Bibliography Of Colorado Geology B5

Cross, Whitman — Continued.

21. Igneous rocks from the coal and iron I'egious of Coahuila

and Nueva Leon, Mexico, collected by R. T. Hill. Am.

Jour. Sci., 3rd ser., vol. 45, pp. 119-120, 1893. Diorite described.

22. Itinerary, Nathrop to Salida. Colorado Springs to Den-

ver. Excursion to Morrison. Excursion to Golden. Int. Cong. GooL, Compte Kendu, 5th sess. pp. 423 424, 430-442, 1803.

Describes the geology alon the railroad between tliese points.

23. The laccoiitic mountain groups of Colorado, Utah, and

Arizona. U. S. Gcol. 8niT., 14th Ann. R(pt., pt. 2,

pp. 1(>5-241, II lust., 1804.

Reviews the litem ture of the laccoiitic theory. Describes the laccolites of the Henry, West Elk, San Mifjuel, La Plata. Carriso, El Late, Abajo, and La Sal mountains, Mosquito Range, and the intrusive rocks of the Tenmile district, Colorado. Discusses the chemical and mineralogical characters of laccoiitic rocks, the con- ditions under which they were formed, and the forms and origin of laccolites.

24. Pikes Peak folio. V, S. (ieol. Surv., Gcol. Atlas of U. S..

folio 7, 1804. (Cross, Whitman, and Penrose, K.

A. F.)

Describes the topograi)hic feiitures, the granite and metamorphic rocks, the occurrence and distribution of the Algonkian, Cambrian. Silurian, Carboniferous, Jura- trias. Cretaceous, and Kocene strata. Describes thf occurrence and i)etrographic characters of diabase, sycn ite, andeslte, rhyolite, trachyte, phonolite, the geographif distribution of tlie sedimentary and igneous formations, and the structural development of the region. Includes a topographic, colored a real geologic, economic geologic, and structure section maps.

25. Instrusive sandstone <likos in jjianite. (ieol. Soe. Am.,

Bull., vol. 5, pp. 225-2;]0, Illust., L04; Am. Geol., vol.

13, J). 215, 1804; Am. Jour. S<i., 3rd sor., vol. 47, p.

142; Am. Nat., vol. 28, pp. 412-413, 1S04.

Describes the portion of Colorado, Pikes Peak region, where the dikes occur, their characteristics, and mode of occurrence. Describes the dike rock and discusses the origin of dikes.

(S)

/

66 Bibliography Op Colorado Obolooy

Cross, Whitman — Continued.

26. Igneous rocks of the Telluride district. Colo. Sci. Soc,

Proc., vol. 5, pp. 225-241, 1898.

Describes the general character and distribution of the igneous rocks, the occurrence of diorite stocks and of intrusive rocks in the Cretaceous shales. Includes description of the volcanic series of the western San Juan district.

27. Geology of Silver Cliff and the Rosita Hills. U. S. Geol.

Surv., 17th Ann. Rept., pt. 2, pp. 269-403, maps, Illust.,

Describes the geology and geologic relationships of the regions and the petrographic characters, occurrence and distribution of the gneiss, granite, dike rocks, and volcanic series. Presents a geologic map of the region.

28. An analcite basalt from Colorado. Jour. Geol., vol. 5,

pp. 684-693, 1897.

Describes the petrographic and chemical characters of this rock from the basin, near Cripple Creek, gives analyses, and discusses relationships with allied rocks.

29. Geology of the Cripple Creek gold mining district. Colo.

Sci. Soc., Proc, vol. 5, pp. 24-49, 1898.

Describes the general geology of the region and the occurrence and character of the volcanic rocks. Dis- cusses the relationship of the mineral deposits to the rock masses.

30. The San Miguel formation. Colo. Sci. Soc, Proc, vol.

5, pp. 235-241, 1898.

Describes the character, relationships, and distribution of the formation and discusses its Eocene or upper Cretaceous age.

31. Landslides of the Rico Mountains. Geol. Soc. Am., Bull.,

vol. 11, p. 583, 1900; Science, new ser., vol. 11, p. 101,

#

32. Outline of geology of the Silverton quadrangle. U. S.

Geol. Surv., Bull. 182, pp. 29-39, 1901.

Describes the general characteristics of the sediment- ary and igneous rocks and the structural relationships of the region.

33. A new Devonian formation in Colorado. Am. Jour.

Sci., 4th ser., vol. 18, pp. 245-252, 1904.

Describes the character, occurrence, and geologic rela- tions of Devonian strata in the San Juan region of Colorado.

Riblioobaphy Of Colorado Gbology 67

Cross, Whitman — Continued.

34. Ppowersose (syenitic lamprophyre) from Two Buttes.

Jour. Geol., vol. 14, pp. 165-172, 1906.

Describes the occurrence, the macroscopic and micro- scopic characters, and the chemical composition, and compares it with similar rocks.

35. Stratigraphic results of a reconnaissance in weetem

Colorado and eastern Utah. Jour. Geol., vol. 15, pp.

634-679, Illust, 1907.

Discusses the correlation of Cretaceous, Jurassic, Tri- assic and Carboniferous formations.

36. The Triassic portion of the Shinarump group, Powell.

Jour. Geol., vol. 16, pp. 97-123, 1908.

:7. Wind erosion in the plateay country. Geol. Soc. Am.,

Bull., vol. 19, pp. 53-62, Illust, 1908.

Describes the occurrence of a red soil in Colorado and Utah, believed to have been formed from material trans- ported by wind, and the evidences of eolian erosion in Utah.

The Laramie formation and the Shoshone group. Wash. Acad. Sci., Proc, vol. 11, pp. 27-45, 1909.

39.' Fluidal gneiss and contemporary pegmatites. Abstract: Science, new ser., vol. 29, p. 946, 1909.

40. The Slumgullion mud flow. Abstract: Science, new ser., vol. 30, pp. 126-127, 1909.

42. The natural classification of igneous rocks. London Geol.

Soc, Quart. Jour., vol. 66, pt. 3, pp. 470-506, 1910.

Describes certain dike rocks of Colorado from Engineer Mt. quadrangle and La Plata quadrangle, and gives analyses of quartz-trachyte and camptonites.

43. Geology of area near Lake City, Colorado. U. S. Geol.

Surv., Bull. 478, pp. 18-32, 1911.

Cross, Whitman, and Eakins, L. G.

1. On ptilolite, a new mineral. Am. Jour. Sci., 3rd ser.,

vol. 32, pp. 117-121, 1886; Colo. Sci. Soc, Proc, vol. 2, pt. 2, pp. 71-76, 1886.

2. A new occurrence of ptilolite. Am. Jour. Sci., 3rd ser.,

vol. 44, pp. 96-101, 1892. Abstract: Am. Nat., vol. 27, p. 43, 1893.

Describes the chemical and mineral ogical character! s-

,1

tics of the rock in which ptilolite occurs.

68 Bibliography Of Colorado Geology

OrosSi C. Whitman, Eldridge, Oeo. H., and Emmons, S. F.

1. Anthracite and Crested Butte folio.

2. Denver Basin monograph. See Emmons, S. P., Cross,

Whitman, and Eidridge, Geo. H.

dross, Whitman, and Hillebrand, W. P.

1. Notes on some interesting minei*als occurring near Pikes

Peak. Am. Jour. Sci., 3rd ser., vol. 24, pp. 281-286,

must, 1882.

Detailed descriptions of topaz, phenaclte, and zircon and notes on others.

2. On the minerals, mainly zeolites, occurring in the basalt

of Table Mountain, near Golden. Am. Jour. Sci.,

3rd ser., vol. 23, pp. 452458, 1882.

Occurrence, crystallography, and chemical composition of apophyllite, calcite, and mesolite.

3. On minerals of the cryolite group recently found in Colo-

rado. Am. Jour. Sci.. 3rd ser., vol. 26, pp. 271-294,

Describes occurrence, physical and chemical characters of cryolite, pachnolite. gearksutite. and prosoplte of St. Peters Dome.

4. Contributions to the mineralogy of tlie Rocky Mountains.

IT. S. Oeol. Suit., Bull. 20, pp. 221-332, Illust., 1885. A description of the minerals from the basalt of Table Mountain. Golden, and minerals of the neighborhood of Pikes Peak, with an account of the manner of occur- rence, physical properties, and chemical analysis of same. Appendix by W. B. Smith.

Cross, Whitman, and Hole, Allen D.

1. En|2:ineer Mountain folio. Description of the Engineer

Mountain quadrangle. U. S. Geol. Surv., Geol. Atlas

of IT. S., folio no. 171, 1910. rFielcl edition, book

size.)

Describes the geography; general, structural, historical and economic geology, and the igneous rocks. The folio contains maps showing the topography, areal geology and structural geology, and numerous illustrations.

Gross, W' hitman, Howe, Ernest, and Ransome, F. Leslie.

1. Silverton folio. Geography and general geology of the

quadrangle. T'. S. Geol. Surv., (;<()1. Atlas of TT. S.,

folio no. 120, 1905.

Gives an outline sketch of the physical history and general geology, describes the occurrence, character, and relations of Archean, Algonkian, Cambrian. Devonian.

Bibliography Of Colorado Geology 69

Cross, Whitman, Howe, Ernest/ and Bansome, F. Leslie. — Con.

Carboniferous, and Tertiary rocks, of Quaternary depos- its, and of eruptive rocks, and the physiography and geologic history and structure, and discusses in detail the petrology of the quadrangle. Economic geology: Describes the system of fissures, the relations of the ores to the fissures, the minerals occurring in the lodes, and the character, distribution; origin and value of the ore deposits containing gold, silver and lead. By Fred- rick L. Ransome.

Cross, Whitman, and Howe, Ernest.

1. Red beds of sonthwestern Colorado and their correlation.

Geol. Soc. Am., Bull., vol. 16, pp. 447-498, Illust,

1905. Abstract: Science, new ser., vol. 21, p. 349,

Discusses the occurrence, character, and relations of strata, collectively called Red Beds, in southwestern Colorado, their subdivisions and correlation with Red Beds elsewhere.

Cross, Whitman, Howe, Ernest, and Irving, J. D.

1. Description of the Ouray quadrangle. U. S. Geol. Surv.,

Geol. Atlas of U. S., folio no. 153, 20 pp. Illust., 2

maps, structure-section and illustration sheets, 1907.

Describes the topography, the character, occurrence, and relations of Algonkian, Devonian, Carboniferous, Triassic, Cretaceous, Tertiary, and Quaternary deposits, and of igneous surface and intrusive rocks, geologic structure and history, and the economic resources, chiefly gold, silver and coal.

Cross, Whitman, Howe, Ernest, Irving, J. D., and Emmons, W. H.

1. Needle Mountains quadrangle. U. S. Geol. Surv., Geol. Atlas of U. S., folio no. 131, 1905.

Describes the physiographic features, the occurrence, character, and relations of metamorphic and igneous rocks, and of Algonkian, Cambrian, Devonian, Carbonif- erous, and Tertiary strata, and the geologic structure and history of the area. Describes the character, occurrence, and relations of the gold and silver ores.

Cross, Whitman, and Iddings, J. P.

1. On the wide spread occurrence of allanite as an accessory mineral constituent of many rocks. See Iddings, J. P., and Cross, Whitman.

70 Bibliography Of Colorado Geology

Orofli, Whitman, and Penroae, R. A. P., Jr.

1. Gteology and mining industries of the Cripple Creek dis- trict. Part I. General geology of the Cripple Creek district. Part II. Mining geology of the Cripple Creek district. U. S. Geol. Surv., 16th Ann. Rept., pp. 13-109, Illust., with supplemental map of the

Cripple Creek district, 1895.

Chap. L Describes the geographic position and geo- logic character of the district and its recent physio- graphic changes. Chap. II. Hock formations. Describes the petrographic character of the granite, schist, diabase, phono] ite, nepheline syenite, augite syenite porphyry, andesite, tufiP, breccia, rhyolite, and the High Park lake beds. Chap. III. The Cripple Creek volcano. Descrlbe%i the constitution and distribution of the fragmental mate- rials and the character of the volcanic phenomena. Chap. IV and V.. Comprise a description of the distribu- tion of the volcanic rocks in the central area and itp outlying districts. Chap. V and VL Give an historical account of mining at Cripple Creek. Describe the min- eralogic character and superficial alteration of the gold ores. Discuss the mode of occurrence and deposition of the ores. Contain detailed descriptions of the mines. Contain a discussion of the chemical characters of calav- erite by W. F. Hillebrand and of its crystal! ographic characters by S. L. Penfleld.

Cross, Whitman, and Purington, Chester Wells.

1. Description of the Telhiride quadrangle. U. S. Geol. Surv., Geol. Atlas of IT. S., folio no. 57, 1899. Re- view : Am. Jour. Sci., 4th ser., vol. 9, p. 387, 1900.

Describes the general physiography and geology of the San Juan region, and the occurrence and character of Llie Algonkian, Jura-Trias, Cretaceous, Tertiary and igneous rocks of the quadrangle, and discusses the geologic his- tory. Includes topographic and geologic maps, columnar sections, and special Illustrations. Economic geolog>': Describes the fissures and veins of the region, and the occurrence, character, and origin of the gold and silver ores.

Cross, Whitman, and Ransome, P. L.

1. Description of the Rico quadraugle. U. S. Geol. Surv.,

Geol. Atlas of U. S., folio no. 130, 1905.

Describes general geologic structure and relations of the region, the character and occurrence of ore-bearing veins and fissures, character, occurrence and origin of the ore bodies and associated minerals, and the mining operations.

Bibliography Of Colorado Geology 71

OroM, Whitman, Spencer, Arthur (.'oe. and Pnrinn, Chester

Wells.

1. Description of La Plata quadrangle. U. S. Geol. Surv.,

Geol. Atlas of U. S., folio no. 60, 1899.

Describes the geographic and physiographic features, the character and occurrence of the Juratrlas, Creta- ceous, Eocene, and Pleistocene strata and igneous rocks, and the geological structure. Includes a statement of the general geologic problems of the region. Economic geology by C. W. Purington. Occurrence of gold and silver ores, placer deposits and the occurrence of coal.

CroBB, Whitman, and Spencer, Arthur Coe.

1. Geology of the Rico Mountains. U. S. Geol. Surv., 2l8t

Ann. Kept., pt. II, pp. 15-165, Illust., 1900.

Gives general outline of the geology of the region and a description of the Algonkian, Devonian, Carboniferous, and Jufa-Trlas sediments, of the character and occur- rence of the igneous rocks, and of the occurrence of landslides. Discusses the structure, erosion, and recent geologic history of the range.

Cro68, B. T.

1. Notes on aquamarine from Mount Antero. Am. Jour.

Sci., 3rd ser., vol. 33, pp. 101-102, 1887.

2. Notes on a new to[)az locality. Am. Jour. Sci., 3rd ser.,

vol. 20, pp. 484-485, 1883.

Describes the occurrence and character of topaz from near Pikes Peak.

Crow, Wade L.

1. The Breckenridge placer problem. Colo. School of Mines, Bull., vol. 1, pp. 194-220, 1901. Abstract: Mg. Kept., vol. 45, pp. 30-38, Illust., 1902.

Crows, Thomas B.

1. Researches upon the telluride gold ores of Cripple Creek. Mg. Sci., 'vol. 00, pp. 100-108, 1909; Mg. and Sci. Press, vol. 99, pp. 427-428, 091-859, 1909; vol. 100,

p. 135, 1910.

Describes treatment of the ores.

Oumenge, E.

1. Von Diestite: A telluride of silver and bismuth. Bull., Soc. Min., vol. 22, p. 25, 1899.

Occurrence of mineral in threads with copper minerals and auriferous pyrite in the Hamilton and Little Gerald

72 Bibliography Of Colorado Geoloot

Oumenge, E.— Continued.

mines on Mount Sierra Blanca, Colorado. Named for Mr. von Diest, director of the Lead Mining Company. San Luis, Colorado.

Cumenge, E., and Freidel, C.

1. Description of carnotite. Comptes Rendiis, vol. 128, p. 532, 1899. Bull. Soc. Min., vol* 22, p. 26, 1899.

Gummings, G. W.

1. Gold in gravel deposits. Mg. Ind., vol. 1, p. 10, 1887.

Ourle, J. H.

1. The gold mines of the world. Second edition, London,

Colorado reference, pp. 234-243; brief review of diffei- ent mining regions of the state, and of larger mines.

Curran, Thomas F. V.

1. Carnotite in Paradox Valley. K. and M, J., vol. 92, pji. 1287-1288, 1911.

Curry, F. E.

1. San Miguel's mines need good work only. Pacific Coast Miner, vol. 7, pp. 216-218, 1903.

Curtis, n. A.

1. Boulder natural gfis. W. Cliom. and Met., vol. 4, pp. 239-

244, 1908.

History, description of wells, and analysis of giis.

Curtis, Roy P., and Bradford, A. H.

1. Dredging at Breckenridge. Seo Bradford, A. H., and (urtis, Roy P.

Dalrymple, J.

1. The Colorado coal industry in 1011. Coal Ago, Jan. 6, p. 405, 1012.

Ball, W. H.

1. A table of the North American Tertiary horizons cor- related with one another, and with those of western Europe, with annotations. U. S. Geol. Surv., 18th

Ann. Rept, pt. II, pp. 327-318, 1898.

Defines the main divisions of the Tertiary and includes notes on the tahle.

Bibliography Of Colorado Geology 73

Dall, W. H., and Harrig, G. D.

1. Correlation papers, Neocene. U. S, Geol. Surv., Bull.

84, 349 pp., II lust., 1892. (Reviewed, Am. Jour. Sci.,

3rd ser., vol. 45, pp. 351-354, 1893; Am. Geol., vol.

12, pp. 399402, 1893.)

Description and correlation of Loup Fork and White River groups, Pliocene beds and Monument Creek group, pp. 304-308.

Daly, R. A.

1. Origin of the alkaline rocks. Geol. Soc. Am., Bull., vol.

21, pp. 87-118 (discussion, p. 785) 1910. Abstract:

Science, new ser., vol. 32, p. 220, 1910.

Describes rocks from Georgetown, Cripple Creek and Spanish Peaks.

Dalzell, T. J.

1. Colorado's metal output. Mg. World, vol. 28, pp. 603-

604, 1908.

2. Colorado's metal production. E. and M. J., vol, 85, p.

1042, 1908.

3. Biennial report of the Colorado State Bureau of Mines,

1909-10. no pp., 1911.

Reviews gold, silver, copper, zinc, tungsten, vanadium, iron, oil, stone, cement, and discusses mining, milling and metallurgy practice, and mining law.

Dana, E. S.

1. On some tellurium and vanadium minerals, by F. A.

Genth. Am. Jour. Sci., 3rd ser., vol. 14, pp. 423-425,

Reviews paper by Dr. Genth and gives characteristics of three new minerals from Colorado: coloradoite, mag- nollte, and ferrotellurite.

2. Mineralogical notes. Am. Jour. Sci., 3rd ser., vol. 27,

pp. 479-481, II lust., 1884.

Includes crystallographic description of tysonite from Colorado.

3. New minerals. Smith. Inst., Ann. Kept. 1882, pp. 543-

549, 1884.

Description of many new minerals, several of which were found in Colorado. The Colorado varieties are: alaskaite, beegerite, gunnisonite (not a distinct min- eral), ilesite, siderophylllte. The descriptions are in part quoted.

Ti BIBLIOGRAPHY OF COLORADO GEOLOGY

Dana, E. S. — Continued.

4. Mineralog}'. Smith. Inst., Ann. Kept. 1884, pp. 543-561 ,

Guitermanite and zunyite described.

5. Mineralog}-. Smith. Inst., Ann. Kept. 1887, pp. 449-476,

Ptllolite described.

6. Mineralogy for 1887-1888. Smith. Inst., Ann. Kept. 1888,

pp. 455-473, 1888.

Bibliography, and description of kaolinite and rbodo- chrosite from Colorado.

7. Ptilolite, a new zeolitic mineral described by Cross and

Eakins. Smith. Inst., Ann. Kept. 1887, p. 460, 1889.

From Table Mountain, Golden.

8. Descriptive mineralogy. Sixth edition. 1024 pp., New

York, John Wiley and Sons, 1895. Supplement, pp.

1025-1052.

Descriptions of minerals, with references to the litera- ture of the subject, pp. 1089-1091. Gives list of occur- rence of minerals in Colorado by counties and districts.

9. First Appendix to Dana's System of mineralogy. 75 pp..

New York, John Wiley and Sons, 1899.

Description and bibliography of new minerals.

10. Second Appendix to Dana's System of mineralogy*. 114

pp.. New York, elohn Wiley and Sons, 1909.

Description and bibliography of new minerals.

Dana, James D.

1. On the Appalachians and Rocky Mountains as time

boundaries in geological history. Am. Jour. Sci., 2nd ser., vol. 36, pp. 227-233, 1863.

2. Age of lignitic beds. Am. Jour. Sci., 3rd ser., vol. 11,

pp. 147-149, 1876.

3. Report on the geology of a portion of Colorado examined

in 1873, by Professor J. J. Stevenson, 376 pages. Am. Jour. Sci., 3rd ser., vol. 11, 412, 1876. Review of Wheeler's Survey Ro])ort, vol. 3, part 4.

4. Age of angiospermous plants refcnt'd to the Ci-etaceous.

Am. Jour. Sci.. 3rd ser., vol. 11, pp. 497-498, 1876.

Darton, N. H.

1. Bibliography of North American geology for 1886. U. S. Oeol. Surv., Bull. 44, 35 pp.. 1887.

Biblioguaphy Of Colorado Geology 76

Darton, N. H. — Continued.

2. North American geology- for ISSfi. Smith. Inat., Rept.

1886-1887, pp. 189-229, 1889.

3. Record of North American geology for 1887 to 1889 in-

clusive. U. S. Geol. Surv., Bull. 75, 173 pp., 1891.

4. Record of North American geology for 1890. U. S. Qeol.

Surv., Bull. 91, 88 pp., 1891.

5. Record of North American geelogj' for 1891. U. S. Qeol.

Surv., Bull. 99, 73 pp., 1893.

6. Catalogue and index of contributions to North American

geology 1732-1891. U. S. Geol. Surv., Bull. 127, 1045 pp., 1896.

7. Comparison of stratigraphy of the Black Hills with that

of the Front Range of the Rocky Mountains. Geol. Soc. Am., Bull., vol. 12, p. 478, 1901. Abstract: Science, new ser., vol. 13„ p. 188, 1901.

8. Catalogue of photographs belonging to the Geological

Society of America. Geol. Soc. Am., Bull., vol. 13, pp. 377-474, 1902. Colorado reference, pp. 395-400.

9. Preliminary report on the geology and underground water

resources of the central Great Plains. U. S. (Jeol.

Surv., Prof. Paper 32, 433 pp., Illust., maps, 1905.

Describes the occurrence, character, and relations of Archean, Algonkian. Cambrian, Ordovician, Carbonifer- ous, Triassic, Jurassic, Cretaceous strata, and Tertiary deposits. Giyes geological history of the central Great Plains region, the underground water, and other eco- nomic resources of the area.

10. Preliminary list of deep borings in the United States.

U. S. Geol. Surv., \V. S. Papers 57 and 149, 1905.

List of publications referring to deep borings in Colo- rado and record of borings by counties.

11. Discoverv of the Comanche formation in southeastern

Colorado. Science, new ser., vol. 22, p. 120, 1905.

12. Age of the Monument Creek formation. Am. Jour. Sci.,

4th ser., vol. 20, pp. 178-180, 1905.

Gives an account of additional evidence for the Oligo- cene age of the Monument Creek formation.

13. (ieology and underjrroiind waters of the Arkansas Valley

in eastern Colorado. V. S. Geol. Surv., Prof. Paper

52, 90 pp., map, Illust., 1906.

Describes the configuration and general geology, the occurrence, character and relations of Cambrian. Ordo-

76 Bibliography Of Colorado Geology

Darton, N. H. — Continued.

vlclan, Carboniferous. Triassic (?), Cretaceous, Tertiary, and Quaternary' formations and of Igneous rocks, the geological history, and the underground waters.

14. Fish remains in Ordovician rocks in Bighorn Mountains,

Wyoming, with synopsis of Ordovician geology of the Northwest. Geol. Soc. Amer., Bull., vol. 17, pp. il- 556, must., 1906.

15. Paleozoic and Mesozoic of central Wyoming. Geol. Soc.

Am., Bull., vol. 19, pp. 403-470, Illust., 1908.

Section of Casper formation given on the Colorado- Wyoming state line.

Davis, A. P.

1, River heights for 1896. U. S. Geol. Surv., W. S. Paper 11,

100 pp., 1897.

Stream measurements on the South Platte, Bear Creek, South Boulder, Boulder, St. Vrain, Big Thompson, Arkan- sas, Purgatory, Grand, Dolores, Fall Creek, Uncompah- gre, San Juan, Piedra and Animas rivers.

2. Report of progress of stream measurements for the cal-

endar year 1896. U. S. Geol. Surv., 18th Ann. Rept.,

pt. 4, pp. 1-419, Illust, 1897.

Stream measurements of the South Platte, Bear Creek, South Boulder, Boulder, St. Vrain, Big Thompson, Arkan- sas, Rio Grande, Dolores, Grand, Uncompahgre, San Juan, Piedra and Animas rivers.

Davis, Jefferson.

1. Repoii: of the Secretary of War on the several railroad

explorations. Pacific R. R. Rept., vol. 1, pp. 1-33,

Includes a report by Lieut. E. G. Beckwith on the examination of route near the 38th and 39th parallels of north latitude, explored by Capt. J. W. Gunnison, Corps of Topographical Engineers, pp. 17-19. This report con- tains notes on soil, streams, and topography.

Davis, W. H.

1. The microscope in a method of analysis in roasting sul- pho-telluride ores. W. Chem. and Met., vol. 4, pp.

137-147, 1908.

Treatment of ores from Wano mine, Boulder County.

Davis, William M.

1. Notes on geological observations in Colorado and Utah. Maefarlane's Am. Geol. Rwy. Guide, p. 165, 1879.

Bibliography Of Colorado Geoloot 77

Davis, William M. — Continued.

2. On the classification of lake basins. Boston Soc. Nat. Hist., Proc, vol. 21, pp. 315-381, 1883. Abstracts: Am. Nat, vol. 16, pp. 1028-1029, 1882; Am. Jour, Sci.. 3rd ser., vol. 24, p. 230, 1882.

li. The Colorado plains. Science, new ser,, vol. 5, pp. 33(5- 337, 1897.

4. Is Green River antecedent to the Uinta mountains?

Science, new ser., vol. 5, pp. 647-648, 1897,

Describes the structure and geologic history of the region.

5. Is the Denver formal ion lacustrine or fluviatile?

Science, new ser., vol. 6, pp. 619-621, 1897.

oa. The fresh water Tertiary formations of the Rocky Moun- tain region. Am. Acad. Arts and Sci., Proc, vol. 35, pp. 346-373, 1900.

6. The Rocky Mountain front. Science, new ser., vol. 6,

pp. 656-657; vol. 14, pp. 778-779, 1901.

7. Glacial erosion of the Sawatch Range. Appalachia, vol.

10, pp. 392-404, 1904; Harvard (oll. Mus. Comp.

Zool., Bull., vol. 49 (Geol. Series, vol. 8, no. 1), pp.

1-11, Illust., 1905.

Discusses various physiographic features and their origin through glacial erosion.

8. Hanging valleys in general. Science, new ser., vol. 25,

pp. 835-836, Illust., 1907.

Contains bibliography of papers on main-valley troughs "regarded as the results of glacial erosion," and especi- ally refers to La Plata Peak.

9. The Colorado canyon. Science, new ser., vol. 21, p. 860,

10. The Colorado Front Range. Assoc. Am. Geographers,

Annals, vol. 1, pp. 21-8:3, Illust., 1912.

11. Relation of geography to geology. (Colorado Front

Rang;) Geol. Soc. Am., Bull., vol. 23, pp. 93-124,

Dawson, J. W.

1. The chain of life in geological time; a sketch of the origin and succession of animals and plants. 292 pp., Illust., London, 1880.

78 Bibliography Of Colobado Oioloot

Day, D. T.

1. Mineral resources of the United States, 1885. U. S.

Geol. Surv., Min, Res. 1885, 576 pp., 1886.

Summary of production of bismuth, building stone, cement, coal, copper, fire clay, gold, gypsum, iron, lead, ndca, mineral waters, precious stones, and silver.

2. Mineral resources of the United States, 1886, U, S.

Geol. Surv., Min. Res. 1886, 813 pp., 1887.

Includes articles on resources of Colorado: "Coal," C. H. Ashburner and F. P. Chisholm; "Coke," J. D. Weeks; "Fire clay," W. C. Day; "Granite," W. C. Day; "Gypsum," W. C. Day; "Lead," C. Kirchoff, Jr.; "Marble," W. C. Day; "Mineral waters," A. C. Peale; "Structural material," W. C. Day; with a summary of production of copper, gold, iron, steel, manganese, silver, tin, and tellurium.

3. Mineral resources of the United States, 1887. U. S. Geol.

Surv., Min. Res. 1887, 832 pp., 1888.

Includes special articles on Colorado's resources: "Coal." C. A. Ashburner; "Coke," J. D. Weeks; "Iron," F. F. Chisholm; "Lead, Leadville and Aspen," C. Kirch- oft; "Natural gas," J. D. Weeks; account of occurrence of minerals, and summary of production of copper, gold, gypsum, iron and steel, iron ores, mineral waters, petro- leum, and silver.

4. Mineral resources of the United States, 1888. U. S.

Geol. Surv., Min. Res. 1888, 652 pp., 1890.

Summary of production of beryl, brick, coal, coke, fire- brick, kaolin, list of lead smelters, mineral springs, min- eral waters, petroleum, phenacite, sandstone, steel, topaz, and turquoise, with special articles on coal by C. A. Ashburner, and coke by J. D. Weeks.

5. Mineral resources of the United States, 1889-1890. U. S.

Geol. Surv., Min. Res. 1889-1890, 671 pp., 1892.

Statistics of oil production, summary of production of anthracite coal, brown hematite, cement, copper, granite, gypsum, iron, lead, limestone, ocher, pig iron, sandstone, silver, manganese, marble, metallic paint, mineral waters, and a special article on the structural material of the state of Colorado.

G. Mineral resources of the United States, 1891. U. S. Geol.

Surv., Min. Res. 1891, 630 pp., 1893.

Summary of production of cement, clay, copper, gold, silver, granite, gypsum, iron, limestone, manganese and manganiferous ores; marble, metallic paint, mineral waters, ocher, lead, sandstone; and special articles on coal, coke, and the gold and silver mines of Creede.

Bibliography Of Colorado Qboloot 70

Day, D. T.— Continued.

7. Mineral resources of the United States, 1892. U. S. Geol.

Surv., Min. Res. 1892, 850 pp., 1893.

Summary of production of agate, beryl, cement, coal, coke, copper, garnet, gold, silver, granite, gypsum, iron ores, lead, limestone, manganese, metallic paint, mineral waters, petroleum, phenacite, quartz, sandstone, silicified wood, topaz, turquoise; and a special article on coal by H. C. Hills.

S. Mineral resources of the United States, 1893. U. S. Geol.

Surv., Min. Res. 1893, 810 pp., 1894.

Summary of production of clay, coal by counties and divisions, coke, cryolite, gold, silver, granite, gypsum, iron ores, limestone, manganese, mineral waters; list of mineral springs resorts; petroleum, sandstone, turquoise; and a special article on the stones exhibited at the Columbian Exposition.

0. Mineral resources of the United States, 1895. U. S. Geol.

Surv., 17th Ann. Rept., pt. Ill, 2 vol., 1058 pp., Illust.,

Summary of production of lead, manganese, coal, coke, petroleum, natural gas, granite, sandstone, limestone, pottery, cement, mineral waters.

10. Mineral resources of the United States, 1897. U. S. Geol.

Surv., 19th Ann. Rept, pt. 6, 2 vol., 1357 pp., 1899.

Summary of production of asphaltum, clay, fuller's earth, granite, gypsum, limestone, marble, mineral paints, mineral waters, natural gas, petroleum, sand- stone, coal, coke, iron ores, manganese ores, copper, lead, silver; and a special article on coal.

11. Mineral resources of the United States, 1898. U. S. Geol.

Surv., 20th Ann. Rept., pt. 6. 2 vol., 1420 pp., Illust.,

Summary of production of anthracite, coal, coke, iron ores, manganese, gold, copper, asphaltum, cryolite, gran- ite, limestone, marble, mica, mineral waters, natural gas, petroleum, sandstone; with a special article on coal, giv- ing rank of Colorado as a coal-producing state.

12. Mineral resources of the United States, 1899. U. S. Geol.

Surv., 21st Ann. Rept., pt. G, 2 vol., 1290 pp., 1900.

Summary of production of Iron, coal (production by fields), coke, copper, gold, silver, iron ores, manganese, tungsten, uranium, amethyst, clay, fluorspar, fuller's earth, granite, gypsum, limestone, marble, mineral waters, natural gas, petroleum (Florence oil field), pyrite, sandstone, stone: and special articles on coal and coke.

80 Kibliooraphy Of Colorado Geology

Day, D. T.— Continued.

13. Mineral resourcen of the United States, 1900. U. S. Oeol.

Surv., Min. Res. 1900, 927 pp., 1901.

Summary of production of cement, clay, coal, coke, copper, gold, granite, g>'psum, iron ores, lead, limestone, lithographic stone, manganese ores, mineral waters, nat ural gas, petroleum, pig iron, pottery, sandstone, silver, tungsten, vanadium; and a special article on the gold deposits of Cripple Creek.

14. Mineral resources of the United States, 1901. U. S. Geol.

Surv., Min. Kes. 1901, 99C pp., 1902.

Summary of production of bismuth, cement, clay, coal, anthracite coal, coke, copper, cryolite, fuller's earth, gold, granite, gypsum, iron and steel, iron ores, lead, limestone, manganiferous ores, mica, mineral waters, molybdenum, natural gas, petroleum, pig iron, pottery, precious stone, sandstone, silver, stone, strontium, tung- sten, turquoise, uranium, and vanadium.

15. Mineral resources of the United States, 1902. U. S. Geol.

Surv., Mill. Res. 1902, 10.S2 pp., Illust.. 1902.

Summary of production of bismuth, brick and tile, cement, clay, coal, anthracite coal, coke, copper, gold, gypsum, iron ores, lead, limestone, manganiferous ores, mica, mineral wateirs, natural gas, sandstone, silver, tungsten, uranium, vanadium, and zinc.

HI. Mineral resources of the United States, lUOl}. S. Oeol.

Surv., Min. Res. 1903, 1204 pp., 1904.

Summary- of production of ammonia, asphaltum, brick, tile, cement, clay, coal, coal tar, ga.s. gas coke, gold, ropper, corundum, ferromanganese, granite, gypsum, iron ores, lead, limestone, manganiferous ores, mineral waters, molybdenum, natural gas. petroleum, pottery, sandstone, silver, slate, spiegeleison. stcMl. tungsten, una nium, vanadium, zinc.

17. Mineral resources of the United States, 11)04. V. S. (leol.

wurv., Min. Res. 1904, 12r,4 ])p., Illust., 1!M)5.

Summary of production of ammonia, asphaltum, bis muth, brick, tile, cement, clay, coal, coal tar, coke, cop- l)er, ferromanganese, fuller's earth, gadolinito, gas, gas folie. gold, granite, graphite, gyi)suni. iron ore:. lead, limestone, manganiferous ores, mica, mineral waters, natural gas', petroleum, pig iron, pottery, sand, sand stone, silver. sj)iegeloisen. steel, tungsten, uranium, vana dium. zinc.

Bibliography Of Colorado Gbology 81

Dav. D. T.— Ton tinned.

If. Minernl resonrrrs of ih( United Rtntes. 1905. F. ff. Oeol. .. Min. Reft. 1905. 1403 pp.. 1906.

SummaiT of production of ammonia, bismnth. brick, tile, cement, clay, coal, anthracite coal, coal tests, coal tar, water-gas tar, coke, copper, flint pebbles, fluorspar, s. oil. and water s. gras coke, glass sand, gold by counties, granite, graphite, gypsum, iron ores, lead. lime, limestone, manganiferous ores, marble, mica, mineral waters, petroleum, pig iron, platinum, pottery, rose quartz, sand and gravel, sand-lime brick, sandstone, sil- ver; list of smelting plants, sulnhur, tungsten, uranium, value of mineral products, vanadium, zinc.

19. Petrolonin. V. S. Oool. .. Min. Res. 1908, pt. TT. pp.

411412. 1909.

Summary of production of Boulder and Florence fields by months for 1907-1908.

20. PetroVnm. F. S. Oool. .. Min. Re. 1909, pf, TT. pj).

.70-877, 1909.

Summary of production of Boulder and Florence fields by months for 1908 and 1909.

21. Ppfrolonm. T. S. Hool. .. Min. Ros. 1910, pt. TT, p.

420. 1912.

Summary of production of Boulder and Florence .fields.

22. "NTntiirnl rns nnd uPtrolonm. F. S. Oool. ., Min. Res.

1911. Pt. TT. m.. 279 88.?, .8.85- 4S0, 1912. Tolorndo rpf- orrncp. p. .814, : 480, oil.

Day, W. r.

1. Omnitp indnsfrv of thp Fnitpd . E. and M. J.,

vol. 51, j)p, 49fi-497, lf91.

2. Stone. TT. R. rjpol. ., ir>th Ann. Rept.. pt. 4, 1895.

Describes deposits of sandstone (p. 486) in Boulder. El Paso. T-rfirimer. Eagle, Jefferson, Ts Animas, Fre- mont, Park, Huerfano, and Montezuma counties: lime- stone (p. 49fi> in Pitkin, Jefferson, T.a Plata. Boulder. Fremont. Pueblo, Larimer, Chaffee counties: pranite (p. 458) in Jefferson. Douplas. Gunnison. Clear Crpek. Chaffee. Larimer, and Boulder counties.

De Oou, R. E.

1. The tnatnipnt of zin<-lead oifs at Canon Citv. Oolo. Sch. of Minos. .. vol. 1. pp. .8.5-42, 1900.

De Cou, R. E., and Downer, R. H.

1. A description of the workinc: niines of Onray FountT. See Downer, R. FT., and Dp Ton, R. E.

92 RIBLIOQRAPHY OF COLORADO OlOLOGT

Demarety LeoD.

1. Les principaux gisemente de minerals de zinc des Etats-

Unis d' Amerique. Revue universelle des Mines (Liejje

and Paris), 4e ser., t. 6, pp. 221-256, Illust., 1904.

Describes the principal deposits of zinc ore in the United States, including observations on the character, occurrence, geology, etc.

Denison, Charles.

1. Rocky Mountain health resorts. Houghton, Osgood & Co., Boston, 1880.

Demnan, Heniy.

1, Colorado coal statistics, 1901. Mines and Minerals, vol.

22, p. 370, 1902.

2. Colorado coal statistics, 1902. Mines and Minerals, vol.

23, p. 322, 1903.

Denny, J. 0.

1. A glance at Colorado's famous mining record: Pacific

Coast Miner, vol. 7, pp. 202-205, Illust, 1903.

Review of mining and production of gold, silver, lead, and copper. Portraits of famous mining men.

Denton, William.

1. On a mineral resembling albertite from Colorado. Bos- ton Soc. Nat. Hist., Proc, vol. 10, pp. 305-30G, 1866.

Devereux, W. B.

1. Notes on iron-ore deposits in Pitkin Countj. A. I. M. E.,

Trans., vol. 12, pp. 638-641, 1884.

Describes the occurrence of llmonite and magnetite.

Dewey, P. P.

1. A preliminary descriptive catalogue of the systematic collections in economic geology and metallurgy- in the United States National Museum. U. S. Nat. Mus., Bull., vol. 42, 256 pp., 1901.

De Wolf, E. C.

1. Haulage system at Yak tunnel. Mines and Mining, vol.

16, no. 13, pp. 3-5, 1908.

2. The Newhouse tunnel. Mines and Mining, vol. 16, no.

15. pp. 3-4, Illust, 1908.

Biblioobapuy Of Colorado Qboloot 8S

Dinimoor, W. P. J.

1. Western practice in tunnel driving. Mg. Rept., toI. 56,

pp. 26-28, 1907.

Ophelia tunnel. Cripple Creek, described.

DoddSi Gideon S.

1. Geology and physiography of the mesas near Boulder. Univ. of Colo. Studies, vol. 6, no. 1, pp. 11-19, Illust,

Dodge, W. R.

1. Retreatment of mill tailings at Cripple Creek. Mg. Sci., vol. 64, pp. 528-530, Illust, 1911.

DooUttle, C. E.

1. The use of electric power transmission at Aspen. A. I. M. E., Trans., vol. 19, pp. 282-288, 1890.

Doolittle, C. H.

1. Some personal experiences on matting of ores at Lead- ville and Robinson. E. and M. J., vol. 75, pp. 558- 559, 1903.

Doolittle, C. H., and Jarvis, R. P.

1. Pyrite smelting in Leadville. A. I. M. E., Bull. 48, pp. 1003-1016, 1910.

Doolittle, P. W., and Eesner, H. J.

1. Comparative tests of sandstones and slags as concrete aggregates. See Kesner, H. J., and Doolittle, F. W.

Douglas, James.

1. Summary of American improvements and inventions in

ore crushing and concentrating, and in the metallurgy*

of copper, lead, gold, silver, nickel, aluminum, zinc,

mercury, antimony and tin. A. I. M. E., Trans., vol.

22, pp. 321-344, 1893. Leadville copper.

Douglass, Earl.

1. Some notes on the geology of southwestern Montana.

Carnegie Mus., Ann., vol. 3, pp. 407-428, 1905.

2. A geological reconnaissance in North Dakota, Montana

and Idaho, with notes on Mesozoic and Cenozoic geology. Carnegie Mus., Ann., vol. 5, pp. 211-288,

84 Bibliography Of Colorado Gboloqt

Douglass, Earl — Continued.

3. Preliminary descriptions of some new titanotheres from the Uinta deposits. Carnepe Mus., Ann., vol. 6, pp. 304-313, Illust, 1910.

Downer, R. H.

1. Ore deposits of the American-Nettie mine, Ouray. Colo. Sch. of Mines, Bull., vol. 1, pp. 104-107. Illust, 1901.

Downer, B. H., and De Cou, B. £.

1. A description of the working mines of Ouray County.

Colo. Sch, of Mines, Bull., vol. 1, pp. 242-259, 1901. Includes observations on the geology and on the char- acter, occurrence, and origin of the ore bodies.

Downer, Frank M.

1. Colorado. Beport of the Director of the Mint upon the

production of the precious metals in the United States

during the calendar year 1902, pp. 88-133, 1903.

Gives production of gold, silver, lead, copper, and zinc by counties for the year 1902, with brief notes on mining conditions, and metallurgy in the different mining dis- tricts of the state.

2. Colorado. Beport of the Director of the Mint upon the

production of the precious metals in the United States during the calendar year 1903, pp. 79-81, 1904.

3. The Denver mint and its operation. Mg. Sci., vol. 65,

p. 426, 1912.

Downey, Charles J.

1. A modern type of concentrator in Gilpin County. Mg.

Sci., vol. 64, pp. 52-54, Illust., 1911.

2. Cyaniding the sulphide ores of Idaho Springs. Mg. Sci.,

vol. 65, pp. 268-270, Illust., 1912.

Draper, Marshall.

1. Hahns Peak. Coll. Eng., vol. 17, pp. 437-438, 1897; Mg.

Ind. and Bept, vol. 14, no. 1 and 2, pp. 16-17, 1897.

Describes the geologic features of the region and the occurrence of the gold and silver ores.

2. Prospecting district of northern Colorado. Mg. Kept.,

vol. 39, pp. 12-15, Illust., 1899.

Description of Poudre Lakes district, Lulu Pass, Teller, Willow Creek, Gore Range, Gun Sight, Rabbit Ear and Muddy Pass, Steamboat Springs. Hahns Peak. Elkhead Mountains.

Biblioorapht Of Colorado Geology 85

Draper, Marshall — Continued.

3. The leasing system in Colorado. Mines and Minerals,

vol. 24, p. 260, 1904.

4. Mexican practice as applicable to the cyanidation of

Colorado ores. Low grade silver ores. Colo. School of Mines, Mag., Nov. p. 23, 1911; Mg. and Sci. Press, vol, 103, p. 684, 1911.

Drown, T. M.

1. Colorado iron ore and coal. E. and M. J., vol. 14, pp.

. 120 and 149, 1872.

Canon City deposits described.

Dnunm, Henry A.

1. 's pocket map of Boulder County. Scale, 8,000 ft. to inch, Boulder, Colo.

Duck, Geo. P.

1. The Delagua explosion. Mines and Minerals, vol. 31,

pp. 374-380, Illust, 1911.

2. The Cokedale explosion. Mines and Minerals, vol. 31,

pp. 658-662, Illust., 1911.

Dunbar, A. B.

1. International Mining Manual. Pub. by Western Mining

, Directory Co., Denver, 1909.

Embracing the principal operating metal mines, mills, smelting and refining plants in the United States, Mexico, and Canada, and coal mines of the western states, Mex- ico, and Canada.

Dwight, A. S.

1. Stone coal in the lead blast furnace. Mg. Ind. and Trad, vol. 9, p. 57, 1891.

Eakins, L.G.

1. On allanite and gadolinite. Colo. Sci. Soc, Proc, vol. 2,

pp. 32-35, 1886.

Describes physical and chemical characters of minerals from Devils Head Mountain, Douglas County.

2. Two sulphantimonites from Colorado. U. S. Qeol. Surv.,

Bull. 60, pp. 115-117, 1S90; Colo. Sci. Soc, Proc, vol.

3, pp. 73-76, 18S8 ; Am. Jour. Sci., 3rd ser., vol. 36, pp.

450-453, 1888.

Describes material from the Domingo mine, Gunnison County, and gives analysis.

80 Bibliography Op Coloiudo Geology

Eakins, L. G. — Continued.

3. Kaolin from the Waterfall mine, Gunnison County. U. S.

Geol. Surv., Bull. 60, p. 136, 1890.

An analysis and description of kaolin in Redwell Basin.

4. Efflorescence on sandstone, from Cliff Creek, Gunnison

County. IT. S. Geol. Surv., Bull. 60, p. 170, 1890.

5. Water from a spring near Denver. U. S. Geol. Surv.,

Bull. 60, p. 174, 1890.

6. Thirty-two coals from Gunnison County. U. S. Geol.

Surv., Bull. 64, pp. 55-56-57, 1890.

Analyses of coals from Anthracite Creek, Slate Creek, Ohio Creek, Green Mountain, Crested Butte, Gunnison County.

7. New analyses of astrophyllite and tscheffkinite. Am.

Jour. Sci., 3rd ser., vol. 42, pp. 34-38, 1891.

Description and* analysis of astrophyllite from St. Peters Dome.

8. Analysis of astrophyllite from El Paso County. U. S.

Geol. Surv., Bull. 78, p. 119, 1891.

9. Three minerals from Colorado, Gunnison and Custer

Counties. U. S. Geol. Surv., Bull. 90, p. 62, 1892.

Heulandite, diaspore, and alunite.

10. Minerals from Italian Peak, Gunnison County. U. S.

Geol. Surv., Bull., 113, p. 112, 1893.

Analyses of pyroxene, garnet, epidote, and soolecite.

11. Analytical methods used in Colorado. Mg. World, vol.

27, p. 106, 1907.

Eakins, L. 6., and Chatard, T. M.

1. Rocks from Colorado. U. S. Geol. Surv., Bull. 90, p. 69,

Analyses of rocks from Mount Marcellina, Storm Ridge, Mount Carbon.

Eakins, L. G., and Cross, \Whitman.

1. A new occurrence, of ptilolite. See Cross, Whitman, and Eakins, L. G.

Eakle, Arthur S.

1. Topaz crystals in the mineral collection of the United

States National Museum. U. S. Nat Mus., Proc, vol.

21, pp. 364-369, lUust, 1899.

Includes description of several crystals from Pikes Peak and Nathrop, Colorado.

Bibliography Of Colorado Qbologt S7

Eastman, Charles R.

1. On upper Devonian fish remains from Colorado. Am.

Jour. Sci., 4th ser., vol. 18, pp. 253-260, Illust., 1904.

Describes the occurrence and character of fish remains from Devonian strata in the San Juan region of Colo- rado, and gives a systematic description of a new form.

Eckel, Edwin C.

1. Cement materials and industry of the United States.

U. S. Geol. Surv., Bull. 243, 395 pp., Illust, 1905, and

Bull. 522, 401 pp., Illust, 1913.

Describes Portland cement materials, distribution, composition, industry, and gives bibliography on the subject. Colorado reference, Bull. 243, pp. 122-124, and Bull. 522, pp. 124-128.

2. Mineral industries of the United States. Eng. Mag., vol.

30, pp. 200-210, Illust, 1905.

Comparative production for 1903, of coal, copper, sil- ver, gold, lead, zinc, and iron.

3. The cement industry of the United States in 1908. U. S.

Geol. Surv., Min. Res., 1908, pt 2, pp. 441-453, 1909.

Eckel, E. C, and Emmons, S. F.

1. Contributions to economic geology, 1905, 1906. See Emmons, S. F., and Eckel, E. C.

Edgerton, Ward.

1. The new Portland mill, Victor, Colorado. Mg. Sci., vol. 62, p. 76, 1910.

Egleston, T.

1. Boston and Colorado smelting works. A. I. M. E., Trans.,

vol. 4, pp. 276-298, 1876.

2. Copper refining in the United States. A. T. M. E., Trans.,

vol. 9, pp. 678-730, 1880.

Eilers, A.

1. The Snake Kiver mines, Colorado. E. and M. J., vol. 14,

pp. 177-178, 1872.

2. The metallurgical value of the lignites of the far west.

A. I. M. E., Trans., vol. 1, pp. 216-225, 1872.

3. A new occurrence of the tellurides of gold and silver.

A. I. M. E., Trans., vol. 1, pp. 316-320, 1873.

Discusses the occurrence of petzite in the Red Cloufl mine, at Gold Hill, and gives assays of the ore.

88 Bibliography Op Colorado Geoloot

Eilers, A. — Contiimed.

4. Coke from lignites. A. I. M. E., Trans., vol. 2, pp. 101-102,

Describes coke from Trinidad and Canon City.

Ekeley, J. B.

1. The comi)osition of some Colorado tungsten ores. Colo.

Univ. Studies, vol. 6, no. 2, pp. 93-96, 1909 ; W. Chem. and Met., vol. 4, pp. 326-329, 1908. Abstract: Mg. World, vol. 30, p. 280, 1909.

2. Nature of some coal dusts and mine air from Colorado

mines. Jour. Indl. and Eng. Chem., vol. 3, p. 580,

Elder, H. J.

1. The Victor mine, Crii)ple Creek. E. and M. J., vol. 56, p. 193, Tllust., 1893.

Eldridge, George H.

1. Some suggestions upon the method of grouping the forma-

tions of the middle Cretaceous and the employment of an additional tei*m in its nomenclature. Am. Jour. Sci., 3rd ser., vol. 38, pp. 313-321, 1889. Abstract:

Am. Nat., vol. 24, p. 769, 1890.

Discusses the Benton, Niobrara, Pierre, and Fox Hills.

2. Some stratigraphic and structural features of the country

about Denver. Colo. Sci. Soc, Proc, vol. 3, pp. 86-118,

3. Notice of results of stratigraphic studies in the Denver

Basin. U. S. Geol. Surv., 8th Ann. Rept., pp. 144-145,

Given by S. F. Emmons in report of Rocky Mountain division of geology.

4. On certain peculiar stinictural features in the foot hill

region of the Rocky Mountains near Denver. Wash. Phil. Soc, Bull., vol. 11, pp. 247-274, map, 1890. Abstract: Am. Nat., vol. 24, p. 212, 1890.

5. The Florence oil fields. A. I. M. E., Trans., vol. 20, pp.

442-402, map, lllust, 1892. Abstract: E. and M. J.,

vol. 52, p. 422, 1891.

Discusses the topography, stratlgrapliy, structure, oil horizon, wells, and character, production, and treatment, and products of the oil.

Biblioobaphy Of Colorado Geology 89

George H. — Continued. 6. Asphalt and bituminous rock deposits of the United States. U. S. GeoL Surv., 22nd Ann. Kept, pt. 1, pp. 209452, must, 1901.

Eldridge, George H., Emmons, S. F., and Cross, Whitman.

1. Anthracite-Crested Butte folio.

2. Denver Basin monograph.

See Emmons, S. F., Cross, Whitman, and Eldridge, George F.

Elf tman, A. H.

1. The golden San Juan. Am. Mining Congress, Proc, 6th

Kept., pp. 152-154, 1904.

Gold, copper, and silver deposits described.

EUiott, E. T.

1. The age of cave-dwellers in America. Pop. Sci. Monthly,

vol. 15, pp. 488-491, 1879.

Discusses evidences found in Colorado.

EUiott, R. S.

1. Report on the industrial resources of western Kansas and eastern Colorado. Hayden Surv., 2nd Ann. Rept., pp. 442458, i872.

Elmore, C. J.

1.. A comparison of fossil diatoms from Nebraska with similar deposits at St. Joseph, Missouri, and at Den- ver, Colorado. Nebr. State Hist. Soc, Proc. and Coll.,

2nd ser., vol. 2, pp. 238-242, 1808.

list of fepecles identified from Tertiary deposits.

Emmons, Samuel Franklin.

1. Abstract of report of the Rocky Mountain division. U. S.

Geol. Surv., 1st Ann. Rept., pp. 16-23, 1880.

Includes notes on the geology of the Leadville district

2. Geology and mining industry of Leadville, Lake County.

U. S. Geol. Surv., 2nd Ann. Rept., pp. 201-290, Illust., 1892. Abstract: Am. Jour. Sci., vol. 24, pp. 64-67,

3. The Leadville porphyry. Science, vol. 1, p. 192, 1883.

(Review of paper by A. A. Julien, Am. Nat., 1882, "The so-called Leadville porphyry.")

4. Sketch of the geology of the Rocky Mountain district.

Colo. Sci. Soc, Proc, vol. 1, pp. 3-12, 1884.

90 Bibliography Of Colorado Qbology

ExnmoxiSy Samuel Franklin — Continued.

5. Tntroductory geological sketch of Buffalo Peaks, Mosquito

Range. U. S. Geol. Surv., Bull. 1, pp. 11-17, 1884. Abstract: Science, vol. 1, p. 490, 1883.

6. Ore deposition by replacement. Wash. Phil. Soc, Bull.,

vol. 6, pp. 32-33, 1884. Abstract: Science, vol. 1, p. 430, 1884.

7. Geological sketch of the Rocky Mountain division. lOtli

census of the U. S., vol. 13, statistics and tech- nology of the precious metals, pp. 60-104, 1885.

8. Report of the Rocky Mountain division. U. S. Geol. Surv.,

6th Ann. Rept., 18841885, pp. 6267, 1885.

9. Geology and mining industry of Leadville. U. S. Geol.

Surv., Mon. 12, 770 pp., Iliust., maps, 1886.

Includes: Appendix A: Petrography, by Whitman Cross. Appendix B: Chemistry, by W. F. Hillebrand. Appendix C: Metallurgy, by A. Guyard. Abstracts: U. S. Geol. Surv., 2d Ann. Rept, pp. 201-290.' 1882; Science, vol. 4, p. 66, 1884; Am. Jour. Sci., 3d ser., vol. 24, pp. 64-67; Science, vol. 11, pp. 18-19, 1889; Am. Geol., vol. — , pp. 194-195, 1888; Nature, vol. 39, pp. 484-485, 1889; Scottish Geog. Mag., vol. 5, pp. 198-202, 1889. Re- lief maps by E. S. Ward and E. E. Howell.

10. Notes on some Colorado ore deposits. Colo. Sci. Soc,

Proc, vol. 2, pt. 2, pp. 85-105, 1886.

11. The genesis of certain ore deposits. A. 1. M. E., Trans.,

vol. 15, pp. 125-147, 1887. Min. Ind., vol. 1, pp. 8-11,

cont., 1887.

A discussion of the author's theories of ore formation in the Leadville district, and notes on others' criticisms of his theories.

12. Structural relations of ore deposits. A. T. M. E., Trans.,

vol. 16, pp. 804-839, 1888.

13. On the origin of fissure veins. Colo. Sci. Soc, Proc, vol.

2, pp. 189-208, 1888.

14. On glaciers in the Rocky Mountains. Colo. Sci. Soc,

Proc, vol. 2, pp. 211-227, 1888.

15. Preliminary notes on Aspen, Colorado. Colo. Sci. Soc,

Proc, vol. 2, pp. 251-277, 1888.

15a. Report of Rocky Mountain division of geology. U. S. Geol. Surv., 8th Ann. Rept., pp. 144-146, 1889.

BIBLIOGRAPHY OF COLORADO GBOLOOT fl

Emmons, Samuel Franklin — Continued.

16. Report of the Rocky Mountain division. U. S. Qeol.

Surv., 10th Ann. Rept., pp. 137-140, 1890.,

Account of Silurian ( Ordovician ) fossils, from near Canon City.

17. Orographic movements in the Rocky Mountains. Qeol.

Soc. Am., Bull., vol. 1, pp. 245-2S6, 1890. Abstract: Am. Nat, vol. 24, pp. 211-212, 1890.

18. Colorado. Macfarlane's Geol. Rwy. Guide, 2nd edition,

pp. 289, 297-308, 1890.

19. Progress of the precious metal industry in the United

States since 1880. U. S. Qeol. Surv., Min. Res., pp.

46-94, 1892.

Gives a general review of the progress of the industry and a brief description of the principal ore deposits in the various states and territories, tables of production, and a forecast of future production.

20. Geological guide-book for an excursion to the Rocky

Mountains. Jno. Wiley & Sons, pp. 255-487, Illust., map, 1894.

Includes the following: Spanish Fork Canyon to Grand Junction, the Rocky Mountains of Colorado, Grand Junc- tion to Glenwood Springs, Glenwood Springs to Lead- ville, Leadville to Nathrop, Canon City to Manitou, the great plains of Colorado and Kansas, Denver to Kansas City, by S. F. Emmons; Canon City Silurian vertebrate life, C. D. Walcott; Manitou, Colorado Springs to Denver, Denver to Golden, Denver to Morrison, by Whitman Cross. From the Int. Cong. Geol., Comte Rendu, 5th session, 1893.

21. Geological distribution of the useful metals in the United

States. A. I. M. E., Trans., vol. 22, pp. 53-95, and

737-738, 1894.

Describes the geologic occurrence in different parts of Colorado of copper, iron, and manganiferous iron ores.

22. The genesis of ore deposits. A. I. M. E., Trans., vol. 23,

pp. 597-602, 1894.

Discussion of paper by F. Posepny on the same subject.

23. The mines of Custer County, Colorado. U. S. Qeol. Surv.,

17th Ann. Rept., pt. 2, pp. 411-472, Illust., 1896.

Discusses the character and mode of occurrence of the gold- and silver-bearing ores, and discusses their origin. Includes analyses of sinters and waters from 500 and 2,000-foot levels of the Geyser mine. (See Whitman CroBB.)

92 Bibliogbapht Of Colorado Geology

Emmons, Samuel Franklin — Continued,

24. Some mines of Rosita and Silver CliflP, Colorado. Trans.

. A. I. M. E., vol. 26, pp. 773-823, 1896.

Describes the geologic history of the region, and the occurrence and character of the ore bodies in the prin- cipal mines. Discusses their origin. Gives chemical analyses of waters from deep levels in the Geyser mine, and a discussion of the results.

25. The geology of government explorations. Science, new

ser., vol. 5, pp. 1-15, 42-51, 1897. Qeol. Soc. of Wash., Presiential Address, 39 pp., 1897.

26. The origin of 'Green River. Science, new ser., vol. 6, pp.

19-21, 1897.

27. Tenmile district special folio. U. S. Geol. ., Qeol.

Atlas of the U. S., folio, no. 48, 1898.

Describes the geographic features, occurrence, and character of the Archean, Cambrian, Silurian, and Car- boniferous strata, recent deposits, diorlte-porphyries, and rhyolites of the region. Discusses the structural rela- tions and orographic disturbances, and describes the geographic and geologic distribution, character, and occurrence of the silver ore bodies. Accompanied by topographic and geologic maps and structural sections.

28. Review of century of geography in the Ignited States.

Science, new ser., vol. 7, p. 677, 1898.

29. The secondary enrichment of ore deposits. A. I. M. E.,

Trans., vol. 30, pp. 177-217, 1901.

30. Copper in the Red Beds of the Colorado-Plateau and

elsewhere. Mg. Rep., vol. 52, pp. 136-137, 1905; Min. Mag., vol. 12, p. 319, 1906.

31. A map and cross-sections of the Downtown district of

Leadville. Abstract: Science, new ser., vol. 23, pp. 816-817, 1906.

32. Uinta Mountains. Geol. Soc. Am., Bull., vol. 18, pp.

287-302, 1907-8.

Emmons, Samuel Franklin, and Becker, G. F.

1. Deep mines. 10th Census of the U. S., vol. 13, pt. 13,

Precious metals, pp. 105-177, 1885.

Includes a number of Colorado mines in the tables, which give: position and altitude of mining districts; ownership, organization, and value; development, nature, and extent; machinery and its manipulation; labor and wages; supplies, their consumption and cost; accidents, their causes and results.

Biblioobapht Of Colorado Qbology 93

Emmons, Samuel Franklin, and Becker, G. F. — Continued.

2. Placer mines and mining ditches. 10th Census of the

U. S., vol. 13, pt. 13, Precious metals, pp. 178-241,

A number of Colorado placers are included. Tho report discusses the geology, investment, and ownership, technical methods employed, and accidents in placer mines.

3. licad smelting at Leadville, Colorado. 10th Census of

the U. S., vol. 13, pt. 13, Precious Metals, pp. 280-20:..

must., 1885.

Describes the plant, raw material, general smelting operations, furnace products, cost of labor, and material.

Emmons, Samuel Franklin, Cross, W., and Eldridge, 0. H.

1. Anthracite-Crested Hutte folio. Description of Elk Mts.

U. R. Geol. Surv.. Geol. Atlas of U. S., folio 0, IS'M. Gives an historical sketch of the geology of the region and describes the clays, iron ore and precious metal deposits. Includes topographic, colored geologic, eco- nomic, and structure section maps of each of the dis- tricts and a sheet showing stratlgraphic column.

2. Geology of the Denver Basin, Colorado. T. S. (lool.

Surv., Mon. 27, 556 pp., maps, Illust., 1896.

General geology — physiography, historical geology, structural geology. Mesozoic geology — the formations, and structure. Post-Laramie and Tertiary geology — Arapa- hoe, Denver, and Monument Creek formations. Pleisto- cene geology. Igneous formations. Economic geology — coal, clays, building stones, artesian wells. Paleontology — fossil plants, Knowlton, vertebrate fossils. Marsh.

Enoonons, Samuel Franklin, and Eckel, E. C.

1. Contributions to economic geology, 1905. V. S. Geol.

Surv., Bull. 285, 506 pp., Illust., 1906.

2. Contributions to economic geology, 1906. U. S. Geol.

Surv., Bull. 315, 505 pp., Illust., 1907.

Emmons, Samuel Franklin, and Hague, Arnold.

1. Descriptive geology. Fortieth Parallel Area. See Hague, Arnold, and Emmons, Samuel Franklin.

ElnmionSy Samuel Franklin, and Hayes, C. W.

1. Contributions to economic geology, 1902. V. S. iJeol. Sun'., Bull. 213, 449 pp., 1903.

Afiphalt, roal, copper, and potroleum deposits discussed.

M Bibliography Of Colorado Gbology

Emmons, Samuel Franklin, and Hayes, C. W. — Continued.

2. Contributions to economic geology, 1903. U. S. Qeol.

Supv., Bull. 226, 527 pp., Illust., 1904.

Includes papers by various members of the U. S. Geo- logical Survey staff on various economic products, with bibliography of each.

3. Contributions to economic geology, 1904. U. S. Oeol.

Supv., Bull. 260, 620 pp., Illust, 1905.

Emmons, Samuel PYankJin, and Irving, John Duer.

1. The Downtown district of Leadville, Colorado. U. S.

Geol. Surv., Bull., 320, 75 pp., Illust., 1907. Abstract :

Science, new ser., vol. 23, pp. 816-817, 1906; Mg. and

Sci. Press, vol. 95, pp. 401-405, 1907.

Describes the geologic structure of the district and the distribution, relations, and origin of the ores.

Emmons, William H.

1. The Neglected mine and nearby properties, Durango

quadrangle. U. S. Geol. Surv., Bull. 260, pp. 121-127,

1905. Abstract: Mg. Kept., vol. 54, pp. 263-264, 1906.

Describes the general geolog>', the character of the ores containing gold and silver, and the mining opera tions.

2. Oro deposits of Bear Creek, near Silverton. U. S. Geol.

Surv., Bull. 285, pp. 25-27, 1906.

Describes briefly the general geology and the occur- rence and character of the gold and silver telluride ores

3. The Cashin mine, Montrose County. TJ. S. Geol. Surv.,

Bull. 285, pp. 125-128, 1906. Abstract: Mg. Kept.,

vol. 54, pp. 263-264, 1906.

Describes the geology of the vicinity of the mine and the character and origin of the copper ore.

4. Influence of manganese in secondary gold enrichment.

A. I. M. E., Bull., vol. 46, pp. 768-837, 1910. Ah

stracts: Mg. Sci., vol. 62, pp. 413-415, 441443, 1910;

Mg. World, vol. 33, pp. 1233-1236, 1910.

Liberation of free chlorine in surface waters and the retention of gold in solution through oxidation of ferrous salts, thus preventing precipitation. Examples in vari- ous western mining districts to illustrate the application of the hypothesis: Montana, Colorado, Nevada, and Cali- fornia. Colorado districts: Leadville and San Juan.

Bibliography Of Colorado Qbology 95

Emmoiui, William H., Cross, Whitman, Howe, Ernest, and Irving, J. D.

1. Needle Mountains quadrangle. Bee Cross, Whitman, Howe, Ernest, Irving, J. D., and Emmons, Wil- liam H.

Emmons, W. H., and Larsen, E. S.

1. A preliminary report on the geology and ore deposits of Creede, Colorado. U. S. Geol. Surv., Bull. 530, pp. 42-65, Illust, 1913. Abstract: Mg. Sci., vol. 66, p]). 170-171, 1912.

Emrich, Clarence T.

1. Mastodon bones (from Golden, Colorado). Colo. Sch. of Mines, Bull., vol. 5, no. 1, pp. 36-37, Illust., 1909.

EndUch, F. M.

1. Report of the San Luis division. Hayden 8urv., 7th Ann.

Kept., 1873, pp. 275-361, maps, Illust., 1874.

Preliminary report upon the mining districts of Colo- rado. Formation of veins and lodee. Mines noted by the South Park division of the U. S. Geol. Surv., 1873, by A- C. Peale. Tarryall Creek, Silver Heels Mountain. Fairplay, Oro City, Homestake lode. etc. Arkansas Val- ley. Elk Mountain district. Report upon the geology of the San Luis district Appendix: Mineralogical notes and a catalogue of the minerals of Colorado Territory. Discusses structural, stratigraphic, and economic geol- ogy, ores, and briefly, treatment of ores.

2. Report on the mines and geology of the San Juan country.

Hayden Surv., Bull., vol. I, no. 3, 2nd ser., pp. 151- 164, 1875. Abstract: Am. Jour. Sri., 3rd ser., vol. 10, p. 58, 1875.

3. Report as geologist of San Juan division. Hayden Surv.,

8th Ann. Rept., pp. 181-240, Illust, 1876. .

Metamorphic area. Volcanic area. Sedimentary area. Silurian, Devonian, Carboniferous, Cretaceous. Mines: Occurrence of lodes, Highland Mary, The Robert Bruce, The Comstock lode, The Yreteva, Green Mountain lode. The Pride of the West, The Little Giant, Excelsior lode, The Prospector, The Pelican lode, Big Casino, Ouray. Discusses the origin of the metamorphic ro6ks, notes the occurrence of fossils in the sedimentaries, and gives his inferences as to the age of the ore deposits.

4. Report of F. M. Endlich, Geologist of the southeastern

division. Hayden Surv., Ann. Rept., pp. 103-235,

96 Bibliography Of Colorado Geology

Endlich, F. M. — Continued.

maps, Illust, 1877. Abstract : Am. Jour. Sci., 3rd ser..

vol. 14, p. 421, 1876.

Sangre de Cristo Range and the Huerfano region. San Luis Valley. The Saguache Range. The San Juan region. Post-Cretaceous beds of the Trinidad region. Appendix A. Ancient glaciers in southern Colorado. Appendix B. Catalogue of the minerals of Colorado. Analyses of coals and mineral waters.

5. Report of the geology of the White River district. Haydeu

Surv., 10th Ann. Rept., 1876, pp. 61-131, Illust., 1878.

Abstract: Am. Nat., vol. 11, pp. 81-82; Am. Jour.

Sci 3rd ser., vol. 13, pp. 71-72, 1877.

Drainage, topography, vegetation. General geology-: stratigraphy, Jura-Trias, Cretaceous, Tertiary, Ancient glaciers, ancient lalces, drift. Correlations of stratig- raphy, lithology of strata, and orography. Crystalline aggregates, sedimentary rocks eruptive roclis, drift. Prozoic, metamorphics, Silurian, Devonian, Carbonifer- ous, Trias, Jura, Cretaceous, Post-Cretaceous, Tertiary, volcanic formations, metamorphosed rocks, monuments, glaciation, drift, soil, metalliferous deposits, gold, silver, copper, zinc, lead, coal, and iron.

G. Mineralogical report of F. M. Endlich. Hayden Hurv.,

10th Ann. Rept., 1876, pp. 133-159, 1878.

Catalogue of minerals found in Colorado. Systematic arrangement of Colorado minerals. Reference to publi- cations on minerals of Colorado. The catalogue includes a number of analyses of coal and minerals.

7. On the erupted rocks of Colorado. Hayden Surv., 10th

Ann. Rept., 1876, pp. 197-272, 1878.

Classification: Occurrence of volcanic rocks on the North American continent. Occurrence of erupted rocks in Colorado, and classification of same. Plutonic erup- tives, basic and acidic. Volcanic eruptives: Trachor- heites, andesite, trachyte, rhyollte, porphyritic trachyte. of porphyritic trachyte: location, i)hysical appearance, structure, relations to sedimentary forma- tions, influence upon sedimentary strata, correlation witli other eruptives, age. Basic volcanic eruptives, dolerito and basalt. Age, comparison, and origin of eruptives.

8. On some striking products of erosion in Colorado. Hay-

den Surv., Bull., vol. 4, no. 4, pp. 831-8G4, 1878.

Discusses the relation of structure and composition to erosion, and describes monuments, statuesque, mural, and architectural forms, caves, arches, and isolated forms.

Bibliography Ov Coix)Rai>0 Geology 97

KndHch, F. M. — Continued.

9. The origin of the gold deposits near Ouray. E. and M. J., vol. 48, p. 335, 1889.

Bndlich, F. M., Marvine, A. R., Peale> A. C, and White, C. A. 1. Map of northwestern Colorado. See Marvine, A. R., Peale, A. C, White, C. A., and Endlieh, P. M.

Engelmann, H.

1. Report of a geological exploration from Fort Leaven-

worth to Bryans Pass, made in connection with the survey for a road from Fort Riley to Bridgers Pass under Bryan. Rept. Sec. War for 1857, vol. 2, 35th Congress, 1st sess. House Ex. Doc. no. 11, pt. 2, pp. 489-517, 1857.

2. The brown coals of Utah and adjoining Territories. A. I.

M. E., Trans., vol. 4, pp. 298-308, 1876, Contains notes on coals of Trinidad.

Engineering and Mining Journal.

1. The bullion product of Colorado in 1872. E. and M. J.,

vol. 15, p. 266, 1873.

Production of gold and silver by counties.

2. Mineral production of Colorado for 1876. E. and. M. J.,

vol. 23, p. 137, cont., 1877.

Production of gold and silver by counties.

3. Rob Roy coal mine. E. and M. J., vol. 23, p. 396, Illust.,

4. Placer mining in Colorado. E. and M. J., vol. 23, pp.

432-433, 1877.

5. The Caribou silver mines. E. and M. J., vol. 24, p. 105,

Also Belcher and Poorman in Boulder County: Exten- tion Lode, Spencer, Grand County; Monitor, Lulu, and Two-seventeen.

6. The Fuller placer mines. E. and M. J., vol. 24, 454,

Swan River, Mayo Gulch, Humbug Gulch.

7. The Little Annie mine, Summit, Rio Grande County. E.

and M. J., vol. 25, ])]k 57, 77, 1878.

8. Colorado coal fields. E. and M. J., vol. 35, p. 18, 1883.

9. Possible economies in mining in the San Juan country.

E. and M. J., vol. 36, j). 394, 1884.

10. Colorado production of minerals, 1885. E. and M. J.,

vol. 41, pp. 96-97, 1886.

Production of Leadville, 1877-1885.

(4)

98 Bibliography Op Colorado Geology

Engineering and Mining Journal — Continued.

11. Sheep Mountain mines, Gunnison County. E. and M. J.,

vol. 42, p. 149, 1886.

12. Production of smelters, 1887. E. and M. J., vol. 45, pp.

23, 42, 1888.

13. A hand drilling contest record. E. and M. J., vol. 46, p.

175, 1888.

14. The Sylvanite mine, Gunnison County. E. and M. J.,

vol. 46, pp. 499-500, II lust., 1888.

15. Salida. E. and M. J., vol. 48, pp. 545-546, Illust., 1889.

16. The mines of Leadville. E. and M. J., voL 51, p. 280,

17. The mines of Marshall basin, San Miguel County. E. and

M. J., vol. 51, p. 717, 1891.

18. The ore deposits of Leadville. E. and M. J., vol. 52, p.

209, 1891.

19. The mines of Battle Mountain, Eagle County. E. and

M. J., vol. 53, p. 545, 1892.

20. The mines of Cripple Creek. E. and M. J., vol. 53, p.

567, 1892.

21. The Leadville district, Colorado, in 1894. E. and M. J.,

vol. 58, p. 604, 1894.

22. The Sopris coal washing plant, Colorado. *E. and M. J.,

vol. 62, pp. 391-392, 1896.

23. Cripple Creek in 1896. E. and M. J., vol. 63, p. 8, 1897.

24. Leadville district in 1896. E. and M. J., vol. 63, pp. 8-9,

25. Mining in Gilpin County in 1896. E. and M. J., vol. 63,

p. 65, 1897.

26. Cost of mining coal in Colorado. E. and M. J., vol. 64,

p. 369, 1897.

27. Uranium ore in Colorado. E. and M. J., vol. 64, p. 456,

28. Cripple Creek mines in 1897. E. and M. J., vol. 65, p. 40,

29. Mining in Lake County in 1897. E. and M. J., vol. 65,

pp. 103-105, 1898.

30. The coal mines of Colorado. E. and M. J., vol. 67, p. 347,

Abstract of biennial report of State Commissioner of Mines, 1897-8.

Biblioobapht Of Colorado Geology 90

Engineering and BDning Journal — Continued.

31. The Leadville district in 1901. E. and M. J., vol. 72, p.

34, 1901.

32. The Keystone hydraulic mine in Colorado, San Miguel

County. E. and M. J., vol. 72, p. 424, lllust, 1901.

33. The Cripple Creek district during 1901. E. and M. J.,

vol. 73, pp. 70, 71, 1902.

Description of mines, mills, and summary of produc- tion of Cripple Creek district

34. Gilpin County mines in 1901. E. and M. J., vol. 73, pp.

134-135, 1902.

35. The Boulder oil fields. E. and M. J., vol. 73, pp. 445-446,

and 659, 1902.

Discussion of relation of Valmont and other dikes to the oil formation.

36. Expense of mining and milling gold ore in the San Juan

district. E. and M. J., vol. 73, p. 696, 1902.

37. The coal fields of Routt County, E. and M. J., vol. 74,

pp. 579-581, lllust, 1902.

Description of the coal deposits of Routt County; Oak Creek, Bear River, Williams RJver Mountains, and Pilot Mountains districts. Analyses of coals.

38. Metal production of Colorado. E. and M. J., vol. 77, p.

434, 1904.

Production of gold, silver, copper, lead, and zinc by counties, 1903.

39. Ore deposits. E. and M. J., vol. 79, p. 335, 1905.

Description of Golden Age, Jamestown, and Caribou ore deposits.

40. The mines of the Colorado Fuel and Iron Company. E.

and M. J., vol. 83, pp. 132-135, 1907.

41. Summary of mining laws of Colorado. E. and M. J., vol.

86, pp. 10881090, 1908.

42. The true story of the Camp Bird discovery. E. and M. J.,

vol. 89, p. 1266, 1910.

43. The Ajax mill, Victor. E. and M. J., vol. 92, pp. 1077

1078, 1911.

44. Vanadium from Greenhorn Mountains near Pueblo. E.

and M. J., vol. 92, p. 1246, 1911.

News item, giving figures of production.

45. The tungsten industry, 1911. E. and M. J., vol. 93, p. 39,

46. Vanadium in 1911. E. and M. J., vol. 93, p. 40, 1912.

100 Bibuography Of Colorado Cubolooy

Engineering and Mining Journal— Continued.

47. Vanadium in Colorado. E. and M. J., vol. 94, p. 341,

Parish, John B.

1. Interesting vein phenomena in Boulder County. A. I. M.

E., Trans., vol. 19, pp. 547-552, 1891.

Describes the occurrence of gold and silver in the Golden Age and Sentinel mines near Jamestown.

2. A Boulder County mine. Colo. Sci. Soc, proc, vol. 3, pp.

316322, must, 1891.

Describes a porphyry dike and ore deposits at James- town.

3. The ore deposits of Newman Hill, Rico, Colorado. Colo.

Sci. Soc., Proc, vol. 4, pp. 151-164, 1892. Mg. and

Sci. Rev., vol. 28, no. 26, p. 4; vol. 29, no. 1, pp. 4-5,

and no. 2, pp. 4-5, 1892.

Describes the geologic features of the locality and the structural and mineralogic characteristics of the ore bodies.

Farrington, 0. C, and Tillotson, E. W., Jr.

1. Notes on various minerals in the museum collection.

Field Columbian Mus., Geol. ser., vol. 3, no. 7, pp. 131-

163, Illust, 1908.

Description of calamine crystal from Leadville.

Fay, Albert H.

1. The mineral industry, its statistics, technology, and trade

of the United States and other countries for the year

1909. Min. Ind., vol. 19, 1910.

Summary of production of cement, coal, coke, copper, fluorspar, gold, iron ore, lead, petroleum, silver, tung- sten, vanadium, and zinc. Special articles on: coal, by James Dalrymple; dredging, by T. J. Dalzell; gold min- ing, by Geo, E. Collins; tungsten, by R. D. George; zinc deposits of Leadville, by T. J. Dalzell.

Fellows, A. L.

1. Water resources of the State of Colorado. U. S. Geo!.

Sur\'., W. S. Paper 74, lul pp., Illust., 1902.

Stream measurements of the South Platte, Bear, Clear Creek, St. Vraln, Boulder, South Boulder, Big Thompson. Cache la Poudre, Arkansas, Lake Fork. Purgatory, Rio Grande, Snn Juan. Piedra, Los Pinos, Florida. Animas, Mancos. Grand, Gunnison. Uncompahgre, Dolores, San Miguel, Green, White, Williams, Yam pa, and Elk rivers, with a bibliography of Colorado hydrology.

Bibliography Op Colorado Gboloot 101

Fellows, A. L. — Continued.

2. Investigations in Colorado. U. S. Reclamation Service.

2nd Ann. Kept., pp. 162-250, 1904.

Discussion of work done on South Platte. White River in northwestern Colorado, and on the Grand River.

3. Reclamation operations in Colorado. U. S. Reclamation

Service, 3rd Ann. Rept., 1905.

Discussion of work done in Uncompahgre Valley, Grand River, White River, Colorado River storage, including the Kremmling reservoir site, Grand Lake, and Yampa reservoir.

Feiineman, N. M.

1. The Arapahoe glacier in 1902. Jour. Geol., vol. 10, pp.

839-851, must, 1902.

Describes the moraines and crevasses of this glacier.

2. The Boulder oil field. U. S. Geol. Surv., Bull. 213, ]ip.

322332, 1903.

Describes location, general geologic structure, and development of the field, the character and occurrence of the oil-bearing strata, and the production of oil.

3. Structure of the Boulder oil field, with records for the year

1903. U. S. Geol. Surv., Bull. 225, pp. 383-391, Illust.,

Describes the location and geologic structure of the field, and the occurrence and production of petroleum.

4. The Florence oil field. U. S. Geol. Surv., Bull. 260, pp.

436440, 1905.

Describes the location and structure of the field, the occurrence of the oil, and the economic developments.

5. Geology of the Boulder district. U. S. Geol. Surv., Bull.

265, 101 pp., maps, Illust., 1905.

Describes the physiography, the character, occurrence, and relations of Algonklan, Triassic (?), Jurassic, and Cretaceous sedimentary rocks, and of intrusive rocks; the geologic history of the area, and the economic geol- ogy, particularly the occurrence of oil and gas.

6. Effect of cliff erosion on form of contact surfaces. Geol.

Soc. Am., Bull., vol. 16, pp. 205-214, Illust., 1905.

Discusses the relations of shore erosion and sub- sidence, and the application to the contact of the Archean granite and Wyoming sandstone in the Front Range of the Rocky Mountains in northern Colorado.

102 '.Bibliography Of Colorado Geology

Fexmeman, N. M., and Oale, H. S.

1. The Yampa coal field, Routt Countv. (Preliminary re- port.) U. S. Geol. Surv., Bull. 285, pp. 226-239, map, 1906.

Describes the geologic structure, the occurrence, char- acter, and relations of the Archean, Cretaceous, and Tertiary deposits, the character of the coal fields, and the occurrence, thickness, and character of the coal seams.

2. The Yampa coal field, Routt County. U. S. Geol. Surv.,

Bull. 297, 81 pp., Illust., 1906. Abstract : Mg. Rept.,

vol. 54, pp. 251-252, 1906.

Describes the geologic structure, the occurrence, char- acter, the relations to the Archean, Cretaceous, and Ter- tiary deposits, the character of the coal field, and the occurrence, thickness, and character of the coal seams; with a chapter on the character and use of the Yampa coals by M. R. Campbell.

Fenner, Clarence N.

1. A replacement of rhyolite porphyry by stephanite and chalcopyrite at Leadville. Columbia Sch. Mines, Quart., vol. 31, pp. 235-240, Illust., 1910.

Femald, Robert Heywood.

1. The present status of the producer gas power plant in

the United States. U. S. Geol. Surv., Bull. 316, pp.

429-459, 1907. U. S. Geol. Surv., Prof. Paper 48, pt.

I, 1907.

One sub-bituminous coal from Lafayette tested.

2. Recent development of the producer-gas power plant in

the U. S. U. S. Geol. Surv., Bull. 416, 82 pp., map,

Illust, 1909.

Analyses of Lafayette coals and list of producer gas power installations at Denver, Greeley, Rocky Ford. Silver CliflP, and Twin Lakes.

Pinch, J. W.

1. The heart of the San Juan. Mg. Investor, vol. 35, pp.

226-229, Illust., 1904.

2. Cripple Creek district. Mg. Mag., vol. 11, pp. 414-423,

3. State geological survey for Colorado. Mg. Rept., vol. 51,

pp. 217-218, 1905.*

Bibliography Of Colorado Geology 103

Finch, J. W. — Continued.

4. Circulation of underground aqueous solutions and the depositiofa of lode ores. Proc. Colo. Sci. Soc, vol. 7, pp. 193-252, 1903.

Finlay, George I.

1. Colorado Springs : A guide book describing the rock for-

mations in the vicinity of Colorado Springs. 61 pp., map, Illust., Colorado Springs, The Out West Com- pany, 1906.

2. On an occurrence of corundum and dumortierite in peg-

matite in Colorado, (near Canon City) Jour. Qeol., vol. 15, pp. 479-484, 1907.

3. The Gleneyrie formation and its bearing on the age of

the Fountain formation in the Manitou region, Colo- rado. Jour. Geol., vol. 15, pp. 586-589, 1907.

J'inlay, J. R. '

1. Cost of mining at Cripple Creek. E. and M. J., vol 76,

pp. 766-767, 1903.

2. Leasing at Cripple Creek. The Economies of Mining,

compiled by T. A. Rickard, published by the E. and M. J., New York.

3. Mining costs at Cripple Creek. The Economies of Min-

ing. See no. 2.

Fischer, Emil.

1. Map of Red Mountain and the mining region of the San Juan, Ouray, San Miguel and Dolores counties. 30 X 321/2 inches, St. Louis, A. Gust, 1886.

Fisher, Cassius A.

1. Description of the Nepesta quadrangle. U. S. Geol. Surv.,

Geol. Atlas of U. S., folio 135. maps, Illust., 1906.

Describes the topography and drainage, the occurrence, character, and relations of the Cretaceous, Tertiary, and Quaternary formations; the geologic history; the soils; water, and mineral resources.

Fisher, Cassius A., and Ashley, Geo. H.

1. The valuation of public coal lands. See Ashley, Geo. H., and Fisher, Cassius A.

Fischer, Siegfr.

1. The concentration of carnotite ores, and some similar ores. Met. and Chem. Eng., vol. 10, p. 366, 1912.

104 Bibliography Of Colorado Obology

r, Siegfr. — Continued. 2. Extraction of vanadium from carnotite and vanadiferous sandstone concentrates. Met. and Chem. Eng., vol. 10, p. 469, 1912. Abstract: Mg. and Eng. World, vol. 37, pp. 577-578, 1912.

Flecky Herman.

1. Alkali lakes of San Juan Valley. W. Assoc. Tech.

Chem. and Met., vol. 1 ; pp. 2-4, 1905 ; Mg. Kept, vol. 50, pp. 639-640. 1904; Mg. Mag., vol. 11; p. 371, 1905.

2. A brief statement of tJie rising importance of the rare

elements. Am. Mg. Congress, Proc., 11th Sess., pp. 204-211, 1908.

3. Uranium and vanadium deposits of Colorado. Mg. World,

vol. 30, pp. 596-598, Illust., 1900. (Map of xlaims located in Placerville district.)

Vanadium deposits of Placerville, Ss Miguel County described, with analysis of ores and description of mill' ing processes. Also vanadium deposits of Garos, Park County, and uranium in Gilpin* County, with analysis of ore from the Wood mine.

4. Welfare of Colorado's rare metal industry. Colo. Sch.

of Mines, Bull., vol. 4, no. 4, pp. 234-242, 1909. Ab- stract: Mines and Minerals, vol. 30, pp. 63-64, 1909. Includes notes on tungsten, uranium, and vanadium.

Fleck, Herman, and Haldane, William 6.

1. A study of the uranium and vanadium belts of southern

Colorado. Colo. State Bureau of Mines, Rept. for

1005-1906, pp. 47-117, Illust.. 1907.

Account of investigation of Mclntires Canyon. Roc- Creek, Hydraulic, and Vixen districts, history of the early discovery, and mining in San Miguel and Montrose counties.

2. Radioactivity of carnotite of south western Colorado. Mg.

Sci., vol. 60, pp. 512-514. 11)00; Mp:. World, vol. 31, pp. 1121-1124, 1909.

FoUansbee, R., Meeker, R. I., and Stewart, J. E.

I. Sui-face water supply of the Missouri river drainage.

IT. S. Geol. Surv., W. S. Paper 208, pp. 149-159, 1907.

Stream measurements on South Platte River. 1906.

Pord, W. E.

1. Rickardite, a new mineral. Anier. Jour. Sci., 4th ser., vol. 15, pp. 69-70, 1903; Sci. Am. Suppl., vol. 55, pp.

Bibliogbaphy Of Colorado Geology 106

22777-22778. 1903; Chem. News, vol. 87, pp. 66-57,

Describes occurrence and chemical composition.

2. The telluride of copper. E. and M. J., vol. 75, p. 113,

From Good Hope mine, Vulcan.

Ford, W. E., and Penfleld, S. L.

On Calaverite. (See Penfleld, S. L., and Ford, W. E.)

Forsyth, Alex.

1. The head frames of shafts at Cripple Creek. E. and M. J., vol. 75, pp. 366-370, Illust, 1903.

Foflsett, Frank.

1. Colorado : an historical, descriptive and statistical work

on the Rocky Mountain gold and silver mining region.

Denver Daily Tribune Printing House. 1876.

Contains chapters on geographical features, descrip- tion, mining, cost of mining and milling, how precious metals are extracted, various indivldttal counties, smelt- ing works, yield of mines, etc.

2. Colorado's bullion product for 1877. E. and M. J., vol.

25, p. 411, 1878.

Production by counties, 1872-1877.

3. Colorado's production of precious metals, 1879. E. and

M, J., vol. 29, pp. 23-24, 1880.

Foster, E. LeNeve.

1. Report of State Geologist, 1883-4.

Report of resources of the state in precious minerals: gold, silver, lead, zinc, copper, iron; in, coal; building stone, with analyses of granite, lava, dolomite, marble, and sandstone; an account of underground waters, with analyses from wells near Denver; an account of mines In Boulder, Clear Creek, Chaffee, Custer, Dolores, Eagle. Fremont, Garfield, Gilpin, Grand, Gunnison, Hinsdale. Lake, La Plata. Ouray, Park, Pitkin, Rio Grande, Routt. Saguache. San Juan. San Miguel, and Summit counties.

2. The Colorado Central lode, a paradox of the mining law.

Colo. Sci. Soc., Proc, vol. 7, pp. 41-53, Illust., 1902. Includes some discussion of the occurrence of ores.

Foster, J. W.

I. The mountains of Colorado. Am. Nat., vol. 6, pp. 65-75. 1872. (Read before Chicago Acad. Sci.. Nov. 1871.)

106 Bibliography Of Colorado Geology

Foster, William.

1. Colorado, California, Montana, Utah, etc. (Building stones.) 10th Census of the TJ. S., vol. 10, pp. 277- 279, 1884.

Frazer, Persif or, Jr.

1. Mines and minerals of Colorado. Hayden Surv., 3rd

Ann. Kept, pp. 201-228, 1873.

Notes the occurrence of various minerals in Colorado, gives analyses of mineral waters, and briefly describes methods of mining and treatment of ores.

2. The Whopper lode, Gunnison county. A. I, M. E., Trans..,

vol. 9, pp. 249-258, 1881.

Discussion of Whopper, Teller, and Index lodes.

Frecheville, R. J.

1. Report on the Camp Bird Mine. Mg. Investor, vol. 35, p. 239, Illust, 1904.

Freeland, Francis T.

1. The sulphide deposit of South Iron Hill, Ieadville. A. I.

M. E., Trans., vol. 14, pp. 181-189, 1886.

Discusses the structural geology, ore deposits, and gives analyses of the ores.

Freeman, Henry C.

1. The La Plata Mountains. A. I. M. E., Trans., vol. 13,

pp. 681-684, 1885.

General geology, coal and ore deposits.

Freeman, W. B., and Bolster, R. H.

1. Surface water supply of the Colorado River basin, 1907-8.

U. S. Geol. Surv., W. S. Paper 249, 206 pp. Illust.,

Description of Grand River drainage basin, with stream measurements of Grand, Eraser, Williams Fork, Blue, Roaring Fork, Frying Pan, Crystal, Gunnison, and Uncompahgre.

2. Surface water supply of the Lower Mississippi Basin,

1909. U. S. Geol. Surv., W. S. Paper 267, 99 pp.,

Illust., 1911.

Description of the Arkansas River basin and stream measurements, Grape Creek and De Weese Lye ditch near Canon City, Purgatory River, for 1909.

Bibliography Of Colorado Geology 107

Freeman, W. B., and Bolster, B. H. — Continued.

3. Surface water supply of the Western Gulf of Mexico,

1909. U. S. Geol. Surv., W. S. Paper 268, 107 pp.,

Description of the Rio Grande River basin with stream measurements; also Conejos River.

4. Surface water supply on the Colorado River basin, 1909.

U. S. Geol. Surv., W. S. Paper, 269, 247 pp. Illust.,

Stream measurements for 1909 of Grand River drain- age, Frazer, Williams Fork, Blue, Eagle, Roaring Fork, Frying Pan, Crystal, Uncompahgre, and Gunnison rivers.

Freeman, W. B., and Mathers, J. G.

1. Surface water supply of the Lower Mississippi Basin,

1910. U. S. Geol. Surv., W. S. Paper 287, 91 pp., 1911. Gives stream measurements on the Arkansas River,

Clear Creek, Cottonwood Creek, Chalk Creek, Oil or Fourmile Creek near Canon City, Purgatory, Big Sandy, and Big Spring.

2. Surface water supply of the West Gulf of Mexico, 1910.

U. S. Geol. Surv., W. S. Paper, 288, 149 pp. 1911.

Gives results of stream measurements on the Rio Grande, Clear Creek, Conejos, San Luis Creek, and Cule- bra River.

Frenzel, A. B.

1. The growth of the rare mineral industry. Mg. Sci., vol. 65, p. 73-74, 1912.

Fuller, M. L.

1. Bibliographic review and index of papers relating to underground waters, published by the United States Geological Survey, 1879-1904. U. S. Geol. Surv., W. S. Paper 120, 128 pp., 1905.

Fuller, M. L., Clapp, F. G., and Johnson, B. L.

1. Bibliographic review and index of underground water literature published in 1905. U. S. Geol. Surv., W. S. Paper 163, 130 pp., 1906.

Fuller, M. L., Lines, E. T., and Veatch, A. C.

1. Record of deep well drilling for 1904. U. S. Geol. Surv., Bull. 264, 106 pp., 1905.

summary of well drilling on pp. 44-45 in Colorado, and record of one well at La Junta.

108 Bibliography Of Colorado Geology

Pulton, C. H.

1. Cyanidation process reviewed by years, 1902-1907. Min.

Ind., vol. 11, pp. 306-308; vol. 12, pp. 171-182; vol.

13, pp. 213-224; vol. 14, p. 281; vol. 15, pp. 410-425;

vol. 16, p. 525, 1903-1908.

Vol. 15 contains a description of the Moore filters of the Liberty Bell mine. Vol. 16 includes a description of the Gold Cycle mill at Colorado City, of Cripple Creek, and of the Portland mine.

2. Cyanidation in the United States. E. and M. J., vol.

79, pp. 28-30, 1905.

Cyanidation of Cripple Creek ores described.

Fulton, Henry, and Palmer, C. S.

1. The quartz-porphyry of Flagstaff hill, Boulder, Colorado. See Palmer, C. S., and Fulton, Henr>\

Funnan, H. van F.

1. Treatment of low-grade gold ores of Colorado. Colo.

State Sch. of Mines, Biennial Kept., 1896, pp. 19-32.

2. Laboratory tests in connection with the extraction of

gold from ores by the cyanide process. Mg. Ind. and Rev., vol. 18, pp. 210-219, 1896.

3. Progress and present status of methods of ore reduction

in Colorado. Mg. Ind. and Rev., vol. 18, pp. 320-321,

4. Refractory materials. Colo. Sch. of Mines, Bull., vol. 1,

pp. 174-193, 1901.

Includes analyses of clays from Golden and Pueblo.

Gale, Iloyt S.

1. The Hahns Peak gold field, Colorado. U. S. Geol. Surv.,

Bull. 285, pp. 28-34, lllust, 1906.

Describes briefly the occurrence and relations of the igneous and sedimentary rocks of the region and the occurrence and development of placer and lode gold deposits.

2. Carnotite in Rio Blanco County. U. S. Geol. Surv., Bull.

315, pp. 110-117, must., 1907.

Description of carnotite. geology of Coal Creek district, and extent and origin of the deposits.

Bibliography Of Colorado Geology 109

Gkde, Hoyt S. — Continued

3. Coal fields of the Danforth Hills and Grand Hogback in

northwestern Colorado. U. S. Geol. ., Bull. 316, pp. 2G4-301, Illust., 1907.

Contains brief description of the Yampa coal field, Routt County.

4. Placer gold in Routt County, near Lay. U. S. Geol.

Surv., Bull. 340, pp. 84-95, Illust., 1908. Review : Mg.

World, vol. 28, p. 950, 1907.

Describes tlie general geology, the distribution of auriferous deposits, and the character and source of the gold.

5. Geology of the Rangely oil district, Rio Bianco County,

Colorado, with a section on the water supply. U. S.

Geol. Surv., Bull. 350, 61 pp., Illust., maps, 1908.

Gives location, topography, geology of the field, and the character and occurrence of the oil. Discusses the correlation of Cretaceous and Tertiary formations of western Colorado.

6. Carnotite and associated minerals in western Routt

County. U. S. Geol. Surv., Bull. 340, pp. 256-262,

Describes the geologic structure and stratigraphy of the region and the occurrence and character of the ores.

7. Coal fields of northwestern Colorado and northeastern

Utah. U. S. Geol. Surv., Bull. 341, pp. 283-315, maps,

Illust, 1909.

Description of western part of Yampa coal field and the lower White River, Vernal, and Henrys Fork fields, with maps of the different areas, and analyses of the coals.

8. Coal fields of northwestern Colorado and northeastern

Utah. U. S. Geol. Surv., Bull. 415, 265 pp., Illust., maps, 1910.

GhJe, Hoyt S., and Fenneman, N. M.

1. The Yampa coal field. See Fenneman, N. M., and Gale, Hoyt S.

Gannett, Henry.

1. Geographical report on central Colorado. Hayden Surv.,

7th Ann. Rept., pp. 670-681, map, 1874.

Discusses the drainage, rainfall, vegetation, population, mountain passes, roads, and trails, and gives list of elevations.

110 Bibliography Of Colorado Gboloot

Oaxmetty Henry — Continued.

2. Report of Henry Gannett, Topographer directing middle

division. Hayden Surv., 8th Ann. Rept., pp. 413433,

map, 1876.

Previous explorations, geography, height of the walls of the Grand Canyon of the Gunnison, distribution of vegetation, settlements, trails, roads, etc. Elevations; revision of the heights of summits in the Sawatch and Elk systems. Elk Mountains.

3. Notes in relation to the accompanying contour-map of

the U. S. Hayden Surv. Bull., vol. 2, no. 3, pp. 223- 226, map, 1876.

4. Report of Henry Gannett, Topographer of the Grand

River division. Hayden Surv., 9th Ann. Rept., pp.

335-350, maps, 1877.

Topographical report on the Grand River district Describes topography, vegetation, streams, roads, and trails, and gives lists of elevations.

5. List of elevations principally in that portion of the

United States west of the Mississippi River. Hayden

Surv., Misc. Pub., no. 1, X, 167 pp., map, 1877.

Discussion and correlation of railroad profiles, miscel- laneous tables, elevations and slopes of some of the prin- cipal rivers of the West.

6. Report of Henry Gannett, on the arable and pasture

lands of Colorado. Hayden Surv., 10th Ann. Rept.,

pp. 311-347, 1878.

Physical geography: topography, climate. Estimated distribution of arable and other lands in Colorado. Amount of water used in irrigation. Proper season for gauging streams. Cultivable areas in Colorado. The North Platte drainage area. South Platte, Arkansas, San Luis Valley, San Juan, Grand River. White, and Yampa River areas. Irrigation In Colorado. Ditches, cost, res- ervoirs. Grazing lands In Colorado.

7. Additional list of elevations. Hayden Surv., Bull., vol.

5, no. 3, pp. 441-470, 1880.

Includes a large number of Colorado points.

8. Prehistoric ruins in southern Colorado. Pop. Sci.

Monthly, vol. 16, pp. 666-673, 1880.

Includes notes on topography and geology.

9. The Unaweep Canyon. Pop. Sci. Monthly, vol. 20, pp.

781-786, 1882.

Bibliography Of Colorado Gbology 111

Gkumett Henry — Continued.

10. A dictionary of altitudes in the United States. IT. S.

Geol. Surv., Bull. 5, 325 pp., 1884. Altitudes in Colorado, pp. 55-70.

11. A dictionary of altitudes in the United States. U. S.

Geol. Surv., Bull. 76, 393 pp., 1891.

Second edition, enlarged, and in single alphabetic arrangement

12. Results of primary triangulation. U. S. Geol. Surv.,

Bull. 122, 412 pp., Illust, 1894.

Methods of work, description, and position of stations in Pitkin and Gunnison Counties.

13. A dictionary of geographic positions in the United States.

U. S. Geol. Surv., Bull. 123, 183 pp., Illust., 1895. Geographic positions in Colorado, pp. 133-135.

14. Magnetic declination in the United States. U. S. Greol.

Surv., 17th Ann. Kept., pt. I, pp. 203-440, Illust.,

Colorado reference, pp. 288 and 317-320.

15. A dictionary of altitudes in the United States. U. S.

Geol. Surv., Bull. 160, 775 pp., 1899. (3rd edition.)

16. The forests of the United States. U. S. Geol. Surv., 19th

Ann. Kept., pt. V, 400 pp., 1899.

17. Forest reserves. U. S. Geol. Surv. 20th Ann. Kept., pt.

V, 498 pp., Illust, maps, 1900.

Abstract of report on forest reserves, Pikes Peak, Plumb Creek, South Platte, Battlement Mesa, and White River.

18. The timber line. Am. Geog. Soc, Bull., vol. 31, pp. 118-

122, 1899.

Timber line in Colorado.

19. Physiographic types. U. S. Geol. Surv., Atlas of U. S.,

folio no. 2, 1900.

Illustrates hogbacks. West Denver sh,eet.

20. Boundaries of the United States and of the several states,

and territories with an outline of the history of the important changes in territory. U. S. Geol. Surv., Bull. 171, 142 pp., Illust., 1900. (2nd edition.)

21. The origin of certain place names in the United States.

U. S. Geol. Surv., Bull. 197, 280 pp., 1902.

22. Boundaries of the United States and of the several states,

and territories with an outline of the history of all

112 Bibliography Of Colorado Gboloot

Oannett, Henry — Continued.

important changes of territory. IT. S. Geol. Surv., Bull. 226, 145 pp., TlluRt., 1904. A reprint of Bulls. 13 and 160.

28. The origin of certain place names in the United States. U. S. Geol. Surv., Bull. 258, 334 pp., 1905. (Second edition.)

24. A dictionary of altitudes of the United States. U. S.

Geol. Surv., Bull. 274, 1072 pp., 190C. (4th edition.)

25. A gazetteer of Colorado. U. S. Geol. Sur\'., Bull. 291,

185 pp., 1906.

26. The areas of the United States, tlie states and the terri-

tories. U. S. Geol. Surv., Bull. 302, 9 pp., map., 1906. Table of areas in square mllee.

Oannett, S. S.

1. Results of primary' triangulation and primary traverse,

fiscal year, 1902-3. U. S. Geol. Surv., Bull. 216, 222

pp., Illust., 1903.

Colorado: Points in Larimer County.

2.* Results of primary triangulation and priiriary traverse,

fiscal year 1903-1904. U. S. Geol. Sun., Bull. 245,

328 pp., Illust, 1905.

Bbulder, Clear Creek, Gilpin, Jefferson, Gunnison, Hins- dale, Ouray counties, and Lake City quadrangle.

3. Results of primary triangulation and primary traverse,

fiscal year 1904-5. U. S. Geol. Surv., Bull. 276, 263

pp., Illust., 1905.

Stations in Clear Creek, Gilpin, Hinsdale. Mineral, SaRuache, Rio Grande, and San Juan counties.

Gardner, J. H.

1. The coal field between Durango, Colorado, and Monero, New Mexico. U. S. Geol. Surv,, Bull. 341, pp. 352-364, map, 1909.

Gardner, James T.

1. Sketch of the methods of survey in tlie geographical de- partment. Hay den Surv., 7th Ann. Rept., pp. 627-

628, map, 1874.

Descri])os th method, in detail, of the triangulation for the Colorado topop:rnphlral map.

Bibliography Of Colorado Gboloot 113

Oardner, James T. — Continued.

2. The elevations of certain datnni-points on the Great

Lakes and Rivers and in the Rocky Mountains. Hay- den Surv., 7th Ann. Rept., pp. 629-659, map, 1874.

Describes the methods employed by the Hayden Survey in determining elevations, and gives, among others, the rfevatlon of the following Colorado points: Denver, Golden, Colorado Springs. Pikes Peak. Mount Lincoln, and Fairplay.

3. Notes on the Rooky Mountain ranges in Colorado Terri-

tory. Hayden Surv., Bull., vol. 1, no. 2, 1st. ser., pp. 72-77, 1875.

Includes a list of prominent points, with approximate elevations and geographical positions.

Gkurrey, G. II., Ball, S. H., and Spurr, J. E.

1. Georgetown quadrangle. See Spurr, J. K., Garrey, G. H., and Ball, S. H.

Oarrey, G. H., and Spurr, J. E.

1. Preliminary report on Georgetown mining district.

2. Idaho Springs mining district. See Spurr, J. E., and

Garrey, G. H.

Geare, R. I.

1. A list of publications of the U. S. Nat. Museum. U. S. Nat. Museum Bull., vol. 51, 1(58 pp., 1902.

Oeijsbeek, S.

1. Whiteware possibilities of Colorado raw materials. Am. Ceramic Soc, Trans., vol. 8, pp. 98-108, 1906. Clay deposits of Golden discussed.

Geikie, Archibald.

1. Geology of the far west. Nature, vol. 21, pp. 67-69, 1879.

Report of a lecture given by Prof. Geikie to his class in the University of Edinburgh.

CtaEtfa, F. A.

la. Contributions to mineralogy. Am. Phil. Soc, Proc, vol.

14, pp. 226-230, 1874.

Description of hessite. petzite, altaite, sylvanite, kren- nerite from Red Cloud mine. Colorado; schirmerite from Treasury lode. Park County.

114 Bibliography Of Colorado Geology

Oenth, F. A. — Continued.

Am. Phil. Soc, Proc, vol. 16, p. 518, 1877; Am. Phil.

Soc, Proc, vol. 17, pp. 115-120, 1877; Am. Jour. Sci.,

3rd ser., vol. 12, p. 32, 1876.

Description of coloradolte from Keystone, Mountain Lion, and Smuggler mines; manollte from Keystone mine. Magnolia district; roscoelite; zircon from El Paso County.

Am. Phil. Soc, Oct. 2, 1885; Am. Jour. Sci., 3rd ser.,

vol. 31, pp. 229-231, 1886; Am. Jour. Sci., 3rd ser.,

vol. 39, p. 73, 1890.

Description of Jaroslte.

1. Contributions to mineralogy; with crystallographic note

by S. L. Penfield. Am. Jour. Sci., 3rd ser., vol. 44,

pp. 381-389, Illust, 1892.

Contains descriptions and analyses of rutile. danallte. and cyrtollte from Colorado.

2. Contributions to mineralogy : crystallographic note, S. L.

Penfield. Am. Jour. Sci., 3rd ser., vol. 43, pp. 184

189, Illust., 1892.

Includes descriptions and analyses of hQbnerite from San Juan County and blsmutite from ChafFee County.

3. On anglesite associated with boleite, no. 55. Am. Jour.

Sci., 3rd ser., vol. 45, pp. 32-33, 1893. Abstract:

Am. Nat., vol. 26, p. 1090, 1893.

Gives the crystallographic characters of the crystals examined, and two chemical analyses.

Oeorge, R. D.

1. Polished pebbles. Science, new ser., vol. 25, pp. 626-627,

Contains description of polished pebbles from near Boulder and near Villa Grove.

2. Tungsten mining in Colorado. Min. Ind., vol. 17, pp.

827-828, 1908.

Production of Boulder County mines for 1908.

3. The main tungsten area of Boulder county, Colorado,

with notes on the intrusive rocks, by R. D. Crawford. Colo. Geol. Surv., 1st Kept., 1908, 96 pp. Illust, maps, 1909.

Describes the tungsten deposits of Colorado, with Boul- der County in detail.

4. Tungsten industry of Boulder county, 1908. E. and M.

J., vol. 87, p. 1055, Illust, 1909.

Bibliography Of Colorado Geology 116

George, R. D. — Continued.

4a. Bibliography of uranium and vanadium. Mining Science, vol. 63, p. 241, 1911.

5. Common minerals and rocks, their occurrence and uses.

Colo. Geol. Surv., Bull. 6, 406 pp., Illust., map of coal areas, 1913.

Cites Colorado localities for many of the rocks and minerals described, and gives notes on the character of Colorado coals, building stones, oil and gas. Describes a new silver telluride mineral, empressite, from Bonanza, Saguache County, and quotes description by G. M. Butler of two new zinc minerals, wurtzite and goslarite, from LeadvUle.

6. Topographic map of Colorado. Colo. State Geol. Surv.,

1913. Scale 1-500,000, contour interval 500 feet,

hypsometric coloring.

Prepared from maps and data of the U. S. Geol. Surv.; U. S. Geol. and Geog. Surv. of the Territories (Hay den) ; U. 8. Geol. Exploration of the Fortieth Parallel (King); U. S. Geog. and Geol. Surv. West of the One Hundredth Meridian (Wheeler) ; the State Geol. Surv. of Colorado; Land Plats in the office of the Surveyor General (Den- ver) ; Maps of the Reclamation Service, and the U. S. Forest Service; Maps furnished by county officials, rail- way companies, industrial corporations. State Highway Commission, etc. Work completed In 1912. Drafting by H. C. Woods.

7. Geologic map of Colorado. Colo. State Geol. Surv., 1913.

Scale 1-500,000. Work complete in 1912.

Prepared from maps and data of the U. S. Geol. Surv.; U. S. (3eol. and Geog. Surv. of the Territories (Hayden) ; U. S. GJeol. Exploration of the Fortieth Parallel (King) ; and the Colo. Geol. Surv. The drafting was done by H. C. Woods.

8. Ore deposits of the sulphide belt. Colo. Sch. of Mines

Quart., Jan., 1912.

Abstract of paper read before the Colorado Mining and Metallurgical Association, Dec., 1911.

9. State aid for mining. Colo. Sch. of Mines Quart., Jan.,

Abstract of paper read before the Colorado Mining and Metallurgical Association, Dec., 1911.

Oeorge, R. D., and Crawford, R. D.

1. The Hahns Peak region, Routt Countj. An outline sur- vey. Colo. Geol. Surv., 1st. Rept., pp. 193-228, map,

116 Bibliography Of Colorado Oboloot

Gilbert, G. E.

1. Natural erosion by sand in the western territories. (Ab-

stract.) . Am. Assoc. Adv. Sci., Proc, vol. 23, pt, 2, pp. 26-29, 1875.

2. The Colorado plateau province as a field for geological

study. Am. Jour. Sci., 3rd ser., vol. 12, pp. 16-24, 85-103, 1876. Abstract: Am. Assoc. Adv. Sci., Proc. vol. 23, pt. 2, pp. 32-35, 1875.

3. Lake basins created by wind erosion. Jour. Geol., vol. 3,

pp. 47-49, 1895. Abstract: Sci. Am. Suppl., vol. 39,

p. 16157, 1895.

Discusses the evidences of the action of the wind in forming small lake basins in the arid portion of the Arkansas Basin.

4. Sedimentary measurement of Cretaceous time. Jour.

Geol., 3, pp. 121-127, 1895.

Describes certain alternations of strata in Colorado, correlates these with the precession of equinoxes, and from this deduces an estimate in years of a portion of Cretaceous time.

5. The undergi'ound waters of the Arkansas valley in east-

ern Colorado. U. S. Geol. Surv., 17th Ann. Kept., pt. 2, pp. 553-601, Illust., 1896.

Describes the character, distribution, and structure of the Jurassic and Cretaceous strata, the sands and grav- els, and the general conditions of the artesian wells and ground waters.

6. Laccolltes in southeastern Colorado. Jour. Geol., vol. 4,

pp. 816-825, must., 1896.

Describes the character of the laccolitic rocks, the structure of the region, and the lithologic character and distribution of the associated Dakota and Neocene beds

7. Pueblo folio. U. S. Geol.' Surv., Geol. Athis of U. S.,

folio no. 36, 1897.

Describes the geologic history of the region, the char- acter and occurrence of the Archean, Silurian, Carbonif- erous, JurarTrias, Cretaceous, Neocene, and Pleistocene strata, the character, and origin of the topographic fea- tures, and the economic resources of the region. IncludeB topographic and geologic maps.

Bibliography Of Colorado Gbology 117

ft

Gilbert, G. K., and Gulliver, P. P.

1. Tepee Buttes. Geol. Boo. Am., Bull., vol. 6, pp. 333-342,

IlluBt., 1895.

Describes the character of the Pierre group of Colo- rado, in which the buttes occur, the general features of the buttes.

Gilbert, G. K., Marvine, A. R., and Howell, E. E.

1. Map. Part of Colorado. Geol. Atlas, Surveys west of the 100th meridian, under Wheeler, folio, 1876.

Giles, J. M., Hoyt, J. C, and HinderUder, M. C.

1. Report of progress of stream measurements for the year

1905. See Hinderlider, M. C., Hoyt, J. C, and Giles, J. M.

OileSy J. M., and Meeker, R. J.

1. Surface water supply of the Missouri river drainage,

1906. See Meeker, R. J., and Giles, J. M.

Gilmore, Charles W.

1. The type of the Jurassic reptile Morosaurus agilis re-

described, with a note on Camptosaurua. U. S. Nat.

Mus., Proc, vol. 32, pp. 151-1G5, Illust., 1907.

Description of a type specimen from the Upper Juras- sic (Morrison beds) of Garden Park, near Canon City.

2. Osteology of the Jurassic reptile Camptosaurus, with

a revision of the si)ecies of the genus, and descrip lions of two new species. U. S. Nat. Mus., Proc vol. 36, pp. 197-332, Illust, 1909.

Gilpin, William.

1. The parks of Colorado. Am. Jour. Sci., 2nd ser., vol.44,

pp. 351-362, 1867.

San Luis Park described.

la. Map of Colorado territory, embi-acing the central gold region. Drawn by F. J. Ebert, under the direction of Governor William Gilpin. 25 x 35 inches. New York, G. W. and C. B. Colton and Company, 1866.

2. On the physical geography of Colorado and adjacent re

gions. Brit. Assoc. Adv. Sci., vol. 40, p. 170, 1870.

118 Bibliography Of Colorado Geology

Girty, George H.

1. Devonian fossils from southwestern Colorado : the fauna

of the Ouray limestone. U. S. Qeol. Surv., 20th Ann.

Kept., pt 2, pp. 31-63, Illust, 1900.

Reviews the geological literature of this region, dis- cusses the evidences as to the age of the beds, and describes the fossils collected from them.

2. The Carboniferous formations and faunas of Colorado.

U. S. Geol. Surv., Prof. Paper 16, 546 pp., Illust.,

Reviews In chronologic order the literature bearing upon the subject and includes a bibliography. Gives r6sum6 of the literature upon the stratigraphic geology of Carboniferous area of Colorado. Describes the charac- ter and occurrence of the Paleozoic formations, discusses the occurrence and correlation of the Carboniferous fossil faunas by geographic areas and localities, with lists of species, and gives systematic descriptions of the species.

3. The Guadalupian fauna. U. S. Geol. Surv., Prof. Paper

58, 651 pp., Illust, 1908.

A short reference to Colorado fossils.

4. Upper Carboniferous. Jour. Geol., vol. 17, pp. 305-319,

5. On some invertebrate fossils from the Lykins formation

of eastern Colorado. N. Y. Acad. Sci., Annals, vol.

22, pp. 1-8, Illust., 1912.

Describes Alula n. gen., Alula squamulifera n. sp., Murchisonia buttersi n. sp., and records Myalina perat- tonnata M. and H., M. wyomingensis Lea and Alula gil- berti White from lower one-third of Lykins formations, correlates the fossil horizon with Rico formation and tentatively considers it Permian.

Girty, George H., and Spencer, Arthur C.

1. The Devonian of southwestern Colorado. See Spencer, Arthur C, and Girty, George H.

Gleditsch, Ellen.

1. Sur le rapport entre Turanium et le radium dans les mineraux actifs. Ie Radium, vol. 8, 1911.

Glenn, W.

1. Mine explosions generated by grahamite-dust. A. I. M. E., Trans., vol. 24, pp. 195-207, 1894.

Bibliography Of Colorado Oeoloqt 119

Gk>ldman, M. I.

1. The Colorado Springs coal field. TJ. S. Geol. Surv., Bull.

381, pp. 317-340, map, 1910.

Describes the general features of the area, the stratig- raphy, the geologic structure, the character, occurrence, and relations of the coal beds, and the character of the coal.

Oordon, C. H., and Graton, L. C

1. Lower Paleozoic formations in New Mexico. Am. Jour.

Sci., 4th ser., vol. 21, p. 394, 1906.

Describes Devonian formation probably equivalent to Ouray limestone in Colorado.

GkK>dell, E. B.

1. A review of the laws forbidding pollution of the inland waters in the United States. U. S. Geol. Surv. W. 8. Papers 103, 152, 120 pp., 1905.

Grabau, A. W., and Shimer, H. W.

1. North American index fossils. Columbia Sch. Mines quart., vol. 27, pp. 138-243; vol. 28, pp. 20-100, Illust., 1906; vol. 1, 853 pp., vol. 2, 909 pp.. New York, A. G. Seller and Company, 1910.

GrabiU, L. R.

1. On the peculiar features of the Bassick mine. E. and M. J., vol. 34, pp. 226-228, 1882; A. I. M. E., Trans., vol. 11, pp. 110-117, 1883.

Oraton, Louis Caryl.

1. Consanguinity of the eruptive rocks of Cripple Creek. Description and petrology of the metamorphic and igneous rocks. U. S. Geol. Surv., Prof. Paper 54, pp. .41-113, Illust., 1906. Abstract: Science, new ser.,

vol. 21, p. 391, 1905.

Describes the distribution and the petrography and chemical character of the various Igneous and metamor- phic roclts of the Cripple Creek district, and discusses their magmatic derivation.

Oreenawalt, W. E.

1. Chlorination in Colorado. E. and M. J., vol. 78, pp. 668

670, must, 1904.

Treatment of Cripple Creek ores.

2. The tungsten deposits of Boulder County. E. and M. J.,

vol. 83, pp. 951-952, Illust., 1907.

120 Bibliography Of Colorado Gbologt

Greenawalt, W. E. — Continued.

3. Tungsten deposits of Boulder County. Cornell Civ. Eng., Jan., 1912.

Grenier.

1. The rare minerals in Colorado. E. and M. J., vol. 23, pp. 352-353, 1877.

OrifBn, Charles E.

1. Chemical estimation of uranium and vanadium. Mg. and Eng. World, vol. 37, pp. 247-248, 1912.

Oriffith, David.

1. Seventh Biennial report of the inspector of coal mines of

the state of Colorado, 1895-1896.

Coal production, 1873-1896; by counties for 1894 and 1895. Coke production. Mines of Las Animas, Huer- fano, Fremont, El Paso, JefCerson, Park, Pitkin, Garfield. Gunnison, Mesa, La Plata, Boulder, and Weld counties described.

2. Colorado coal, 1898. Mines and Minerals, 19, p. 320, 1899.

Coal production by counties, 1898.

Griswold, C. T.

1. Lignite mining in Colorado. (Denver basin and Colorado Springs fields.) Coal Mg. . of Am., Proc, 1911, pp. 321-330, 1912.

Oross, John.

1. The concentration of Gilpin County ores as carried on at Golden Concentration works. Mg. Tnd. and Rev., vol. 19, pp. 120-127, 1897.

Grout, Frank P.

1. The relation of texture to the composition of coal. Ec.

Geol., vol. 6, pp. 449-464, 1911.

Describes a coal from the Gorham mine. Marshall, and gives analysis.

Grout, P. P., Worcester, P. 6., and Henderson, Junius.

1. Reconnaissance of the geology of the Rabbit Ears region, Routt, Grand and Jackson Counties, Colorado. Colo. Geol. Surv., Bull. 5, pt. I, pp. 1-5, 7, maps, 1913.

Guentherodt, J. J.

1. Twin Lakes region. Coll. Eng., vol. 17, pp. 201-202, 1896.

Describes thp oerurrence of ffold placers and veins near Leadville.

Biblioohapuy Of Colorado Oboloqy 121

Ouiterman, F.

1. Ck)ld deposits in the quartzite formation of Battle Moun-

tain. Colo. Sci. Soc, Proc, vol. 3, pp. 264-268, 1890. Describes the occurrence and character of the ore.

2. Mining and smelting in Colorado. Mg. Sci., vol. 62, pp.

436437, 1910; Mg. and Sci. Press, vol. 101, pp. 699-700, 1910; Mg. Wofld, vol. 33, pp. 953-954, 1910.

3. On the use, non-use and waste of the mineral resources of

Colorado. Colo. Sci.. Soc, Proc, vol. 9, pp. 431-450,

Oniterman, Kenneth S.

1. Mining coal in southern Colorado. E. and M. J., vol. 8S,

pp. 1009-1015, 1909.

Description of geology of coal fields of Huerfano and Las Animas counties, and coke plant of the Carbon Coal and Coke Company.

Oulliver, F. P., and Gilbert, G. K.

1. Tepee Bnttes. See Gilbc rt, G. K., and Gulliver, F. P.

Ouxmisoii, J. W. See Beckwith, E. 6., 1 .

Ounther, Charles G.

1. The gold deposits of Tlomo, San Luis Park. Ec Qeol., vol.l, pp. 143-151, lUust, 1905.

Describes the general geology, the lithologic characters of the rocks, and character, occurrence, and relations of the ore bodies.

Onyard, A.

1. Metallurgy of Leadville ores. Geology' and Mining In- dustry of Leadville, TJ. S. Geol. Surv., Mon. 12. See Emmons, 9.

Hague, Arnold, nd Emmons, Samuel Franklin.

1. Descriptive geology. King Surv., vol. 2, XIII and 890 pp.,

niust., 1877.

Ch. I. Rocky Mountains. Sec. 1, 2, 3, 4, 5, and 6 by A. Hague. Sec. 1, Colorado range: physical aspect of the great plains. Physical description of the Laramie H'ills, Archean geology, eastern foothills, Paleozoic forma tions, Triassic formations, Jurassic formations, Dakota Cretaceous, Colorado Cretaceous, descriptive geology of eastern foothills. Cretaceous, plains of Colorado, Ter- tiary, plains of Wyoming. Sec. 2. Laramie plains. Sec. 3, Medicine Bow ranges; i)liysical description, geological description, conclusions. Sec. 4, North Park; physical description. Paleozoic and Meaozoic, volcanic rocks. Ter-

122 Bibliography Ofcolobado Geology

HagulB, Arnold, and Emmons, Samuel Franklin — Continued.

tiary beds. Sec. 5, Park range: physical description; geological description. Sec. 6, Cretaceous region from Como to Separation. Sec. 7, 8, and 9 by S. F. Emmons. Sec. 7, West of North Platte River. Sec. 8, Elkhead Mountains: general description, trachytic region, basaltic region. Sec. 9, Valleys of the Yampa and Little Snake rivers. Ch. II. Green River basin, by S. F. Emmons. Sec. 1, Physical description: Green River basin, Uinta Range. Sec. 2, General geology: the Uinta uplift. Ter- tiary formations. Sec. 3, Descriptive geology of the basin region: Washakie basin, Brown's Park and Yampa valley, Vermillion and Red Creek basins, Cretaceous uplift at Bitter Creek, volcanic rocks, Bridger basin. Cretaceous uplift of Oyster ridge. Sec. 4, Descriptive geology of the mountain region: northern slopes of the . Uinta Range, Escalante Hills, and Yampa Plateau, Sum- mit region at Lodore Canyon and westward, Ashley Creek basin, southern flanks of the Uinta Range. (Sec. 5, Tertiaries of the Uinta Valley. Ch. III. Utah basin, by Hague and Emmons. Ch. IV. Nevada Plateau, by Hague and Emmons. Ch. V. Nevada basin, by Hague and Emmons.) Note: Generalized section of sedimentary formations.

Hague, J. D.

1. Mining industry in Colorado. King Surv., vol. Ill, Ch.

VIII, IX, & X, pp. 475-624, Illust., map, 1870.

Ch. VIII. Colorado: general features, mineral wealth, coal, iron, precious metals, bullion product. Ch. IX. Gold mining in Colorado: Sec. 1, Gilpin County, gold veins; Bobtail, Gregory, Bates, Illinois, Gardner, Bur- roughs, Flack, California, Winnebago. Sec. 2, Treatment of the ores, milling, smelting,. bullion product of Gilpin County. Ch. X. Sliver mining In Colorado: Sec. 1, Georgetown silver-bearing veins; Terrible, Brown, U. S. Coin, Sherman Mountain, Baker. EJquator, Argentine, Tunnels. Sec. 2, Treatment of the ores: smelting works, amalgamation works, concentration, production. Sec. 3, Snake River mines.

Haldane, \Vm. 6., and Fleck, Herman.

1. A study of uranium and vanadium salts of southern

Colorado.

2. Radioactivity of camotite of southwestern Colorado. See

Fleck, Herman, and Haldane, Wni. G.

Biblioorapht Of Colorado Oboloot 128

Hale, Irving.

1. Electric mining in the Rocky Mountains. A. I. M. E., Trans., vol. 26, pp. 402-439, 1071, 1896. Abstract: Mg. Ind. and Rev., vol. 18, pp. 177-179, 1896.

Hall, C. L.

1. Colorado oil and coal fields. Mg. Ind. and Rev., vol. 19,

pp. 218-219, 1897.

Florence oil wells described.

2. The marble works of Gunnison County. Mg. Sci., vol. 64,

pp. 178-179, 1911.

HaU, Frank H.

1. Colorado, review of mining industry, 1908. Mg. World,

vol. 30, pp. 193-196, 1909.

2. Colorado, review of mining industry, 1909. Mg. World,

vol. 32, pp. 173-177, 1910.

3. Colorado, review of mining industry, 1911. Mg. and Kng.

World, vol. 36, pp. 208-213, 1912.

Hall, James.

1. Descriptions of organic remains collected by Captain J. C. Fremont in the geographical survey of Oregon and north California. Rept. Expl. Exped. Rocky Mts. in 1842, and to California in 1843-44, J. C. Fremont, App. B., pp. 304-310, Illust, Wash. 1845. Abstract : Am. Jour. Sci., 2nd ser., vol. 3, pp. 273-274, 1847.

Hall, R. O.

1. Secondary enrichment in copper veins. E. and M. J., vol.

75, p. 288, 1903.

La Sal mine, Montrose County.

Halland, Alfred S.

1. Cryolite and its industrial applications. Mg. World, vol.

34, pp. 689-690, 1911. Abstract of paper read before

the Western New York section of the Amer. Chem.

Soc. at the University of Buffalo, Nov. 3, 1910.

Reference to the cryolite found at Pikes Peak, Colo- rado.

Hallowell, John K.

1. Supposed Jura-Trias of the Front Range of Colorado.

Kansas City Rev., vol. 6, pp. 492-496, 1883.

2. Tertiary coal measures of Gunnison County. Kansas City

Rev., vol. 6, pp. 688-696, 1883.

124 Bibuographt Op Colorado Qbologt

Hallowell, John K. — Continued.

8. Gunnison, Colorado's bonanza county. Colo. Museum of Applied Geology, p. 106, 1883.

Hanes, J. B., and Parsons, P. W. .

1. Coal mining in Colorado. E. and M. J., vol. 82, pp. 973-975, must, 1906.

Harder, E. C.

1. Manganese ores. U. S. Geo). Surv., Min. Res. 1908, pt. 1,

pp. 135-156, 1909.

Production of manganese ores used for fluxing, etc.. 1905-8, manganiferous silver ores of Leadville described, and production of ferromanganese.

2. The Taylor Peak and Whitepine iron ore deposits. U. S.

Geol. Surv., Bull. 380, pp. 188-199, map, 1909.

Manganese deposits of the United States. U. S. Geol. Surv., Bull. 380, pp. 255-278, 1909. Abstract: Mg. Sci., vol. 62, pp. 387-388, 1910.

4. Manganese deposits of the United States. V. S. Geol.

Surv., Bull. 427, pp. 132-152, Illust, 1910.

Ores of Leadville district, Eagle County, San Juan district, and Gunnison and Pitkin counties discussed, and analysis of ores given.

Harding, James E.

1. The new Rankin-Westling reduction process at Lake City. Mg. Sci., vol. 63, pp. 11-12, Illust, 1911.

Harris, C. H.

1. The stone industry, past and present, remarkable re sources of Colorado. Mg. Tnd. and Trad., vol. 16, pp. 22, 30, 1895.

Harris, G. D., and Dall, W. H.

1. Porivlation papers, Neocene. See Dall, W. H., and

Harris, G. D.

Hartley, Carney.

1. Uenewed interest in old Tarryall placers. Mg. Sci., vol. 64, pp. 83-84, 1911.

2. JMacer mining in upir valley of (irand River. (Willow

Creek.) Mg. and Eng. World, vol. 37, pp. 851-852,

Bibliography Of Colorado Qeolooy 125

Hartman, Frank.

1. La Plata County, mining poesibilitieR. Pacific Coast

Miner, vol. 7, pp. 219-221, 1903.

Mineral and coal mines described.

2. Milla of the San Juan region. Mines and Minerals, vol.

22, pp. 249-251, ., 1902:

The means by which low grade ore deposits have been made profitable.

HagtingB, John B.

1. Primary gold in a Colorado granite. A. I. M. E., Trans., vol. 39, pp. 97-103, must., 1908; A. I. M. E., Bull. 21, pp. 311-317, 1908.

Hatcher, J. B.

1. The Ceratops beds of Converse County, Wyoming. Am.

Jotir. Rci., 3rd ser., vol. 45, pp. 135-144, 1893.

2. The Titanotherium beds. Am. Nat., vol. 27, pp. 204-221,

Illust, 1893.

3. Some localities for Laramie mammals and homed dino-

saurs. Am. Nat., vol. 30, pp. 112-120, map, 1896. Mentions locality near Denver.

4. The Jurassic dinosaur deposits near Canon City. Car-

negie Mus., Annals, vol. 1, no. 2, pp. 327-341, 1901. Describes the mode of occurrence of the saurian re- mains near Canon City and the geology of the strata in which they are found.

5. A new sauropod dinosaur (Haplocanthus) from the

Jurassic of Colorado. Wash. Biol. Soc, Proc, vol. 16, pp. 1-2, 1903.

6. Osteology of Haplocanthosaurus, with description of a

new species, and remarks on the probable habits of Sauropoda and the age and origin of the Atlan- to{<aurus beds. Carnegie Mus., Mem., vol. 2, no. 1, pp. 1-72, Illust.. 1003.

Hatcher, John B., Marsh, 0. C, and Lull, R. S.

1. The Ceratopsia. U. S. (Jeol. Surv., Mon. 40, 300 pp.,

Illust., 1907.

Based on prelimlnai-y studies by O. C. Marsh and edited and completed by R. S. Lull.

Hatamann, A.

1. Interesting occurrence of gold. E. and M. J., vol. 51,

p. 516, 1891.

Famcombe Hill, Snnamit County.

126 Biblioorapht Of Colorado Gioloot

Hawes, G. W.

1. Report on the building stones of the United States and statistics of the quarry industry for 1880. 10th Cen- sus, U. S., vol. 10, XIII and 410 pp., Illust, 1883. ' Contains descriptions of Colorado quarries, pp. 277-279, and briefly describes, on p. 300, Colorado building stone used In Denver.

Hawkins, J. D.

1. Minium from Leadville. Am. Jour. Sci., 3rd ser., vol. 39,

pp. 42-43, 1890.

Gives physical characters and analysis.

Hawn, Laurens.

1. Geological notes made on the Ute reconnaissance during examination of the Animas. Report of the recon- naissance in the Ute country, made in 1873, by Ruff- ner, pp. 66-69, 42nd Cong., 1st sess.. House Ex. Doc. no. 193, Wash. 1874.

Hawn, F.

1. Geological observations (in the Ute country). Report of the reconnaissance in the Ute country, made in 1873, by Ruffner, pp. 59-66, 69-85, 42nd Cong., Ist'sess., House Ex. Doc, no. 193, Wash. 1874.

Hay, Oliver Perry.

1. Descriptions of some vertebrates of Carboniferous age.

Am. Phil. Soc, Proc, vol. 39, pp. 96-123, Illust, 1900. Describes vertebrates from Sub-Carboniferous of Colo- rado.

2. Bibliography and catalogue of the fossil vertebrata of

North America. F. S. Gool. Surv., Bull. 179, 868 pp.,

3. Description of a new species of Cladodus (C. formosus)

from the Devonian of Colorado. Am. Geol., vol. 30, pp. 373-374, Illust., 1902.

4. On some recent literature bearing on the Laramie forma-

tions. Am. Geol., vol. 32, pp. 115-120, 1903.

."). A description of a new genus and species of tortoise from the Jurassic of Colorado. Carnegie Mus., Annals, vol. 2, pp. 201-203, Illust., 1903.

(i. A new gigantic tortoise from the Miocene of Colorado. Abstract: Science, new ser., vol. 19, pp. 294-300,1904.

Bibliooeaphy Op Colorado Geology 127

Hay, Oliver Perry — Continued.

7. The American Paleontological Society. Sec. A. Verte

brata. Science, vol. 21, new ser., pp. 294-300, 1905.

8. On certain genera and species of carniverous dinosaurs

with special reference to Ceratosaurus nasicornis Marsh. U. S. Nat. Mus., Proc, vol. 35, pp. 351-366,

9. Descriptions of eight new species of fossil turtles from

west of the one hundredth meridian. U. S. Nat. Mus.,

Proc, vol. 38, pp. 307-326, Illust., 1910.

Describes Alamosemys annexa n. sp. from La Plata County.

Hay, Robert.

1. A contribution to the geology of the Great Plains. Geol.

Soc. Am., Bull., vol. 3, pp. 519-521, 1892. Abstract :

Am. Geol., vol. 11, pp. 56-57, 1893.

The surface of the plains area consists of calcareous and arenaceous clays of Tertiary age which may grade into post-Pliocene to the east

2. Water resources of a portion of the Great Plains. U. S.

Geol. Surv., 16th Ann. Kept., pt. 2, pp. 535-588, Illust.,

Describes the hydrology, geology, and topography and the water-bearing formations of a portion of western Kansas and Nebraska and eastern Colorado.

Hayden, P. V.

1. On the geology and natural history of the upper Mis-

souri, being the substance of a report made to G. K. Warren. Am. Phil. Soc, Trans., vol. 12, new ser., pp. 1-219, map, 1863. Published separately, 218 pp., map, Philadelphia, 1862.

2. Iron and coal in Colorado. (Boulder County coal.) Am.

Jour. Sci., 2nd ser., vol. 44, p. 314, 1867.

3. Notes on the geology of Wyming and Colorado, no. 1.

Am. Phil. Soc, Proc, vol. 10, pp. 463-478, 1868.

4. Rocky Mountain coal beds. Am. Jour. Sci., 2nd ser., vol.

45, pp. 101-102, 1868.

5a. Remarks on the geological formations along the eastern margins of the Rocky Mountains. Am. Jour. Sci., 2nd ser., vol. 45, pp. 322-326, 1868.

128 BIRLIOQHAPHY OF COLORADO aBOLOQY

HaydexL, F. V.— Continued.

5. Oeoiaphy of the Missouri valley. Ha.vden Surv., 2nd

Ann. Kept., pj). 67-107, 1868.

Brief description of occurrence and quality of Colo- rado coals and iron ore, pp. 77-80. Grypsum in Red beds on eastern slope, p. 82. Placer gold In North Platte River, p. 83. Description of North Park, pp. 87-88.

6. Geological report. Harden Surv., 3rd Ann. Kept., pp.

103-261, 1869. Abstracts: Am. Nat., vol. 4, pp. 119

121, 1871 ; Am. Jour. Sci., vol. 49, pp. 258-63, 1873. CIi. 1. From Cheyenne to Denver. Ch. 2. Denver to Colorado City. Ch. 3. Colorado City to Spanish Peaks. Ch. 4. Fort Union to Mora. Ch. 5. Fort Union to Santa Fe. Ch. 6. Santa Fe to Placiere Mountains and return. Ch. 7. Santa Fe to Taos. Ch. 8. Taos to Fort Garland. Ch. 9. Fort Garland to South Park. Ch. 10. Trip to Middle Park. Ch. 11. Gold and silver mines of Colorado. Ch. 12. Review of leading groups. Mines and minerals of Colorado, by Persifor Frazer, jr. Agriculture of Colo- rado, by Cyrus Thomas. The report discusses the general geology of regions visited, and treats in considerable detail of the occurrence of various economic resources, including coal, oil, Iron, gold, silver, gypsum, salt, and mineral waters.

7. On the lignite beds of the ui)per Missouri, etc. Am.

Phil. Soc, Proc, vol. 10, pp. 300-307, 1869.

8. Sun pictures of Rocky Mountain scenery, with a descrip-

tion of the geographical and geological features of the gi-ent West. 150 pp., Illust., New York, 1870. (pp. 135-150 by J. S. Xewberry on ancient lakes of nvestem America.) Abstracts: Am. Jour. Sci., 2nd ser., vol. 50, pp. 125-127, 1870; Silliman's Journal. Mch., 1868.

9. Notes on the geology of Wyoming and (olorado, no. 2.

Am. Phil. Soc, Proc, vol. 11, new ser., p]). 25-56, 1871.

10. (leological survey of the Territories. Preliminary report

of the United States Geol. Surv. of Wyoming and portions of contiguous Territories. TTayden Surv., 2nd Ann. Rept, pp. 9-81, 1872.

11. Ignited States geological survey of the Territories, F. V.

Hayden in charge, profiles, sections, and other illus- trations designed to nccompany the final report of the chief geologist of the survey, and sketched under his direction by H. W. Elliot, 65 plates. New York,

Bibliography Of Colorado Geology 129

Hayden, F. V.— Continued.

12. Preliminary report. Hayden Surv., 4th Ann. Rept., pp.

1-188, Iliust., 1872. Abstract: Am. Nat, vol. 7, pp.

352-358, 1873.

Part L Ch. ]. From Cheyemie to Fort Fetterman. Ch. %. Fort Fetterman to South Pass. Ch. 3. South Pass to Fort Bridger. Ch. 4. Fort Bridger and the Uinta Mountains. Ch. 5. From Fort Bridger to Uinta Moun- tains, Henry's Fork, Green River, and Brown's Hole to Green River station. Ch. 6. From Green River station, via Bridger's Pass, to Cheyenne. Part II. Ch. 7. Gen- eral view of the geology of the Missouri Valley. Ch. 8. From Omaha to Cheyenne. Ch. 9. Over the first range. Ch. 10. The Laramie plains. Ch. 11. Westward to Bear River. Ch. 12. Bear River to Great Salt Lake Valley. Ch. 13. General review of the geology of the country from Omaha to Salt Lake Valley. Ch. 14. Observations on mines, analyses of coals, ores, and salts. The report deals mostly with Nebraska, Wyoming, and Utah, but occasional references are made to localities in Colorado.

13. Description of remains of vertebrata from Tertiary

formation of different states and Territories west of the Mississippi. U. R. Geol. Surv. of the Terr., vol. 1. pp. 227-264, 1873.

14. General report. Hayden Surv., 7th Ann. Kept., pp. 17-82,

1874. Abstract: Am. Nat., vol. 9, pp. 173-177, 1875. Ch. L Remarks on the survey, the geological features of the east slope of the Colorado (Front) range of the Rocky Mountains, from Cache la Poudre River south- ward to Pikes Peak. Ch. II. Colorado Mountains (Front Range), South Park, Park Range, Upper Arkansas Val- ley. Ch. III. Sawatch Range, morainal deposits of Taylor's Creek, Elk Mountains, etc. Ch. IV. From Elk Mountains to Middle Park, Middle Park. Discusses metamorphic and igneous rocks, sedimentary formations, structural features, economic products, and, briefly, the paleontology.

15. Section of the Lignitic beds at the Marshall mine, 1869.

Hayden Surv., 7th Ann. Kept., pp. 123-124, 1874. This Is part of Marvine's report.

16. Prefatory note by F. V. Hayden. Hayden Surv., Bull.,

vol. 1, no. 2, 1st ser., pp. 1-2, 1875.

Contains a discussion of the probable age of the Llg- group.

17. Note on some forms of erosion in eastern Colorado, with

heliotype illustrations. Hayden Surv., Bull., vol. 1, no. 3, 2nd ser., pp. 210-211, 1875.

(f)

Iso Bibliography Op Colorado Geology

Hayden, F. V. — Continued.

18. Notes on the surface features of the Colorado or Front

Range of the Rocky Mountains. Hayden Surv., Bull., vol. 1, no. 4, 2nd ser., pp. 215-220, Illust, 1875.

19. General report. Hayden Surv., 8th Ann. Rept., pp. 1-71,

Illust., maps, 1876. Abstract: Am. Jour. Sci., 3rd

ser., vol. 11, p. 496, 1876.

Letter to the Secretary. Ch. I. Brief history of the Lignitic group, first studied on the Upper Missouri, early views entertained by Meek, Newberry, and other paleon- tologists on the age of this group, the Lignitic group af the northwest believed to be continuous southward with the Colorado Laramie beds. Ch. II. The Lignitic group as examined at Canon City. Colorado Springs, north- ward to Cache la Poudre Creek, Monument Creek group, probable age of these groups. Appendix to Ch. II by H. T. West Ch. III. R6sum6 of the geology along the eastern base of the Front Range: Silurian, Carbonifer- ous, Triassic, Jurassic, and Cretaceous groups. Ch. IV. Ancient lake-basins, glacial lakes, morainal deposits of the Upper Arkansas River and along both flanks of the Sawatch Mountains. Ch. V. General view of the geog- raphy and geology of the Elk Mountains, eruptive gran- ites, rhyolites and dikes, erosion on a grand scale, local drift deposits. Ch. VI. Report on the geology of the northwestern portion of the Elk Range, by W. H. Holmes. The Roaring Fork synclinal. Geology of Soprls Peak and vicinity. Geology of the district drained by Rock Creek. The great fault-fold of the Elk Range.

20. Notes on the Lignitic group of eastern Colorado and por-

tions of Wyoming. Hayden Surv., Bull., vol. 1, no. 5, 2nd ser., pp. 401-411, 1875. Review : Am. Jour. Sci., 3rd ser., vol. 11, pp. 147-149, 1876.

21. Note on the ore-bearing rocks of Colorado. Am. Jour.

Sci., 3rd ser., vol. 12, p. 71, 1876.

22. Letter on general results. Hayden Surv., 9th Ann. Rept.,

pp. 1-28, 1877. Abstract: Am. Nat, vol. 10, pp.

161-162, 1876; Am. Jour. Sci., 3rd ser., vol. 14, pp.

420422, 1877.

Outlines the plan of work, gives notes on the geology of southern and southwestern Colorado, and briefly de- scribes cliff dwellings of southwestern Colorado.

23. Report, letter to the Secretary of the Interior. Hayden

Surv., Mon. 7, pp. I-IX, 1878.

BIBLIOGBAPHY OF COLORADO GBOLOOY ISl

Hayden, P. V. — Continued.

24. Remarks on the geological fonnations along the eastern

margins of the Rocky Mountains. Hayden Surv., Tin- classified Kept, no. 16, pp. 13-16, 1878; Am. Jour. Sci, 2nd ser., vol. 45, pp. 322-326, 1868.

25. Letter on general results. Hayden Surv., 10th Ann. Bept,

pp. XIII-XXIX, 1878.

26. The work of the U. S. (Geological and Geographical Survey

of the Territories during the season of 1877. Smith.

Inst, Ann. Kept, 1877, pp. 55-67, 1878.

Brief notes on the geology and .paleontology of Colo- rado.

27. Wasatch group. Am. Nat., vol. 12, p. 831, 1878.

28. Colorado and Nebraska geological formation. Macfar-

lane's Am. GeoL Rwy. Guide, pp. 162-164, 1879.

29. The Great West. Its attractions and resources, contain-

ing a popular description of the marvelous scenery, physical geography, fossils, and glaciers of this wonderful region, and the recent explorations in the Yellowstone Park, "the wonderland of America?, 87 pp., Bloomington, 111., Philadelphia, 1880.

30. Twin Lakes and Teocali Mountain, central Colorado, with

remarks on the glacial phenomena of that region. Am. Nat, vol. 14, pp. 858-862, 1880.

31. Geological and geographical atlas of Colorado and por-

tions of adjacent territory. U. S. Geol. and Geog. Survey of Terr.; U. S. Dept. Interior: First edition: 20 double sheets, folio. New York, J. Bien, 1877.

32. Geological and geographical Atlas of Colorado and por-

tions of adjacent territory. Second edition, with same contents as first edition. New York, J. Bien.

Hayes, C. W.

1. The coal fields of the United States. U. S. Geol. Surv.,

22nd Ann. Kept., pt. 3, pp. 1-24, map, 1902.

2. The State Geological Surveys of the United States. U. S.

Geol. Surv., Bull. 465, pp. 24-29, 1911.

Hayes, C. W., and Emmons, S. F.

1. Contributions to economic geology, 1902, 1903, 1904. See Emmons, S. F., and Hayes, C. W.

132 Bibliography Of Colorado Geology

Hayes, C. W., and Lindgren, W.

1. CJontribution to economic geology, pt. 1, 1907. U. S. Qeol.

Surv., Bull. 340, Illiist., 1908.

Ck)ntains bibliography of economic products.

Hazelhnrst, O. F.

1. Cripple Creek mining district. E. and M. J., vol. 70, pp. 454-455, 545-546, 577-578, 605, 635-630, 669-670, Illnst.. map, 1900.

Headden, William P.

1. Note on columbite. Colo. Sci. Soc, Proc, vol. 2, pt. 1, p.

31, 1886.

Gives analysis of mineral from Turkey Creek, Jeffer- son County.

2. Notice of a thin bed of infusorial earth in West Denver.

Colo. Sci. Soc, Proc, vol. 2, p. 183, 1888.

3. Mineralogical notes. Colo. Sci. Soc, Proc, vol. 7, pp.

141-150, 1903.

Description of native tellurium and tellurite from Gunnison and Boulder counties.

4. Significance of silicic acid in waters of mountain streams.

Am. Jour. Sci., 4th ser., vol. 10, pp. 169-184, 1903.

Discusses the composition of waters of Colorado streams and springs and gives analyses.

5. The Doughty springs, a group of radium-bearing springs.

Delta County. Am. Jour. Sci., 4th ser., vol. 19, pp. 297-309, 1905. Abstract of paper read before Colo.

Sci. Soc, Jan. 18, 1905.

Describes the springs and gives analysis of the waters.

6. Mineralogical notes, no. 2. Colo. Sci. Soc, Proc, vol. 8,

pp. 53-70, 1905.

Describes the characters and composition of minerals from various localities: palladium, columbite. enargite. alunogen.

n. Some phosphorescent calcites from Fort Collins, Colo- rado, and Joplin, Missouri. Am. Jour. Sci., 4th ser., vol. 21, pp. 301-308,.! 906. Abstract: Mg. Jour., vol. 53, p. 359, 1906.

8. A study of some Colorado coals — a comparison of some coals from Boulder, Routt, and Delta Counties. Colo. Sci. Soc, Proc, vol. 8, pp. 281-300, 1907.

0. An examination of some coals from Routt County. Colo. Sci. Soc, Proc, vol. 8, pp. 257-280, 1907.

Bibliography Of Colorado Gbology 138

Headden, William P.— Continued.

10. Some mattes formed in melting zinc-box precipitates,

their composition and what it suggests. Colo. Sci.

Soc, Proc, vol. 8, pp. 349-362, 1907.

. Treatment of Cfrlpple Creek and Camp Bird ores.

11. Phosphorescent calcites. Min. Col., vol. 14, no. 2, pp.

21-22, 1907.

12. Meteoric iron from Currant Creek. Colo. Sci. Soc, Proc,

vol. 9, pp. 79-80, 1908.

13. The brown artesian waters of Costilla County, their rela-

tions to certain deposits of natron or soda, and what they teach. Am. Jour. Sci., 4th ser., vol. 27, pp. 305- 315, 1909.

14. Notes on some mineral springs. Colo. Sci. Soc, Proc, vol.

9, pp. 259-272, 1909.

Gives analyses and descriptive notes upon springs in Platte Canyon and in Delta County.

15. The occurrence and origin of nitrates in Colorado soils,

some of their effects, and what they suggest. Colo. Sci. Soc, Proc, vol. 10, pp. 99-122, 1911.

Henahen, T. B.

1. Report of Bureau of Mines, 1911-12. 12th Biennial Rept.

Bureau of Mines, 1911-12, 200 pp., 1913. Abstract :

Mg. Sci., vol. 65, p. 409, 1912.

Review of mining by counties for the period, and sum- mary of production of precious metals. Reports by deputy inspectors, and special articles as follows: ''Car- notite a supply of radium," by A. W. Forstall; "Gold dredging," Herman J. Reiling; "Golden Cycle mill," John T. Mllliken; "Liberty Bell mill, Telluride," W. H. Staver; "Portland mill, Victor," T. B. Crowe; "Welling- ton mill, Breckenridge," R. M. Henderson; "Stratton's Independence mill," Philip Argall: "Argo mill, Idaho Springs," A. H. Roller; "The experiment ore dressing and metallurgical plant of the Colorado School of Mines," Victor C. Alderson; "Electric pumping plant, Smuggler mine. Aspen," C. E. Anderson; "Electric pumping plant. Golden Cycle mine, Victor," J. T. Milliken ; "The mineral springs of Colorado," Thomas Tonge.

Heilprin, Angelo.

1. The stone forest of Florissant. Pop. Sci. Monthly, vol.

49, pp. 479-484, Illust., 1896.

A popular description of the silicifled trees at Floris- sant and conditions of burial.

134 Bibliography Of Colorado Geology

Heimberger, J. 0.

1. A half year in the Leadville district, 1901. E. and M, J., vol. 74, p. 48, 1902.

Henderson, Charles W.

1. Colorado: gold, silver, copper, lead arid zinc in the

western states. U. S. Qeol. Surv., Min. Res. 1908, pt,

1, pp. 360-405, 1909.

Summary of production, and review by counties.

2. Colorado: gold, silver, copper, lead and zinc in the

western states. U. S. Geol. Surv., Min. Res. 1909, pt.

1, pp. 290-333, 1910.

Summary of production, and review by counties.

3. Report of the Poverty Gulch mine. Mines and Minerals,

vol. 31, pp. 586-588, Illust., 1911.

4. Colorado : gold, silver, copper, lead and zinc. U. S. Geol.

Surv., Min. Res. 1910, pt. 1. pp. 384-446, 1912.

Includes summary of production, general discussion of mining conditions, and description of mines by counties.

5. Gold, silver, copper, lead and zinc in Colorado. U. S.

Geol. Surv., Min. Res. 1911, pt. 1, pp. 505-569, 1912.

Henderson, Junius.

1. The overturns in the Denver basins. Jour. Geol. vol. 11,

pp. 584-586, Illust., 1903 ; Univ. Colo. Studies, vol. 1,

pp. 345-347, Illust., 1904; Mg. Rept, vol. 49, p. 191,

Illust., 1904.

Gives an explanation of the overturning of strata in this region.

2. The Arapahoe glacier in 1903. Jour. Geol., vol. 12, pp.

30-33, Illust, 1904.

Compares the status of the Arapahoe glacier in 1903 with that of 1902.

3. Paleontology of the Boulder area. Univ. Colo. Studies,

vol. 2, pp. 95-107, 1904.

Gives lists, with notes on their occurrence and char- acter, of fossils found in formations of Cretaceous age in the Boulder area.

4. Extinct glaciers of Colorado. Univ. Colo. Studies, vol.

3, pp. 39-44, 1905.

Discusses the evidences of former glaciation in Colo- rado.

5. Arapahoe glacier in 1905. Jour. Geol., vol. 13, p. 556,

Bibliography Of Coix>Bado Geology 135

Hendenon, Junius — Continued.

6a. A Colorado glacier. Harper's Monthly, vol. 112, pp. 609-614, 1906. Review: Review of Reviews, March, 1906, p. 375.

6. The Tertiary lake basin of Florissant, Colorado. Univ.

Colo. Studies, vol. 3, pp. 145-156, Illust, 1906.

Gives an account of the origin and character of the Florissant formation of Colorado, notes upon the physio- graphic and geologic history, and a bibliography.

Topographic development of Chalk Bluffs and Pawnee Buttes. Colo. Sci. Soc., Proc, vol. 8, pp. 247-256, Illust., 1907.

8. {Scientific expedition to northeastern Colorado. Paleon-

tology. Account of collections made. Univ. Colo.

Studies, vol. 4, pp. 149-152, 1907.

Gives notes upon various fossils and the localities from which obtained and lists of the species identified.

9. The sandstone of Fossil Ridge in northern Colorado and

its fauna. Univ. Colo. Studies, vol. 5, pp. 179-192,

Illust., 1908.

Discusses the stratlgnraphlc position and evidences for its correlation with the Hygiene sandstone of the Boul- der district

10. The Foothills formations of north central Colorado. Colo.

Geol. Surv., 1st. Rept., pp. 145-188, 1909.

11. The Red Beds of northern Colorado. Jour. Geol., vol.

16, pp. 491-492, 1908.

Discusses the stratigraphic position and correlation of the Red Beds of Colorado, which are determined as Car- boniferous.

12. New species of Cretaceous invertebrates from northern

Colorado. U. S. Nat. Mus., Proc, vol. 34, pp. 259-264, Illust, 1908.

13. Scientific expedition to northwestern Colorado in 1909.

Itinerary, topography, and geology. Univ. Colo. Studies, vol. 7, pp. 101-112, Illust., 1910.

14. Fossil invertebrates from northwestern Colorado. Univ.

Colo. Studies, vol. 7, pp. 146-149, 1910.

Gives lists of fossils obtained from the Mancos and Mesa Verde formations of the Cretaceous of northwestern Colorado.

16. Extinct and existing glaciers of Colorado. Univ. Colo.

Studies, vol. 8, pp. 33-76, Illust., 1910.

136 Bibliography Of Colorado Gboloqt

Hendenon, Junius, Orout, F. F., and Worcester, P. G.

1. Reconnaissance of the geology of the Babbit Ears Re- gion, Routt, Grand and Jackson counties, Colorado. See Grout, F. F., Worcester, P. G., and Henderson, Junius.

Henning, Earl L.

1. Streifziige in den Rocky Mountains. Der Mittlepark

und der Gore Canyon. Globus, Bd. 92, pp. 25-299

46-49, 101-107, Illust., 1907; Bd. 93, pp. 312-318,

must., 1908.

Describes excursions in the Rocky Mountains in Colo- rado. Includes notes on physiographic features and the geology.

2. Der Camotite. (Occui'rence in Colorado.) Globus, Bd.

93, pp. 155-157, 1908.

3. Streifziige in den Rocky Mountains. IV. Morrison und

die Morrisonformation. Globus, Bd. 96, pp. 344-349, must., 1909.

4. Streifziige in den Rocky Mountains. V. Der Clear Creek

Districkt. Globus, Bd. 98, pp. 328-333, 343-348, 359-

362, must., 1910.

Describes the geology and economic resources of the Clear Creek district.

Henrich, Carl.

1. The ore deposits of Leadville. E. and M. J., vol. 27, p.

125, and cont., 1879 ; Sci. Am. Suppl., vol. 7, no. 167, p. 2658, 1879.

2. Notes on the geology and on some of the mines of Aspen

Mountain, Pitkin County, Colorado. A. I. M. B., Trans., vol. 17, pp. 156-206, 1889.

Henry, Carl D.

1. The white country granite of West Sugar Ix)af or Bald

Mountain, Boulder County. Colo. Sci. Soc, Proc,

vol. 7, pp. 112-116, 1903.

Describes the occurrence, the megascopic, and micro- scopic characters, and the composition of this rock.

Hering, Rudolph.

1. The use of asphalt for reservoir linings. Denver reser- voir. Eng. Rec, vol. 33, pp. 59-60, 1895.

Bibliography Of Colorado Geology 137

Herricky B. L.

1. Cripple Creek rejuvenated. Mines and Minerals, vol. 28,

pp. 278-280, 1908.

Discussion of high grading, leasing system, mill war. treatment of low grade ore of the dumps.

2. Bontt County, coals. Mines and Minerals, vol. 29, pp.

230-234, must., 1908.

3. The Alice mine. Fall River district. Mines and Minerals,

vol. 29, pp. 294-296, 1909.

Hess, Frank L.

1. Tellurium, tungsten, nickel, cobalt, etc. U. S. Qeol.

Surv., Min. Res. 1908, pt. 1, pp. 719-749, 1909.

Discussion of tellurium deposits of Cripple Creek, tungsten of Boulder County, vanadium on La Sal and Roc creeks, and in Rio Blanco County, Routt County, San Miguel, and Boulder; uranium in Gilpin County, and tantalum near Cailon City.

2. Tungsten, uranium, vanadium. U. S. Qeol. Surv., Min.

Res. 1909, pt. 1, pp. 577-581, 584-587, 1911.

3. Bismuth, tungsten, vanadium, tantalum, arsenic. U. S.

Geol. Surv., Min. Res. 1910, pt. 1, pp. 729, 734, 738; pt. 2, p. 699, 1912.

4. Vanadium deposits of Colorado, Utah and New Mexico.

U. S. Geol. Surv., Bull. 530, pp. 142-156, Illust., 1913. Notes on the vanadium deposits near Placerville.

5. Tungsten, vanadium, uranium, molybdenum, bismuth. U.

S. Geol. Surv., Min. Res. 1911, pt. I, pp. 94V955, 1912. Bibliography, pp. 961-962. Bismuth reference, p. 976. Abstract: Mg. Sci., vol. 66, pp. 119-121. Illust, 1912.

Hewett, G. C.

1. The northwestern Colorado coal region. A. I. M. E., Trans., vol. 17, pp. 375-380, 1889.

Hidden, W. E.

1. Mineralogical notes. Am. Jour. Sci., 3rd ser,, vol. 29,

pp. 249-251, 1885.

Contains descriptions of phenacite, xenotime, and fayalite (?) from near Pikes Peak.

2. Contributions to mineralogy' ; with crystallographic notes

by A. Des Cloizeaux. Am. Jour. Sci., 3rd ser., vol.

32, pp. 204-211, Illust., 1886.

Contains a description of phenacite from Florissant

138 Bibliography Of Colorado Geology

Hidden, W. E.— Continued.

3. Remarkable discovery of bastn&site and tysonite. Am. Jour. Sci., 3rd ser., vol. 41, p. 439, 1891.

Brief description of specimens from Pikes Peak reon.

Hidden, W. E., and Mackintosh, J. B.

1. On the composition of the fayalite from Cheyenne

Mountain. Am. Jour. Sci., 3rd ser., vol. 41, p. 439,

Brief description and analysis.

HiU, B.

1. Natural gas. U. S. Geol. Surv., Min. Res. 1908, pt. 2,

p. 342, 1908 ; Min. Res. 1910, pt. 2, p. 299, 1912.

Production of 1908, chiefly from Boulder.

HiU, J. M.

1. Notes on the economic geology' of southeastern Gunnison

County. U. S. Geol. Surv., Bull. 380, pp. 21-40, Illust.,

map, 1909.

Discussion of general geology of the district, descrip- tion of mining districts: Cross Mountain, Tincup, Gold Brick, Quartz Creek, Gold Basin, Green Mountain, Coche- topa. Box Canyon, Tomichi.

Hill, J. M., and Lindgren, W.

1. The mining districts of the western United States with a geological introduction by W. Lindgren. U. S. Geol. Surv., Bull. 507, 309 pp., Illust., 1912. A bibliography of the various districts.

HiU, L. C.

1. Report on present appliances of electricity to mining in Colorado. Min. Ind. and Trad., Vol. 12, p. 60, cont.,

Hill, N. P.

1. Pitchblende and tellurium-gold oi'es in (Colorado. Am. Jour. Sci., 3rd ser., vol. 5, pp. 386-387, 1873.

Notes the occurrence of this mineral near Central City.

Hill, Robert T.

1. Geolog> of parts of Texas, Indian territory and Arkansas adjacent to Red River. Geol. Soc. Amer., Bull., vol. 5, pp. 297-338, Illust., 1894. Abstract: Am. Jour.

Bibliography Of Colorado Geology 181>

Hill, Robert T.— Continued.

Sci., 3rd ser., vol. 47, p. 141, 1894; Am. Geol., vol.

13, pp. 208-209, 1894.

Describes the physiography of the region. Gives a list of Cretaceous, Tertiary, and Pleistocene formations and their subdivisions, whose outcrops at different locali- ties are described. Gives lists of fossils found at certain horizons, discusses the oscillations of land and sea, and includes the author's conclusions as to the Cretaceous section of the region. Plate 12 contains a geologic map and cross section.

2. Artesian water in the arid region. Pop. Sci. Monthly,

vol. 42, pp. 599-611, Illust, 1893.

Contains description of the conditions in eastern Colo- rado and in San Luis Park.

Hillebrand, W. F.

1. On an interesting variety of lollingiteand other minerals.

Am. Jour. Sci., 3rd ser., vol. 27, pp. 354-357, 1884;

Colo. Sci. Soc, Proc, vol. 1, pp. 46-57, Illust, 1884. Describes crystallographic and chemical characters of luUingite from Gunnison County, and chemical charac- ters of cosalite from La Plata County. A mineral from Halls Valley, and httbnerite from Ouray County.

2. Mineralogical notes. Colo. Sci. Soc, Proc, vol. 1, pj).

112-123, 1884.

Contains description and analysis of zinckenite from Red Mountain and a note on melon ite from Boulder County.

3. On zunyite and guitermanite, new minerals from Colo-

rado. Colo. Sci. Soc, Proc, vol. 1, pp. 124-132, 1884. Abstract: Am. Jour. Sci., 3rd ser., vol. 29, pp. 340

341, 1885.

Describes the physical and chemical characters of these two minerals from the Zuni mine, Silverton.

3a. Chemistry of Leadville district. See Emmons, 9.

4. Mineralogical notes. Colo. Sci. Soc, Proc, vol. 3, pp.

38-47, Illust., 1888.

Describes samarskite (?) and an ill-defined zirconium mineral from Devils Head Mountain, Douglas County.

5. On the occurrence of nitrogen in uraninite and on the

composition of uraninite in general. U. S. Geol.

Surv., Bull. 78, pp. 43-79, 1890; Am. Jour. Sci., 3rd

ser., vol. 40, pp. 384-394, 1890.

Contains analysis of Colorado uraninite.

140 Bibliography Of Colorado Gbology

Hillebrand, W. P.— Continued.

6. Chemical composition of calaverite from Cripple Creek.

U. S. Geol. Surv., 16th Ann. Rept., pt. 2, pp. 133-135,

Describes the occurrence of the mineral and its chem- ical composition.

7. Calaverite from Cripple Creek. Am. Jour. Sci., 4th ser.,

vol. 1, pp. 128-131, 426, 1895.

Gives a chemical analysis of material from the Cripple Greek mines, which shows the presence of calaverite. Includes crystallographic notes by S. L. Penfield.

8. Mineralogical notes: analyses of tjsonite, bastn&site,

covellite, prosopite, jeffersonite, etc. Am. Jour. Sci.,

4th ser., vol. 7, pp. 51-57, 1899; Am. Geol., vol. 23,

pp. 324-325, 1899.

Gontains descriptions and analyses of tysonite and bastniisite from Gheyenne Mountain.

9. Mineralogical notes: melonite, coloradoite, petzite, hess-

ite. Am. Jour. Sci., 4th ser., vol. 8, pp. 295-298, 1899.

Review : Am. Geol., vol. 24, p. 321, 1899.

Description of coloradoite (?) and descriptioil and analysis of petzite from the Norwegian mine.

10. Mineralogical notes. U. S. Geol. Surv., Bull. 167, 1900.

Description of calaverite from Gripple Greek, pp. 57-60, and tysonite and bastniisite, pp. 64-66.

11. Distribution and quantitative occurrence of vanadium

and molybdenum in rocks of the United States. U. S.

Geol. Surv., Bull. 167, pp. 49-55, 1900.

Vanadium and molybdenum in porphyry, La Plata County; syenite-lamp rophy re, Prowers Gounty; phono- lite. Cripple Creek; andesite, El Paso Gounty; nepheline syenite. El Paso Gounty; diorlte. La Plata Gounty; camptonite (?), San Miguel County; dlorite porphyry. La Plata Mountains; rhyolite, San Miguel County.

12. Emmonsite ( ?) from a new locality. Am. Jour. Sci., 4th

ser., vol. 18, pp. 433-434, 1904.

Describes the occurrence, optical, and other characters, and chemical composition of a mineral provisionally regarded as emmonsite, from Cripple Greek.

13. Two tellurium minerals from Colorado. T '. S. Geol. Surv.,

Bull. 262, pp. 55-57, 1905.

Describes occurrence and composition of emmonsite (?) and tetradymite.

Bibliography Of Colorado Geology 141

Hillebrand, W. P., and Allen, E. T.

t. Comparison of a wet and crucible-fire methods for the assay of gold tellnrides with notes on the errors occurring in the operations of fire assaying an(J part- ing. U. S. Geol. Surv., Bull. 253, 31 pp., 1905; Mg. Kept., vol. 51, pp. 164-166, 1905.

Hillebrand, W. P., and Clarke, P. W.

1. Analyses of rocks with a chapter on analytical methods; laboratories of U. S. Geological Survey, 1880-1896. See Clarke, P. w"., and Hillebrand, W. P.

Hillebrand, W. P., and Cross, Whitman.

1. On the minerals, mainly zeolites, occurring in the basalt

of Table Mountain, near Golden.

2. Notes on some interesting minerals occurring near Pikers

Peak.

3. On minerals of the cryolite group, recently found in

Colorado.

4. Contributions to the mineralogy of the Rocky Mountains.

See Cross, Whitman, and Hillebrand, W. P.

Hillebrand, W. P., and Bansome, P. L.

1. On camotite and associated vanadiferous minerals in

western Colorado. Am. Jour. Sci., 4th ser., vol. 10,

pp. 120-144, Illust, 1900.

Contains a description of the occurrence of uranium and vanadium ores of the region, and of the microscopic and chemical character of camotite and associated min- erals. Contains notes on the carnotite ores by G. P. Merrill.

2. On carnotite and associated vanadiferous minerals in

western Colorado. U. S. Geol. Surv., Bull. 262, pp.

9-31, 1905.

Describes the occurrence, character, origin, and chemi- cal composition.

Hills, Pred.

1. The official manual of the Cripple Creek district. VqI. 1,

Colorado Springs, 1900.

Gives organization, holdings, and equipment of each mining company in the district.

142 Bibliography Of Colorado Gboloot

Hills, B.C.

1. Note on the occurrence of fossils in the Triassic and

Jurassic beds near San Miguel. Am. Jour. Sci., 3rd ser., vol. 18, p. 490, 1880.

2. Jura-Trias of southwestern Colorado. Am. Jour. Sci.,

3rd ser., vol. 23, pp. 243-244, 1882.

Brief description of the rocks and fossUs.

3. Ore deposits of Summit district, Rio Grande County.

Colo. Sci. Soc, Proc, vol. 1, pp. 20-36, 1883. Abstract

with comments by S. F. Emmons, E. & M. J., vol. 35,

pp. 332-334, 1883.

Describes the rocks, the occurrence and character of the ore bodies, and discusses the formation of the ores.

4. Extinct glaciers of the San Juan Mountains. Colo. Sci.

Soc, Proc, vol. 1, pp. 39-46, 1883 ; Am. Jour. Sci., 3rd ser., vol. 27, pp. 391-396, 1883.

5. Kaolinite from Red Mountain. Am. Jour. Sci., 3rd ser.,

vol. 27, p. 472, must, 1884.

6. Remarks on the occurrence of coal in the Carboniferous

formation at Aspen and Glenwood Springs. Colo. Sci. Soc, Proc, vol. 2, pp. 25-26, 1886.

7. Notes on the recent discovery of natural gas in Pitkin

County. Colo. Sci. Soc, Proc, vol. 2, pt. 2, pp. 106- 107, 1886.

8. Circulation of water through the strata of the upper

Cretaceous coal measures of Gunnison County. Colo. Sci. Soc, Proc, vol. 2, pt. 2, pp. 127-133, 1886.

9. Preliminary notes on the eruptions of the Spanish Peaks

region. Colo. Sci. Soc, Proc, vol. 3, pp. 24-34, Illust.,

Describes the structural geology of the region, the character of the rock, the form of eruptions, and effects on the sedimentary rocks.

10. The recently discovered Tertiary beds of the Huerfano

River basin. Colo. Sci. Soc, Proc, vol. 3, pp. 148-164, Illust., 1889.

11. Address: The field for original work on the Rocky

Mountains. Colo. Sci. Soc, Proc, vol. 3, pp. 168-184,

Discusses geological, paleontological, and mineralogical work done in Colorado, and suggests opportunities for farther work.

Bibliography Of Colorado Gbolog7 148

HiUfly B. C. — Continued.

12. Etched beryls from Mount Antero. Colo. Sci. Soc, Proc,

vol. 3, pp. 191-192, Illust., 1889.

Describes etching and crystal habit.

13. Additional note on the Huerfano beds. Colo. Sci. Soc,

Proc, vol. 3, pp. 217-223, 1890.

14. Additional notes on the eruptions of the Spanish Peaks

region. Colo. Sci. Soc, Proc, vol. 3, pp. 224-227,

15. Walseiiburg folio. U. S. Geol. Surv., Geol. Atlas of U. S.,

folio 68, 1900.

Describes the geography of the region, the occurrence and character of the Archean, Carboniferous (?), Jura- Trias, Cretaceous, Tertiary, and igneous rocks; the geo- logic structure and the economic resources. Includes topographic, geologic, structural section and artesian water maps.

16. Fulgerite from the Spanish Peaks. Colo. Sci. Soc, Proc,

vol. 3, pp. 280-287, 1891.

Describes the effect produced on the rock by lightning.

17. Orographic and structural features of Rocky Mountain

geology. Colo. Sci. Soc, Proc, vol. 3, pp. 362-458,

Illust, 1891.

Archean disturbances, Paleozoic disturbances, post- Paleozoic movement, Mesozoic disturbances; Inter- Triassic, Jurassic, early Cretaceous, late Cretaceous, and Laramie movements. Cenozoic disturbances; post- Laramie beds; post-Laramie elevation, early Eocene eruptions, post-Bridger movement Post-Eocene move- ment. Eocene and Miocene drainage, late Eocene and Miocene eruptions, post-Miocene movement, post-Pliocene movement, origin of Green River, Pliocene and later eruptions, Quaternary movement Summary of Cenozoic events, orographic, and structural effects.

18. I>enver artesian basin. Colo. Sci. Soc, Proc, vol. 4, p. 6,

In discussion of paper read by P. H. van Diest "On the artesian wells of Denver."

19. Remarks on the classification of the Huerfano Eocene.

Colo. Sci. Soc, Proc, vol. 4, pp. 7-9, 1891.

Refers to the author's former classification of these beds and discusses the evidences on which this classiflcar tion is based.

144 Ribliogkaphv Of Colorado Geology

Hills, R. C— Continued.

20. Types of past eruptions in the Rocky Mountains. Colo.

Sci. Soc, Proc, vol. 4, pp. 14-32, 1891.

Includes brief remarks on the pre-Tertlary and Ceno- zoic eruptions in this region. Describes the structure of the Sangre de Cristo, Henry, and Plata Mountains and the Spanish Peaks as being formed by intrusive bodies, and of the San Juan Mountains, the White River Plateau, Raton, and Uinkaret Mountains and Taylor Mountain as being made up of extrusive bodies. Gives table of intrusive, extrusive, and tufaceous rocks and describes briefly their distribution.

21. Post-Luraniie beds of Middle Park. Colo. Sci. Soc, Proc,

vol. 4, pp. 213-214, 1891.

In discussion of paper by Whitman Cross on same subject.

22. Coal fields of Colorado. U. S. Geol. Surv., Min. Res.

1892, pp. 319-365, 1893.

The coal measures are of Upper Cretaceous age. The character of the coal shows great variations dependent on certain structural conditions and on the intrusion of eruptive masses. Describes the geographic and strati- graphic features of the various coal fields and gives analyses of the coals.

24. Elmoro folio. U. S. Geol. Surv., Geol. Atlas of U. S.,

folio 58, 1809.

Describes the physiography, the occurrence, and char- acter of the Cretaceous, Neocene, and Igneous rocks, and the occurrence of coal and other economic resources. Includes topographic, geologic, structural sections, and artesian water maps.

25. Spanish Peaks folio. V. S. Geol. Surv., Gool. Atlas of

U. S., folio 71, 1901.

Describes the occurrence and character of the Creta- ceaus. Eocene, and Neocene strata, the geologic struc- ture, the igneous rocks, and the occurrence of coal and artesian water.

2Cy. The Trinidad or Elmoro coal region. Mines and Min- erals, vol. 23, p. 254, 1903.

27. The Walsenburg coal district. Mines and Minerals, vol.

24, i)p. 339-341, llhist., 1904.

28. Eocene and earlier beds of the Huerfano basin, and their

relation to the Cretaceous. Science, new ser., vol. 15,

p. 417, 1902.

Discusses the correlation of the beds.

Bibliography Ob' Colorado Geology 145

HillB, R. C— Continued.

29. Geology of Cripple Creek district. In discussion of paper bv Whitman Cross on same subject. See Cross, Whitman.

Hills, Victor G.

1. Water in the mines of Cripple Creek. E. and M. J., vol.

76, pp. 117, 195-197, 1903.

A record of 39 mines in tabular form.

2. Tungsten miniufi: and milling in Colorado. Colo. Sci.

Soc, Proc, vol. 9, pp. 135-153, Illust., 1909. Abstract : Mg. World, vol. 30, pp. 102M024, Illust, 1909.

Hinderlider, M. C, Giles, J. M., and Hoyt, J. C.

1. Report of progress of stream measurement for the year 1905. Lower Mississippi drainage. *U. S. Geol. Surv., W. S. Paper 173, 105 pp., Illust., 1906.

Measurements on Arkansas and Purgatory rivers.

Hinderlider, M. C, and Hoyt, J. C.

1. Report of progress of stream measurement for the year

1904. U. S. Geol. Surv., W. S. Paper 131, pt. 8, 203 pp., Illust., 1905.

Platte and Arkansas rivers.

Hinderlider, M. C, Hoyt, J. C, and Babb, C. C.

1. Report of progress of stream measurement for the year

1905. See Babb, C. O., Hinderlider, M. C and Hoyt, J. C.

Hinderlider, M. C, and Swendsen, O. L.

1.. Report of progress of stream measurement for the year 1905, on the Colorado River above Yuma. V. S. Geol. Surv., W. S. Paper 175, 119 pp., Illust., 1906.

Yampa, Elk, Fortification, Williams, Milk, White, Mar- vine, Grand, Fraser, Williams Fork, Troublesome, Muddy. Blue, Eagle, Gunnison, Cimarron, Uncompahgre, San Juan, La Plata, and Animas rivers.

Hinderlider, M. C, Swendsen, G. L., and Chandler, A. E.

1. Report of progress of stream measurement for the year 1904. U. S. Geol. Surv., W. S. Paper 1.38, pt. 10, 384 pp., Illust, 1905.

Colorado River above Yuma.

146 Bibliography Of Colorado Obologt

Hinderlider, M. C, Meeker, B. J., and Tobish, Theodore.

1. Destructive floods in the United States, 1905. See Meeker, R. J., Tobish, Theodore, and Hinderlider, M. C.

Hinman, Russell.

1. Map of Colorado for the eclectic geographies. Bragg and Company, 1881. Col. x 112 inches. Cincin- nati, L. B. Folger, sc. Van Antwerp.

Hirschberg, Charles A.

1. Economic tunnel driving in Colorado. Mg. and Eng.

World, vol. 35, p. 473, 1911.

Lucania tunnel near Fall River, Idaho Springs.

Hitchcock, Charles H.

1. Geological map of the United States and part of Canada. Compiled to illustrate the scheme of coloration and nomenclature recommended bv the International Congress. A. I. M. B., Trans., vol. 15, pp. 465-488, 1887. Map 17 by 27 inches.

Hitchcock, Charles H., and Blake, W. P.

1. Geological map of the United States. Statistics of mines and mining in the States and Territories west of the Rocky Mountains, 5th Rept., R. W. Raymond, 1873; Statistical atlas of the United States, based on the results of the 9th Census, 1870, by F. A. Walker. Illust., folio, Washington, 1874; Petermann's Mitt- heilungen, vol. 21, plate 16, 1875; Special report of Smithsonian Inst, for Centennial, 1876; Atlas of the U. S. and the world, by Gray, folio, Philadelphia, 1877. Reproduced (probably) by F. Ratzel, "die Vereinigten Staaten von Nord-Amerika," vol. 1, Munchen, 1878. Review: Am. Jour. Sci., 3rd ser., vol. 6, pp. 64-66, 1873.

Hitchcock, Edward.

1. Outline of the geology of the globe, and of the United States in particular, with two geological maps and sketches of characteristic American fossils. Boston, 1853. Second edition, 1854.

Hobart, F.

1. Lead, 1894. Min. Ind., vol. 3, pp. 4(3-418, 1895.

Bibliography Of Colorado Gboloot 147

Hobbii W. H.

1. Ooldschmidtite a new mineral. Am. Jour. Sci., 4th ser.,

vol. 7, pp. 357-364, Illust, 1899. Review: Am. Geol.,

vol. 24, p. 182, 1899.

Description and analysis of a mineral from Cripple Creek. See note: Am. Jour. Sci., 4th ser., vol. 10, p. 426.

2. Epsomite and alunogen, from the Cripple Greek district.

Am. Geol., vol. 36, pp. 184-185, 1905.

Gives analyses of these minerals by W. 0. Hotchkiss and R. M. Chapman.

Hodge, James L.

1. Conditions of mining in Colorado. Report of Director of

the Mint upon the production of precious metals in the U. S., 1900, pp. 100-138, 1901.

2. Colorado. Report of Director of the Mint upon the pro-

duction of the precious metals in the U. S. during the calendar year 1901, pp. 104-148, 1902.

Gives production of gold and silver by years, 1859-1901, with brief notes on the production and character of ores in different mining districts.

Hodge, James T.

1. On the Tertiary coals of the west. Hayden Surv., 4th

Ann. Rept., pp. 318-329, 1871.

Gives general description of western coals, and in- cludes more detailed description of occurrence of coal in northern Colorado.

Hodgson, Arthur.

1. Mint practice at Denver. Colo. Rch. of Mines Bull., vol.

1, pp. 61-65, 1900.

Condition of gold as received from the .different min- ing districts, process of refining, and amount of bullion operated on during the calendar year 1899, by counties.

Hoenes, Frank L.

1. The granites of Chaffee County. Mg. Sci., vol. 64, p. 40,

Hogartji Barry.

1. The andesite of Mount Sugar Loaf, Boulder County.

Colo. Sci. Soc, Proc, vol. 6, pp. 171-185, 1902.

Describes the occurrence, the megascopic, and micro- scopic characters and the composition of the rock.

148 Bibliogbaphy Of Colorado Gbolooy

Hole, Allen D.

1. Glacial geology of the Engineer Mountain quadrangle.

See Cross, Whitman.

2. Glaciation in the Telluride quadrangle. Jour. Geol., vol.

20, pp. 502-529, 605-639, 710-737, 1912.

Holibaugh, J. B.

1. The gold belt of Pitkin and Gunnison counties. Mines described. E. and M. J., vol. 62, p. 559, 1896.

HoUandi W. J.

1. Jurassic dinosaurs. Geol. Soc. Am., Bull., vol. 23, pp.

204-207, 1911.

F\)88ll8 from Canon City described.

HoUid Arthur.

1. Fossil Salvinias, including description of new species. A new fossil nelumbo from the Laramie group at Florence. Torr. Bot. Club, Bull., vol. 21, pp. 253-257,

307-310, 1894.

Describes and figures a leaf of Nelumbo laramiensls, n. sp.

'2. A fossil Liriodendron from the Laramie at \Vals<*u- burg, and its significance. Am. Geol., vol. 14, p. 203, 1894. Abstract : Am. Assoc. Adv. Sci., Troc, vol. 43, p. 225, 1895.

I )oKcription of new Tertiary fossil flower from Florissant.

Torreya, vol. 7, no. 9, pp. 182-184, Illust., 1907..

American fossil mosses, with description of a new species from Florissant. (See Britton and Hollick.)

4. A new genus of fossil Fagaceae from Colorado. Torre va.

vol. 9, no. 1, pp. 1-3, Illust., 1909.

Proposes the new generic name Fagopsis for the Planera loiigifolia Lesq.. from the Miocene shales of Florissant.

Hollick, Arthur, and Britton, Elizabeth G.

1. American fossil mosses, with description of a new sixcies from Florissant. See Britton, Elizabeth G., and Hollick, Arthur.

HoUister, 0. J.

1. The Mines of Colorado. Springfield, Mass., Sam Bowler and Company, 1867.

History of mining from 1852 to 1867, with description of mines in Gilpin, Clear Creek, Boulder, Park, Lake,

Bibliography Of Colorado Geology 149

HolliBter, 0. J. — Continued.

Summit, Middle Park, Upper Blue Riyer, Ten Mile, Snake River, Peru; and Montezuma to 1867. Geological history and geology of Colorado by William Denton and classification of minerals by J. Alden Smith.

Holmes, J. Garnett.

1. Soil survey of the San Luis Valley. U. S. Dept Agr., Bur. Soils, 5th Kept., 1903, pp. 1099-1117, 1904.

Holmes, J. Garnett, and Neill, N. P.

1. Soil survey of the Greeley area. U. S. Dept. Agr., Bur. Soils, 6th Kept, 1904, pp. 951-993, 1905.

Holmes, J. Garnett, and Bice, Thomas D.-

1. Soil survey of the Grand Junction area. U. S. Dept. Agr., Bur. Soils, 7th Kept., 1905, pp. 949-973, 1906.

Holmes, J. A., Campbell, M. B., and Parker, E. W.

1. Keport of operations of the coal testing plant of the U. S. Geological Survey at St. Louis, Mo., 1904. See Parker, E. W., Holmes, J. A., and Campbell, M. R.

Holmes, W. H.

1. Keport on the geology of the northwestern portion of the

Elk Kange. Hayden Surv., 8th Ann. Kept., pp. 59-71,

Illust., map, 1876.

The Roaring Fork synclinal. Geology of the district drained by Rock Creek. The great fault-fold of the Elk Range. This report is Ch. 6 of Hayden's report

2.* Keport as geologist of the San Juan division. Hayden

Surv., 9th Ann. Kept., pp. 237-276, Illust., maps, 1877.

General review of the district: orographic features. La Plata Valley, description of the sedimentary rocks with several sections and sketches. Metamorphic and eruptive areas, including a discussion of tnodes of intru- sion of the trachyte.

3. Keport: Ancient ruins of southwestern Colorado. Hay

den Surv., 10th Ann. Kept., pp. 381-408, Illust., 1878.

Ruined village of the Rio la Plata, Group of cave dwellings and towers on the Rio San Juan. Canyon of the Rio Mancos. Cliff-houses of the Mancos. Triple- walled tower. Ruins at "Aztec Springs." Ruin at Ojo Caliente, New Mexico. Pottery.

150 Bibliography Of Colorado Geology

Holmei, W. H. — Continued.

4. A notice of the ancient ruins of southwestern Colorado,

examined during the summer of 1875. Hayden Surv.,

Bull., vol. 2, no. 1, pp. 3-24, Illust, 1876.

Elssentially the same as report published in 10th Ann. Rept, pp. 381-408, 1878.

5. Sections of Jurassic beds. Hayden Surv., 7th Ann. Rept.,

pp. 99-100, 1874.

This is a part of Marvine's report as Assistant Geolo- gist directing Middle Park division.

6. Report on the geology of the Sierra Abajo and West San

Miguel mountains. Hayden Surv., 10th Ann. Rept.,

pp. 187-195, Illust., 1878.

Dolores Canyon, San Miguel Mountains, Bear River Mountains. Discusses topography and the stratigraphic and structural geology.

Holt, M. B.

1. Electricity in mining, as applied by the Aspen Mining and Smelting Company. A. T. M. E., Trans., vol. 20, pp. 316-324, 1891.

Hoover, Herbert C.

1. Mining geology of Cripple Creek. Mg. and Sci. Press,

vol. 73, pp. 237-238, 1896.

Synopsis of the report of Whitman Cross and R. A. F. Penrose.

2. Ore treatment at Kalgoorlie compared with cost of treat-

ment at Cripple Creek. The Economics of Mining. Compiled by T. A. Riokard. Pub. E. & M. J., 1905.

3. Geolog;v' of the Four-mile placer mining district. E. and

M. J., vol. 63, p. 510, 1897.

Describes the placer mines and discusses origin of gold.

Hosea, R. M.

1. Coal washing at Sopris. Coll. Eng., vol. 17, pp. 521-524,

Illust., 1896.

2. The Newcastle mines. Coil. Eng., vol. 17, pp. 377-382,

425-429, Illust., 1897.

Describes the character and occurrence of coal in these mines and methods of working them.

3. Anthracite in the Rockies. Mines and Minerals, vol. 18,

pp. 52-9-533, Illust.; vol. 19, pp. 7-9, Illust., 1898.

Bibliography Of Colorado Geology 161

Hoiea B. M. — Continued.

4. The Primero mines. Mines and Minerals, vol. 24, pp.

521-526, 1904.

5. Tercio and Cuatro mines. A description of the coal

washing and coking plants of the Colorado Fuel and Iron Co. Mines and Minerals, vol. 25, pp. 218-223, Illust., 1904.

6. Anthracite coal mining in Colorado. E. and M. J., vol.

82, pp. 399-402, Illust., 1906.

Floresta or Ruby deposits described.

7. A Colorado mountain reservoir. Mines and Minerals,

vol. 27, pp. 539-540, 1907.

Details of construction of, a large earth dam for "Sugar Loaf reservoir on Lake Fork of Arkansas River.' (Ab- stract of paper read before Western Society of Engi- neers.)

Hosker, B. B.

1. A note on the composition of natural sodium carbonate

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1. Geology of the Grayback mining district, Costilla County,

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33, pp. 147-151, Illust., 1912.

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vol. 33, pp. 223-224, Illust, 1912.

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Hovey, E. 0.

1. Archean-Potsdam contact in the vicinity of Manitou, by W. O. Crosby. Am. Geol., vol. 23, p. 92, 1899 ; Science, new ser., vol. 21, pp. 216-223, 1905. (Brief review of paper read before Geological Society of America, December, 1898.)

152 Bibliography Of Colobado Geology

Hovey, E. 0. — Continued.

2. The Guffey meteorite. Am. Mus. Jonr., vol. 9, no. 8, pp.

237-243, must., 1&09.

Records the discovery and describes the surface and composition of this slderite to which the name Guffey is given.

Howe, Ernest.

1. An occurrence of gi-eenstone schists in the San Juan

Mountains. Jour. Geol., vol. 12, pp. 501-509, 1904. Describes the occurrence of greenftone schists In the San Juan Mountains, discusses their age, and compares them with similar rocks from other localities.

2. Landslides in the San Juan Mountains, including a con-

sideration of their causes and their classification. U. S. Geol. Surv., Prof. Paper 67, 58 pp., lllust., 1909.

Howe, Ernest, and Cross, Whitman.

1. Glacial phenomena of the San Juan Mountains. Geol. Soc. Am., Bull., vol. 17, pp. 251-274, lllust., 1906.

Abstract: Science, new ser., vol. 23, pp. 306-307, 1906.

Describes the character, extent* and evidences of recent and older glaciation!

Howe, Ernest, Cross, Whitman, and Ransome, F. L.

1. Silverton folio. Geography and general geology of the quadrangle.

Howe, Ernest, and Cross, Whitman.

1. Topography and general geology of the Needle Mouu

tains quadrangle. 1. The Red Beds of Southwestern Colorado. See Cross, Whitman, and Howe, Ernest.

Howe, Ernest, Irving, J. D., and Cross, Whitman.

1. Description of Ouray quadrangle. See Cross, Whitman, Irving, J. D., and Howe, Ernest.

Howe, Ernest, Cross, Whitman, Irving, J. D., and Emmons, W. H. 1. Needle Mountains quadrangle. See Cross, Whitman, Irving, J. D., Emmons, W. II., and Howe, Ernest.

Howe, Herbert A.

1. The lOoth meridian in Denver and its mile high level. Colo. Sci. Soc, Proc, vol. 10, pp. 75-84, 1911.

Howe, J. L.

1. Bibliography of platinum metals. Smith. Inst., Misc. Col., vol. 38, 1897.

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Howell, E. E.

1. Belief map of I-adville mining district HoweH's Micro-

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2. Arkansas Drainage basin. Howell's Microcosm, Wash-

ington, D. C.

Howell, E. E., Gilbert, Q. K., and Marvine, A. R.

1. Map, part of Colorado. See Gilbert, G. K., Marvine, A. R., and Howell, E. E.

Hoyt, J. C.

1. Report of progress in stream measurements for the year

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Stream measurements of the South Platte, Cache la Poudre, Big Thompson, Arkansas, Rio Grande, Conejos, Clear Creek, St Vraln, Animas, Florida, Los Finos, Dolores, San Juan, Uncompahgre, Gunnison, Cimarron, Grand, White, and Marvine for 1903.

Hoyt, J. C, Giles, J. M., and Hinderlider, M. C.

1. Report of progress of stream measurement for the year 1905. See Hinderlider, M. C, Hoyt, J. C, and Giles, J. M.

Hoyt, J. C, and Hinderlider, M. C.

1. Report of progress of stream measurement for the year

1904. See Hinderlider, M. C. and Hoyt, J. C.

Hoyt, J. C, Babb, C. C, and Hinderlider, M. C. .

1. Report of stream measurement for the year 1905. See Babb, C. C, Hinderlider, M. C, and Hoyt, J. C.

Hoyt> J. C, and Taylor, T. U.

1. Report of stream measurement for the years 1904, 1905. See Taylor, T. U., and Hoyt, J. C.

Hoyt, J. C, and Wood, B. D.

. 1. Index to the hydrographic progress reports of the United States Geological Survey, 1888-1903. U. S. Geol. Surv., W. S. Paper, 119, 253 pp., 1905.

Hubbard, Geo. D.

1. Gold and silver mining and reduction processes as re- spouses to geographic conditions. Scottish Geog. Mag., vol. 26, pp. 449-466, 1910 ; vol. 27, p. 417, cont., 1911; Am. Geog. Soc, Bull., pp. 594-602, 1910; Geog. Soc. Phil., Bull., pp. 1-22, 1911.

154 Bibliography Of Colorado Obolooy

Hnene, F. B. von, and Lull, Richard S.

1. Neuschreibung des Originals von Nanosaurus agilis

Marsh. Neues Jahrb., Bd. 1, Heft 3, pp. 134-144, must., 1908.

2. On the Triassic reptile Hallopus victor Marsh. Amer.

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Humphreys, A. A., and Warren, G. E.

1. Route near the 38th and 39th Parallels of north latitude.

Pacific R. R. Rept., vol. 1, ch. Ill, pp. 71-73, 1855.

Discussion of soil, water supply, topography, economic resources.

Hunt, T. Sterry.

1. On labradorite rocks in New Hampshire and Colorado.

Geol. Surv. New Hampshire, its progress during 1871, pp. 13-14, 1872.

2. The older rocks of western North America. Am. Assoc.

Adv. Sci., Proc, vol. 26, pp. 265-266, 1878.

3. On the geology of the Eozoic rocks of North America.

Boston Roc. Nat. Hist, Proc, vol. 19, pp. 275-279,

4. Special report on the trap dikes and Azoic rocks of

southern Pennsylvania. 2nd Geol. Surv. Penn., Re- port E, pp. VIII-XXI, 253, 1878.

Reference to Laurentian of the Rocky Mountains and the Wasatch Range.

4a. Geology, progress of, 1882. Smith. Inst., Ann. Rept 1882, pp. 325-345, 1883.

5. Paleozoic rocks of Colorado. Smith. Inst., Ann. Rept.

1882, pp. 337-338, 1884.

Quotes from S. F. Emmons' account of the geology of the Leadville district and compares formations with those found elsewhere.

6. The origin of crystalline rocks. Canada, Royal Soc,

Trans., vol. 2, sec. 3, pp. 1-67, 1885. Abstracts : Am. Jour. Sci., 3rd ser., vol. 28, pp. 72-74, 1884; Science, vol. 3, pp. 674-675, 1884.

Hurlburt, E. B.

1. On alunite from Red Mountain, Ouray County. Am.

Jour. Sci., 3rd ser., vol. 48, pp. 130-131, 1894.

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HntchiOBon, James.

1. First Biennial report of the metalliferous mine inspector

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Short account of mining by counties.

Hyatt, Alpheus. (Edited by T. W. Stanton.)

1. Pseudoeeratites of the Cretaceous. U. S. Qeol. Surv., Mon. 44, 351 pp., Illust, 1903.

Iddings, Joseph P.

1. On the origin of primary quartz in basalt. Am. Jour.

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Describes rocks from Elk Head Creek, fifteen miles from Hay den; Crescent and Whitehead peaks and Camel Mountain.

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1. On the widespread occurrence of allanite as an accessory constituent of many rocks. See Cross, Whitman, and Iddings, J. P.

Ihlseng, M. C.

1. Review of the mining interests of the San Juan region.

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156 Bibliography Of Colorado Geology

Ihlseng, M. C. — Continued.

67-80, 1888 ; Ann. Eept. to Governor, 1885, pp. 75-88, 3. Note on Lead vi lie. Colo. State Sch. Mines, Ann. Rept. 1887, pp. 29-45, 1887.

Ihne, P. W.

1. Graphite in the United States. Mg. Sci., vol. 60, p. 297,

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On page 345 the author describes deposits near Turret, Cha£Fee County.

lies, M. W.

1. Chemical and metallurgical consideration on the treat-

ment of Leadville ores. Am. Chem. Jour., vol. 3, p. 420, 1881; E. and M. J., vol. 30, pp. 156-157, cont., 1880; Mining Index, Leadville, Nov., 1881.

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Describes the occurrence of smaltite in Gunnison County and gives analysis.

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Ingalls, W. R.

1. Progress in the metallurgy of gold and silver. Min. Ind.,

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Chlorlnation at Cripple Creek and Delano mill at Boulder described.

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M. J., pp. 403-413, 1905.

Discussion of Leadville and Telluride districts.

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Summary of production of asphaltum, bismuth, coal, coke, copper, lead, iron, steel, manganese, molybdenum, tungsten, with special articles on Colorado gold and sil- ver mining by Geo. E. Collins; CyanWation during 1905. by C. H. Fulton; Progress in gold milling, 1905, by C. H. Richards.

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IngBlls, W. R.— Continued.

5. The mineral industry, its statistics, technology and trade

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Summary of production of coal, coke, copper, fluor- spar, gold, graphite, gypsum, iron, lead, manganiferous iron, and silver ores, mica, petroleum, silver, sulphur, zinc; tungsten, the milling practice; Colorado Iron works. Special articles on: Cyanidation in the U. S. and Mexico, 1906, by C. H. FiUton; literature on the ore deposits in 1906, J. F. Kemp; progress in ore dressing and coal washing, 1906, by R. H. Richards and C. E. Locke.

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Summary of production of cement, coal, coke, copper, gold, lead, manganese, mica, oil, silver, sulphur, tung- sten, uranium, vanadium, zinc. Special articles on: Cyanidation during 1907, C. H. Fulton; progress in ore dressing and coal washing, by R. H. Richards and C. E. Locke.

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Summary of production of coal, copper, graphite, gold, lead, oil, silver, tungsten, and zinc. Special articles on: Coal mining, by John D. Jones; gold mining, by Geo. E. Collins; cyanidation during 1908, by Chas. H. Fulton, with description of milling processes at Golden Cycle and Camp Bird mills; description of the process used by the. U. S. Reduction and Refining Co. at Colorado Springs; tungsten, by R. D. George.

8. The mineral industry, its statistics, technology and trade

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Summary of production of coal, copper, iron, graphite, gold, lead, manganese, tungsten. Special articles on: Coal, by John D. Jones; gold mining, Geo. E. Collins; bismuth, by Kirby Thomas.

Ingersoll, Ernest.

1. The sand dunes of the San Luis Valloy. Am. Nat., vol. 9. pp. 875-376. 1875.

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1. Boundary between the United States and Mexico, as snr- yeyed and marked by the international commission, under the convention of July 29th, Bevised Feb. 18, 1889. Pub. U. S., 55th Cong., 2nd sess., senate doc. no. 247 (v. 25). Also to accompany "Bept. of bound- ary commission, 1898," by Norris Peters Co., litho. Washington, D. C. Colorado boundary, no. 5.

Irving, J. D.

1. Some recently exploited deposits of wolframite in the

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2. Ore deposits of the Ouray district. U. S. Geol. Surv.,

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1. Geology and ore deposits near Lake City. U. S. Geol.

Surv., Bull. 478, 128 pp., Illust., maps, 1911.

Describes the general geology, occurrence, character, and relations of the ore deposits of the district, with a chapter on the geology of the San Juan Mountains and the Lake City district by Whitman Cross.

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Jackson, Robert Tracy.

1. Phylogeny of the Echini with a revision of the Paleozoic species. Boston Soc. Nat. Hist., Mem., vol. 7, 491 pp., must., 1912.

Jackson, W. H.

1. Ancient ruins in southwestern Colorado. Hayden Surv.,

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Ruins of Hovenweep and McElmo, Rio San Juan, Rio De Chelly, Epsom Creek, Montezuma Canyon, Chaco Canyon, Pueblo Pintado, Pueblo Wejege, Pueblo Una Vida, Pueblo Hungo Pavie, Chettro Kettle, Pueblo Bon- ito, Pueblo del Arroyo, Pueblos No. 8 and 9, Pueblo Pen- asca Blanca, Pueblo Alto, and stone stairways; pottery.

James, Edwin.

1. Remarks on the sandstone and Floetz trap formation of

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2. Map of the country drained by the Mississippi, western

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James, E. P.

1. Geological sketches of the Mississippi Valley. Phil. Acad. Sci., Jour., vol. 2, pp. 326-329, Illust, 1821.

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Janin, Charles.

1. Review of gold dredging in 1911. Mg. and Rci. Press,

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Reference to operations at Breckenrldge and Hahns Peak.

Jarvis, R. P., and Doolittle, Charles H.

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Jenney, W. P.

1. The chemistry of ore deposition. A. I. M. E., Trans., vol. 33, pp. 445-498, 1903. Abstract: Mg. and Sei. Press, vol. 86, pp. 317-318, 1903.

Description of ore deposits of Enterprise mine, Hico. and Bassick mine, Silver Cliff.

Jennings, E. P.

1. Analyses of some tellurium minerals. A. I. M. K., Trans.,

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Analyses from John Jay and Smuggler mine minerals, Boulder County.

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Jemegan, Joseph L., Jr.

1. The Whale lode of Park County. A. I. M. E., Trans.,

vol. 3, pp. 3r)2-356, 1875; Mg. Rev., vol. 6, no. 4, pp. 71-73, 1875.

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Includes notes on the geology, ores, and associated minerals of the district.

Jewett, J. J.

1. The Spanish Peaks. Kans. .\cad. Sci., Trans., vol. IS.

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A description of the Spanish Peaks, and their origin, in verse.

John.

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Johnson, A. J.

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Johnson, L. H.

1. Cripple Creek is sound today and for many years. Pacific

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Jones, Fayette A.

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Jones, J. D.

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JoneSy J. D. — Coutinued.

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Jones, J. H.

1. Production of coal mines west of the Mississippi river.

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Quotes from Arthur Lakes a description of the various coal fields of Colorado with analysis of Colorado anthrar cite and gives production by counties.

Jones, L. J. W.

1. Ferric sulphate in mine waters, and its action on metals.

Colo. Sci. Soc, Troc, vol. 6, pp. 46-55, 1902.

Describes experiments made and gives analysis of waters from Stanley mine, Idaho Springs. Discussion by E. B. Kirbey, Philip Argall, and Ernest LeNeve Foster.

Jones, T. Rupert.

la. On some fossil Ostracoda from Colorado. Geol. Mag.,

decade 3, vol. 3, pp. 145-148, 1880. 1. On some fossil Ostracoda from southwest Wyoming and

from Utah. Geol. Mag., decade 3, vol. 10, pp. 385-391,

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Jones, W. A.

1. Report of a survey and exploration in the Uinta Moun- tains, Utah. U. S. Army, Chief of Engineers Rept. for 1872, pp. 1108-1118, Appendix AA, 1873.

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Judd, E. K.

1. Mineral Industrv, its statistios, technology, trade in the

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Summary of production of coal, copper, gold, lead, manganese, nickel, cobalt, petroleum, pig iron, silver, tungsten, bismuth, and special articles on: Progress of ore dressing and coal washing, 1904, by R. H. Richards; progress in gold milling during 1904, H. H. Richards; and cyanidation in the U. S., by C. H. Fulton.

JndBon, 0. F.

1. Mineral resources of Colorado. Cripple Creek district. Mg. Rept., vol. 41, pp. 216-218, cont., 1900.

Julian, Charles.

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1. The so-called Leadville porphyry. Am. Nat., vol. 16, p. 925, 1882. (Abstract of pai)er read before Am. As- soc. Adv. 8ci., 1882.)

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Kedsie, G. E.

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Keeler, B. C.

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A re-publication of letters written by B. C. Keeler to the Chicago Times, with Ayer's map of the mining claims and Cram's map of Colorado.

Kellar, H. F. and J. A.

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1. Barite from Aspen. Am. lour. Sci., 3rd ser., vol. 37, pp.

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Describes occurrence, habit, and optical properties.

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Kesner, H. J., and Doolittle, F. W.

1. Comparative tests of sandstone and slags as concrete aggregates. Mg. Rept., vol. 56, pp. 54-55, 1907.

Keyes, Charles BoUin.

1. Physiographic significance of the Mesa de Maya. Iowa

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Comparison of production, 1884-5, and production by counties.

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King, Clarence.

1. Systematic geology. King Surv., vol. 1, 803 pp., 16 tables,

28 plates, 12 maps and atlas of 12 sheets, folio, 1878.

Reviewed by R. Pumpelly: Am. Jour. Sci., 3rd ser.,

vol. 17, pp. 296-302, 1879. Abstracts : J. S. Newberry,

Pop. Sci. Monthly, vol. 15, pp. 302-317, 1879: Am.

Jour. Sci., 3rd ser., vol. 17, pp. 170-175, 1879.

Area and exploration of 40th parallel. Archean expo- sures, correlation of Archean rocks, genesis of granite and crystalline schists, pre-Cambrian topography. Paleo- zoic: exposures and recapitulation of series. Mesozoic; Triassic, Jurassic, Cretaceous, Cenozoic. Rsum6 of stratigraphical geology. Tertiary volcanic rocks. Propy- lites, andesites, trachytes, rhyolites, basalts, correlation and succession of Tertiary volcanic rocks. Fusion, gene- sis and classification of volcanic rocks. Orography. Appendix by J. T. Gardner on geodetic methods.

Kinney, W. Z., and McNaughton, D. C.

1. Recent ore dressing practice at Silverton. Met. and Chem. Eng., vol. 9, pp. 487-489, 1911.

Kirby, Edmund B.

1. The ore deposits of Creede and their possibilities. E. and

M. J., vol. 53, pp. 325-326, 1892.

Describes the geologic formations of the region and the veins in fissures in which the valuable minerals are found.

2. Report on the metallurgical treatment of low-grade gold

ores. Colo. State Sch. Mines, Biennial Rept., 1894, pp. 25-34, 1894.

Kirchner, Walter C. G.

1. Contribution to the fossil flora of Florissant. St. Louis

Acad. Sci., Trans., vol. 8, pp. 161-188, Illust., 1898. Gives a list of plants previously described and describes several new species. Includes a bibliography.

Kirkaldy, G. W.

1. Three new Hemiptera-Heteroptera from the Miocene of Colorado. Entomological News, vol. 21, pp. 129-131,

Describes Teleocoris pothetias n. gen. and n. sp., Polio- coris amnesis n. gen. and n. sp., and Poliosphageus psy- chus n. gen. and n. sp., from the Miocene shales of Florissant.

166 Bibliography Op Colorado Geology

Kirkbride, J. E.

1. The Boulder oil field. E.and M. J., vol. 75, pp. 218-219,

Kneeland, Samuel.

1. Mineral resembling albertite, from Colorado. Annual

Sci. Discovery for 1866 and 1867, pp. 257-259, 1868. Discusses the geology and probable conditions under which the mineral was formed and gives analysis.

2. Notes on the geology along the Union Pacific Railroad.

Boston Soo. Nat. Hist., Proc, vol. 16, pp. 375-376,

Knight, F. C.

1. A suspected new mineral from Cripple Creek. Colo. Sci.

Soc, Proc, vol. 5, pp. 66-71, 1894.

Describes the chemical character of the material.

Knight, Wilber C.

1. Some new Jurassic vertebrates from - Wyoming. Am.

Jour. Sci., 4th ser., vol. 5, pp. 378-380, 1898.

2. The Nebraska Permian. Jour. Geol., vol. 7, pp. 357-374,

3. Jurassic rocks of southeastern Wyoming. Geol. Soc. Am.,

Bull., vol. 11, pp. 377-388, 1900.

Knowles, K. R., and Lowther, W. H.

1. The mineral watei-s of Steamboat Si>rings. See Lowther, W. H., and Knowles, R. R.

Knowlton, F. H.

1. Notes on a few fossil plants from the Fort Union group

of Montana. U. S. Nat. Mus., Proc, vol. 16, pp. 33-36,

la. The fossil plants of the Denver Basin. U. S. Geol. Surv., Mon. 27, ])p. 466-473, 1896.

2. A catalogue of the Cretaceous and Tertiary plants of

North America. T'. S. (eol. Surv., Bull. 152, 247 pp.,

3. The stratigraphic relations and paleontology of the "Hell

Creek Beds,'' Ceratop Beds," and equivalents, and

their reference to the Fort I'nion formation. Wash.

Acad. Sci., vol. 11, no. 3, pp. 179-238, 1909.

Concludes that beds should be referred to Fort Union formation and are Eocene in age.

Bibliography Op Coix)Rado Geology 167

Knowlton, P. H.— Continued.

4. Succession and range of Mesozoic and Tertiary floras. Jour. GeoL, vol. 18, pp. 105-110, lllust., 1910.

Knowlton, F. H., and Stanton, T. W.

1. Stratigraphy and paleontology of the Ijaramie and re- lated formations in Wyoming. See Stanton, T. W., and Knowlton, F. H.

Koch, Walter A.

1. The Clancy process at Cripple Creek. Mg. Sci., vol. 64, pp. 202-203, 1911.

Koenig, George A.

1. On the relation of sohorlomite to garnet. Am. Jour. Sci.,

3rd ser., vol. 33, 425, 1887. Extract from pajier in

Phila. Acad. Nat. Sci., Proc, j). 355, 1886.

The extract contains analysis of massive titaniferous garnet from southwestern Colorado.

la. Microcline, IMkes Peak region, FA Paso and Douglas counties. Phila. Acad. Nat. Sci., Proc, p. 156, 1876.

lb. Arfvedsonite from Pikes Peak region. El Paso County. Am. Phil. Soc, Phila., Proc, vol. 16, p. 518, vol. 17, p. 516, 1877.

2. Jarosite from Colorado. Am. Jour. Sci., 3rd ser., vol. 21,

pp. 160 and 411, 1881. Brief description abstracted from Phila. Acad. Nat. Sci., Proc, p. 331, 1881.

3. On the occurrence of lustrous coal with native silver in

a vein in porphyry in Ouray County, Colorado. A. I. M. E., Trans., vol. 9, pp. 650-656, 1881.

4. Alaskaite. Am. Phil. Soc, Phila., Proc, p. 472, 1881.

5. Beegerite. Am. Chem. Jour., vol. 11, p. 379, 1881.

EU>eiiigsberg6ry Joh.

1. Bergfahrten in Mexiko und (.'olorado. Schweizer Alpen-

club, Jahrbuch, Jg. 42, pp. 210-235, lllust., 1907.

Includes notes on the volcanoes of Mexico, and on physiographic and geologic; features of Colorado.

KrauBy Edward H., and Scott, I. D.

1. Ueber interessanteamerikanische Pyritkrystallc Zeiisclir.

f. Krystal. u. Mineral, Hd. 44, lleft 2, pp. 144-153,

lllust, 1907.

Describes the crystallography and composition of pyrite crystals from Colorado anrf New Jersey.

168 BIBLIOGRAPHY oV COLORADO GEOLOGY

Kreisinger, H., and Bay, W. T.

1. The significance of dnifts in steam boiler practice. See Ray, W. T., and Kreisinger, H.

Kruger, H. A., Hamilton, William J., and Enriquez, E. W.

1. Geology of the Perry Park syncline. Colo. Sch. of Mines,

Bull., vol. 5, no. 2, pp. 80-99, 1910. Gypsum deposits described.

Krusch, P.

1. Ueber die nutzbain Radium-Lagerstatten und die Zu- kunft des Radium-Marktes. (The world's useful ra-

dium and uranium deposits, Eaot Africa, England, Bohema, Colorado, Scandinavia and the future of the radium market.) Erzbergbau, May 16, 1911, p. 134; Z. prakt. Geol. Bd. 18, pp. 83-90, 1910. (Read before International Geol. Congr. Stockholm, 1910.

Kunz, George P.

1. Mineralogical notes. Am. Jour. Sci., 3rd ser., vol. 34,

pp. 477-480, must., 1887.

Includes descriptions of rhodochrosite and hydrophane.

2. Tysonite and Biistnasite from Crystal Park, near Maui-

tou Springs. Min. Mag. and Jour. Min. Soc, vol. 9, p. 394, 1890-1.

K , C. R.

1. Geology of the Aspen mining district. Am. Geol., vol. 24,

pp. 307-308, 1899.

Review of U. S. Geol. Surv., Mon. 31.

Ladd, S. B.

1. Topographical report of Middle Park division. Hayden

Surv., 7th Ann. Rept., pp. 601-669, 1874.

Gives the elevations of specific points on east slope and main divide, discusses general topography, and rain- fall of the region surveyed, describes, roads and trails, and gives population of settlements.

2. Topographical report of northern division. Hayden Surv.,

8th Ann. Rept., pp. 435-442, 1876.

Includes description of roads and trails and list of elevations.

Lakes, Arthur.

1. The dinosaurs of the Rocky Mountains. Kans. City Rev., vol. 2, pp. 731-735, 1879.

Bibliography Of Colorado Geology 169

Lakes, Arthur — Continued.

2. Geology of the Aspen mining region, Pitkin County.

Colo. Sch. Mines, Biennial Kept., 1886, pp. 43-84, must., 1887.

3. The Trinidad coal region of southern . Colorado. Colo.

Sch. Mines, Rept. of field work and analyses, 1886, pp. 83-102, 1888.

4. The coal field of Crested Butte, Gunnison County. Colo.

Sch. Mines, Rept. of field work and analyses, 1886, pp. 105-128, Illust, 1888.

5. Geology of Colorado ore deposits. 159 pp., plates, Den-

ver, 1888. Also in Colo. Sch. Mines, Ann. Rept., 1887. Review: Am. Geol., vol. 5, pp. 57-58, 1890.

6. Geology of Colorado coal deposits. 264 pp., Illust., Colo.

Sch. Mines, 1889. Review: Am. Geol., vol. 5, pp. 312-313, 1890.

7. Extinct volcanoes in Colorado. Am. Geol., vol. 5, pp.

38-43, Illust., 1890.

8. The fuel resources of. Colorado. Am. Geol., vol. 8, pp.

7-19, 1891.

9. Colorado coals. Coll. Eng. and Met. Min., vol. 13, p. 39,

10. Prospecting. Coll. Eng. and Met. Min., vol. 13, p. 188,

1892-3; vol. 14, p. 5, cont., 1893.

Information to aid in the search for gold and silver. Includes references to lithology of rocks from many Colorado areas, examples of structure from San Juan and Mosquito Range, Howardsville in San Juan, Boulder County, with special description of the Golden Age and Sentinel mines at Jimtown; San Juan, Red Mountain, Creede, Cripple Creek. Blanket deposits of South Park, Lead vi lie. Red Cliff, and Aspen.

11. Cripple Creek. Topography and geology. Coll. Eng. and

Met. Min., vol. 14, p. 230, Illust., 1893.

12. The Stanley Consolidated Mine, Idaho Springs. Coll.

Eng. and Met. Min., vol. 14, pp. 282, 308, Illust., 1893.

13. Kinds of rocks in which gold principally occurs. Min.

Ind. and Tradesman, vol. 13, p. 186, 1893.

14. Chemical theories about formation of nuggets. Min. Ind.

and Tradesman, vol. 13, p. 211, 1893.

15. The geological age of gold deposits. Min. Ind. and

Tradesman, vol. 13, pp. 214-215, 1893.

170 BIBLIOGRAPHY OP COrX)RADO GEOLOGY

Lakes, Arthur — Continued.

16. Colorado's new gold camps. Kng. Mag., vol. 7, pp. 623-

638, 1894.

Describes the occurrence of gold ores at Cripple Creek, the silver ores of Creede, and the newly discovered gold belt of Iadville.

17. Cripple Creek, a typical gold region. Coll. Eng. and Met.

Min., vol. 15, p. 73, cont., Illust., 1894-5.

Describes the topography, geolog>', mining methods, and ore deposits.

18. Geology of Cripple Creek. 32 pp., Ilhist., Chain and

Hardy Co., 1895.

19. Notes on placer mining. A review of what has been

done in many parts of the world. Min. Ind. and Rev.,

vol. 16, pp. 117-129, cont., 1895.

History of placer mining in various countries and description of method used on Clear Creek.

20. Sketch of a portion of the (Junnison gold belt, including

the Vulcan and lammoth Chimnev mines. A. I. M.

E., Trans., vol. 26, pp. 440-448, Illust, 1896.

Describes the igneous rocks of the region and the occurrence of gold ores.

21. Prospecting for gold and silver in North America. 268

pp.. The Colliery Engineer Co., 1896.

22. Prospecting for gold and silver. Coll. Eng. and Met.

Min., vol. 16, pp. 5, 25, 48, 73, 121, 1895-6.

Leadville gold deposits described. Ibex and Little Johnnie mines; Clear Creek placer deposits and Alma placer described.

23. Hahns Peak. Coll. Eng. and Mot. Min., vol. 16, p. 147,

Illust., 1895-6.

Discusses the relation of mineral springs of Steamboat Springs to mineral deposits; gives geology of the region, and analysis of spring water. Discusses the structure of Hahns Peak.

24. Placer gold, Akron. Coll. Eng. and Met. Min., vol. 16,

p. 208, 1895-6.

Describes the geology of the lake deposits and fossils.

25. Ward mining district. Coll. Eng. and Met. Min., vol. 16,

pp. 125-128, 232-233, Illust., 1895-6.

Discusses mineral deposits of Boulder County with special reference to mines of Gold Hill, Sunshine, and Ward. Describes Valmont dike.

Bibliography Of Colorado Geology 171

Lakes, Arthur — Continued.

26. Iron and manganese. The great Cebolla Kiver deposits.

(Doll. Eng. and Met. Min., vol 16, pp. 267-268, 1896. Describes the occurrence of ore bodies and discusses their origin.

27. Gunnison region. Coll. Eng., vol. 16, p. 267, Illust.,

Describes rocks and relation to ore deposits in Mam- moth and Vulcan mines.

28. The Newhouse tunnel at Idaho Springs. Eng. Mag., vol.

10, pp. 49-60, Illust., 1896.

Describes mines of the district, ore deposits, and tunnel.

29. The Pikes Peak and Colorado Springs water works. Eng.

Mag., vol. 10, pp. 273-285, Illust., 1896.

30. Cripple Creek. Sei. Am. Suppl., vol. 46, pp. 17192-17193,

Describes the occurrence of gold ores of Cripple Creek.

32. The Gunnison gold belt. Coll. Eng., vol. 17, pp. 17-22,

Illust, 1896.

33. Pikes Peak. Coll. Eng., vol. 17, pp. 59-60, 1896.

Describes the character of the Pikes Peak granite and its disintegration.

35. The Cripple Creek region. Epitome of the U. S. Geol. Survey's report on the Cripple Creek mining region. Coll. Eng., vol. 17, pp. 105-110, 1896.

36. ' Gold mine and tunnel : The Crown Point mine and Knick- erbocker tunnel, Idaho Springs. Coll. Eng., vol. 17, p. 142, Illust., 1896.

37. Summit district gold regions. An epitome of a descrip-

tion of the ore deposits of Summit district, Rio Grande County, by R. C. Hills. Coll. Eng., vol. 17, pp. 164-165, 1896.

38. Peculiar formations in the San Juan region. Coll. Eng.,

vol. 17, pp. 350-352, Illust., 1897.

Describes the character and occurrence of the San Miguel conglomerate and the San Juan formation.

39. Common freaks of nature. Coll. Eng., vol. 17, p. 239,

Concretionary structures, *'Nigger heads," turtle stones, found in coal, iron and other mines.

40. The San Juan region. Coll. Eng., vol. 17, pp. 206-209,

Describes the topography and geologic features.

172 Bibliogbaphv Of Colorado Geology

Lakes, Arthur — Continued.

41. Victor (Cripple Ciwk). Coll. Eng., vol. 17, pp. 10-211,

Describes the occurrence of gold In this locality. Gold Coin mine.

42. A view of San Juan from Engineer Mountain. Coll.

Eng., vol. 17, pp. 259-203, Illust., 1896. Illustration of mine sketching.

43. Quartz. Coll. Eng., vol. 17, p. 307, 1896.

Describes amethyst from Creede and Cripple Creek; rose quartz and smoky quartz from Leadville; chal- cedony, opal and Jasper deposits in the state.

44. Rico mining district. Coll. Eng., vol. 17, pp. 359-360,

Illust., 1897.

Describes the gold and silver mines of the district.

45. Mining sketches. Coll. Eng., vol. 17, pp. 383-388, Illust.,

Describes the general geologic features of portions of the San Juan region: Conejos Range, Toltec gorge. La Plata coal field, Animas Canyon, Sllverton to Red Moun- tain, Porphyry basin and National Bell mine.

46. riacer prospecting. Coll. Elig., vol. 17, pp. 473-476, 1896.

Placer deposits of . Alma described and other likely localities suggested.

47. Ore shoots of Cripple Creek. Coll. Eng., vol. 17, pp. 481-

482, Illust, 1897.

Describes the occurrence of ore veins at Cripple Creek: Raven Hill, Gold Hill, Bull Hill, Battle Mountain. Beacon HiU.

48. The Needles. La Plata Mountains. Coll. Eng., vol. 18,

pp. 74-77, 101-103, 1897.

49. Vein occurrence. Coll. Eng., vol. 18, pp. 109-110, Illust.,

Vein structure of Clear Creek described.

50. A mountain placer. Coll. Eng., vol. 18, pp. 193-195,

Illust., 1897.

Describes the character and occurrence of a placer in South Fork.

51. The undeveloped economic resources of Colorado. Stone,

vol. 14, pp. 358-369, 1897.

Gives description of the geological features of portions of Colorado and their economic resources.

52. The geology of Aspen and the conditions existing in the

Smuggler mine at the time of the fire. Mines and

Minerals, vol. 18, pp. 251-253, Illust, 1898.

Describes the general geologic features of the region.

Bibliography Op Colorado Geology 173

LakeSy Arthur — Continued.

53. Silver Cliff district. Mines and Minerals, vol. 18, pp.

296-297, must., 1898.

Describes the occurrence of gold and silver ore bodies.

64. Volcanic craters. Real and false craters and their rela- tion to mining and ore deposits. Mines and Minerals,

vol. 18, pp. 321-322, Illust., 1898.

Discusses the occurrence of volcanic vents in Colorado.

55. Rosita and Silver Cliff. Mines and Minerals, vol. 18, pp.

344-346, Illust, 1898.

Describes the occurrence of the silver-lead ores of the region.

56. Telluride ores. Mines and Minerals, vol. 18, pp. 369-370,

Describes the character and occurrence of some of the telluride ore deposits of Colorado.

57. Prospecting experiences. Mines and Minerals, vol. 18,

pp. 398-400, Illust., 1898.

Describes the geologic features about Salida and Rosita.

58. The El Paso coal field. Mines and Minerals, vol. 18, pp.

483-484, Illust., 1898.

Describes the occurrence of coal north of Colorado Springs.

59. The Fluorine mine. Cripple Creek. Mines and Minerals,

vol. 18, pp. 489-491, Illust, 1898.

Describes the occurrence of the igneous rocks of the region and the occurrence of the gold.

60. Ore occurrence in the Red Mountain district. Mines and

Minerals, vol. 18, pp. 513-514, 1898.

Describes the occurrence of the silver and copper ores of the region.

61. Tellurium and the telluride ores. Mines and Minerals,

vol. 18, pp. 533-535, Illust., 1898.

Describes the general characters of the telluride ores of Colorado.

62. A peculiar ore body. Mines and Minerals, vol. 18, p. 558,

Quotes a description of the Anne Lee mine, Victor, by R. A. F. Penrose, jr.

63. Ores of the Vailcan mine. Mines aid Minerals, vol. 18,

pp. 562-503, Illust., 1898.

Describes the occurrence of gold ores in Gunnison County.

174 Bibliography Of Colorado Gboloqy

Lakes, Arthiir — Continued.

64. Boulder region. Mines and Minerals, vol. 19, pp. 252-253,

65. Natural gas in Colorado. Mines and Minerals, vol. 19,

pp. 339-340, 1899.

Describes occurrence and origin; relations to bitumi- nous shale and asphaltum; White River gas field.

66. Observations on some prospects and mines around Breek-

enridge, South Park. Mines and Minerals, vol. 19, pp. 440-441, must., 1899.

67. La Sal Mountains. Mines and Minerals, vol. 19, pp. 467-

469, Illust., -1899.

Geology and ore deposits described.

68. Prospecting for oil in untried regions. Mines and Min-

erals, vol. 19, pp. 477-478, Illust., 1899.

Oil found in Colorado where there were no direct indi- cations on the surface. The St. Vrain.

69. Coal fields of Colorado. Mines and Minerals, vol. 19,

pp. 541-543, Illust., 1899.

70. Visit to a cyanide mill. Mines and Minerals, vol. 20,

pp. 5-7, Illust., 1899.

A description of Arequa Cyanide mill at Cripple Creek.

71. Topeka gold mine. Central City. Mines and Minerals,

vol. 20, pp. 82-83, Illust., 1899.

72. Grand River coal field of Colorado. Mines and Minerals,

vol. 20, pp. 110-111, Illust., 1899.

Describes the geological occurrence of coal in this region.

73. Prospecting for coal in Colorado. Mines and Minerals,

vol. 20, pp. 148-149, Illust., 1899.

74. Description of Kaven Hill, Cripple Cieek and its ore de-

posits. Mines and Minerals, vol. 20, pp. 154-155, Illust, 1899.

75. The Florissout Basin. Mines and Minerals, vol. 20, pp.

179-180, 1899.

Fossil trees from Florissant. Amazon stone from Crystal Park.

76. Zinc in Colorado : its Occuri-euce and distribution. Mines

and Minerals, vol. 20, p. 302, 1900.

77. The Lamaii:ine mine at Idaho Hiprings. Mines and Min-

erals, vol. 20, pp. 385-386, Illust., 1900.

Development, description of vein, difficulties of drain- age, and method used.

Bibliography Of Colorado Geology 175

LakeSy Arthur — Continued.

78. The La Plata Mountains of Colorado, a description of the

telluride veins and the Mancos contact. Mines and Minerals, vol. 20, pp. 279-280, lUust., 1900.

79. Telluride ore. Mg. Kept., vol. 41, p. 182, 1900.

80. Argo or Newhouse tunnel. Mines and Minerals, vol. 21,

pp. 31-33, Illust., 1900.

Purpose, method of driving, comparison with other tunnels.

81. Exploiting a new placer field near Alma. Mines and

Minerals, vol. 21, pp. 128-129, Illust, 1900.

82. The "down-town" mines of Leadville. Mines and Min-

erals, vol. 21, pp. 147-149, Illust., 1900.

83. Farncomb Hill gold deposits. Mines and Minerals, vol.

21, p. 222, 1900.

84. The contact deposits of the La Plata Mountains. Mines

and Minerals, vol. 21, pp. 224-225, Illust., 1900.

85. The great London fault of the Mosquito Range and the

London mine. Mines and Minerals, vol. 21, pp. 204- 206, must, 1900.

86. The geology of the oil fields of Colorado. Colo. Sch.

Mines, Bull., vol. 1, pp. 221-226, 1901.

Describes the stratigraphy and geologic structure of the oil fields and the occurrences of oil.

87. The American Nettie mine, near Ouray. Mines and Min-

erals, vol. 21, pp. 241-245, Illust., 1901.

Describes the geology of the region and the occurrence of ores in cave deposits.

88. Cripple Creek. Mines and Minerals, vol. 21, pp. 276-280,

Illust, 1901.

Describes the volcanic rocks and phenomena of the region.

89. The Gold Coin mine. Mines and Minerals, vol. 21, p. 291,

Illust, 1901.

A history of its development and a description of the mine, surface plant, and mine clubhouse.

90. The Curtis coal mine. Mines and Minerals, vol. 21, p.

298, 1901.

Brief description of occurrence and character of coal near Colorado Springs.

91. Cave ore deposits. Mines and Minerals, vol. 21, pp. 333

334, Illust., 1901.

Describes the character and occurrence of ore bodies in the San Juan region.

176 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

92. Chlorination mills. Cripple Creek. Mines and Minerals,

vol. 21, pp. 337-339, Illust., 1901.

93. Prospecting for oil in Colorado. Mines and Minerals,

vol. 21, pp. 481-483, 1901.

Describes the general geology and occurrence of oil in Colorado.

94. Building and monumental stones in Colorado. Mines

and Minerals, vol. 22, pp. 29-30, Illust, 1901.

Describes the general characters and occurrence of various building stones.

95. Sedimentary building stones of Colorado. Mines and

Minerals, vol. 22, pp. 02-64, Illust, 1901.

Describes the character and occurrence of building stone of sedimentary strata.

96. Prospecting for oil in Colorado. Mines and Minerals,

vol. 22, pp. 107-109, Illust., 1901.

97. Oil springs of Rio Blanco County. Mines and Minerals,

vol. 22, pp. 150-152, Illust., 1901.

98. . Tunnel schemes. Mines and Minerals, vol. 22-, pp. 177-

178, Illust, 1901.

The standard of Cripple Creek compared with Roth- shonberger Stollen tunnel.

99. The geological occurrence of oil in Colorado. Abstract :

Sci. Am. Suppl., vol. 52, p. 21505, 1901.

100. Oil in Colorado, the geology of the deposits, and the

various horizons in which signs of oil have been found. Mines and Minerals, vol. 22, pp. 256-257, 1902.

101. The water problem in Cripple Creek and other Colorado

camps. Mines and Minerals, vol. 22, pp. 302-303,

Cripple Creek and Leadville.

102. The Buckhorn mine and the San Luis Park. Peculiar

formations which contain some oi*es and present a striking appearance. Mines and Minerals, vol. 22, pp. 322-323, Illust, 1902.

103. A lesson on faults. Sketch of the Asi)en mining region

in which the effects of faulting in the past, and still going on, are shown. Mines and Minerals, vol. 22, pp. 341-343, Illust., 1902.

104. The western oil field of Mesa and Rio Bianco Counties.

A region geologically favorable to oil. Mines and Minerals, vol. 22, pp. 388-389, Illust, 1902.

Bibliography Of Colorado Geology 177

Lakes, Arthur — Continued.

105. Geology along the Animas River, with descriptions of

coal and metal mines along its course, including a sketch of the Silver Lake mine. Mines and Minerals, vol. 22, pp. 398-399, Illust, 1902.

106. Natural gas in Colorado, a description of some of its

occurrences and the conditions which point to the probability of its existence. Mines and Minerals, vol. 22, pp. 417-418, Illust, 1902.

107. Prospecting for oil in the region of the cliff dwellers of

southeastern Colorado. Mines and Minerals, vol. 22,

pp. 438-440, Illust., 1902.

Describes the general geology and structure of the region.

108. The Spanish Peaks. Coal region in southern Colorado.

An illustration of the effects of volcanic action on

coal seams. Mines and Minerals, vol. 22, pp. 463-464,

Illust., 1902.

Gives a summary of R. C. Hills' description of the region.

109. Crestone mining district in San Luis Park. A region

containing some good veins favorably situated for economical mining. Mines and Minerals, vol. 22, pp. 467-468, Illust., 1902.

110. Glacial placer beds on the flanks of the Mosquito Range,

South Park. Mines and Minerals, vol. 22, p. 469, Illust., 1902.

111. Prospecting for coal in the western states — points of re

semblance and points of difference between the west- ern and eastern coal fields. Mines and Minerals, vol. 22, pp. 506-507, Illust, 1902.

112. The prairie region of northeastern Colorado. A descrip-

tion of some interesting geological occurrences near Sterling. Mines and Minerals, vol. 22, p. 510, Illust.,

Describes the Tertiary strata of the region.

113. Volcanoes. Mines and Minerals, vol. 22, pp. 554-556,

Illust., 1902.

The manner of their eruption, the effect upon the deposition of minerals, and the relation to mining fields.

115. South Park, Colorado. A description of its geology and

economic resources in gold, silver, lead, coal and oil.

Mines and Minerals, vol. 23, pp. 78-79, 1902.

178 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

116. Coal and asphalt deposits along the Maffat railwaT.

Geological conditions shown which promise valuable

deposits at workable depths. Mines and Minerals,

vol. 24, pp. 134-136, Illust., 1903.

Describes the general geology and the occurrence and character of the coal and asphalt deposits near Meeker, Rifle, and Book Cliffs.

117. Aguilar coal and oil district. A descrii>tion of the geol-

ogy, the thickness and quality of the coal veins, and the indications of oil. Mines and Minerals, vol. 23, pp. 196-198, Illust., 1903.

118. The soils of Colorado in relation to their geological origin

and surroundings, and their availability for irriga- tion. Mines and Minerals, vol. 23, pp. 207-209, 1903.

119. The La Plata Mountains. Observations on their forma-

tions and the influence of the different igneous rocks upon mineralization. Mines and Minerals, vol. 23, pp. 221?-223, Illust., 1903.

120. Ilecent earth movements. An account of some move-

ments in the Rocky Mountains as shown by effects on streams and mines. Mines and Minerals, vol. 23, p. 228, 1903.

121. Summit-County placers of Colorado; a description of the

great hydraulic works now nearing completion near Rreckenridge. Mines and Minerals, vol. 23, pp. 241- 214, Illust, 1903.

122. Ked Cliff ore deposits. Not unlike in some respects to

the ore deposits of the Mancos contact and the Amer- ican Nettie at Ouray. Mines and Minerals, vol. 23, pp. 252-253, 1903.

123. The Silver Lake mine, near Silverton, San Juan County.

An instance of successful operation of a large mine

at high altitude. Mines and Minerals, vol. 23, pp.

389-390, Illust., 1903.

Includes notes on the occur rence and geologic relations of the silver-lead ores.

124. The present oil situation in Colorado; a review of the

histories of the several regions, and the discoveries

which have been made. Mines and Minerals, vol. 23,

pp. 390-401, Illust., 1903.

Includes an account of the geology of the Boulder oil field.

Bibliograpuy Ov Coi.Orado Geology 179

Lakes, Arthur — Continued.

125. Geology and economics along the line of the new Moffat

railway to be built from Denver to Salt Lake City. Mines and Minerals, vol. 23, pp. 418-419, Illust., 1903.

126. Creede njining camp. Valuable mines opened through

the Nelson and Humphreys tunnels. A description of

the Humphreys mill. Mines and Minerals, vol. 23,

pp. 433-435, lilust., 1903.

Describes briefly the geology and occurrence of the silver-lead ores.

127. Peculiar mines and ore deposits of the Rosita and Silver

Cliff mining district. Ore deposits in a volcanic throat. Mines and Minerals, vol. 23, pp. 487-489, Illust, 1903.

128. The coal fields of Colorado. Colo. Sch. Mines, Bull., vol.

2, no. 2, pp. 11-23, Illust., 1904.

Describes the formations of the coal, the location, character, and geologic age of the coal fields and the character and occurrence of the coals.

129. The Yampa coal fields. A description of the anthracite,

bituminous, and lignite field traversed by the Moffat

Road in Routt County. Mines and Minerals, vol. 24,

pp. 249-251, Illust, 1904.

Describes the occurrence, character, and geologic rela- tions of the coal beds.

130. The Book Cliff coal mines. Coal seams near Grand Junc-

tion, which exhibit interesting peculiarities in their locations and formations. Mines and Minerals, vol.

24, pp. 289-291, Illust., 1904.

Describes the occurrence, character, geologic relations, and economic development of these mines.

131. The Jimtown mining district and the Golden Age mine.

Mines and Minerals, vol. 24, pp. 505-6, Illust., 1904.

132. Sketching around a copper-silver smelter. ( Argo smelter)

Mines and Minerals, vol. 25, pp. 46-48, Illust, 1904.

133. Field notes concerning ore shoots and the influence of

down hill pressure on the outcrop of veins. Mines

and Minerals, vol. 25, pp. 92-93, Illust., 1904.

Independence mine, Cripple Creek, and Durant and Ingersoll mines of Aspen described and illustrated.

134. Free gold below the zone of surface oxidation. Mg. Rept.,

vol. 49, p. 35, Illust., 1904.

180 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

135. Ore in rocks of all geological periods. Mg. Kept., vol. 49,

pp. 525-526, 1904.

136. Some observations concerning faults. Mg. Rept., vol. 49,

pp. 555-556, cont., II lust., 1904. ♦

137. Geology of the Boulder oil field. Mg. Kept., vol. 49, pp.

559-560, must., 1904.

138. Ore shoots and veins that do not come to the surface.

Mg. Rept., vol. 50, pp. 55-56, 1904.

Description of San Juan ore deposits.

139. Ore deposits in the cement of rocks. Mg. Rept, vol. 50,

p. 140, must., 1904.

140. Volcanic craters and ore deposits. Mg. Rept., vol. 50, pp.

216-217, 1904.

141. Gypsum deposits in Colorado. U. S. Geol. Surv., Buii.

223, pp. 86-88, Illust., 1904.

Describes the character, occurrence, and economic development of the gypsum deposits of Colorado at Love- land, Morrison, Perry Park, Colorado City and Canon City.

142. Some of the ore deposits of Colorado. Mg. and Sci. Press,

vol. 88, pp. 377-378, Illust., 1904.

Describes the character and occurrence of ore deposits at Rosita and Silver Cliff, Cripple Creek, Custer County, and San Juan.

143. Geology- of the western ore deposits. 433 pp. Denver,

The Kendrick Book & Stationery Company, 1905.

New edition, entirely rewritten, and enlarged, with 300 illustrations.

144. Geology of the hot springs of Colorado and speculations

as to their origin and heat. Colo Sci. Soc, Proc., vol. 8, pp. 31-37, 1905.

145. Gold, free in other than oxidized zones. Mines and Min-

erals, vol. 2-5, p. 331, 1905.

Central City and Breckenridge ore deposits described.

146. Oil-impregnated volcanic dikes in Colorado. Mines and

Minerals, vol. 25, p. 394, Illust., 1905.

147. The Occidental and other coal mines of Huerfano County.

A description of the region. Mines and Minerals, vol. 25, pp. 473-474, Illust., 1905.

148. Coal fields of Colorado. Mg. Mag., vol. 11, p. 270, 1905.

(Review of article in Mg. Rept., vol. 51, pp. 73-74, 1905.)

Bibliography Of Colorado Geology 181

Lakes, Arthur — Continued.

149. The Rocky Mountain roal fields. Mg. Kept., vol. 51, pp.

5-7, must, 1905.

150. Faults with special reference to coal and metal mining.

Mg. Kept., vol. 52, pp. 6-7, Illust., 1905.

151. Graphite in Colorado. From Trinidad and Raton. Mg.

Rept., vol. 51, p. 45, 1905.

152. The coal fields of Colorado. Mg. Rept., vol. 51, pp. 73-74,

Illust., 1905.

153. The anthracite situation in Colorado. Mg. Rept., vol. 51,

pp. 98-99, 1905.

154. Coal along the eastern foothills. Mg. Rept., vol. 51, pp.

127-128, 1905.

155. Examples of Colorado faults, both old and recent. Some

practical suggestions. Mg. Rept., vol. 52, pp. 166-167,

Illust., 1905.

Describes the system of faulting in South Boulder, Twin Peaks, Golden fire clay beds, Ralston Creek, Aspen, and Leadville. Discusses landslides of San Juan and Aspen.

156. The geology and coal deposits of the Spanish Peaks dis-

trict. Mg. Rept., vol. 51, pp. 184-185, Illust., 1905.

157. The La Plata or southwestern Colorado coal field. Mg.

Rept., vol. 51, pp. 212-213, Illust., 1905.

158. Coals of the southern Colorado or Walsenburg and Trini-

dad region. Mg. Rept., vol. 51, pp. 234-235, Illust.,

159. Disturbances and other peculiarities of the northeastern

coal field of Colorado between Ralston Creek and Boulder. Mg. Rept., vol. 51, pp. 326-328, Illust, 1905.

160. The Grand River coal field. Mg. Rept., vol. 51, pp. 379-

381, Illust., 1905.

161. The Yampa coal field of Routt County. Mg. Rept., vol.

51, pp. 404-405, Illust., 1905.

162. The hot and mineral springs of Routt County and Middle

Park. Mg. Rept., vol. 52, pp. 438-439, Illust., 1905.

163. The South Park coal field. Mg. Rept., vol. 51, pp. 428

429, Illust, 1905.

164. Geology of the hot springs of Colorado and si)eculations

as to their origin and heat. Mg. Rept., vol. 51, pp. 479-481, 1905.

182 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

165. Sketch of the economic resources of the foothills of the

Front Range of Colorado. Mg. Kept., vol. 51, pp. 522-524, must., 1905; Mg. World, vol. 23, pp. 312-314,

166. The Jackson concentrating works, Idaho Springs. Mg.

Kept., vol. 51, pp. 547-548, Illust., 1905.

167. Coal resources along the line of the Moffat road. Mg.

World, vol. 23, p. 520, Illust., 1905.

168. The anthracite area of Routt County. Mg. World, vol.

23, pp. 552-553, Illust, 1905.

169. Colorado anthracite. The fields of the state and th in-

fluence of eruptive rocks in metamorphosing the bitu- minous deposits. Mines and Minerals, vol. 26, pp. 275-276, Illust., 1906.

170. The importance of proper exploration by drills. Mines

and Minerals, vol. 26, p. 486, 1906.

Leadville and Arkansas Valley explorajtion.

171. Flints and other hard rocks as material for tube mills.

Mines and Minerals, vol. 26, pp. 53-54, Illust., 1905.

172. Coals changes by heat in Colorado. Mines and Minerals,

vol. 26, pp. 566-567, 1906.

173. The Boulder oil fields. Mg. Kept., vol. 53, pp. 314-315,

1906. (Review of U. S. Geol. Surv., Bull. 225.)

174. A peculiar occurrence of native mercury, free gold, and

telluride minerals near Trimble Springs, Durango. Mg. Rept., vol. 53, pp. 389-390, 1906.

175. Movements of the Rocky Mountains of Colorado. Mg.

Rept., vol. 53, p. 493, 1906.

176. The obelisk of Pelee and its similarity to volcanic phe-

nomena in the mining districts of Colorado and Nevada. Mg. Rept., vol. 54, p. 212, Illust, 1906.

177. Origin of schist veins in igneous rocks. Mg. Rept., vol. 54,

p. 517, Illust., 1906.

178. Mineral and hot springs in Colorado. Mg. World, vol. 24,

pp. 359-360, Illust., 1906.

179. The Gunnison gold belt of Colorado. Mg. World, vol. 25,

p. 576, Illust., 1906.

180. The spontaneous combustion of coal and its effects on the

surrounding strata. Colo. Sci. Soc, Proc, vol. 8, pp. 301-304, 1907.

.Bibliography Of Colorado Geology 188

Lakes, Arthur — Continued.

181. A trip to San Juan. Mines and Minerals, vol. 27, pp.

351-352, 1907.

Includes notes on the geology of the region.

182. Oil shale in Colorado. Book Cliffs district. Mg. Rept,

vol. 55, p. 266, 1907.

183. The spontaneous combustion of coal fields and alteration

of overlying strata. Grand River district. Mg. Rept., vol. 55, p. 396, lUust., 1907.

184. Empire zinc company's plant at Canon City. Mg. Rept.,

vol. 56, pp. 268-269, Illust., 1907.

185. Relation of anticlinal structure to gas, oil and water.

(Front Range.) Mg. Rept., vol. 56, pp. 585-586, Illust, 1907.

186. Examination of a large coal property in the west. Mg.

World, vol. 27, pp. 143-144, Illust., 1907.

187. The Maple Tieaf mine. Mg. World, vol. 26, p. 329, Illust,

188. Natural gas wells and springs of White River. Mg.

World, vol. 26, p. 419, Illust., 1907.

189. Sketch of the oil fields of Colorado. Mg. World, vol. 26,

p. 684, 1907.

190. The coals of Routt County. Mg. World, vol. 26, pp. 748-

750, Illust., 1907.

191. Dredging placer gravels at Breckenridge. Mines and

Minerals, vol. 28, pp. 577-582, Illust., 1908.

Description of the ground worked, the construction and operation of the dredges.

192. Spontaneous combustion of coal. Mines and Mining,

vol. 16, no. 5, pp. 3-4, 1908.

Metamorphism of Book Cliffs.

193. Evolution of knowledge of veins and ore deposits. Mg.

Sci., vol. 58, pp. 5-0, Illust., 1908.

A brief review of the various characteristics of veins and ore bodies from which the knowledge of occurrence has been advanced. Leadville, Cripple Creek, San Juan, American Nettie mine, Gunnison and Vulcan deposits described.

194. Organic matter in mines, veins and ore deposits. Mg.

Rci., vol. 58. p. 170, 1908.

Description of graphite in San Juan mines, tree trunk in gold mine at Central City, charcoal at Rosita, and coal and silver mines at Crested Butte.

184 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

195a. Prospecting in the oil fields of eastern and western Colorado. Mp:. Sci., vol. 57, pp. 404-406, 422-424, Ilhist., maps, 1908.

195. The general geology of Summit County. Mg. Sci., vol.

57, pp. 243-244, 289-291, 1908.

196. Study of geological faults in sea shore cliffs. Mg. Sci.,

vol. 58, pp. 525-527, Illust., 1908.

Description of Leadville and Aspen regions.

197. The Breckenridge gold placers. Mg. World, vol. 28, pp.

15-16, Illust, 1908.

198. The coals and coal fields of Colorado. Mg. World, vol.

28, pp. 525-526, 565-566, Illust., 1908.

Discusses age and character of various deposits.

199. Gold dredging practice in placers of Breckenridge. Mg.

Sci., vol. 59, pp. 28-30, Illust., 1909.

200. Why are mining camps centers of mineralization? Mg.

Sci., vol. 59, pp. 65, 85, 124, 145, 168, 184, 204, 224,

Illust, 1909.

Ore occurrence in different sections compared and correlated: Boulder, Jimtown, Clear Creek, Gilpin, Cripple Creek, Rosita-Silver Cliff, Mount Tyndal or Baa- sick, San Juan, La Plata, Leadville, Vulcan mine.

201. Intersection, faulting and movement in veins. Mg. Sci.,

vol. 59, pp. 247-248, Illust., 1909.

202. Experience with long cross cut tunnels. Mg. Sci., vol. 59,

pp. 286-287, Illust., 1909.

Reference to Newhouse tunnel.

203. The building stones of the Rocky Mountains. Mg. Sci.,

vol. 59, pp. 344-34v5, Illust., 1909.

Description of occurrence of anite, rhyolite, basalt, marble, limestone, and sandstone.

204. Portland cement material. Mg. Sci., vol. 59, pp. 427-428,

Illust., 1909.

205. The evolution of the discovery and development of the

natural mineral resources of the Rocky Mountains.

Mg. Sci., vol. 59, pp. 449-450, 1909.

Discussion of deposits of gold, silver, coal, coke, lime- stone, fire clay, iron, building material, sewer pipe, pot- tery clay, Portland cement, artesian wells, oil, rare minerals.

Bibliography Of Colorado Geology 185

Lakes, Arthur — Continued.

206. The origin, oh<iracler, and distribution of gold in alluvial

deposits. Mg. Sci., vol. 59, pp. 471472, 490-491; vol. 60, pp. 8-9, 1909.

Breckenridge placer deposits referred to.

207. The origin of oil. Mg. Sei., vol. 60, pp. 124-125, 367-368,

560-562, must., 1909.

Deals with the organic origin and the volcanic origin of oil as Illustrated by phenomena observed In Colorado and Wyoming fields. Description of Boulder, Florence, Book Cliffs and Routt County oil fields.

208. Principal mining areas of Gunnison County. Mg. Sci.,

vol. 60, pp. 196-197, Illust., 1909.

Geology and ore deposits of the Tincup-Pitkin and other districts.

209. Natural gas in Colorado and Wyoming. Mg. Sci., vol. 60,

p. 225, 1909.

Florence, near Meeker on White River. Owl Creek, near Rifle.

210. The Hahns Peak mining region, Routt County. Mg. Sci.,

vol. 60, pp. 292-296, Illust.,. 1909.

General description of the lode and placer deposits and geology of the region.

211. Hydrocarbons in the United States. Mg. Sci., vol. 60,

pp. 340-342, 1909.

Asphalt and gilsonite deposits of Book Cliffs, Middle Park.

212. Precious stones. Mg. Sci., vol. 60, pp. 414-416, Illust,

Topaz from Nathrop, Chalk Mountain, Crystal Park, near Pikes Peak, Florissant. Garnets from near Salida, Nathrop, Chalk Mountain, and Ruby Mountain. Beryls from Bear Creek, Mount Antero, Chaffee County. Phena- cite from Pikes Peak, Florissant and Mount Antero. Amazon stone, Florissant, Pikes Peak. Zeolites from Golden. Fluorite from Cripple Creek. Jet from El Paso coal seams.

213. Determination of depths to horizontal coal seams. Mg.

Sci., vol. 60, pp. 508-510, Illust., 1909.

Geological conditions of coal deposits east of the range in Colorado.

186 Bibliography Of Colorado Gbology

Lakes, Arthur — Continued.

214. Ores in volcanic cmters and fumarole orifices. Mg.

World, vol. 30, pp. 425-427, Illust., 1909.

Ore deposits of Cripple Creek, Rosita and Silver Cliff, Gunnison, American Nettie at Ouray, Famcomb Hill, Breckenridge, Newman Hill, Rico, Aspen, Leadville, Ground Hog mine, and Red Cliff.

215. Modern ancient volcanoes and ore deposits. Mg. World,

vol. 30, pp. 583-584, Illust., 1909.

Discussion of influence of volcanic eruptions and igneous intrusions on ore deposits With examples drawn from prominent mining camps in Colorado and else- where.

816. . Occurrence of ore deposits in mineral belts. Mg. World,

vol. 30, pp. 669-671, Illust., 1909. Map of Colorado mineral belt

217. The ore occurrence and origin of cave mines. 'Mg. World,

vol. 30, pp. 727-729, Illust., 1909.

Ore deposits of Red Mountain, Ouray, and Silverton district described. National Belle mine.

218. Peculiar crystalline forms of minerals and metals. Mg.

World, vol. 30, pp. 831-832, Illust, 1909.

Description of crystallized leaf gold from Wapiti mine, Farncombe Hill, Breckenridge; telluride from Cripple Creek; and zeolite crystals from Table Mountain, Golden.

219. Geology of the mineral resources of Colorado. Mg.

World, vol. 30, pp. 977-978, Illust., 1909.

Describes coal deposits, artesian wells, clay deposits, cement materials, building and flag stone, silver, lead, gold, anthracite, gilsonite, petroleum, and rare minerals, including uranium.

220. The depth and continuity of fis8ui*e veins. Mg. World,

vol. 31, pp. 363-364, Illust., 1909.

Examples from Rosita and Georgetown.

221. Shaw's Park marble deposits. (Twin Mountain, Fremont

County, near Canon City.) Mg. Sci., vol. 61, pp. 124- 125, Illust., 1910.

222. Occurrence of marble. Mg. Sci., vol. 61, pp. 268-269, 1910.

Occurrence and distribution of marble throughout the world. Short reference to Colorado deposits.

223. Notes by the way on a trip to Silverton. Mg. Sci., vol.

62, pp. 199-201, Illust., 1910.

224. San Luis Valley artesian wells. Mg. Sci., vol. 62, p. 224,

Bibliography Of Colorado Geology 187

Lakes, Arthur — Continued.

225. The history of Cripple Creek drainage projects. Mg.

Sci., vol. 62, pp. 542544, Illust., 1910.

226. Some remarkably fine marble quarries in Colorado. Mg.

World, vol. 32, pp. 609-611, Illust, 1910.

Description of Yule Creek marble deposits, Gunnison County.

227. Glacial lakes and their relation to mining. Mg. World,

vol. 33, pp. 93-94, Illust., 1910.

228. Geology of part of the Ten Mile Range. Mg. World, vol.

33, pp. 455-457, Illust., 1910.

229. Prospecting in the San Juan Mountains. Mg. World,

vol. 33, pp. 520-522, Illust., 1910.

230. Mining in -the Silverton quadrangle. Mg. World, vol. 33,

pp. 863-865, Illust, 1910.

231. Geology of the La Veta coal field. Mines and Minerals,

vol. 31, pp. 466-468, Illust., 1911.

232. Geology and ore deposits of Farncombe Hill. Mg. and

Eng. World, vol. 34, pp. 433-444, Illust., 1911.

233. Suggestions on prospecting and discovery of mines. Mg.

and Eng. World, vol. 35, p. 107, Illust., 1911.

234. Operations at the Wellington mine, Breckenridge. Mg.

and Eng. World, vol. 35, pp. 1265-1266, Illust., 1911.

235. Economic resources of the foothills near Denver. Mg.

Sci., vol. 63, pp. 31-32, Illust., 1911.

Discussion of building stone, clay, gypsum, and lime- stone deposits.

236. Natural gas in the western states. Mg. Sci., vol. 63, pp.

6162, Illust, 1911.

White River district described.

237. A survey of the Rocky Mountain coal fields. Mg. Sci.,

vol. 63, pp. 98-100, Illust, map, 1911.

238. Oil and gas prospects in the San Luis Valley. Mg. Sci.,

vol. 63, pp. 179-180, Illust., 1911.

239. Notes on the geology of jetroleum. The petroleum fields

of Colorado. Mg. Sci., vol. 63, pp. 235-236, 261-262, 311-312, 1911.

240. The geolog}- of the Boulder oil field. Mg. Sci., vol. 63,

pp. 341-342, Illust., 1911.

241. Geology of the Florence oil field. Mg. Sci., vol. 63, pp.

367-368, Illust., 1911.

188 Bibliography Of Colorado Geology

Lakes, Arthur — Continued.

242. Ore bearing fissures in sedimentary rocks. Mg. Sci., vol.

63, pp. 443-445, Illust., 1911.

South Mineral Creek district, San Juan County, dis- cussed.

243. Likely fields for prospecting in Colorado. Geological ad-

vice to Colorado prospectors. Mg. Sci., vol. 63, pp. 587-589, 642-645, Illust., 1911. .

244. A volcanic crater near Salida. Mg. Sci., vol. 64, pp. 11-12,

Illust, 1911.

245. Breccias and their relationships to ore deposition. Mg.

Sci., vol. 64, pp. 103-104, Illust., 1911.

246. Geology and ore deposits of a Mount Baldy mine.

(Breckenridge) Mg. Sci., vol. 64, pp. 294-296, Illust.,

247. Glacial remains of the Georgetown quadrangle. Mg. Sci.,

vol. 64, pp. 325-326, Illust., 1911.

248. Geology, mines, and ore deposits of Breckenridge. Mg.

Sci., vol. 64, pp. 388-391, cont., Illust., 1911.

249. Gold dredging with steam shovel near Dillon. Mg. Sci.,

vol. 64, pp. 445-446, Illust., 1911.

250. Western Canada coalfields and those of Colorado com-

pared. Brit. Columbia Mg. and Eng. Record, p. 208,

251. Oil signs and prospects in Colorado and Alberta. Can.

Mg. Jour., vol. 33, p. 271, 1912.

252. The Canadian oil shales and their comparison with some

elsewhere; (Colorado). Can. Mg. Jour., vol. 33, p. 314, 1912.

253. Effects of landslides in mining regions. (Aspen and the

San Juan) Mg. and Eng. World, vol. 36, pp. 861-862, Illust., 1912.

254. Relation of shearage zones and mineral veins. (Cripple

Creek) Mg. and Eng. World, vol. 37, pp. 1001-1002, Illust., 1912.

255. Depth and continuity of fissure veins and their ore. (San

Juan) Mg. and Eng. World, vol. 37, pp. 1095-1096, Illust, 1912.

256. Geology of the Breckenridge placers. Mines and Min-

erals, vol. 32, pp. 430-433, Illust., 1912.

257. Gold dredging uj) to date. (Breckenridge) Mines and

Minerals, vol. 32, pp. 725-72'9, Illust, 1912.

Bibliography Of Colorado Geology 189

Lakes, Arthur — Continued.

258. Neglected gold dredging ojiportuuities of the west. (Tin-

cup) Mg. Sci., vol. 06, pp. 116-118, 1912.

259. Early day operation of shallow placer deposits. Mg. Sci.,

vol. 66, pp. 329-330, Illust., 1912.

Lakes, Arthur, Jr.

1. Gold dredging operations in Breckenridge district. Mg. and Eng. World, vol. 35, p. 1103, Illust., 1911.

Lakes, A., and Welles, A. M.

1. Peculiar mines and ore deposits of the Rosita and Silver Cliff mining district. See Welles, A.M., and Lakes, A.

Lamb, W. A., Freeman, W. B., and Henshaw, P. P.

1. Surface water supply of the United States; Missouri

river basin, 1009. U. S. Geol. Surv., AV. S. Paper 266,

291 pp., Illust., 1911.

Stream measurements for 1909 of South Platte River, Geneva Creek, Smelter Creek, Duck Lake Creek, Scott Gomer Creek, Clear Creek, St. Vrain, Boulder Creek, Big Thompson and Cache la Poudre.

Lamb, W. A., Freeman, W. B., Richards, Raymond, and Bice, B. C.

I. Surface water supply of the Missouri River basin, 1910.

U. S. Geol. Surv., W. S. Paper 286, 308 pp., 1912.

Gives stream measurements of the Laramie River, South Platte, Tarryall Creek, North Fork of the South Platte, Geneva Creek, Smelter Creek, Duck Lake Creek, Scott Gomer Creek, Clear Creek, St. Vrain, Boulder, South Boulder, Big Thompson, and Cache la Poudre.

Lamb, W. A., and Taylor, T. U.

1. Surface water supi)ly of western Gulf and Rio Grande drainage, 1906. See Taylor, T. U., and Lamb, W. A.

Langridge, B. A.

1. Geology of Boulder oil and coal nieasui*es. Mg. Investor,

vol. 33, p. 213, Illust., 1903.

Describes the deposits of coal, oil, clay, and building materials.

Lapham, Macy H., and party.

1. Soil survey of the lower Arkansas Valley. U. S. Dept. Agr., Bur. Soils, 4th Rept., (Field Operations, 1902) , pp. 729-772, 1903.

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Larsen, E. S.

1. The economic geology of Carson Camp, Hinsdale County.

U. S. Geol. Surv., Bull. 470, pp. 30-38, 1911.

2. Alunite in the San Cristobal quadrangle. U. S. Oeol.

Surv., Bull., 530, pp. 179-183, 1913.

Larsen, E. S., and Emmons, W. H.

1. A preliminary report on the geology and ore deposits of Creede, Colorado. See Emmons, W. H., and Lar- sen, E. S.

Larsen, -E. S., and Hunter, J. F.

1. Two sulphur deposits in Mineral County. U. S. Geol. Surv., Bull. 530, pp. 363-369, .1913. Abstract: Mg. Sci., vol. 65, p. 528, 1912.

Larsen, E. S;, and Sohaller, W. T.

1. Hinsdalite, a new mineral. Wash. Acad. Sci., Jour., vol. 1, pp. 25-26, 1911; Am. Jour. Sci., 4th ser., vol. 32, pp. 251-255, 1911.

Lawrence, B. B.

1. Notes on the lease or tribute system of mining as prac-

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2. The Pelican mine, Clear Creek County. Colo. Sci. Soc,

Proc, vol. 6, pp. 41-45, 1902.

Gives history of the mine and describes the character of ores and ore bodies.

3. Biological notice of Arthur L. Collins. A. I. M. E.,

Trans., vol. 34, pp. 835-838, 1904.

Lawrence, D. H.

1. The concentration and separation of zinc-lead ores as practiced at Summit County, Breckenridge. Mg. Kept., vol. 52, p. 492, Illust., 1905.

Laws, E. H., and Weeks, P. D.

1. Sinter-roasting with Dwight-Lloyd machines at Salida. See Weeks, F. D., and Laws, E. H.

Lay, H. C.

1. Recent geological i)henomena in the *'Telluride quadran- gle" of the U. S. Geol. Surv. A. I. M. E., Trans.,

vol. 31, pp. 558-567, 1902.

Presents the author's observations on the glacial phe- nomena, earth movements, and underground waters of the region.

Bibliography Of Colorado Geology 191

Le Oouppey de la Forest, Max.

1. Quelques grottes des Etats-unis d- Ainerique. Spelunca,

t 35, no. 35, pp. 3 (117) -21 (135), Illnst., 1904.

Describes Mammoth and (Colossal caves in Kentucky, Wyandotte Cave in Indiana, and Wind Cave and Grand Cavern in Colorado. Includes some account of the Car- boniferous formations in which the carves occur.

Lee, Ebrry A.

1. Report of the State Bureau of Mines for the year 1897.

167 pp., Denver, 1898. Review : E. and M. J., vol. 65,

p. 610, 1898.

Describes the character, occurrence and production in 1897 of the economic mineral products of the various counties. Iron ores by Regis Chauvenet; coal statistics, by counties; cyanide and chlorination in Colorado by R. B. Turner; ore treatment in general, discussed; smelting; petroleum, building stones, clays, mineral springs, with analyses.

2. The asphalt deposits of Middle Park. E. and M. J., vol.

67, p. 468, 1899.

3. Report of the Bureau of Mines, Colorado, 1899-1900.

Production of precious minerals, 1870-1899; by counties for 1899 and 1900.

4. Tungsten ores in Colorado. B. and M. J., vol. 71, p. 466,

5. Larimer County gypsum. Stone, vol. 21, pp. 35-37, 1900.

6. Mining in Colorado. Mines and Minerals, vol. 21, pp.

415-416, 1901.

Epitome of report of State Bureau of Mines, 1899-1900.

7. Uranium in Colorado. E. and M. J., vol. 71, p. 564, 1901.

Uranium ore reported from Gilpin, Routt, Rio Blanco, Montrose, San Miguel, Dolores, Montezuma, La Plata, San Juan, Ouray, Hinsdale, El Paso and Teller counties.

8. Mineral production of Colorado, 1901. E. and M. J., vol.

73, p. 548, 1902.

Production of gold, silver, copper, lead, zinc, iron, manganese, bismuth, tungsten, coal, and petroleum.

9. Colorado : Report of tbe State Bureau of Mines, Denver,

for the years 1901-2. 310 pp., map, Denver, 1903.

Abstracts: E. and M. J., vol. 75, p. 443, 1903; Mg.

Kept, vol. 45, pp. 382-383, 1902.

Gives a history of precious metal mining by counties in Colorado, with notes upon the geologic occurrence, production, etc., of precious metals and other minerals.

192 Bibliography Of Colorado Geology

Lee, Willis T.

1. Geology of the Aspen mining district, by J. E. Spurr.

Jour. GeoL, vol. 7, pp. 721-722, 1899. (Review of U. S. Geol. Surv., Mon. 31.)

2. The origin of the debris-covered mesas of Boulder. Jour.

Geo!., vol. 8, pp. 504-511, Illust., 1900.

Gives a geological map of the region and describes the conditions of the formation of the mesas.

3. The glacier of Mount Arapahoe. Jour. Geol., vol. 8, pp.

647-654, Illust., 1900.

Describes the cirque and the exceptional adiFantages which permit the accumulation and preservation of a large amount of snow and ice.

4. The Morrison formation of southeastern Colorado. Jour.

Geol., vol. 9, pp. 343-352, Illust., 1901.

Describes the character and occurrence of the Jurassic and Cretaceous strata of the region and discusses the stratigraphic and paleontologic evidences of the age of the Morrison formation.

5. The areal geology of the Castle Rock region. Am. Geol.,

vol. 29, pp. 96-110, Illust., 1902.

Describes the occurrence and character of the sedi- mentary and igneous rocks and the geologic structure of the region.

6. The Morrison shales of southern Colorado and northern

New Mexico. Jour. Geol., vol. 10, pp. 36-58, Illust.,

Describes the general structure of the region, gives detailed sections and discusses the age and equivalency of the shales.

7. Canyons of southeastern Colorado. Jour. Geog., vol. 1,

pp. 357-370, Illust, 1902.

Includes sections of the strata cut by some of the canyons described.

7a. Age of the Atlantosaurus beds. Science, new ser., vol. 17, pp. 292-293; Geol. 8oc. Am., Bull., vol. 14, pp. 531-

8. Note on the Carboniferous of he Sangre de Cristo Range.

Jour. Geol., vol. 10, pp. 393-396, 1902.

Gives a detailed section in the Sangre de Cristo Range and a list of the fossils encountered.

9. Local upturning sedimentary rocks at their outcrop. Ab-

stract : Science, new ser., vol. 27, p. 891, 1908.

Bibliography Of Colorado Geology 193

Lee, Willis T.— Continued.

10. The Grand Mesa coal field. TJ. S. Geol. Siirv., Bull. 341.

pp. 316-335, map, 1909.

Descriptions of Gunnison, Palisade, Rollins and Som- erset coal districts.

11. The correlation of sections lithologically similar. Ab-

stract: Science, new ser., vol. 29, p. 239, 1909.

Presents evidence bearing upon the correlation of coal- bearing rocks in the Grand Mesa coal field of Colorado and the Raton coal field of New Mexico.

12. Unconformitv in the so-called Laramie of the Raton coal

field, New Mexico. Geol. Soc. Am., Bull., vol. 20, pp. 357-368, II lust., 1909.

Reference to Colorado Laramie.

13. Geology of the coal fields of Mesa and the West

Elk Mountains. U. S. Gool. Surv., Bull. 510, 237 pp., maps, 1912.

14. Stratigraphy of the coal fields of northern central New

Mexico. Geol. Soc. Am., Bull., vol. 23, pp. 571-686,

Lee, Willis T., and Nickles, J. M.

1. Classified list of papers dealing with coal, coke, lignite, and peat, contained in publications of the U. S. Geol. Survey. U. S. Geol. Surv., Bull. 316, pp. 518-532,

Leflbigrwell, E. D. K., and Oapps, S. R.

1. Pleistocene geology- of the Sawatch Range, near Tead- ville. See Capps, S. R., and lieflingwell, E. D. K.

Leidy, Joseph.

la. Remarks on Poicilopleuron valens, Clidastes intermedius, Leiodon proriger, Baptemys wyomingensis, and Emys stevensonianus. Phil. Acad. Nat. Sci., Proc, pp. 3-5,

1. Report of the vertebrate fossils of the Tertiary formations

of the west. Hayden Surv., 4th Ann. Rept., pp. 340-

370, 1871.

Includes descriptions of a few fossils collected in Colorado.

(7)

194 Bibliography Of Colorado Geology

Leidy, Joseph — Continued.

2. Description of ieniains of Vertebrata from the Tertiary formations of different states and territories west of the Mississippi River. Hayden Surv., Mon., vol. 1,

pt. 1, pp. 227-265, Illust., 1873.

Describes Megacerops coloradensis from Colorado, pp. 239-242, must, plates 1 and 2.

Leithy Charles Kenneth.

1. Iron ores of the western United States and British Columbia. U. S. Geol. Sui-v., Bull. 285, pp. 194-200,

Gives a summarized account of the iron ore deposits of Wyoming, Washington, British Columbia, Colorado, California and Utah. Ashcroft in Pitkin County, White Pine and Cebolla districts of Gunnison County.

Leith, Charles Kenneth, and Van Hise, C. R.

1. Pre-Cambrian geology of North America. See Van Hise, C. R., and Leith, C. K.

Leonard, Frank.

1. Cyanide practice on Boulder County ore. (Cash mine.)

W. Chem. and Met., vol. 3, pp. 11-15, 1907.

2. Mining problems in Colorado. Mg. and Sci. Press, vol.

88, pp. 77-78, 1904.

Lesley, J. Peter.

1. A dictionary of the fossils of Pennsylvania and neigh- boring states Ucimed in the reports and catalogues of the survey. Oeol. Surv. Penn., Rept. P4, 438 pp., 1889.

Lesquereux, Leo.

1. On the fossil plants of the Cretaceous and Tertiary for- mations of Kansas and Nebraska. Hayden Surv., 4th Ann. Rept., pj). 370-385, 1871 ; Am. Jour. Sci., 3rd

ser., vol. 6, pp. 441-450, 1873.

A number of specimens from Colorado are listed.

la. Tertiary flora of North America. Hayden Surv., 5th Ann. Rept., pp. 304-318, 1872.

Biblioouaphy Of Colorado Geology 195

Lesquereuz, Leo — Continued.

2. Lignitie formations and fossil flora. Hayden Surv., 6th

Ann. Rept., pp. 317-427, 1873. Abstracts : Am. Jour.

Sci., 3rd ser., vol. 6, pp. 441-450, 1873; Am. Nat, vol.

8, pp. 217-218, 1874.

Part 1. Details of explorations in the lignitlc forma- tions of the Rocky Mountains. The Arkansas Valley from Pueblo to Canon City. Colorado Springs to Denver. South Platte to Cheyenne. Cheyenne to Carbon Station. Black Butte to Rock Spring. Green River Station. Evanston, Coalville, Utah. The western Lignitic forma- tion considered as Eocene. General characters of the flora of the American Eocene. The American Eocene identical with that of Europe by general characters. Part 2. The Lignite: its formation. The lignite con- sidered in its applicability, areal distribution, and thick- ness of the strata. The northern lignitic basin. The New Mexico lignitic basin. The Colorado lignitic basin, from Pueblo to Cheyenne. The lignitic deposits along the Union Pacific railway from Cheyenne to Evanston. Enumeration and description of fossil plants from the western Tertiary formations. Table of distribution of the species of fossil plants from the Tertiary formations of North America. Description of species of fossil plants from the Cretaceous of Kansas.

3. Contributions to tlio fossil flora of the western territories.

Part I, The rnlaceous flora. Hayden ., Mon.,

vol. r, 1.36 pp., Illust., 1874.

Discovery of fossil plants of the Dakota group. Sur- face-distribution of the Dakota group. Stratigraphical distribution of the Dakota. Distribution of the leaves in the composition of the Dakota. Dakota considered as a marine formation. Generic characters of the flora of the Dakota. Disconnection of the flora of the Dakota group from antecedent types. The flora of the Dakota group in relation to climate. Description of species. General characters and relation of the flora of the Dakota.

4. The Lignitic formation and its fossil flora. Hayden Surv.,

7th Ann. Kept., pp. 365-425, 1874.

Age of North America Lignitic. Distribution of the fossil plants in the different groups of the Tertiary. The Tertiary is divided into four groups, and a list of species is given for each group with remarks on the species. Description of species. Climate of the American Tertiary as represented in Its flora.

196 Biblioobapht Of Colobado Oeologt

Lesquereuz, Leo — Continued.

5. On .the formation of the lignite beds of the Rocky Moun-

tain region. Am. Jour. Sci., 3rd ser., vol. 7, pp. 29-31,

6. On the age of the lignitic formations of the Rocky Moun-

tains. Am. Jour. Sci., 3rd ser., vol. 7, pp. 546-557,

Cites numerous occurrences of fossils to show that Dr. Newberry's objections are invalid.

7. On the general characters and the relation of the flora

of the Dakota group. Hayden Surv., Bull., vol. 1, no. 2, 1st ser., pp. 52-62, 1875.

8. A review of the fossil flora of North America. Hayden

Surv., Bull., vol. 1, no. 5, 2nd ser., pp. 233-248, 1875.

A revised article published originally in the Penn Monthly.

9. On some new species of fossil plants of the Lignitic forma-

tions. Hayden Surv., Bull., vol. 1, no. 5, 2nd ser.,

pp. 363-389 1875.

The fossils described are for the most part from Wyo- ming, but a few specimens were found in Colorado.

10. New 8i>ecies of fossil plants from the Cretaceous forma-

tion of the Dakota group. Hayden Surv., Bull., vol. 1, no. 5, 2nd ser., pp. 391-400, 1875.

11. On the Tertiary floi-a of the North American Lignitic,

considered as evidence of the age of the formation. A

review of the Cretaceous flora of North America.

Hayden Surv., 8th Ann. Rept., pp. 271-375, Illust.,

Table of subdivisions of the Tertiai*y of Europe, ac- cording to the floras. Table showing relations of fossil plants from Point of Rocks. New species from Point of Roclis. Tertiary fossil plants described.

12. Contributions to the fossil flora of the western terri-

tories. Part 2. The Tertiary flora. Hayden Surv.,

Mon., vol. 7, 366 pp., Illust., 1878.

Part I. The lignitic formations of North America. Areal distribution. Stratigraphy of the Lignitic and its capacity of combustible material. The age of the Lig- nitic indicated by its geological distribution and its fauna. Part IL Description of the Tertiary fossil plants: Cryptogamae, Phanerogamae, Monocotyledons, Dicotyle- dons, Polypetalae. Part III. Age of the Lignitic forma-

Bibliography Op Colorado Geology 197

Lesquereux, Leo — Continued.

tions determined by the characters of the fossil plants. Table of distribution of species of Point of Rocks. In- cludes discussion of stratigraphy of various points In Colorado, and description of a number of Colorado iosslls.

13. Report. Hayden Surv., lOtli Ann. Kept., pp. 481-520,

Remarks on the specimens of Cretaceous and Tertiary plants secured by the survey in 1877, with a list of the species hitherto described. Catalogue of Cretaceous and Tertiary plants of North America.

14. Remarks on the Cretaceous and Tertiary flora of the

Western Territories. Am. Nat., vol. 16, pp. 102-108,

15. On some *si)eeimen8 of Permian fossil plants from Colo-

rado. Harvard Coll., Mus. Comp. Zool., Bull., whole ser. 7, Geol. ser. 1, 1882.

Description of fossil plants from Fairplay.

16. Contributions to the fossil flora of the western terri-

tories. Part III. Tlie Cretaceous and Tertiary floras.

Hayden Surv., Mon., vol. 8, 283 pp., Illust., 1883.

Flora of the Dakota group. Laramie group. Miocene flora. Descriptions of a number of fossils from Floris- sant, Morrison, and Golden.

17. Professor L. F. Ward's synopsis of the flora of the Lara-

mie group. Am. Jour. Sri., 3rd ser., vol. 34, pp. 487-

488, 1887.

Notes taken from a letter by Mr. L#esquereux to Prof. Ward.

18. List of recently identified fossil plants belonging to the

U. S. Nat. Museum, with descriptions of several new species. V. S. Nat. Mus., Proc, vol. 10, pp. 21-46, 1887.

19. Fossil plants collected at Golden. Harvard Coll., Mus.

Comp. Zool., Bull., vol. 16, no. 3, pp. 43-59, 1888.

Lewis, H. C.

la. Siderophyllite. Phila. Acad. Nat. Sci., Proc, vol. 31, p. 254, 1880.

1. Alaskaite: by Dr. C A. Koenig. Am. Nat., vol. 16, p. 162, 1882.

Review of description of Alaskaite from Colorado.

198 Bibliography Of Colorado Geology

Lewis, Lawrence.

1. The Colorado Fuel and Iron Company. E. and M. J.,

vols. 82, and 83, 1906.

A continued article giving the history of the great steel industry in the West.

Liddell, Charles A., and Parsons, II. F.

1. The coal and mineral resources of Routt County. See Parsons, H. F.. and Liddell, Charles A.

Liebenan, W. A.

1. Der Cripple Creek Golddistrikt, seine Entdeckung, En-

twicklung, Geologic, und Zukunft. Berg- und Htit-

temn. Zeitung, Jg. 63, pp. 2-5, 29-32, 57-60, 89-92,

117-121, 161-164, Illust, 1904.

Describes the discovery, development, geology and future of the Cripple Creek gold district.

Lincoln, F. C.

1. Certain natural associates of gold. Ec. Geol., vol. 6, pp. 247-302, 1911.

Lindgren, Waldemar.

1. Metasomatic processes in fissure-veins. A. I. M. E.,

Trans., vol. 30, pp. 578-692, Illust., 1901. Abstract:

Am. Jour. Sci., 4th ser., vol. 11, pp. 243-244, 1901.

Contains brief descriptions of several Colorado dis- tricts Including Silver Cliff, Cripple Creek, and Summit district, and the San Juan region.

2. The geological features of the gold production of North

America. A. I. M. E., Trans., vol. 33, pp. 790-845,

Discusses the occurrence and geologic relations of gold-bearing veins and deposits, the production of gold in general and in the several gold-producing states, Alaska, Canada and Mexico. Colorado reference pp.

3. The suhterrauean gases of Crii>ple (.'reek. Science, new

ser., vol. 21, p. 662, 1905.

4. Metasomatic processes in the gold deposits of Western

Australia. Ec. Gcol., vol. 1, pp. 530-544, 1906.

After describing the gold deposits of western Australia, compares their features with those of Colorado and California deposits.

mitLIOGRAPHY OF COLORADO (.Kor.CKiV 190

Lindgren, Waldemar. — C oiitinued.

5. Tlie development of the metal miuiug indiisti\v in the

western states. Am. Mg. Cong., Proc, 9th Rept., pp.

156-165, 1907. Abstract: Ores and Metals, vol. 15,

no. 23, pp. 14-16, 1906.

History of mining in Colorado.

0. Some gold and tungsten deposits of Boulder County. Ec.

Geol., vol. 2, pp. 453-463; 1907.

Describes tiie local geology and the occurrence and character of the ore.

7. Telluride ores. Cripple Creek. Mg. and Sci. Press, vol.

94, p. 472, 1907.

8. Notes on copper deposits in Chaifee, Fremont, and Jeffer-

son counties. U. S. Geol. Surv., Bull. 340, pp. 157-

174, Illust., 1908.

Geologic relation and origin of the deposits.

9. Copper, silver, lead, vanadium and uranium ores in sand-

stone and shale. Ec. Geol., vol. 6, pp. 568-581, 1911.

10. Platinum and allied metals. U. S. Geol. Surv., Min. Res.

1911, pt. 1, pp. 987-1003, 1912.

11. Contributions to economic geology. U. S. Geol. Surv.,

Bull. 530, 400 pp., 1913.

Contains bibliography of Survey publications on vari- ous metallic and nonmetalllc products.

Lindgren, Waldemar, and Hayes, C. W.

1. Contributions to economic geology, 1907. See Hayes, C.

W., and Lindgren, Waldemar.

Lindgren, Waldemar, and McOaskey, H. D.

1. Gold and silver. Production for 1908. U. S. Geol. Surv., Min. Res. 1909, pt. 1, i)p. 157-183, 1909.

Lindgren, Waldeiiiar, and Ransome, Frederick Leslie.

1. Report of progiess in the geological resurvey of the

Cripple Creek district. U. S. Geol. Surv.. Bull. 254, 3G pp., 1904.

Describes the general geology and the occurrence and character of the gold ore deposits.

2. The geological I'esurvey of tlie Cripple Creek district.

U. S. Geol. Surv., Bull. 2(50, pj). S5-98, 1905.

Describes the general geology and the character and relations of the gold deposits, and discusses the types of ore and their relations to depth from surface.

200 Bibliography Of Colorado Geology

Lindgren, Waldemar, and Bansome, Frederick Leslie — Continued.

3. Geology and gold deposits of the Cripple Creek district.

U. S. Qeol Surv., Prof. Paper 54, 516 pp., Illust.,

maps, 1906. Abstracts: Mines and Minerals, vol. 27,

p. 541, 1906; Mg. Kept, vol. 55, pp. 2D-30, 1907.

Describes the general features of the area, the geologi- cal structures, the occurrence, character of the igneous and metamorphic rocks, the minerals, and the character, occurrence, relations, and genesis of the ore deposits, and gives detailed descriptions of the mines.

Lines, E. T., Veatch, A. C, and Fuller, M. L.

1. Record of deep wells drilled for 1904. See Fuller, M. L., Lines, E. T., and Veatch, A. C.

Locke, C. E., and Richards, B. II.

1. Progress in ore dressing and coal washing, 1906, 1907. See Richards, R. H., and Locke, C. E.

Lockwood, Samuel.

1. The great cemetery in Colorado. I>op. Sci. Monthly, vol.

4, pp. 470-479, 1873.

In large part a popular description of the Tertiary fossils found in Colorado by E. D, Cope.

Loew, Oscar.

1. Investigations upon niineralogical, agricultural and chem-

ical conditions observed in portions of Colorado, New Mexico and Arizona, in 1873. Wheeler Surv., Kept., vol. 3, pp. 569-061, 1875.

Agricultural resources: soil, vegetation, cosmical phe- nomena. Analyses of mineral springs, including mineral springs of Canon City and Manitou, Parnassus Springs. Springs of Wagon Wheel Gap, Pagosa Springs. Analyses of the coals of New Mexico and Colorado. Composition of various ores from New Mexico and Colorado. The eruptive rocks of New Mexico and Arizona. Mineralogi- cal tables. Includes a large number of minerals and rocks from Colorado localities.

2. Geological and niineralogical report on jortions of Colo-

rado and New Mexico. Wheeler Surv., Ann. Rept., Appendix LL. pp. 97-110. Illust., 1875.

Contains notes on the valley of the Arkansas River at Pueblo, the Greenhorn and Sangre de Cristo mountains, and temperature of streams.

Bibliography Of Colorado Geology 201

Loew, Oscar — Continued.

3. Report upon the agricultural i-esources of northern New

Mexico and southern Colorado, with analyses of soils, plants, etc. Wheeler Surv., Ann. Rept, Ap- pendix LL, pp. 129-131, 1875.

4. Lieut. G. M. Wheeler's zweite Expedition nach Neu-

Mexiko und Colorado, 1874. Petermann's Mitt., vol. 20, pp. 401-416, 453-4fU, 1874; vol. 21, pp. 441-454, 1875; vol. 22, pp. 209-217, map, 1876.

Logan, W. N.

1. A discussion and correlation of certain subdivisions of the Colorado formation. Jour. Geol., vol. 7, pp. 83- 91, 1899.

Long, Stephen II.

1. Account of an expedition from Pittsburg to the Rocky Mountains, performed in the years 1819-20: compiled by Edward James. Vol. 1, 503 pp., vol. 2, 422 pp., atlas of 11 sheets, 1823.

Lord, N. W.

1. Exi)erimental work conducted in the chemical laboratory

of the United States fuel-testing plant at St. Louis, Missouri, Jan. 1st, 1905, to July 31st, 1906. U. S. Geol Surv., Bull. .323, 43 pp., 1907. One coal from Colorado tested.

2. Analyses of coals in the United States, with description

of mine and field samples collected between July 1,

1904, and June 30. 1910. Bureau of Mines. Bull. 22,

1200 I)])., 1913.

Part I. Analyses and fuel values, value of analyses, laboratory methods, interpretation of analyses. Part II. Description of samples. Colorado coals by counties: pp. 54 to 82, and 397 to 489.

Loughlin, G. F.

1. Ore dej)osirion at Asi)en. lOc (Jeol., vol. 4, 658-660,

Lowardy, L. D.

1. Unwateriu tlie silver mines of Aspen. M. Sci., vol. 63, pp. 388-390, II lust., 1911.

202 HmLIORAPHY OF COLORADO GEOLOGY

Lowther, W. H., and Knowles, R. R.

1. The niinoral waters of Steamboat Springs. W. Chem. and

Met., vol. 6, pp. 60-65, 1910.

Gives table of analyses from 12 springs, temperature, rate of flow, and other data.

Lucas, F. A.

1. A new genus of Dinosauria from Colorado. Am. Nat.,

vol. 12, pp. 188-189, 1878.

2. Contributions to paleontology. Am. Jour. Sol., 4th ser.,

vol. 6, p. 399, 1898.

3. The dinosaur Trachodon annecteus. Smith. Inst., Misc.

Col., (Quarterly Issue), vol. 45, pp. 317-320, Ilhist.,

LuU, R. S.

1. Diuosaurian distribution. Am. Jour. Sci., 4th ser., vol.

29, pp. 1-39, 1 1 lust., 1910.

2. The armor of Stegosaurus. Am. Jour. Sci., 4th ser., vol.

29, pp. 201-210, must., 1910.

Lund, P. H.

1. The Green Mountain Lode and Placer property, near Alma. Mg. Investor, vol. 62, pp. 238-241, 1911.

Macfarlane, James.

1. The coal I'Ogions of America. D. Appleton and Company,

1873. (See Pop. Sci. Monthly, vol. 3. p. 394.)

Ch. 29, pp. 529-560, deals with Cretaceous coals and coal regions of the Rocky Mountains in Colorado and Wyoming.

Mackintosh, J. B., and Hidden, W. E.

1. On the composition of the fayalite from Cheyenne Moun- tain. Am. Jour. Sci., 3rd ser., vol. 41. p. 439, 1891.

MacOregor, F. S.

1. Electrostatic separation in the San Juan district. (Eureka). ]\rg. Sci., vol. Of), p. 448, 1912.

MacMechen, Thomas R.

1. The ore deposits of Creede. E. and M. J., vol. 53, pp.

301-303, 1892.

Descril)es the geologic formations of the region and the nature and extent of the ore bodies.

2. (Condition of mining industry in 1892. 10. and f. J., vol.

55, p. 103, 1893.

Bibliography Of Colorado Gkology 203

Magenau, Wm.

1. Present day methods of analysis and assay of cyanide

mill solutions and products. Colo. Sell. Mines, Bull.,

vol. 1, pp. 17-34, 1900.

Cripple Creek milling methods described.

Major, C. J. Forsyth.

1. On fossil and recent Lagomorpha. Linn. Soc. London, Trans., yol. 7, pp. 433-520, Illust, 1899.

HaUet, E. J.

1. On Middle Park mineral coal. Am. Jour. Sci., 3rd ser., vol. 9, pp. 146-147, 1875.

MaUy, E. B.

1. Section of strata in shaft fourteen miles east of Denver.

Haydeh Surv., 7th Ann. Kept., p. 121, 1874.

This occupies about a half page in Marvine's report as Assistant Geologist directing the Middle Park division.

Blarcou, J. B.

1. Bibliography of publications relating to the collection of

fossil invertebrates in the United States National Museum. U. S. Nat. Mus., Bull., vol. 30, 333 pp. 1885.

2. North American paleontology for 1886. Smith. Inst.,

Kept. 1887, pp. 231-287, 1SS7.

Marcou, J., and Marcou, J. B.

1. Mapateca Oeologica Americana : a catalogue of geological maps of America (North and South), 1752-1881, in geographic and chronologic order. U. S. Geol. Surv., Bull. 7, 184 pp., 1884.

Harcou, Jules.

1. Geological map of the United Slates and British prov- inces of North America (with explanatory text and geological sections. 02 pages, Illust., Boston, 1853. Soc. Geol. France, Bull., 2nd ser., vol. 12, pp. 813-936, map, plate; Map in atlas to Voyage dans TAmerique du Nord, Bruxelles, G. Lambert, 1855; Annales des Mines, vol. 7, p. 320, plate IX; Geology of North America, Zurich, 1858; **Layie souterraine, ou les mines et les mineurs/' Paris, i>la(es X, XI, XIV, L. Simonin, 18G7; Physicalische Karten, Geology," Vienna, 1872. RevieNved in : Am. Jour. Sci., 2nd ser., vol. 22 pp. 383-388; vol. 17, pp. 199-206.

204 Bibliography Of Colorado Geology

Marcou, Jules — Continued.

2. Ueber die Geologie der Vereinigten Staaten und der

englisehen Provinzen von Nord-Amerika. Peter- mann's Mitt., vol. 1, pp. 149-159, map, 1855.

3. Geology of North America, with two reports on the

prairies of Arkansas and Texas, the Rocky Moun- tains of New Mexico, and the Sierra Nevada of Cal- ifornia, originally made by the United States Gov- ernment. 144 pp. lllust., maps, Zurich, 1858. Re- views: Am. Jour. Sci., 2nd ser., vol. 2G, pp. 323-324, 1858; vol. 27, pp. 134-137, 1859.

4. Geologische Uebersichtskarten der Erde nach Marcou.

Phvsikalische Karten. Vienna, 1872.

Marsh, Othniel C.

1. Discover' of the Mauvaises Terres formation in Colo-

rado. Am. Jour. Sci., 2nd sor., vol. 50, p. 292, 1870. Reprint: Canadian Naturalist, vol. 5, p. 240, 1871.

2. Ancient lake basins of the Rocky Mountain region. Am.

Jour. Sci., 3rd ser., vol. 9, pp. 49-52, 1875. Abstract: Am. Nat., vol. 9, p. 119, 1875.

3. Notice of a new gigantic dinosaur. (Titanosaurus mon-

tanus.) Am. Jour. Sci., 3rd por., vol. 14, pp. 87-88, 1877. Reprint: Jour, do Zool. vol. 6, pp. 248-250,

4. Notice of some now vertebrate fossils. Am. Jour. Sci.,

3rd ser., vol. 14, pp. 249-256, lllust., 1877.

5. Introduction and succession of vertebrate life in America.

Am. Jour. Sci., 3rd ser., vol. 14, pp. 337-378, 1877; Am. Assoc, Adv. Sci., Proc, 1877, pp. 211-258, 1878.

0. A no\y order of extinct Ri?ptilia (Slegosauria) from the Jurassic of the Rocky Mountains. Am. Jour. Sci., 3rd ser., vol. 14, pp. 513-514, 1877.

7. Notice of now dinosaurian reptiles from the Jurassic

formation. Am. Jour. Sci., 3rd sor.. vol. 14, pp. 514- 51G, 1877.

8. New si>ecies of (Vratodus from the -lurassic. Aul Jour.

Sci., 3rd ser., vol. 15, j). 7(5, 1878.

9. Notice of new dinosaurian I'cptiles. Aul Jour. Sci., 3rd

ser., vol. 15, pp. 241-244, lllust, 1878.

Bibliography Of Colorado Geology '205

Marsh, Othniel C. — Continued.

10. Principal characters of American Jurassic dinosaurs.

Part I. Am. Jour. Sci., 3rd ser., vol. 16, pp. 411-416, must., 1878.

11. A new order of extinct reptiles (Sauranodonta) from

the Jurassic formation of the Rocky Mountains. Am. Jour. Sci., 3rd ser., vol. 17, pp. 85-86, 1879.

12. Principal characters of American Jurassic dinosaurs.

Part II. Am. Jour. Sci., 3rd ser., vol. 17, pp. 86-92, Illust., 1879.

13. Additional characters of the Sauropoda. Am. Jour. Sci.,

3rd ser., vol. 17, pp. 181-182, 1879.

14. Notice of a new Jurassic mammal. Am. Jour. Sci., 3rd

ser., vol. 18, pp. 60-61, 1879.

Describes the lower jaw found in the Atlantosaurus beds of the Rocky Mountains, state not given.

15. Additional remains of Jurassic mammals. Am. Jour.

Sci., 3rd ser., vol. 18, pp. 215-216, Illust, 1879.

Describes three lower jaws from Atlantosaurus beds of the Rocky Mountains, state not given.

16. Notice of new Jurassic reptiles. Am. Jour. Sci., 3rd ser.,

vol. 18, pp. 501-505, Illust., 1879.

Description of dinosaurs from Rocky Mountains, spe- cific locality not given.

17. Principal characters of American Jurassic dinosaurs.

Part V. Am. Jour. Sci., 3rd ser., vol. 21, pp. 417-423, Illust., 1881.

18. Principal characters of American Jurassic dinosaurs.

Part VII. On Diplodocisae, a new family of the

Sauropoda. Am. Jour. Sri., 3rd ser., vol. 27, pp. 161-

167, Illust., 1884.

Describes specimen from near Canon City.

19. Principal characters of American Jurassic dinosaurs.

Part VIII. The order Theropoda. Am. Jour. Sci., 3rd ser., vol. 27, pp. 329-340, Illust., 1884.

20. On the classification and affinities of dinosaurian rep-

tiles. Brit. Assoc. Adv. Sci., vol. 54, pp. 763-766, 1884. Abstract: Science, vol. 6, p. 261, 1884.

21. Gigantic mammals of the order of Dinocerata. U. S.

Geol. Surv., 5th Ann. Rept., pp. 243-302, Illust., map,

Describes fossils from the Rocky Mountain region.

206 Bibliography Of Colorado Geology

Marsh, Othniel C. — Continued.

22. American Jurassic mammals. Am. Jour. Sci., 3rd ser.,

vol. 33, pp. 327-348, Illust., 1887; Geol. Mag., dec. 3,

vol. 4, pp. 242-247, 289-299, Illust., 1887.

Description of fossils from the Atlantosaurus beds.

23. Notice of new fossil mammals. Am. Jour. Sci., 3rd ser.,

vol. 34, pp. 323-331, Illust., 1887.

Describes a number of new species from the Tertiary formations east of the Rocky Mountains.

24. Principal characters of American Jurassic dinosaurs.

Part IX. The skull and dermal armor of Stego-

saurus. Am. Jour. Sci., 3rd ser., vol. 34, pp. 413-417,

Illust., 1887.

Describes a fossil from the Atlantosaurus beds of the Upper Jurassic, in southern Colorado.

25. The skull and dermal armor of Stegosaurus. Geol. Mag.,

dec. 3, vol. 5, pp. 11-15, Illust., 1888.

26. A new family of horned dinosaurs from the Ci*etaceous.

Am. Jour. Sci., 3rd ser., vol. 36, pp. 477-478, Illust.,

27. Comparison of the principal forms of the Dinosauria of

Europe and America. Am. Jour. Sci., 3rd ser., vol. 37, pp. 323-331, 1889; Geol. Mag., dec. 3, vol. 6, pp. 204-210, 1889.

28. Notice of new American dinosaui'S. Am. Jour. Sci., 3rd

ser., vol. 37, pp. 331-336, Illust., 1889.

29. Notice of gigantic horned Dinosauria from the Cretaceous.

Am. Jour. Sci., 3rd ser., vol. 38, pp. 173-176, 1889.

30. Discovery of Cretaceous Mammalia. Part II. Am. Jour.

Sci., 3rd ser., vol. 38, pp. 177-180, Illust., 1889.

31. Description of new dinosaurian I'eptiles. (Cretaceous,

Laramie.) Am. J6ur. Sci., 3rd ser., vol. 39, pp. 81- 86, Illust., 1890.

32. Distinctive characters of the order Hallopoda. Am. Jour.

Sci., 3rd ser., vol. 39, pp. 415-417, Illust., 1890.

33. The gigantic Ceratopsidae, or horned dinosaurs of North

America. Am. Jour. Sci., 3rd ser., vol. 41, pp. 167-178, Illust., 1891.

34. Restoration of Stegosaurus. Am. Jour. Sci., 3rd ser.,

vol. 42, pp. 179-181, Illust., 1891.

Although the type specimen was found in Wyoming, the paper is supplementary to a paper describing Colo- rado specimens.

Hibliography Of Colorado Geology 20

Oat

Marsh, Othniel C. — Continued.

35. Geological horizons as determined by vertebrate fossils.

Am. Jour. Sei., 3rd ser., vol. 42. pp. 336-338, Illust,

Abstract of paper read before International Geological Congress, 1891.

36. The skull of Torosaurus. Am. Jour. Sci., 3rd ser., vol.

43, pp. 81-84, Illust., 1802.

37. Discovery of Cretaceous Mammalia. Part III. Am.

Jour. Sci., 3rd ser., vol. 43, pp. 240-262, 1892.

38. Notice of new reptiles from the Laramie formation. Am.

Jour. Sci., 3rd ser., vol. 43. pp. 449-453, Illust, 1892.

39. Notes on Mesozoic vei'tebrate fossils. Am. Jour. Sci.,

3rd ser., vol. 44, pp. 171-176, Illust., 1892.

40. Restoration of Claosaurus and Cerotosaurus. Am. Jour.

Sci., 3rd ser., vol. 44, pp. 343-350, Illust., 1892.

41. Description of Miocene Mammalia. Am. Jour. Sci., 3rd

ser., vol. 4(;, pp. 407-412, Illust., 1893.

42. Restorations of Anchisaurus, Ceratosaurus, and Clao-

saurus. Geol. Mag., 3, vol. 10, pp. 150-157 Illust., 1893.

43. Restoration of Elotherium. Geol. Mag., dec. 4, vol. 1,

pp. 294-295, Illust, 1804; Am. Jour. Sci., 3rd ser.,

vol. 47, appendix, pp. 407-408, Illust., 1894.

Type specimen discovered in northern Colorado.

44. The typical Ornithopoda of the American Jurassic. Am.

Jour. Sci., 3rd ser., vol. 48, pp. 85-90, Illust, 1894.

45. The Dinosaurs of North America. U. S. Geol. Surv., 16th

Ann. Rept, pt. I, pp. 133-414, Illust., 1896.

Illustrates and describes fossils from Colorado.

46. Vertebrate fossils, Denver Hasiu. U. S. Geol. Surv.,

Mon. 27, pp. 473-527, Illust, 1896.

47. A provisional classification of the fr<'sh-water Tertiary

of the west Am. Nat. Hist., Bull., vol. 12, pp. 19-75, 1800.

Marshall, R. B.

1. Results of sjjirit leveling in Colorado 180() to 1010, in- clusive. V. S. Geol. Surv., Bull. 486, 106 pp., Ilhist,

208 BIBLIOGRAPHY OF COLOEtADO GEOLOGY

Illarshall, R. B.— Continued.

2. Results of triangulation and primary traverse for the years 1909-10. U. S. Geol. Surv., Bull. 496, pp. 39-46,

Gives results of work in Breckenridge special, Come, Georgetown, James Peak, Leadville and Mount Powell quadrangles.

Marshall, William L.

1. Executive report, Corps of Engineers, on the operations

of party no. 1, division 1, field season of 1874.

Wheeler Suit., Ann. Rept. Appendix LL, pp. 37-40,

Describes methods of work and territory covered in southern Colorado.

2. Meteorology and hypsoraetry, field season of 1874.

Wheeler Surv., Ann. Rept. Ap[)endix LL., pp. 47-60,

Includes table of comparisons of aneroid with mer- curial barometers and curve showing effects of tempera- ture upon aneroid barometers.

3. Executive and descriptive report of Lieut. Wm. L. Mar-

shall, Corps of Engineers, on the operations of party no. 1, Colorado section, field season of 1875. Wheeler

Surv., Ann. Rept. Api)endix JJ., pp. 80-109, 1876.

Contains notes on the topography, geology, and mines of the southern part of Colorado.

Martin, G. C.

1. The Niobrara limestone of northern Colorado as a pos-

sible source of Portland cement material. TJ. S.

Geol. Surv., Bull. 380, pp. 314-326, map, 1909.

Deposits of Boulder and Larimer counties described.

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Marvine, Archibald R.

1. Report of Assistant Geologist, dinnting the Middle Park

division. Hayden Surv., Ttli Ann. Rept., pp. 83-192,

Illust., maps, 1ST4.

Ch. I. Area, natural divisions, and principal topo- graphical features. Principal topographical features of main divide, eastern geological divisions. Ch. II. The sedimentary rocl<s east of the Front Range. The Trias. Jurassic (with section by Hayden and Wm. H. Holmes). The Cretaceous Nos. 1, 2, 3, 4, and 5, with sections. The

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Marvine, Archibald R. — Continued.

Triassic beds. The Lignitic formation. Section of the Llgnitic strata at Golden, by E. L. Berthoud. Section of artesian well near Denver, by Eli Brooks. The coal series. Characters and applications of the Lignitic coals. Proximate analyses of western Lignitic coals. Ultimate analyses of western Lignitic coals adopted from R. W. Raymond. Physical characters of the Lignitic coals of the Plains. Distribution and developments of the Lig- nitic coal. The various coal openings. Section of strata in shaft, fourteen miles east of Denver, by E. B. Mally. Section of the Lignitic beds at the Marshall mine, by F. V. Hayden, 1869. Post-Lignitic formations. The eruptive rocks of the plains. General structural features of the mountain-border region. Ch. III. The metamor- phic crystalline rocks of the mountains. The stratig- raphy of the east slope ©f the Front Range. Ch. IV. The Middle Park. Cretaceous formation of Middle Park. Doleritic breccia. Lignitic formation of the Park. Lake- beds of the Middle Park, glacial. The valley of the Upper Grand. Frazier basin. Region in vicinity of the Hot springs. Sections of Cretaceous no. 1. Non-con- formity at the Hot Springs. Williams River valley. Northern Lignitic area. Lower Troublesome Valley. Valley of the Blue River. Park Range and Blue River Mountains. Blue River or Mount Powell group. South- ern end of the Williams River Range.

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Discusses geography, structural features, origin of granite dikes and ores.

Marvine, Archibald R., Peale, A. C.,Endlich, F. M., and White, C. A.

1. Map and sections, northwestern Colorado and part of Utah. Hayden ., Atlas of Colorado, folio, 1881.

Mathews, Edward B.

1. The granites of Pikes Peak. (Jeol. Soc. Am., Bull., vol.

G, pp. 471-473, 1805.

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Descrll>es the character, occurrence, and distribution of the granites of the region.

210 Bibliography Of Colorado Geology

Mathez, A.

1. Gold mining in Gilpin County. A. I. M. E., Trans., vol.

17, pp. 541-542, 1888.

Discussion under "Gold-milling in the Black Hills'* by H. O. Hoffman, pp. 498-542.

Matson, George 0.

1. Mineral waters. U. S. Geol. Surv., Min. Res. 1910, pt.

II, p. 933, 1912; U. S. Geol. ., Min. Res. 1911,

pt. II, p. 1137, 1913.

Colorado reference, p. 1149. Lists fourteen springs.

Matteson, W. G.

1. Common features of silver districts. Mines and Minerals,

vol. 32, pp. 20G-208, Illust., 1911.

Discusses leadville and Aspen ore deposits.

2. Minerals common to silver deposits. (Leadville and

Aspen.) Mines and Minerals, vol. 32, pp. 438-440, Illust., 1912.

3. Genesis of silver deposits. (Leadville and Aspen.)

Mines and Minerals, vol. 32, pp. 504-506, 1912.

Matthew, W. D:

la. Is the White River Tertiary an Aeolian formation? Am. Nat., vol. 33, pp. 403-408, 1809.

1. A provisional classificalion of the fresh water Tertiary

of the west. Am. Mus. Nat. Hist., Bull., vol. 12, p. 19-77, 1900.

2. Fossil mammals of the Tertiary of northeastern Colo-

rado. Am. Mus. Nat. Hist., Mem., vol. 1, pt. 7, pp.

355-447, Illust., 1901.

Describes character and occurrence of Tertiary beds in Colorado and the vertebrate fauna obtained from them.

3. New Canidae from (he Miocene of Colorado. Am. Mus.

Nat. Hist., Bull., vol. IG, pp. 281-290, Illust., 1902.

4. A horned rodent from Ihe Colorado Miocene. With a re-

vision of the Mylajauli, l)eavers and hares of the American Terliarv. Am. Mus. Nat. Hist.. Bull., vol. 10, pp. 291-310, Illust., 1902.

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t

Geol. Surv., Bull. 301, 138 pp., 1909.

IUBLIOC;UAlHY OF COLOHADO OEOLOGY 211

Maynard, George W.

1. Early days in Colorado. M. and Sci. Pi-ess, vol. 98, pp. 780-702, 1000.

McCarn, II. L.

1. Notes on the geology of the gold field of Cripple Creek.

Science, vol. 23, pp. 31-35, 1894.

Describes the structure of the ore bodies and discusses the evidence as to their origin.

2. Pine Creek district. Gilpin County. Mg. and Sci. Press,

vol. 73, p. 173, 1806.

Describes the general geology of the region and the occurrence and character of the gold ores.

McCaskey, H. D.

1. Gold and silver. U. S. (leol. ., Min. Res. 1910, pt. I, pp. 134-135, 1012 ; U. S. Geol. 8urv., Min. Res. 1911, pt. I, pp. 211-254, 1912.

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17, p. 407, 1870. Extract from Lieut. McCauley 's re- port to the Secretary of War, vol. 8, p. 27, Feb., 1870.

McClave, James M. 1. Milling the Tam O'Shauter ore. (At Ashcroft.) Mines and Minerals, vol. 32, pp. 402-404, Illust., 1012.

McClelland, J. F.

1. Methods of renewing old timbering at the Dives-Pelican mine. Silver Plume. Columbia Sch. Mines Quart., vol. 26, pp. 48-01, 1004-5.

212 Bibliography Of Colorado Geology

McCook, H. C.

1. American spiders and their spinning work. 2 vol., 852

pp. Illust, 1889-1890.

Colorado reference: vol. 2, p. 6, fossil spiders; pp. 446-469.

McConneU, I. W.

1. Topographic work in the Grand Canyon of the Gunnison. U. S. Geol. Surv., W. S. Paper 93, pp. 162-167, 1904.

McLaughlin, Frank.

1. The Tempest-Apex mill at Ouray. Mg. Kept., vol. 53, pp. 410-411, Illust., 1906.

McLaughlin, J. E.

1. Barela Mesa coal field. Mines and Minerals, vol. 24, p.

139, Illust., 1903.

Describes the occurrence and character of the coal seams, and gives a section of the associated strata.

McLeod, R. F.

1. Draining downtown district of Leadville. Ores and Metals, vol. 15, no. 19, pp. 12-13, 1906.

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1. Some Colorado coal mines. Mg. Ind., vol. 1, pp. 7-8, cont.,

Discussion of Crested Butte, Park County, La Plata and Gunnison County coal fields.

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Production of coal, 1873-1888, by counties for 1887-8. Description of mines in Las Animas, Fremont, Boulder, Huerfano, Gunnison. Weld. Kl Paso, Park, Arapahoe counties.

4. Fourth biennial report of the state inspector of coal mines,

for the years of 1889-1890.

Coal production, 1873-1900, by counties, 1889-1890. Coke production, 1889-1890. Fatal accidents. Description of mines in Las Animas, Huerfano, Fremont, Gunnison, Boulder, Garfield, Pitkin, Park, Weld, La Plata, Jefferson counties. Analyses of coal from each county. Descrip- tion of Coal Creek field with analysis of coal.

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Meade, Frank.

1. Coal mines of Pictoii. Mines and Mineral, vol. 21, pp. 1-3, must., 1900.

Means, Thomas H.

1. A reconnoissanee in the Cache la Poudre Valley. U. S. Dept. Agr., Kept. no. 64, Div. Soils, Field Operations, 1899, pp. 121-124, 1900.

Meek, F. B.

1. Preliminary paleontological report. Hayden Surv., 4th

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Describes some new types and gives list of fossils, In part from Colorado.

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Juan exploring exjiedition under Capt. J. N. Macomb. Report of exploring expedition from Santa Fe, New Mexico, to junction of the Grand and Green rivers in 1859. Pp. 119-148, Illust., 1870.

Includes descriptions of a few fossils collected in Colorado.

4a. A report on the invertebrate Cretaceous and Tertiary fossils of the upper Missouri country. Hayden Surv., Mon., 9, 629 pp., Illust., 1S7G. Abstract: Am. Jour. Sci., 3rd ser., vol. 13, pp. 145-147, 1876.

214 Bibliography Of Colorado Geology

Meek, F. B.— Continued.

5. ( -relaceous fossils. King Surv., Mon., vol. 4, Paleontolog,y

and Ornithology, pp. 140-163, Illust., 1877.

Includes description of a few specimens collected in

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Illust, 1877. 7. Certain Tertiary mollusks from Colorado, Utah and

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1. Surface water supply of the Missouri River drainage, 1906. U. S. Geol. Surv., W. S. Paper 209, pp. 24-34,

Stream measurements of the Arkansas and Purgatory rivers.

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1. Surface water supply of Colorado drainage above Yuma,

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1. Destructive floods in the United States, 1904. U. S. Geol.

Surv., W. S. Paper 147, 1905.

Denver district, Cache la Poudre, Crow Creek, Purga- tory, La Plata. Discussion of causes of floods.

Meister, H. C.

1. The zinc smelting industry of the middle west. A. I. M. E., Trans., vol. 3., pp.' 743-745, 1904.

MelviUe, W. H.

1. Diaspore crystals. (From Rosita Hills) Am. Jour. Sci., 3rd ser., vol. 41, pp. 475-477, Illust., 1891.

Merriam, L. B.

1. The development of a new coal field in Colorado. W. Soc. Eng., Jour., vol. 8, no. 6, pp. 617-639, Illust., 1903.

Merrick, G. G.

1. Does Iadville ccmtact continue into Summit County? Mg. Rept., vol. 42, p. 131, Illust, 1900.

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Merrill, George P.

1. Building stones. 10th Census of the U. S., Part X, pp.

15-29, and 35-37, 1884.

2. Petrography for 1887-8. Smith. Inst., Kept. 1888, pp. 327-

354, 1888.

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United States National Museum : a handbook and cat- alogue. Index. U. S. Nat. Mus., Ann. Kept., 1886,

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In Part I, pp. 285-356, the author discusses minerals of building stones, physical and chemical properties of rocks, machine working, weathering of building stones, selective methods of preservation. Part II, pp. 375-472, is a description of the rocks, quarries, and quarry regions of the United States. This part Includes brief (fescrip- tions of Colorado marbles, limestones, granites, diorite, sandstone, and rhyolite tuff. Part III deals with stones of other countries.

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1. Clay-working industries. U. S. Geol. Surv., Miu. Res.

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Milch, L.

1. Uebor den Kaolinit von dor National Belle Mine bei Silver, ton. CVntralbl. Mineral., etc. no. 1, pp. 1-3, 1908.

Miller, G. W.

1. The various mining districts of Colorado. Mg. Sci., vol. 57, pp. 462, 507, 532, 549, Illust, 1908; vol. 58, pp. 128, 207, 228, 246, 1909.

Descriptions of different mining camps, their history, geology, ores, methods of mining and ore treatment. Cripple Creek and IadvlHe.

Miller, S. A.

1. North American Mesozoic and Cenozoic geology and pah ontology*. Cincinnati Soc. Nat. Hist., Jour., vol. 2, pp. 140-161, 223-244, 1879; vol. 3, pp. 9-32, 79-118, 165-202, S45-288, 1880; vol. 4, pp. 3-46, 93-144, 183-234, 1881 ; also issued in one voloumer 338 pp., 1881.

Mills, Enos A.

1. Canyon in Ice. Outdoor Life, December, 1898.

Figures HaUett glacier.

2. The story of ICstes Park and a guide book. Denver, Out-

door Life Ihiblishing Company, 1905.

3. Wild life in the Kockies. Boston and New York, Hough-

ton, Mifflin Company, 1909.

Especial references to glaciation on pages 234 and 243.

Mills, J. E.

1. Binders for coal briquetts. (Investigation made at the fuel-testing plant, St. Louis, Missouri.) U. S. Geol. Surv.. Bull. 84.*], 5fi pp., 190S.

Miner, F. L.

1. Clear Creek County, (leorgctown mines desci'ibed. Mg. Kept, vol. 45, pp. 42. 44, 1902.

Mineralogical Magazine of Mineralogical Society of London.

I. Mineral references from Colorado. Amphibole and pyroxene minerals, secondary, vol. 9, p. 249; Arago- nlte, alteraticm to calcite, vol. 7, p. VIII; Arfvedso- nite, vol. 1, p. 2():j; Astrophyllite, vol. 1, p. 263; Bastnasitc, vol. 9, p. 394: Beegerite, Park County, vol. 5, p. Ill : Columbite, vol. 1, p. 1S9; Crystal Park, minerals from, vol. 9, 394 : Kvansite, vol. 4, p. XVII ; Ferroti lluritc, vol. 1, p. 207; Garnet in rhyolite, vol. 7, p. 115; Hornblende, secondary, vol. 9, p. 249; Hy-

Biblioghai'Hy Of Colorado Geology 217

Mineralogical Magazine of Mineralogical Society of London — Continued.

drophane, vol. 8, p. 181; Kovstone mine, minerals of, vol. 1, p. 267; Kobellite, vol. 7, p. 117; Magnolite, vol. 1, p. 267; Nathrop, rhyolite, vol. 7, p. 115; Roscollite, vol. 2, p. 55; Smaltite, vol. 5, p. 113; Staffelite, vol. 3, p. 107; Topaz, vol. 7, p. 115; Tourmaline, vol. 8, p. 290; Tysonite, vol. 9, p. 394; Zircon, vol. 1, p. 263.

IMQnerals.

1. An example of erosion, Garden of the Gods, Manitou. Minerals, vol. 1, p. 92.

Mines and Minerals.

1. The Liberty Bell mine. Mines and Minerals, vol. 21, p.

399, Illust., 1901.

2. The Sunnj'side mines of San Juan. Mines and Minerals,

vol. 24, p. 91, 1903.

3. Colorado coal mines in 1906. Mines and Minerals, vol.

27, p. 430, 1907.

4. The Old Hundred mine and mill, Ilowardsville. Minos

and Minerals, vol. 27, pp. 390-395, Illust, 1907.

5. The Primero disaster. Mines and Minerals, vol. 30, pp.

463-470, 600, 1910.

6. Coal mining at Primero. Mines and Minerals, vol. 30, pp.

598-599, Illust., 1910.

7. Coal fields of southern Colorado. Mines and Minerals,

vol. 30, pp. r)SS-5S9, Illust., 1910.

8. Handling tailings at Colorado City. Mines and

Minerals, vol. 30, pp. 621-624, Illust., 1910.

9. The Starkville explosion. Mines and Minerals, vol. 31,

pp. 261-263, Illust., 1910.

10. Portland mine and mills. Klines and Minerals, vol. 32,

pp. 562-563, Illust., 1912.

11. The Hastings coal mine disaster. Mines and Minerals,

vol. 32, pp. 9-11, 1912.

Mines and Mining.

1. Uranium and vanadium in Montrose ('ouiity. Mines and

Mining, vol. p. 26, 1902.

2. Production of gold, silver, lea<l, copper, and zinc by coun-

ties, 1902. Mines and Mining, vol. 7, p. 14, 1903. List of mines paying dividends.

218 BIBLIOGRAPHY OF OOLORAnO GKOLOOY

Mines and Mining— Continued.

'5. Colorado production for 1J)04. Mines and Mining, vol.

10, p. 4, 1904.

Lead, copper, zinc, gold, silver and coal by counties.

4. Bismutli and tungsten in San Juan County. Mines and

Mining, vol. 11, no. 7, p. 33; 190G.

5. Cannon City plant of the Empire Zinc Company. Mines

and Mining, vol. 15, no. 23, pp. 3-4, 1908.

Mining Industry.

1. Colorado mining and smelting for 1887. Mg. Ind., vol. 1,

pp. 6-10, 1887.

Discussion of districts producing lead, copper, gold and silver.

2. San Miguel gold placers. Mg. Ind., vol. 2, pp. 8-10, Illust,

3. A theory for the Colorado limestone ore deposits. Mg.

Ind., vol. 4, p. 154, 1889.

4. Gilpin County mines and mining. Mg. Ind. and Trades-

man, vol. 9, pp. 43-48, Illust., 1891.

History of mining in county, description of ore depos- its, and description of mines.

5. Summit County. Mg. Ind. and Tradesman, vol. 9, pp. 88-

91, 1891.

History of mining in the district, ore deposits de- scribed.

6. Colorado stone quarries. Mg. Ind., vol. 7, p. 128, 1891.

Building stone by counties.

7. Breckenridge and Summit counties gold deposits. Mg.

Ind. and Rept., vols. 12 and 13, pp. 15-18, Illust.,

8. Dioxide-cyanide process. Mg. Ind. and Rept., vol. 14, pp.

19-20f 1897.

Mills at Florence, Creede and Cripple Creek described.

9. Colorado, past and present. Mg. Ind. and Rev., vol. 20, p.

288, 1898.

Summary of production, 1870-1896, of lead, silver, gold, copper, and account of work done by counties.

Mining Investor.

1. New era for Boulder County. Mg. Investor, vol. 33, pp.

185-222, Illust., 1903.

Description of mines and oil field.

2. The Cripple district. Mg. Investor, vol. 34, p. 204,

cont., Illust., 1904.

Bibliography Of Colorado Geology 219

Hilling Investor— Continued.

3. In the Salt Creek basin of the Florence oil field. Mg.

Investor, vol. 34, pp. 214-210, Illust., 1904.

4. The San Jnan mines. Mg. Investor, vol. 34, p. 224, cont.;

vol. 35, pp. 223-226, Illust., 1904.

Milling Magazine.

1. The Colorado labor troubles. Mg. Mag., vol. 10, pp. 68-71,

2. Smelter rates in Central Colorado. Mg. Mag., vol. 12, p.

216, 1905.

Milling Reporter.

1. A revival of Caribou. Mg. Kept., vol. 38, p. 11, July 7,

2. Modern placer* mining. Mg. Kept., vol. 38, p. 11, Sept. 1,

Description of placer mining on South Boulder, Clear Creek, Breckenride, and Chaffee Counties.

3. Colorado mineral production for 1898. Mg. Rpt., vol. 39,

p. 11, Jan. 5, 1899.

4. The Summit County placers. Mg. Kept., vol. 39, p. 15,

Illust, Feb. 2, 1899.

Description of Breckenridge placers.

5. Gold dredging in Summit County. Mg. Rept., vol. 39, pp.

15-16, May 11, 1889.

6. Bob Tail Hill, Gilpin County. Mg. ., vol. 39, p. 16,'

Illust, June 15, 1899.

7. The mineral resources of Boulder County. Mg. Rept., vol.

40, p. 16, Illust, July 13, 1899.

A continued article discussing the history of Boulder County and giving a detailed description of its mines.

8. A Boulder County mine. (Standard mine, Jamestown.)

Mg. Rept, vot 41, pp. 124-125, Illust., Mch. 1, 1900.

9. Zinc smelter at Canon City. Mg. Rept., vol. 42, pp. 96-97,

Illust, 1900.

10. The mines of Telluride. Mg. Rept., vol. 42, p. 146, Illust.,

11. The silver mines of Pitkin. Mg. Rept., vol. 42, p. 163,

Illust, 1900.

12. Battle Mountain. Mg. Rept., vol. 42, i>p. 19G-197, 1900.

13. The Twin Lakes placer region, Caclu* Crook. Mg. Rept.,

vol. 42, p. 230, Illust, 1900.

14. Tungsten or wolframito. Mg. Roit, vol. 42, p. 248, 1900.

220 Bibliography Of Colorado Geology

Mming Reporter — Continued.

15. Mineral production of Colorado in 11K)0. Mg. Kept., vol.

43, p. 18, cont., 1901.

Summary of production from Leadville, Cripple Creek, Central City, Clear Creek, San Juan, Mineral County. Also summary of production of coal.

16. The Golden Fleece mine. Lake City, Hinsdale County.

Mg. Kept., vol. 43, pp. 154-155, Illust., 1901.

17. The De Lamar district, Idaho. Mg. Kept., vol. 43, p. 388,

Illust., 1901.

Discussion of similar ore deposits in Colorado.

18. unlnlary of output of minerals and metals from differ-

ent counties of Colorado. Mg. Rept., vol. 45, pp. 27,

35, 1902.

Production by counties wi-th description of mines: Mineral, Hinsdale, Gunnison, Summit. Chaffee, Custer, Eagle, Park, Boulder, Dolores, Rio Grande, Pitkin.

19. The Elkton mine equipment. Mg. Rept., vol. 45, pp. 42-

44, 1902.

20. Winfteld, Chaffee County. Description of mines. Mg.

Rept., vol. 45, pp. 51, 52, 1902.

21. Cripple Creek district, production of mines. Mg. Rept.,

vol. 45, pp. 61-64, Illust, 1902.

22. Gilpin County, production of mines. Mg. Rept., vol. 45,

pp. 72-73, 1902.

23. Ouray County, production of mines. Mg. Rept., vol. 45,

pp. 79-80. 1902.

24. Dividends paid by mines in Rocky Mountains region dur-

ing 1901. Mg. Rept., vol. 45, pp. 80-81, 1902.

Boulder, Summit, Teller, Ouray, San Miguel, Ike, Mineral, San Juan, Clear Creek, Pitkin, Gilpin counties mines described.

25. San Miguel C'ounty, production of mines. Mg. Rept., vol.

45, pp. 84-85, 1902.

2(). Coal production, by counties for 1901. Mg. Rept., vol. 45, p. 94, 1902.

27. The mining industry of Gilpin County. Mg. Rept., vol.

45, pp. I.IS-IOO, cont., Illust.. 1902.

History and summary of production, 1859-1901.

28. The Humphreys Mill, Crocdc, Colorado. Mg. Rept., vol.

45, pp. 444-445, 1902.

29. The Ohio and Colorado smelter. Salida. Mg. Rept., vol.

45, p. 472, 1902.

Bibliography Op Colorado Geology 221

Mining Reporter — Continued.

30. Pearl district, mines described. Mg. Kept., vol. 46, pp.

208-210, Illust., 1902.

31. Estimate of minerals and metals from the different

counties of state. Mg. Kept, vol. 47, p. 31, 1903.

32. Rosita gold district. Mg. Kept, vol. 48, pp. 204-205, 1903.

33. Fire clay deposits. Mg. Kept, vol. 48, pp. 645-646, 1903.

34. Colorado metals production for 1903. Mg. Kept., vol. 49,

p. 293, 1904.

Production by counties of gold, silver, lead, copper and zinc.

35. First trip over the Moffat line. Mg. Kept., vol. 49, pp.

029-630, Illust., 1904.

36. The Yampa coal fields. Mg. Rept., vol. 50, pp. 187-188,

Illust., 1904.

37. Review of Colorado mining. Mg. Rept., vol. 50, p. 620,

Illust.. 1904.

38. The tungsten industry of Roulder County. Mg. Rept.,

vol. 51, p. 4, 1905.

39. Milling practice at the Dives-Pelican and Seven-thirty

Company's concentrating mill. Silver Plume. Mg. Rept., vol. 53, pp. 556-557, 1906.

40. Copper in Colorado. Mg. Rept., vol. 54-55, p. 612, cont.,

Production by counties, 1898-1905. La Sal, Paradox district, Montrose, Sedalia, Monarch, Garfield, Chatfee, Pearl, East Beaver, Evergreen-Apex, Morrison.

41. Mills and milling practices at Telluride. Mg. Rept., vol.

54, pp. 286-288, Illust., 1906.

42. Mills and milling practices at Creede. Mg. Rept., vol.

54, pp. 341-343, Illust., 1906.

43. Mills and milling practices at Aspen. Mg. Rept., vol.

54, pp. 410-411, 1906. . 44. Development and transportation tunnel entei'prises in the Argentine district. Mg. Rept., vol. 54, pp. 570- 573, 1906. 45. The zinc industry in Colorado. Mg. Rept., vol. 55, pp. 200-201, cont., 1907.

Mining Review.

1. Ore and bullion produced in Colorado, 1872. Mg. Rev., vol. 1, no. 5, p. 3, 1873.

222 Bibliography Of Colorado Geology

Mining Review — Continued.

2. Occurrence of pitchblende in Gilpin County. Mg. Rev.,

vol. 1, no. 6, p. 2, 1873.

3. Mineral wealth of Colorado, its mines of gold, silver,

copper, and lead. Mg. Rev., vol. 1, no. 10, p. 42, 1873.

4. Colorado ores. Mg. Rev., vol. 1, no. 10, pp. 42-45, 1873.

5. The Mount Lincoln and Bross mines. Mg. Rev., vol.

1, no. 13, p. 3, Illust., 1873.

6. The telluride and bismuth ores of Boulder County. Mg.

Rev., vol. 2, no. 10, pp. 8-9, 1873.

7. Studies in Colorado ore deposits. Mg. Rev., vol. 3,

no. 5, p. 51, cont., 1874.

Mining Science.

1. The Hahns Peak placer gold. Mg. Sci., vol. 60, p. 289,

2. Geology of the Georgetown quadrangle. Mg. Sci., vol.

60, p. 606, 1909.

. Review of geology and petrology of peculiar rocks.

3. Rejuvenation of Chaffee County. Mg. Sci., vol. 62, pp.

393-394, 1910.

4. Gunnison grindstone quarries. Mg. Sci., vol. 62, p.

625, Illust., 1910.

5. Wire gold specimen from Farncomb Hill. Mg. Sci., vol.

64, p. 62, 1911.

6. History of the zinc industry in Colorado. Mg. Sci., vol.

64, pp. 85-86, 1911.

7. Historical review of mine taxation in Colorado. Mg. Sci.,

vol. 63, pp. 256-257, 1911.

8. Radioactivity of Colorado carnotite. Mg. Sci., vol. 65,

p. 313. Illust., 1912.

9. Goldhill bonanza reviewed. Boulder County. Mg. Sci.,

vol. 65, p. 351, 1912.

Mining and Scientific Press.

1. The veins and minerals of Colorado. Mg. and Sci. Press,

vol. 19, p. 306, 1869.

2. The Arizona Diamond fields, Colorado. Mg. Sci.

Press, vol. 25, p. 316, 1872.

3. The diamond swindle. Mg. and Sci. Press, vol. 25, p.

344, 1872.

4. [ount Diablo coal uiines. Mg. and Sci. IM'ess, vol. 27,

p. 50, 1873.

Bibliography Of Colorado Geology 223

Mining and Scientific Press — Continued.

r>. Mining niattors in Colorado, 187r. M;. and Sci. Press, vol. 31, ]K 338, 1875.

G. Leadville's ore shoots. Mg. and Sci. Press, vol. 50, p. 302, 1885.

7. Tieadville: geology of ore deposits. Mg. and Sci. Press,

vol. 57, p. 106, 1888.

8. A Colorado comparison between Cripple Creek and the

Comstock. Mg. and Sci. Press, vol. 73, p. 500, 1896.

9. Some notes on the gcologv' of Leadville. Mg. and Sci.

Press, vol. 78, pp. 536-537, 1899.

10. Mines of Ouray. Mg. and Sci. Iress, vol. 79, p. 545, 1899.

11. Mines of Rico, Dolores county. Mg. and Sci. Press, vol.

81, p. 341, 1900.

12. The Bassick mine, Querida. Mg. and Sci. Press, vol.

90, p. 4, Illust., 1905.

Description of Bassick mine, Custer County, ores, char- coal deposits, and origin of ores.

13. Description of Camp Bird mill. Mg. and Sci. Press, vol.

92, pp. 200 and 242, 1900.

14. Geologic note on the Liberty Bell. Mg. and Sci. Press,

vol. 98, p. 783, 1909.

15. Colorado mining conditions. Mg. and Sci. Press, vol.

101, p. 140, 1910.

16. Colorado's testing plant. Mg. and Sci. Press, vol. 105,

p. 750, 1912.

Mining World.

1. Tungsten industry in Colorado. Mg. World, vol. 27, p.

58, 1907.

2. Carnotite in Colorado. Mg. World, vol. 27, p. 107, 1907.

Deposits of Montrose and Rio Blanco counties described.

3. Carnotite in Colorado. Mg. World, vol. 29, p. 160, 1908.

4. Rangely oil field. Mg. World, vol. 29, p. 314, 1908.

5. Coke making in Colorado and Utah. Mg. World, vol.

29, p. 322, 1908.

6. Lesssons from Stratton's Independence. Mg. World, vol.

32, p. 1225, 1910.

7. The zinc-carbonate discoveries of Leadville. Mg. World,

vol. 33, pp. 1147-1149, 1910.

224 Bibliography Op Colorado Geology

Mining World — Continued.

8. Occurrence, preparation, and uses of vanadium. Mg. and

Eng. World, vol. 35, pp. 191-192, 1911.

Abstract from Bull, of the Imperial Inst Describes deposits at Newmire, Cedar and Placerville, San Miguel County; La Sal Creek, Montrose County; and Coal Creek, near Meeker, and Rio Blanco County.

9. Review of tungsten mining industi'y, 1911. Mg. and Eng.

World, vol. 36, pp. 181-183, 1912.

10. Tiie status of the oil industry in Colorado. Mg. and Eng. World, vol. 3G, pp. 756 and 1292, 1912.

. Minor, J. C, Jr., and Penfleld, S. L.

1. On the chemical composition and related physical prop- erties of topaz. Am. Jour. Sci., 3rd ser., vol. 47, pp. 387-396, 1894. Absti-act: Am. Geol., vol. 13, p. 427,

Minot, C. S.

1. Zur Kenntniss der Insektenhaut. Arch. mikr. Anat., vol. 28, pp. 37-48, Illust., 1886.

Mitchell, Guy Elliott,

1. Landslides and rock avalanches. Nat. Geog. Mag., vol.

21, pp. 277-287, Illust., 1910.

Describes landslides in San Juan.

Mitchell, S. A.

1. Map of Kansas, Nebraska and Colorado, lli/o x 22 inches, Philadelphia, S. A. Mitchell, Jr., 1861. Edi- tions also ill 1865 and 1876.

MoUmann, W.

1. Der Cripple Creek (lolddistrikt. Berg- und Htlttenni. Zeitung, Jg. 61. no. 44, pp. 549-551, 1902.

Montgomery, Henry.

1. Volcanic dust in TTtah and Colorado. Science new ser.,

vol. 1, pp. 656-657, 1895.

Describes the deposits of volcanic dust occurring in the Oquirrh and Wasatch mountains, Utah, and in the Green River region of northwestern Colorado.

Moore, Charles J.

1. The formation of the lieadville mining district, Lake County. Int. Ig. <'ong., 4th session, Proc, pp. T75- 179, 1901.

Bibliography Of Colorado Gkoloot 225

Moore, Charles J. — Continued.

2. The formation of the Cripple Ci'eek mining district, Teller Conntj'. Int. Mg. Cong., 4th session, Proo., pp. 87-91,

Moore, Bichard B., and Kithil, Earl L.

1. A preliminary report on uranium, radium, and vanadium. U. S. Bur. Mines, Bull. 70, 114 pp., Illust., 1913. Bevised edition, 1914.

More, Wm.

1. Denver oil basin. Ores and Metals, vol. 11, no. 21, p. 23, Illust.; vol. 12, no. 10, p. 1; vol. 13, no. 17, p. 32, 1903.

Morgan, Alfred.

1. A review of Hayden's geological and topographical atlas of Colorado, with a sketch of the geology of north- western America. Qeol. So(*. Liverpool, Proc., vol. 4, pp. 1844, 1879.

Morrison, C. C.

1. Executive and descriptive report of Lieut. C. C. Morrison,

Oth Cavalry, on the operations of party no. 2, Colo-

i-ado section, field season of 1875. Wheeler Surv.,

Ann. Bept, Appendix JJ., pp. 136-147, 1876.

Largely descriptive of New Mexico, but contains a few notes on the region near Fort Garland.

Morrisoiiy B. S.

1. The San Juan country. Mg. Bev., vol. 3, no. 3, pp. 27-28, cont, 1874.

Morse, W. S.

1. The lixiviation of silver ores by the Russell proi'ess at Aspen. A. I. M. E., Trans., vol. 25, pp. 137-146, 1895; discussion: pp. 993-997; Min. Tnd. and Tradesman, vol. 15, p. 189, 1897.

Moses, A. J.

1. Crystallized wolframite from Boulder County. Am. Jour.

Sci., 4th ser., vol. 20, pp. 281-282, 1905.

2. New faces on sylvanite crystal from Cripple Creek. Am.

Jour. Sci., 4th ser., vol. 20, pp. 282-283, 1005.

Munroe, H. S.

1. On the weight, fall and speed of stamps. A. I. M. E., Trans., vol. 9, pp. 84-99, 1881.

(8)

226 Bibliography Op Colorado Geology

Munson, G. C.

1. Colorado. Production of gold and silver in the United

States, 1887, pp. 148-194.

Production of mines and smelters by counties.

2. Colorado statistics. Production of gold and silver in

the United States, pp. 94-183, 1888.

List of mines and production by counties.

Murgoci, Q. M.

1. On the genesis of riebeckite and riebeckite rocks. Am.

Jour. Sci., 4th ser., vol. 20, pp. 133-145, 1905.

Preliminary communication read before the Geological Society in Philadelphia, 1904. Mentions the riebeckite rocks of St. Peters Dome, described by Lacroix, and blue amphibole of Silver Cliff, described by Cross.

Murphy, E. C, and others.

1. Destructive floods in the United States in 1904. U. S.

Geol. Surv., W. S. Paper 147, 206 pp. Illust., 1905.

Discusses flood conditions in Denver district. Cache la Poudre, Crow Creek, Purgatory, La Plata.

2. Destructive floods in the United States in 1905. U. S.

Geol. Surv., W. S. Paper 162, 105 pp., Illust, 1906. Discusses flood conditions on Purgatory, Grand, and Gunnison rivers.

Murray, W. F.

1. The operation of a coal washery in Colorado. E. and M.

J., vol. 86, pp. 1248-1250, Illust., 1908.

History of development of coal washery in state, and erection of new plant at Hastings, by the Colorado Fuel and Iron Company.

Nason, Frank L.

1. The geology and vein system of the Mount Wilson mining

district. E. and M. J., vol. 69, pp. 681-682, Illust.,

Describes the general geology of the region and the character of the gold and silver ore bodies.

National Conservation Commission.

1. Papers on the conservation of mineral resources. U. S.

Geol Surv., Bull., 394, 214 pp., maps, Illust., 1909.

(Reprint from report of the National Conservation

Commission, Feb., 1909.)

Map shows distribution of coal fields, petroleum and gas fields of the United States.

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J.W.

1. Breckenridge. Mg. and Sci. Press, vol. 93, pp. 288-289, Illust., 1906.

Nelly Louis.

1. Nell's new topographic and township miap of the state

of Colorado, compiled from the United States Govern- ment Surveys and other authentic sources. 27x38 inches, colored, New York, American Photo Litho. Company, 1880.

2. Township and topographic map of part of the state of

Colorado, exhibiting the San Juan, Gunnison and California mining regions. Compiled from United States Government surveys and other authentic sources. 24x26 inches, colored. Washington, 1880.

3. White River Indian Reservation, Colorado. Published

as supplement to NelPs map of Central and south- western Colorado, to represent the whole area of the Ute Indian reservations. 13 x 14 inches, Washington,

4. New topographic and township map of the state of Colo-

rado. 27x38 inches. Washington, 1881; 18x24 inches. Omaha, The Overland Pub. Co., 1881.

5. New topographic and township map. Prepared expressly

for Crofutt's grip-sack guide of Colorado. 27x38 inches, colored. Washington, 1881.

6. Topographical map of the state of Colorado. Colored,

scale 10 miles to the inch. Denver, Hamilton and Kendrick, 1899.

7. Topographical map of the state of Colorado. Colored,

scale 10 miles to the inch. Denver, Kendrick Book and Stationery Co., 1907.

Nesmith, J. W.

1. Colorado's iron interests. Mg. Ind., vol. 7, pp. 160-162,

Newberry, John S.

la. On circles of deposition in secondary sedimentary rock, American and foreign. New York Lyceum Nat. Hist., Proc, 2nd ser., pp. 122-124, 1874. Discussed by Wurtz and Day, ibid., pp. 124-125, 1874.

1. On the lignites and plant beds of western America. Am. Jour. Sci., 3rd ser., vol. 7, pp. 399404, 1874.

y

228 Bibliography Of Colorado Oboloot

Newberry, John S. — Continued.

2. On the lignite flora of the far west. New York Lyceum

Nat. Hist., Proe., 2nd ser., pp. 78-79, 1874.

3. Geological report. Engineer Department, United States

Army. Report of the exploring expedition from Santa

Fe, New Mexico, to the junction of the Grand and

Green rivers of the Great Colorado of the West in

- 1855, under the command of Capt. J. N. Macomb, pp.

9-118, Illust., map, 1876. Abstract: Am. Jour. Sci.,

3rd ser., vol. 13, pp. 220-221, 1876.

Geology of the route between Independence and Santa F6. Geology of the vicinity of Santa P6. General view of the geology of the country bordering the upper Colo- rado; includes discussion of the structure and age of the Rocky Mountains and description of the Colorado Plateau. Geology of the route from Santa F6 to the Sierra La Plata; includes descriptions of the Rio Grande Valley, Pagosa Springs, San Juan River and Mountains. Geology of the sage-plain and valley of the Upper Colo- rado; contains description of the extreme southwestern part of Colorado. Geology of the banks of the San Juan; contains description of southwestern Colorado.

4. Descriptions of the Carboniferous and Triassic fossils

collected on the San Juan exploring expedition under Capt. J. N. Macomb, 1859. Report of exploring ex- pedition from Santa Fe, New Mexico, to the junction of the Qi'and and Green rivers, pp. 135-148, Illust.,

Includes a few Colorado specimens.

5. The geological survey of the fortieth parallel. Pop. Sci.

Monthly, vol. 15, pp. 302-317, 1879.

5b. Brief descriptions of fossil plants, chiefly Tertiary, from western North America. U. S. Nat. Mus., Proc, vol. 5, pp. 502-514, 1882.

Ti. Geological facts recently observed in Montana, Idaho, Utah, and Colorado. New York Acad. Sci., Trans., vol. 1, pp. 4-8, 1882 ; Science (edited by John Michels), vol. 2, pp. 523-524, 1882.

7. The deposition of ores. Columbia Sch. Mines Quart.,

vol. 5, pp. 329-344, 1884; Sci. Am. Supp., vol. 18, pp. 7123-7124, 1884.

8. On cone-in-cone. Geol. Mag., 3rd dec, vol. 2, pp. 559-560,

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Newbeny, John S. — Continued.

9. North America in the ice period. Pop. Sci. Monthly, vol.

30, pp. 1-11, maps, 1886. Abstract: Am. Jour. Sci.,

3rd ser., vol. 33, p. 77, 1887.

Includes notes on glaciation in various localities in Colorado.

10. Grahamite in Colorado. Mg. Ind., vol. 1, p. 11, 1887.

(From Columbia School of Mines Quarterly.)

11. The oil fields of Colorado. Am. Assoc. Adv. Sci., vol. 37,

pp. 186-187, 1888; E. and M. J., vol. 46, p. 498, 1888.

12. The coals of Colorado. Columbia Sch. Mines Quart., vol.

9, pp. 327-341, 1S88. Abstract: Am. Geol., vol. 2, pp. 429-430, 1888.

13. Marble deposits of the western United States. Columbia

Sch. Mines Quart., vol. 10, pp. 69-72, 1888.

14. Fossil fishes and fossil plants of the Triassic rocks of the

New Jersey and the Connecticut valley. U. S. Geol. Surv., Mon. 14, p. 152, Illust., 1888. One reference to. Colorado fossils.

15. The new oil field of Colorado and its bearing on the ques-

tion of the genesis of petroleum. New York Acad. Sci., Trans., vol. 8, pp. 25-28, 1889. Abstracts : E. and M. J., vol. 46, pp. 498-499 1888; Pop. Sci. Monthly, vol. 34, p. 142, 1888; Am. Assoc. Adv. Sci., Proc, vol. 37, pp. 186-187, 1889; Sci. Am. Suppl., vol. 27, pp. 10948-10949, 1889; Columbia Sch. Mines Quart, vol.

10, pp. 97-102, 1889.

16. Notes on the geolog;' of the Aspen mining district. A. I.

M. E., Trans., vol. 18, pp. 273-278, 1890.

17. The Laramie gioup. Its geologic relations, its economic

importance, and its fauna and flora. New York Acad. Sci., Trans., vol. 9, pp. 27-32, 1890. Abstract (by author) : Geol. Soc. Am., Bull., vol. 1, pp. 524-527, 1890, with discussion by J. B. Tyrrell, L. F. Ward, J. J. Stevenson, and E. D. Cope, pp. 527-532. Other abstracts: Am. Geol., vol. 5, p. 118, 1890; Am. Nat., vol. 24, pp. 856-857, 1890.

18. The later extinct floras of North America. A "posthumous

work, edited by Arthur Hollick. U. S. Oeol. Surv., Mon. 35, 295 pp., Illust., 1898.

230 Bibliography Of Colorado Geology

Newell, p. H.

1. Hydrography of the arid regions. U. S. Geol. Surv., 12th

Ann. Rept., pt. 2, pp. 213-361, Illust., maps, 1891. Includes measurements of the flow of several Colorado rivers and statistics of precipitation.

2. Results of stream measurements of the United States

Geological Survey. A. I. M. E., Trans., vol. 20, pp.

547-575, Illust, map, 1891.

Contains results of a number of Colorado streams, including the Cache la Poudre, Arkansas, and Rio Grande and gives curve showing daily discharge of the Rio Grande at Del Norte, in 1889, 1890, and 1891.

3. Water supply for irrigation. U. S. Geol. Surv., 13th Ann.

Rept., pt. 2, pp. 1-99, Illust, 1893.

Includes description of the Platte River basin, pp. 73-92.

4. Results of stream measurement. U. S. Geol. Surv., 14th

Ann. Rept., pt. 2, pp. 89-155, Illust, maps, 1894.

Includes measurements of Arkansas and Rio Grande rivers, pp. 106-115.

5. The public lands and their water supply. U. S. Geol.

Surv., 16th Ann. Rept, pt. 2, pp. 457-533, Illust., 1895. Describes the character of the public lands of the western states and their water supply.

6. Report of progress of the division of hydrography for the

calendar years 1893 and 1894. U. S. Geol. Surv., Bull.

131, 126 pp., 1895.

Stream measurements in Platte Basin on Cache la Poudre River, Arkansas Basin at four stations, Hayden, Canyon, La Junta and Holly; Rio Grande Basin, Del Norte, Alamosa; Colorado Basin, Grand Junction on Gunnison and Grand rivers; also well records in Colo- rado.

7. Report of progress of the division of hydrography for the

calendar year 1895. U. S. Geol. Surv., Bull. 140, 365

pp., 1896.

South Platte River: Denver station on South Platte River, Morrison station on Bear Creek, Marshall station of South Boulder Creek, Boulder station on Boulder Creek, Lyons station of St. Vrain, Arkins station of Big Thompson, Fort Collins station of Cache la Poudre, Green City and Orchard on South Platte. Arkansas River: Granite on Arkansas River, Salida, Canyon, Pueblo, La Junta, Holly, and Hutchinson. Rio Grande Basin: Del Norte station, Alamosa. Colorado River: Grand River at Grand Junction, Gunnison River at Fort Crawford on

Bibliography Of Colorado Geology 231

Newell, p. H.— Continued.

Uncompabgre, Whitewater, Dolores and San Miguel riv- ers at Dolores and Seymour on San Miguel. San Juan River, Arboles on San Juan River, Durango on Animas River.

8. Iiivestigation of water supply. A. I. M. E., Trans., vol.

27, pp. 465-477, 1897.

9. Observations at river stations, 1897. U. S. Geol. Surv.,

W. S. Taper, 15, pt. 1, 100 pp., 1898.

Stream measurements on South Platte, Bear Creek, South Boulder, St. Vrain, Big Thompson, Arkansas, Purgatory, Rio Grande, Grand, Uncompahgre, Gunnison, San Miguel, Dolores, San Juan, Piedra, and Animas.

10. Mesa Verde. Nat. Geog. Mag., vol. 9, pp. 431-434, 1898.

Describes physiographic features in southwestern Colorado.

11. Report of progress of stream nicasureinent for the cal-

endar year 1897. U. S. Geol. Surv., 19th Ann. Rept.,

pt. 4, pp. 1-632, Illust., 1899.

Stream measurements of South Boulder, Bear Creek, South Platte, Boulder, St. Vrain, Big Thompson, Arkan- sas, Rio Grande, Dolores, Grand, Uncompahgre, San Juan, Piedra, and Animas.

12. Report of progress of stream measurements for the cal-

endar year 1898. U. S. Geol. Surv., 20th Ann. Rept,

pt. 4, pp. 1-562, 1900.

Reservoir sites, stream measurements, and rainfall of Colorado.

13. Operations at river stations, 1898. U. S. Geol. Surv., W.

S. Paper 27, pts. 1 and 2, 200 pp., 1899.

Stream measurements on South Boulder, South Platte, Bear, Boulder, St Vrain, Big Thompson, Arkansas, Purgatory, Rio Grande, Grand, Gunnison, Mancos, San Miguel, Dolores, San Juan, Piedra, and Animas.

14. Report of progress of stream measurements for the cal-

endar year 1899. U. S. Geol. Surv., 2l8t Ann. Rept., pt. 4, pp. 9-48S, must., 1900.

15. Operations at river stations, 1899. U. S. Geol. Surv., W.

S. Papers 37 and 38, 1900.

Stream measurements of South Platte, Bear Creek, Clear Creek, South Boulder, Boulder, St. Vrain, Big Thompson, Cache la Poudre, Arkansas, Lake Creek, Purgatory, Rio Grande, Conejos, Grand, Uncompahgre, Gunnison, Dolores, San Miguel, San Juan. Los Plnos, Piedra, Animas, Florida and Mancos.

232 Bibliography Op Colorado Geology

Newell, P. H. — ( ontinued.

16. Report of progress of stream iiieasurenients for the cal-

endar year 1900. U. S. Geol. ., 22nd Ann. Rept, pt. 4, pp. 9-506, Illust., 1902.

17. Operations of river stations, 1901. U. S. Geol. Surv., W.

S. Paper 66, pt. 2, 188 pp., 1902.

Stream measurements on the South Platte, Bear Creek, Clear Creek, South Boulder, St. Vrain, Big Thompson, Cache la Poudre, Arkansas, Rio Grande, Yampar, White, Grand, Gunnison, Dolores, Los Pinos; Florida, and Mancos.

18. Report of progress of stream measurements for the cal-

endar year 1901. U. S. Geol. Surv., W. S. Paper 75, 233 pp., Illust., 1903.

Stream measurements of the South Platte, Bear Creek, South Boulder, Boulder, St. Vrain, Big Thompson, Cache la Poudre, Rio Grande, Grand, Gunnison and Florida.

19. Colorado reclamation. U. S. Reclamation Service, 1st

Ann. Rept, pp. 129-160, 1903.

Discussion of work done on Gunnison River, Grand River and at Sterling.

20. Reclamation in Colorado. U. S. Reclamation Service,

5th Ann. Rept, pp. 106-115, 1907.

Discussion of Uncompahgre, Grand Valley, Colorado River storage, and White River project for reclamation.

21. Colorado Grand Valley rodamation project. U. S. Re-

clamation service, 7th Ann. Rept., pp. 73-79, 1908; 8th Ann. Rept, pp. 63-75, 1909; Ann. Rept, pp. 90-104, 1910.

New Empire.

1. Coalmont fuel. The New Empire, p. 9, Jan., 1912.

Newland, D. H.

1. The mineral industry, its statistics, technology, trade in

the United States and other countries for the year

1903. Min. Ind., vol. 12, 1903.

Summary of production of coal, coke, copper. Iron, lead, manganese, petroleum, pyrite, zinc, dividends from mining companies and special articles on: "Cyanide process," C. H. Fulton: "Mining in Colorado," F. - ard; "Milling in Colorado," R. H. Richards.

Bibliography Of Colorado Geology 233

NewBom, J. F.

1. Clastic dikes. Geol. Soo. Am., Bull., vol. 14, pp. 227-268, must., 1903.

Describes the location, geologic relations, character and origin of clastic dikes, chiefly those of California, and gives references to literature in which clastic dikes are described.

Newtons.

1. Gunnison and Kagle River counties. Map, 32x23 inches. Denver, Chain and Hardy, 1880.

Nicholson, H. A.

1. Nature of a silicified forest in the Rocky Mountains with

an account of the supposed fossil chip. Brit. Assoc.

Adv. Sci., vol. 42, p. 194, 1872. Pikes Peak region.

Nicholson, H. A., and White, C. A.

1. Bibliography of North American invertebrate paleon-

tology.

2. Supplement to the bibliography of North American in-

vertebrate paleontology. See White, C. A., and Nich- olson, H. A.

Nicholson, H. H.

1. Low grade suljihides of Kagle County. Mg. Sci., vol. 64, pp. 127-128, must, 1911.

Nicholson, W. L.

1. Post route map of the state of Colorado. 1st edition re- issued in 1877. Drawn bv A. F. Dinsmore. 28x42 inches, fold., fol., Washington, U. S. Post oflfice de- partment. Top. office, 1881.

Nickles, John M.

1. Bibliography of North American geology for 1908 with

subject index. U. S. Geol. Surv., Bull. 409, 148 pp.,

2. Bibliography of North Auierican geology for 1909 with

subject index. U. S. Geol. Surv., Bull. 444, 174 pp.,

3. Bibliography of North American geology for 1910 with

subject index. U. S. Geol. Surv., Bull. 495, 179 pp.,

234 Bibliography Of Colorado Geology

Nickles, John M. — Continued.

4. Bibliography of North American geology for 1911 with

subject index. U. S. Geol. Surv., Bull. 524, 162 pp.,

5. Bibliography of North American geology for 1912 with

subject index. U. S. Geol. Surv., Bull. 545, 192 pp.,

Nickles, J. M., and Bassler, B. S.

1. A synopsis of American fossil Bryozoa, including bib- liography and synonymy. U. S. Geol. Surv., Bull. 173, 663 pp., 1900.

Classification, distribution, bibliography, and index of genera and species of American Paleozoic Bryozoa.

Nickles, J. M., and Lee, W. T.

1. Classified list of papers dealing with coal, coke, lignite, and peat, contained in publications of the United States Geological Survey. See Lee, W. T., and Nickles, J. M.

Nye, P., and Cliflford, P. H.

1. The Smuggler Union mine fire. Mines and Minerals, vol.

22, pp. 271-272, Illust., 1902.

The inspectors' account of the disaster and the cause which resulted in such large fatalities.

Of, Charles.

r. The mineral industry, its statistics, technology and trade

during 1911. Min. Ind., vol. 20, 997 pp., 1911.

Special articles on gold, silver, lead, zinc, copper and placer mining by Geo. E. Collins; vanadium by T. F. V. Curran; description of Moore-Clancy process, and general discussion of milling methods used at Victor, Cripple Creek and Telluride; and figures of production of fluor- spar, glass sand, graphite, radium, tungsten, uranium and vanadium.

Oflferhaus, C.

1. Ueber die Chloration und Cyanidpraxia : (Cblorination vs. Cyanidation of refractory gold ores at the Port- land Mill, Colorado Springs.) Metallurgie, p. 499, 1910; Oestr. Ingr. Ver. Zts., p. 103, Feb. 17, 1911.

Bibliography Of Colorado Geology 235

Ohly, J.

1. Rare metals and minerals. Ores and Metals, vol. 9, no.

10, pp. 8-10, 1900.

Uranium from Gilpin and Montrose counties, vanadium from Montrose, and tungsten production for 1899. De- scription of molybdenum deposits.

2. Some neglected minerals. Ores and Metals, vol. 9, no.

12, pp. 10-11, 1900.

Deposits and uses of cryolite, dolomite, magnesite, and witherite.

3. Selenium and tellurium. Mg. Kept., vol. 41, pp. 197-198,

cont., 1900.

Description and occurrence of minerals.

4. Mica and mica deposits. Mg. Rept., vol. 42, pp. 16-17,

Jefferson County mica deposits described.

5. Ozokerite. Mg. and Sci. Press, vol. 81, pp. 8-9, 1900.

Describes occurrence in Utah and Colorado.

6. Petroleum in the United States. Ores and Metals, vol.

10, no. 3, p. 8, 1901.

Description of Denver oil basin.

7. The occurrence of bauxite in Colorado and Wyoming, and

its utilization. Mg. Rept., vol. 44, pp. 190-191, cont.,

Occurrence at Buena Vista, with analysis of bauxite.

8. The analysis, detection and commercial value of the rare

metals. Mg. Rept., vol. 44, pp. 491-492, 1901.

Analysis of tungsten described, and an account of its occurrence in Boulder, Red Mountain, Ouray County and San Juan.

9. The Colorado oil industry. Mg. Rept., vol. 45, pp. 134-

137, 1902.

Analysis and description of Florence oil.

10. Tellurium. Mg. Rept., vol. 45, pp. 264-265, cont., 1902.

Analysis of sylvanite from Gold Hill.

11. The separation of vanadium, uranium and radium from

camotite. Mg. Rept., vol. 48, pp. 118-119, 1903.

12. The preparation of radium, vanadium and uranium com-

pounds from camotite and pitchblende. Mg. Rept., vol. 49, pp. 476-478, 1904.

13. The treatment of vanadiferous sandstone. Mg. Mag.,

vol. 13, pp. 148-149, 1906.

236 Bibliography Op Colorado Geology

Ohtegnot, R. S.

1. The rare minerals in Colorado, (pitchblende) Mg. and Ind. Kept, vol. 15, no. 5, p. 19, 1898.

Olcutt, E. E.

1. Battle Mountain mining district, Eagle County. E. and M. J., vol. 43, pp. 418, 419, 436-437, 1887.

Ores and Metals.

1. Colorado's sulphide belt. Ores and Metals, vol. 5, no.

5, pp. 9-10, map, 1897.

2. The smelting industry in Colorado. Ores and Metals,

vol. 5, no. 7, pp. 2-3, 1897.

History and description of smelters of the time.

3. Colorado production, 1900. Ores and Metals, vol. 10, no.

1, pp. 1-2, 1901.

Gold, silver, lead, copper, zinc, by counties. Tungsten, coke, iron, clay, cement, and rare minerals.

4. Colorado production, 1901. Ores and Metals, vol. 11, no.

1, pp. 1-2, 1902.

5. Progress of oil boom. Ores and Metals, vol. 11, pp. 12-13,

map, 1902.

Archuleta, Boulder, Rio Blanco, El Paso, Routt, and Arapahoe counties.

6. Colorado production, 1902. Ores and Metals, vol. 12, no.

1, pp. 22-23, 1903.

Production of gold, silver, lead, copper, and zinc by counties.

6a. Saofordite. Ores and Metals, vol. 12, April 1903.

7. Radium. Ores and Metals, vol. 13, no. 7, p. 17, 1904.

Uranium from Boulder and Gilpin counties.

8. Colorado mineral production for 1904. Ores and Metals,

vol. 15, no. 1, pp. 23-24, 1905.

Includes gold, silver, lead, copper, and zinc by counties.

9. Mineral production of Colorado, 1905. Ores and Metals,

vol. 15, no. 1, pp. 11-12, 1906.

Includes gold, silver, lead, copper, zinc, coal, oil, stone, tungsten, clay, cement, chemical products, and rare min- erals. Production of gold by counties.

Often, E.

1. Geological probabilities as to petroleum. Geol. Soc. Am.,

Bull., vol. 9, pp. 85-100, 1898.

Discusses the origin of petroleum and gas, the evidence of their ascending or descending in geologic formations, the dominant features in their accumulation, and the duration of their supply.

Bibliography Of Colorado Geology 237

OrtODi E. — Continued.

2. llie Mills moraine, with some general remarks on the glaciation of Longs Peak region of Colorado. Ab- stract: Rcienoe, new ser., vol. 29, pp. 751-752, 1909.

Osbom, H. F.

1. Wind River and Huerfano beds in the Huerfano Lake

Basin. Am. Nat., vol. 31, pp. 966-968, 1897.

Review of the work of R. C. Hills on these beds, and result of the author's observations.

2. The Huerfano Lake Basin, southern Colorado, and its

Wind River and Bridger fauna. Am. Mus. Nat. Hist.,

Bull., vol. 9, pp. 247-258, 1897.

Reviews the literature on this region, describes the character and distribution of the beds, and gives notes on the fauna.

2a. Additional characters of the great herbivorous dinosaur Camarasaurus. Am. Mus. Nat. Hist., Bull., vol. 10, pp. 219-233, Illust., 1898.

3. Western explorations for fossil vertebrates. Pop. Sci.

Monthly, vol. 67, pp. 561-568, Illust, 1905.

An account of the various exploring parties, with description of fossils found in Colorado and adjacent states.

4. Cenozoic mammal horizons of western North America.

With faunal lists of Tertiary mammalia of the west by W. D. Matthew. U. S. Geol. Surv., Bull. 361, 138 pp. Illust., 1909.

5. Correlation of the Cenozoic through its mammalian life.

Jour. Geol., vol. 18, pp. 201-215, 1910.

6. Correlation and paleogeography. Geol. Soc. Am., Bull.,

vol. 23, pp. 232, 256, Illust., 1912.

Osbom, H. F., Scott, W. B., and Speir, Francis, Jr.

1. Paleontological report of the Princeton scientific expe- dition of 1877. Princeton College, Contrib. Mus. Geol. and Arch., no. 1, pp. 1-107, Illust., 1878.

Osbom, H. F., and Wortman, J. L.

1. Fossil mammals of the lower Miocene White River beds;

collection of 1892. Am. Mus. Nat. Hist., Bull., vol.

6, pp. 199-288, Illust., 1894.

Description of fossils of the lower Miocene.

'4

238 Bibliography Of Colorado Geology

Osbom, H. p., and Wortman, J. L. — Continued.

2. Perissodactjls of the lower Miocene White River Beds.

(South Dakota.) Am. Mus. Nat. Hist, Bull., vol. 7, pp. 343-375, Illust., 1894.

3. Fossil mammals of the Wahsatch and Wind River beds.

Bull. Am. Mus. Nat. Hist., vol. 4, pp. 135-144, 1892.

Osgood, S. W.

1. San Juan country as a zinc producer. Mg. Mag., vol. 10, p. 423, 1904.

Packard, G. A.

1. The cyanide process in the United States. A. I. M. E., Trans., vol. 26, pp. 709-721, 1896.

Paddock, Carl H.

1. Tungsten milling in Boulder County. Mg. Sci., vol. 62, pp. 172-174, 1910.

Page, Nichols & Co.

1. Map of Leadville mining claims. 38 x 51 inches. Lead- ville, 1881.

Palache, Charles.

1. Notes on tellurides fi-om Colorado. Am. Jour. Sci., 4th

ser., vol. 10, pp. 419-427, Illust., 1900.

Describes the crystallographlc characters of the mate- rial and the crystallographlc identity of goldschmiditite with sylvanite. Includes a note by W. H. Hobbs on these results and also a description of hessite crystals.

Palmer, Charles S.

1. A preliminary paper on the eruptive rocks of Boulder County and adjoining counties. Colo. Sci. Soc, Proc., vol. 3, pp. 230-236, 1890.

Palmer, Charles S., and Fulton, Henry.

1. The quartz porphyry of Flagstaff Hill, Boulder. Colo. Sci. Soc, Proc, vol. 3, pp. 351-358, 1891.

Palmer, Charles S., and Stoddard, W. B.

1. The dike on the Columbia vein in Ward district, Boulder County. Colo. Sci. Soc, Proc, vol. 5, pp. 159-164, Illust., 1898.

Bibliography Of Colorado Geology 239

ParkeTi E. W.

1. The production of coal in 1894. U. S. Geoi. Surv., 16th

Ann. Rept., pt. 4, p. 75, 1895. (Abstract from Hills's report in Mineral Resources of 1892.)

2. The production of coal in Colorado, 1905. Mg. Rept., vol.

54, p. 66, 1906.

3. Coal, coke, gas, tar, and ammonia. U. S. Qeol. Surv.,

Min. Res. 1908, pt. 2, pp. 5-322, 1909.

4. Coal production of Colorado. Mg. World, vol. 28, p. 955,

5. Coal. U. S. Geol. Surv., Min. Res. 1909, pt. II, pp. 5-195,

6. Coal and coke. U. S. Geol. Surv., Min. Res. 1910, pt. II,

pp. 5-297, map, 1912; U. S. Geol. Surv., Min. Res., 1911, pt. II, pp. 5-267, 1912.

7. Mineral products of the United States. Review of condi-

tions and out put in 1910-1911. (Colorado.) U. S.

Geol. Surv., Min. Res., 1911, pt. I, pp. 22-23, 1912.

Gives figures of production for 1910-1911 of various metallic and non-metallic products.

Parker, E. W., Holmes, J. A., and Campbell, M. R.

1. Preliminary report on the operation of the coal-testing

plant of the United States Geological Survey at the

Louisiana Purchase Exposition at St. Louis, 1904. U.

S. Geol. Surv., Bull. 261, 172 pp., 1905.

One coal from Colorado analyzed, tested for boiler coal, gas producer, and briquetting.

2. Report of the operations of the coal-testing plant of the

United States Geological Survey at the Louisiana Pur- chase Exposition at St. Louis, Missouri, 1904. U. S.

Geol. Surv.., Prof. Paper 48, 1492 pp., Illust., 1906.

Ft. 1. Field work, classification of coals, chemical

work. Pt. 2. Boiler tests. Pt. 3. Producer gas, coking,

briquetting, and washing tests. Coal from Lafayette

tested.

Parker, H. W.

1. Footprints in the rocks of Colorado. Science, vol. 5, pp.

312-313, Illust., 1885.

Describes fossil footprints in the sandstone from St. Vrain.

Parkison, J. E.

1. Fuel economy in boiler furnaces at Cripple Greek. Mp. Rept, vol. 54, pp. 521-522, Illust, 1906.

240 Bibliography Of Colorado Gbology

Parmelee, H. C.

1. The progress of metallurgy in Colorado. Colo. Sch. of

Mines, Bull., vol. 3, pp. 229-246, 1907.

Discussion of mill buildings, power, concentration, cyanidation, chlorination, flotation, electricity and mag- netism, and smelting.

2. Zinc-ore dressing in Colorado. Met. and Chem. Eng.,

vol. 8, pp. 677-680, Illust, 1910; vol. 9, p. 91, 1911.

3. Modem ore dressing practice in Gilpin County, Prontenac

mill. Met. and Chem. Eng., vol. 9, pp. 241-244, 1911.

4. The problems of tungsten concentration. Met. and Chem.

Eng., vol. 9, pp. 341-342, 1911; Canadian Mg. Jour.,

vol. 32, p. 458, 1911.

Mills of Boulder County described.

5. Cyanidation by continuous decantation in Clear Creek

County. (Hudson mill, Idaho Springs.) Met. and Chem. Eng., vol. 10, p. 27, 1912.

6. Zinc ore dressing in Colorado. (Chiefly on magnetic

separation and roasting and drying.) (Wellington mills at Brecken ridge.) Met. and Chem. Eng., vol. 10, p. 527, 1912. Abstract : Mg. and Eng. World, vol. 37, p. 666, 1912.

Parsons, F. W.

1. Coal and coke. Miu. Ind., vol. 20, 1911, pp. 134-160, 1912.

Parsons, F. W., and Hanes, J. E.

1. Coal mining in Colorado. See Hanes J. E., and Parsons, F. W.

Parsons, H. F., and Liddell, Chas. A.

1. The coal and mineral resources of Boutt County. Colo.

Sch. of Mines, Bull., vol. 1, pp. 47-59, Illust., 1903.

Describes the geology, the location of the coal districts, the character and occurrence of the Cretaceous coals, and the occurrence of other mineral deposits, chiefly gold.

Pascoe, J. N.

1. Milling opportunities near Silverton. Mg. Sci., vol. 66, pp. 374-376, Illust., 1912.

Bibliography Of Colorado Geology 241

Patton, Horace B.

1. Concretions of chalcedony and opal in obsidian and /

rhyolite in Colorado. Colo. Sci. Soc, Proc, vol. 5,

pp. 165-170, must, 1898.

Describes the occurrence of the concretions and their megascopic and microscopic characters.

2. Peculiar geological formations at the headwaters of the

Rio Grande. Colo. Sci. Soc, Proc, vol. 5, pp. 171-172, Illnst, 1898. (Read before the Colorado Scientific Society Nov. 4, 1895.)

Describes erosion forms of volcanic conglomerates.

3. Tourmaline and tourmaline schists from Belcher Hill,

Jeflferson County. Geol. Soc Am., Bull., vol. 10, pp. 21-26, Illust., 1899. Abstracts : Science, new ser., vol. 8, pp. 464-465 ; Am. Geol., vol. 22, p. 251, 1898.

4. Thomsonite, mesolite, and chabazite from Golden. Geol.

Soc. Am., Bull., vol. 11, pp. 461-474, Illust., 1900.

Describes the occurrence and optical and chemical characters of the material.

5. Synopsis of paper on the development of pseudomorphs.

Colo. Sci. Soc, Proc, vol. 7, pp. 103-107, Illust., 1903.

Discussion of methods of alteration of minerals and description of dolomite and calcite crystals from Colo- rado.

6. Fault planes in the Dakota fire clay beds at Golden.

Colo. Sch. of Mines, Bull., vol. 3, pp. 26-32, Illust., 1905. Abstract: Geol. Soc. Am., Bull., vol. 15, p. 583,

7. The Montezuma mining district of Summit County. Colo.

Geol. Surv., 1st Kept, pp. 105-144, Illust., map. 1909.

8. Geology of the Grayback mining district, Costilla County.

Colo. Geol. Surv., Bull. 2, 111 pp., Illust, maps, 1910. Chapters on topographic mapping and sedimentary rocks, by Chas. E. Smith; ore deposits, by G. Mon- tague Butler; mines and mining processes, by Arthur J. Hoskin.

9. Rock streams of Veta Peak. Geol. Soc. Am., Bull., vol.

21, pp. 663-676, Illust., 1910. Discussion: pp. 764- 765. Abstract : Science, new ser., vol. 32, p. 91, 1910.

242 Bibliography Of Colorado Geology

Patten, Horace B. — Continued.

10. Geology and ore deposits of the Alma district, Park County. Colo. Geol. Supv., Bull. 3, 284 pp., Illust. maps, 1912. Chapters on history of mining and on prominent mines of the district, by Arthur J. Hoskin ; and ore deposits north of Alma by, G. Montague Butler.

Peale, A. C.

1. Report on Colorado and Utah. Hayden Surv., 6th Ann.

Kept., pp. 99-108, Illust., 1873.

Describes various localities on eastern slope, including Garden of the Gods and vicinity of Golden.

2. Catalogue of thermal springs. Hayden Surv., 6th Ann.

Kept., pp. 175-178, 1873.

Gives locality, character of rock, elevation, time of observation, gases evolved, principal constituents, and temperature.

3. Catalogue of minerals. Hayden Surv., 6th Ann. Kept., pp.

179-182, 1873.

A list of minerals collected in Colorado, Utah, Montana, Idaho, Wyoming, and Yellowstone National Park, with brief notes on the occurrence In some cases.

4. Catalogue of rocks. Hayden Surv., 6th Ann. Kept., pp.

183-187, 1873.

A list of rocks with locality from which each variety was collected. But few were collected in Colorado; by far the greater number came from Montana, Idaho, Utah and Wyoming, and Yellowstone National Park.

5. Report of South Park division. Hayden Surv., 7th Ann.

Kept., pp. 193-273, Illust., 1874.

Denver to Colorado Springs, Front Range, Bergen (Manitou) Park, Hayden Park; South Park, Park Range; Arkansas Valley, Eagle River, Sawatch Range; Gunnison River, Elk Mountains, Roaring Fork; catalogue of min- erals; catalogue of rocks. In large part a discussion of the character, structural features, and paleontology of the sedimentary formations, but contains notes on intru- sives, mineral springs, and economic products.

6. Mines noted by the South Park division of the United

States Geological Survey, 1873. Hayden Surv., 7th

Ann. Rept., pp. 301-305, map, 1874.

Tarryall Creek, Silver Heels Mountain, Fairplay, Oro City, Homestake lode, Arkansas Valley, Elk Mountain district.

Bibliography Of Colorado Geology 243

Peale, A. C. — Continued.

7. Report of geologist of Middle division. Hajden .,

8th Ann. Rept., pp. 73-180, Illust, maps, 1876.

Surface geology of valley of Eagle River, Grand River and its tributaries, Gunnison River and its tributaries. Archean areas of Eagle, Grand and Gunnison rivers. Stratigraphy: Paleozoic, Silurian, Primordial period, Potsdam group, Canadian period, Calciferous and Quebec groups, Devonian age, Carbouiferous age, Permian or PermchCarboniferous, Triassic, Jurassic, Cretaceous, Cen- ozoic formations. Tertiary, FOrt Union or Great Lignite, Bear River group. Bitter Creek series, Wasatch group, Green River group. Wind River group, Bridger group, White River group, Lignitic group. Tertiary between Grand and Gunnison rivers, Green River and Bridger groups, Post-Tertiary and Recent. Eruptive rocks: trachytes, trachorheites, basalt. Catalogue of minerals and rocks. Describes in detail the stratigraphy and structural features and gives considerable attention to correlation of formations and groups.

8. Report of geologist of the Grand River division. Hajden

Surv., 9th Ann. Rept., pp. 31-101, Illust., maps, 1877.

Abstract: Am. Jonr. Sei., 3rd ser., vol. 14, p. 420,

Surface geology, Los Pinos agency to Uncompahgre Valley, Gunnison River, and Uncompahgre Plateau; San Miguel and Dolores rivers, Unaweep Canyon, Sierra La Sal and Grand River. Archean rocks; Paleozoic rocks; Mesozoic rocks; eruptive rocks, trachorheites, breccia, porphyritic trachyte, basalt. 'Economic geology. Numer- ous sections illustrate structural and stratigraphic geol- ogy; Ch. V and VI include lists of fossils and notes on correlation; Ch. VII includes a catalogue of minerals collected and analysis of coal.

9. On a peculiar type of eruptive mountains in Colorado.

Hajden Surv., Bull., vol. 3, no. 3, pp. 551-564, 1877.

Abstracts : Am. Jour. Sci., 3rd ser., vol. 13, pp. 70-71,

1877; vol. 14, p. 155, 1877.

Spanish Peaks, Huerfano River, Middle Park, Mount Guyot, Elk Mountains, Sierra La Sal, Sierra Abajo, San Juan area.

10. Notes on the age of the Rocky Mountains in Colorado. (Review of J. J. Stevenson's report on structure and age of the Rocky Mountain system.) Am. Jour. Sci.,

244 Bibliography Of Colorado Obologt

Peale, A. C. — Continued.

3rd ser., vol. 13, pp. 172-181, 1877. Reviewed by J. J.

Stevenson, ibid., pp. 297-299, 1877.

Discusses formations and the crustal movements. See also pp. 297 and 388.

11. Note on the criticism of Professor Stevenson (on age of

the Rocky Mountains in Colorado). Am. Jour. Sci., 3rd ser., vol. 13, pp. 388-389, 1877.

12. Geological report on the Grand River district. Hayden

Surv., 10th Ann. Rept, pp. 161-185, Illust, maps,

1878. Abstract : Am. Nat., vol. 11,- pp. 76-79, 1877.

San Miguel and Dolores rivers, Saucer Valley, Gypsum Valley, Basin Plateau, Paradox Valley, San Miguel Pla- teau, Grand River Valley, Roan or Book Clifts, Little Book Cliffs. Geological formations of Grand River dis- trict. Upper Carboniferous, Jura-Trias, Cretaceous, post- Cretaceous, Tertiary. Discusses drainage, stratigraphy and paleontology.

13. The Laramie group of western Wyoming and adjacent

regions. Hayden Surv., Bull., vol. 5, no. 2, pp. 196-

200, 1880.

The author retains the name post-Cretaceous for the Laramie group. He notes conditions of Laramie sea, discusses fossils and crustal movements.

13a. The themml springs of Yellowstone National Park. Hay- den Surv., 12th Ann. Rept., pt. 2, pp. 324-325, 1883.

14. List and analyses of the mineral springs of the United

States. U. S. Geol. Surv., Bull. 32, 235 pp., 1886.

Includes list of analyses of mineral springs of Colo- rado, pp. 188-193.

15. Natural mineral waters of the United States. U. S. Geol.

Surv., 14th Ann. Kept, pt. 2, pp. 49-88, maps, 1894. History, definition, position, classification of the ther- mal springs, composition and analyses, geographic dis- tribution, utilization of the mineral waters. Includes a number of springs of Colorado.

16. Mineral waters. U. S. Geol. Surv., 16th Ann. Rept., pt.

4, pp. 707-721, 1895.

Description of springs at Canon City, Pueblo, Barr, and Manitou.

17. On the application of the term Laramie. Am. Jour. Sci.,

4th ser., vol. 28, pp. 45-58, 1909.

Bibliography Of Colorado Geology 245

Peale, A. C. — Continued.

18. On the stratigraphic position and age of the Judith

River formation. Jour. GeoL, vol. 20, pp. 530-549, 640-

652, 738-758, 1912.

Gives correlations with Colorado formations.

Peale, A. C, Endlich, F. M., White, C. A., and Marvine, A. R.

1. Map, northwestern Colorado. See Marvine, A. R., Peale, A. C, Endlich, F. M., and White, C. A.

Pearce, H. V.

1. Improved method of slag treatment, Argo smelter. A. I. M. E., Trans., vol. 36, pp. 89-100, Illust., 1906; Mg. Mag., vol. 12, pp. 56-58, Illust., 1906; Mg. Rept., vol. 51, p. 582, 1905.

Pearce, Richard.

1. Address of retiring president of the Colorado Scientific

Soceity. Colo. Sci. Soc, Proc, vol. 2, pp. 1-6, 1886. Discussion of minerals of Colorado.

2. Supposed mixture of bornite and stromeyerite. Colo. Sci.

Soc, Proc, vol. 2, p. 188, 1888.

Notes on the physical and chemical characters of material from Idaho Springs.

3. The genesis of ore deposits. Colo. Sci. Soc, Proc, vol.

3, pp. 71-72, 1888.

4. Progress of metallurgical science in the west. A. I. M. E.,

Trans., vol. 18, pp. 55-72, 1889.

History of smelting in Colorado.

5. The origin of the gold-bearing quartz of the Bendigo reefs,

Australia. A. I. M. E., Trans., vol. 22, pp. 738-774,

Mention of lava flow, Marshall Basin, near Telluride.

6. The occurrence of gold in ores of the Cripple Creek dis-

trict. Abstract : E. and M. J., vol. 57, p. 271, 1894.

7. Tellurium f r,om the Griffith lode. Abstract : E. and M. J.,

vol. 63, p. 139, 1897.

8. The mode of occurrence of gold in the ores of the Cripple

Creek district. Colo. Sci. Soc, Proc, vol. 5, pp. 5-10,

Illust, 1898. (Read before the Colorado Scientific

Society Jan. 8, 1894.)

Describes the characters of the ores and discusses briefly their origin.

9. Further notes on Cripple Creek ores. Colo. Sci. Soc,

Proc, vol. 5, pp. 11-16, 1898.

246 Bibliography Of Colorado Gbology

Pearce, Richard. — Continued.

10. Some notes on the occurrence of uraninite in Colorado.

Colo. Sci. Soc, Proc, vol. 5, pp. 156-158, 1898. Ab- stract : Mines and Minerals, vol. 19, p. 108, 1898.

11. Occurrence of tellurium in oxidized form associated with

gold. Colo. Sci. Soc, Proc, vol. 5, pp. 144-147, 1898.

Describes material from the Black Hills, South Dakota, and compares it with Cripple Creek ores.

12. Notes on the occurrence of a rich silver and gold mineral

containing tellurium, in the Griffith lode, near George- town, Clear Creek County. Colo. Sci. Soc, Proc, vol. 5, pp. 242-243, 1898.

Describes the characters of the mineral and gives its chemical composition.

13. Telluride ore from Sierra Blanca. Colo. Sci. Soc, Bull.,

no. 6, pp. 46, 1898.

Gives chemical analyses of the material and remarks on the indications of a new mineraL "New mineral later named vandiestite. Called Von Diestite, in a note by E. Cumenge (Bull. Soc. franc. Min., 1899, vol. 22, p. 25 bis). Diestit (Zeits. Kryst. Min., 1901, vol. 34. p. 720; Chem. Central-Blatt, 1901, Jahrg. 72, vol. II, p. 828). A massive telluride of silver, bismuth, gold, and lead, from Sierra Blanca, Colorado. Named after Mr. P. H. van Diest, of San Luis, Colorado, by whom the mineral was found." Note, Min. Mag., vol. 13, no. 62, p. 378.

14. Address of the retiring president of the Colorado Sci-

entific Society. Colo. Sci. Soc, Proc, vol. 6, pp. 237-

244, 1899.

Discusses the paragenesis of gold-bearing ores, and illustrates by numerous examples of associations In Colo- rado veins.

15. The association of gold with other metals in the west.

A. I. M. E., Trans., vol. 18, pp. 447-457, 1890.

Discusses the occurrence of gold in Gilpin, Lake, Sum- mit, Ouray, and Eagle counties.

16. A trachytic boulder from Colorado. Cornwall, Roy.

Geol. Soc, Trans., vol. 12, pt. 9, p. 760, 1904.

Pearce, Stanley H., and Penfleld, S. L.

1. On polybasite and tennantite from the Mollie Gibson mine, in Aspen. See Penfleld, S. L., and Pearce, S. H.

Bibliography Of Colorado Qeolooy 247

Penfleld, S. L.

1. Phenacite from Colorado. Am. Jour. Sci., 3rd ser., vol.

33, pp. 130-134, Illust, 1887. Abstract : Nature, vol.

35, p. 451, 1887.

A description of crystals from the Pikes Peak region and others from Mount Antero, Chaffee County.

2. Bertrandite from Mount Antero. Am. Jour. Sci., 3rd

ser., vol. 36, pp. 52-55, 290-91, 1888.

Detailed description, including crystallography and analysis.

3. Crystallized bertrandite from Stoneham, Maine, and

Mount Antero, Colorado. Am. Jour. Sci., 3rd ser., vol. 37, pp. 213-216, Illust., 1889.

4. Some observations on the beillium minerals from Mount

Antero. Am. Jour. Sci., 3rd ser., vol. 40, pp. 488-490,

Illust, 1890.

Describes crystals of beryl and phenacite.

5. Crystallograpbic notes. Am. Jour. Sci., 3rd ser., vol. 43,

pp. 184-189, Illust., 1892. Am. Jour. Sci., 3rd ser., vol. 44, pp. 15-18, 381-389, Illust., 1892. See Genth, F. A.

6. Mineralogical notes. Am. Jour. Sci., 3rd ser., vol. 45,

pp. 396-399, 1893.

Describes the mineralogic characters and chemical composition of zunyite and the mineralogic character of xenotime, from Colorado.

7. Partial report on calaverite crystals from Cripple Creek.

U. S. Geol. Surv., 16th Ann. Rept, pt. 2, pp. 135-136,

Describes the crystallographic characters of the mate- rial.

8. On pearceite, a sulpharsenite of silver, and on the crystal

lization of polybasite. Am. Jour. Sci., 4th ser., vol.

2, pp. 17-29, 1896; Colo. Sci. Soc, Proc, vol. 5, pp.

210-224, Illust, 1898.

Discusses the relations of the sulphantimonites and sulpharsenites of silver. Describes the chemical compo- sition of pearceite from Aspen and crystallographic char- acters of pearceite from Montana and polybasite from Ouray.

9. On pearceite,- a sulpharsenite of silver. Yale Bicentennial

Pub., Contr. to Min. and Petrog., pp. 252-260, Illust., 1901; Am. Jour. Sci., 4th ser., vol. 2, pp. 17-20, 1896.

248 Bibliography Of Colorado Gbology

Penfleld, S. L., and Ford, W. B.

1. On calaverite. Am. Jour. Sci., 4th ser., vol. 12, pp. 225-

245, Illust., 1901.

Description and analyses of calaverite from Cripple Creek and discussion of chemical relations of sylvanite and calaverite.

Penfleld, S. L., and Minor, J. C, Jr.

1. On the chemical composition and related physical prop- erties of topaz. Am. Jour. Sci., 3rd ser., vol. 47, pp. 387-39G, 1894. Abstract : Am. Geol., vol. 13, p. 427,

Contains analysis of topaz from Nathrop.

Penfleld, S. L., and Pearce, S. H.

1. On polybasite and tennantite from the Molly Gibson mine in Aspen. Am. Jour. Sci., 3rd ser., vol. 44, i)p. 15-18, 1892. Abstracts: Am. Nat., vol. 27, p. 43, 1893; Nature, vol. 4G, pp. 310-311, 1892.

Penfleld, S. L., and Sperry, E. S.

1. Mineralogical notes. Am. Jour. Sci., 3rd ser., vol. 30,

pp. 317-331, Illust, 1888.

Contains description and analyses of phenacite from Colorado.

Penfleld, S. L., and Sperry, F. L.

1. On pseudomorphs of garnet from Lake Superior and

Salida, Colorado. Am. Jour. Sci., 3rd ser., vol. 32,

pp. 307-311, 1886.

Contains descriptions and analyses of Colorado garnet and decomposition product.

Penrose, R. A. F., Jr.

1. Manganese, its uses, ores and deposits. Geol. Surv.

Arkansas, 1890, vol. 1, 642 pp., Illust., maps, 1891.

Abstract: Am. Geol., vol. 8, pp. 261-263, 1891.

Discussion of manganese deposits of Gunnison County, and Leadville.

2. The ore deposits of Cripple Creek. Colo. Sci. Soc, Proc,

vol. 5, pp. 50-53, 1898.

Describes the occurrence and character of the gold ores.

3. The superficial alternation of ore deposits. Jour. Geol.,

vol. 2, pp. 288-317, 1894.

Brief reference to Rocky Mountain region.

Bibliography Of Colorado Geology 249

Penrose, B. A. P., Jr., and Cross, C. W.

1. Geology and mining industries of the Cripple Creek dis-

trict. See Cross, Whitman, and Penrose, R. A. F., Jr.

2. Pikes Peak folio. U. S. Geol. Surv., Geol. Atlas of U. S.,

folio 7, 1894. See Cross, Whitman, 24.

Peters, E. D., Jr.

1. The Mount Lincoln smelting works, at Dudley. A. I. M. E., Trans., vol. 2, pp. 310-314, 1874.

Petare, R. W.

1. Mines of La Plata Mountains. E. and M. J., vol, 66, pp.

667-668, Illust., 1898.

Describes the general geology of the region and the occurrence of the precious minerals.

Phalen, W. C. ,

1. Abrasive materials. U. S. Geol. Surv., Min. Res. 1908, pt.

2, pp. 581-598, 1909.

Reference to pumice deposits.

2. Abrasive materials. U. S. Geol. Surv., Min. Res. 1910.

pt. 2, pp. 683-697, 1912.

j3. Sulphur, pyrite and sulphuric acid. U. S. Geol. Surv.,

Min. Res. 1911, pt. 2, pp. 937-964, 1912.

Reference to deposits on Trout Creek and Middle Fork in Mineral County.

Phillips, Alexander H.

1. Radium in an American ore. Am. Phil. Soc., Proc, vol.

43, pp. 157-160, 1904.

Describes the occurrence and composition of carnotite from Utah and Colorado and the extraction of radium therefrom.

Pierce, B.

1. The lignite fields of Colorado. Coal Age, p. 534, Feb. 3,

Pirsson, Louis V.

1. On the crystallization of enargite. Am. Jour. Sci., 3rd

ser., vol. 47, pp. 212-215, 1894. Abstracts: Am. Geol.,

vol. 13, p. 359, 1894; Am. Nat., vol. 28, p. 870, 1894. Describes the crystallographic characters of enargite from the Ida and National Belle mines of Colorado.

250 Bibliography Of Colorado Geology

Pirsson, Louis V. — Continued.

2. The laccolitic mountain groups of Colorado, Utah and Arizona: by Whitman Cross. A review of Dr. Cross's report published in the 14th Ann. Rept., U. S. Geol. Surv., pp. 157-241. Am. Jour. Sci., 3rd ser., vol. 50, p. 74, 1895.

Platen, Paul.

1. Untersuchungen fossiler Holder aus dem Westen der

Vereinigten Staaten von Nordamerika. Naturf . Gesell-

sch. Leipzig, Sitzungsb., Jg. 34, pp. 1-164, Illust.,

Describes investigations upon fossil woods from west- ern states.

Plumb, Carlton H.

1. The Tercio coal mining district. Drury Coll., Bradley

Geol. Field Station, Bull., vol. 1, pp. 94-100, 1905.

Contains notes on the occurrence and character of the coal seams.

Pope, George S.

1. Government coal purchases under specifications, with

analyses for the fiscal year 1909-1910. U. S. Bureau

of Mines, Bull. 41, 97 pp., 1912.

Analyses and fuel value of four Colorado coals.

Porter, J. A.

1. The Smuggler-Union mines, Telluride. A. I. M. E., Trans.,

vol. 26, pp. 449-459, Illust., 1896. Abstracts : Mg. and

Sci. Press, vol. 73, p. 461, 1896; Mg. Ind. and Rev.,

vol. 18, p. 256, 1896.

Describes the occurrence and character of the gold and silver ores In these mines.

Portland Metallurgical Society.

1. Researches upon the telluride gold ores of Cripple Creek. So. Africa, Chem. Met. and Min. Soc, Jour., May, 1909. Abstract: W. Chem. and Mot., vol. 5, p. 350,

Posepny, F.

1. The genesis of ore deposits. A. I. M. E., Trans., vol 23,

pp. 197-369, Illust., 1893; vol. 24. pp. 943-1006, 1894. Ores from Leadvllle and Red Mountain, Ouray County, discussed.

Bibliography Op Colorado Geology 251

Potter, B. C.

1. Review of American blast furnace practice. A. I. M. E., Trans., vol. 23, pp. 577-585, 1893.

Potter, W. B.

1. The character and composition of the lignite coals of Colorado. A. I. M. E., Trans., vol. 5, pp. 365-375,

Powell, John W.

1. Exploration of the Colorado River of the west and its

tributaries, explored in 1869, 1870, 1871 and 1872, under the direction of the Secretary of the Interior. XI; 291 pp., Illust, Washington Govt. Printing Office, 1875. Includes report by A. H. Thompson, pp. 133-145; Zoology by Elliott Coues, pp. 215-279; Ap- pendix by G. B. Goode, pp. 281-285.

Short excursions were made into Colorado and the region so explored is briefly described. Among the places mentioned are Lodore Canyon, Browns Park, Yampa River, Escalante Hills, Grand River and sources.

2. Physical features of the Colorado Valley. I. Mountains

and valleys. (From report of the United States Geological and Geographical Survey of the Terri- tories.) Pop. Sci. Monthly, vol. 7, pp. 385-399, Illust ,

Includes description of the physical features of north- western Colorado.

3. Report of the- geology of the eastern portion of the Uinta

Mountains and a region of country adjacent thereto.

Powell Surv., Final Kept. VII, 218 pp. Illust, Atlas

of 8 sheets, folio, 1876.

Three geological provinces. Sedimentary groups of the plateau province. Invertebrate paleontology of the pla- teau province by C. A. White. Geographical distribution of the geologic formations in the Uinta mountains. Structural geology. Includes notes on northwestern Colorado, South, Middle and North Parks.

4. Types of orographic structure. Am. Jour. Sci., 3rd ser.,

vol. 12, pp. 414-428, 1876.

Extract from "Geology of the Uinta Mountains." Dis- cusses the structure of northwestern Colorado.

252 Bibliography Of Colorado Gbology

m

Powell, John W. — Continued.

5. Geographical and geological Survey of the Rocky Moun-

tain region in 1877. Smith. Inst., Ann. Kept. 1877,

pp. 67-87, 1878.

Discusses work of the Survey, instruments used, and includes brief notes on Colorado geology.

6. The Colorado Plateaus: prefatory note in C. E. Button's

report on the geology of the high plateaus of Utah.

Powell Suit., Final Kept. pp. VII-XIII, 1880.

The author discusses the extent, topography, and structure of the Colorado plateaus.

7. The arid lands. U. S. Geol. Surv., 11th Ann. Rept., pt.

2, pp. 201-289, maps, 1891.

Statement before the committee on irrigation of the House of Representatives. Includes notes on the topog- raphy of the water supply and lumber and coal supply.

Pratt, J. H.

1. Corundum and its occurrence and distribution in the

United States. U. S. Geol. Surv., Bull. 269, 175 pp.,

must., 1905.

A revised and enlarged edition of Bull. 180. Colorado areas mentioned are Canyon, Chaffee County, and Saxon Mountain.

2. Coal-testing plant, St Louis, Mo., 1904. Briquetting

tests. U. S. Geol. Surv., Prof. Paper 48, pp. 1389- 1459, 1906.

Preston, H. L.

1. The Franceville (El Paso County) meteorite. Jour. Geol..

vol. 10, pp. 852-857, Illust., 1902.

Describes the dimensions and physical characters of the meteorite.

2. Franceville meteorite. Rochester Acad. Sci., Proc, vol.

4, pp. 75-78, Illust., 1902.

Describes the characters and occurrence of this meteor- ite found in El Paso county and notes other falls in the state.

Prosser, Warren C.

1. Tungsten in San Juan county. E. and M. J., vol. 90,

p. 320, Illust, 1910.

2. Gold deposits of the San Juan. Mines and Minerals, vol.

31, pp. 335-337, 1911.

Bibliography Of Colorado Geology 253

Prosser, Warren C. — Continued.

3. An historical note on ore treatment in San Juan County.

Met. and Chem. Eng., vol. 9, pp. 593-594, 1911.

4. Prospecting in Colorado. Mining in San Juan County.

E. and M. J., vol. 92, pp. 99, 435, 1911.

5. Electrostatic zinc plant, Sunnyside mill. (Huff process

at Eureka.) E. and M. J., vol. 94, p. 105, 1912.

Prout, Henry G.

1. General description of country. Report of a reconnais- sance in the Ute country, made in 1873 by- Ruffner, pp. 6-51, 42nd Cong. 1st sess. House Ex. Doc. No. 193, Washington, 1874.

Puckett, W. J. ,

1. Colorado: Production of gold and silver, 1904. Rept. Director of Mint, U. S., 1904, pp. 69-74.

Pnmpelly, R.

1. The relation of secular rock disintegration to certain transitional crystalline schists. Geol. Soc. Am., Bull., vol. 2, pp. 209-224, 1891. Discussion by G. H. Wil- liams, B. K. Emerson, and G. K. Gilbert, pp. 223-224. Abstracts: Am. Geol., vol. 7, p. 259; Am. Jour. Sci., 3rd ser., vol. 42, pp. 364-367; Am. Nat., vol. 25, pp. 363, 826-827, 1891 .

Purington, Chester Wells.

1. Telluride mining district. Abstract: Science, new ser.,

vol. 5, p. 890, 1897.

Gives brief notes on the geology of the region and the occurrence of the ores.

2. Preliminary report on the mining industries of the Tellu-

ride quadrangle. U. S. Geol. Surv., 18th Ann. Rept.,

pt. 3, pp. 751-848, Illust, 1898.

Gives general description of the sedimentary and igneous rocks, the fissures and vein systems, and the occurrence of the ore. Discusses the origin and age of the ore deposits.

3. The Camp Bird mine, Ouray, and the mining and milling

of the ore. A. I. M. E., Ti-ans., vol. 33, pp. 499-528,

Illust., 1903.

Describes the general geology of the region, the system 6f veins and fissures, the occurrence of the ores, prin- cipally galena, and discusses the origin of the ore deposits.

254 Bibliography Oit Colorado Gbolooy

f

Purington, Chester Wells. — Continued.

4. The geological structure of the Camp Bird vein. E. and

M. J., vol. 75, pp. 820-822, Illust., 1903.

Describes the veins and fissures and their rock con- tents, and the character and occurrence of the gold and silver ores.

5. Geology of the Virginius mine. E. and M. J., vol. 76, p.

458, 1903.

Discusses the occurrence and origin of the gold ores.

6. The Camp Bird and Smuggler-Union fissures. E. and M.

J., vol. 79, pp. 1243-1244, 1905.

Discusses Assuring in the San Juan Mountains region and its explanation.

7. Ore horizons in the veins of the San Juan Mountains.

Ec. GeoL, vol. 1, pp. 129-133, 1905.

Discusses the character, occurrence, and relations of metalliferous veins in this region.

8. Treasure Mountain. Mg. and Sci. Press, vol. 97, pp. 23-25,

Illust., 1908.

Describes the local geology and the character and relations of the veins.

Purington, Chester Wells, Cross, Whitman, and Spencer, Arthur Coe.

1. Ia Plata quadrangle. See Cross, Whitman, Spencer, Arthur Coe, and Purington, Chester Wells, 1.

Purington, C. W., and Cross, Whitman.

1. Telluride quadrangle. See Cross, Whitman, and Pur- ington, C. W.

Putnam, Bayard T.

1. Notes on the samples of iron ore collected west of the

one hundreth meridian. 10th Census of the U. S.,

vol. 15, Mining Industries, pp. 469-505, maps, 1886. Contains a report on iron ores of Colorado with maps and analyses, pp. 472-485.

Quinton, J. H.

1. Operations in Colorado. (Reclamation.) U. S. Reclama- tion Service, 4th Rept. 1905, pp. 110-126, 1906.

Report of work done in the Uncompahgre Valley, and a preliminary report of the conditions near Krenmiling. and on the Upper Grand River, near Grand Lake.

Bibliography Of Colorado Geology 255

Balaton, Oliver C.

1. Leadville fissure veins. Mines and Minerals, vol. 32, p.

549, 1912.

2. Cost of milling in lieadville. Mines and Minerals, vol.

32, p. 619, 1912.

Randall, D. T.

1. The burning of coal without smoke in boiler plants. U.

S. Geol. Surv., Bull. 334, 26 pp. 1908.

Contains bibliography of United States Geological Sur- vey publications on coal, combustion, and smoke preven- tion.

2. The purchase of coal under Government and commercial

specifications on the basis of its heating value with analyses of the coal delivered under Government con- tracts. U. S. Geol. Surv., Bull. 339, 27 pp. 1908.

Bibliography of United States Geological Survey pub- lications on coal.

Randall, J. S.

1. Colorado Minerals, published by the author, Georgetown,

Colo.

Gives list of minerals found in the state, and brief notes regarding localities.

Band, McNally and Company.

1. New sectional map of Colorado. 24 x 33 inches, colored :

Chicago, Rand, McNally and Company, 1879.

2. Township, county and railroad map of Colorado. 124

X 19 inches. Chicago, Rand, McNally and Company,

3. Map of the Ute Indian war in Colorado, and of mining

localities. 16x211/ inches. Chicago, Rand, Mc- Nally and Company, 1880.

4. New geological map of Colorado. 24 x 19 inches, colored.

Chicago, Rand, McNally and Company, 1880.

5. Indexed county and township map of Colorado. 19 pp.,

1 map, 14 X 19 inches, fold., 18 : Chicago, Rand, Mc- Nally and Company, 1881.

6. New sectional map of Colorado. 24x23 inches, 18,

colored. Chicago, Rand, McNally and Company,

7. Indexed county and township pocket map and shippers

guide to Colorado. 36 pp., 1 fold. map. Chicago and New York Rand, McNally and Company, 1892, 1893.

256 Bibliography Op Colorado Geology

Band, McNally and Company — Continued.

8. Topographical, railroad and county map. 44 x 32 inches,

scale 10 miles to one inch. Chicago and New York,

Rand, McNally and Company, 1910.

Shows county lines, railroads, wagon roads, timber reserves, irrigation canals, altitudes, etc.

Bansome, F. Leslie.

1. The fissure system of tlie Silverton quadrangle. Abstract :

Science, new ser., vol. 12, p. 92G, 1900. (Bead before the Geological Society of Washington.)

2. The oi"e deposits of the Rico Mountains. U. S. Geol. Surv.,

22nd Ann. Rept., pt. 2, pp. 229-398, Illust., 1901.

Describes the general geologic structure and relations of the region, the character and occurrence of the ore- bearing veins and fissures, character, occurrence and origin of the ore bodies and associated minerals, and the mining operations.

3. A report on the economic geology of the Silverton quad-

rangle. U. S. Geol. Surv., Bull. 182, pp. 1-265, Illust, 1901. Reviews : E. and M. J., vol. 74, p. 586, and 613, 1902; Am. Jour. Sci., 4th ser., vol. 14, p. 392,

Describes the lode fissures, the character of the ores and of the stocks and masses, and the origin of the ore deposits. Includes detailed description of special areas.

4. A peculiar clastic dike near Ouray, and its associated

deposit of silver ore. A. I. M. E., Trans., vol. 30, pp.

227-236, Illust., 1901. Abstract: Science, new ser.,

vol. 11, p. 349, 1900.

Describes the occurrence, character, and origin of the dike and of the associated ore body.

5. (-leology and ore deposits of the Breckenridge district.

U. S. Geol. Surv., Prof. Paper 75, 187 pp., Illust.,

maps, 1911.

Description of the general geologic structure and rela- tions of the region, character and occurrence of the ore bodies, discussion of lode and placer mining.

Bansome, F. Leslie, and Cross, Whitman.

1. Bico quadrangle. See Cross, Whitman, and Bansome, F. Leslie.

Bansome, F. Leslie, Cross, Whitman, and Howe, Ernest.

1. Silverton quadrangle. See Cross, Whitman, Howe, Ernest, and Bansome, F. Tjeslie, 1.

Bibliography Of Colorado Geology 257

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1. Report of progress in the geological resurvey of the

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Rath, C. M., BaUey, E. W., and Girder, R. L.

1. The garnetiferous beds of Golden Gate Canyon, Jefferson County. See Bailey, E. W., Girder, R. L., and Rath,

Bath O. von.

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niederrheinischen Gesellschaft fiir Natur- und Heil- kunde zu Bonn, Jan. 7, 1884.

Bay, W. T., and Kreisinger, H.

1. The significance of drafts in steam-boiler practice. U. S.

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Baymond, R. W.

1. Conditions of mining industry in Colorado. Mines and

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3. On the relations between the speed and effectiveness of

stamps. A. I. M. E., Trans., vol. 1, pp. 40-54, 1871. Reference to Gilpin County mill practice.

4. Conditions of mining industry in Colorado. Mines and

mining in states and territories west of the Rocky

Mountains, 3rd Ann., Rept., pp. 287-332, 1871.

Description of mines, mills and furnaces of the Pacific states and territories, and an account of conditions and methods of mining and metallurgical industry of these regions, chiefly relating to the precious metals.

258 Bibliography Of Colorado Geology

Raymond, R. AV. — Continued.

5. Mining in Colorado. Mines and niiuiug in states and toiTitories west of the Rocky Mountains, 4th Ann. Rept., pp. 340-300, 1872.

(). The calorific value of western lignites. A. I. M. E., Trans., vol. 2, pp. 61-05, 1873.

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465, 1879.

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Bead, Thomas Thornton.

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632-635, 668-672, Illust., 1908.

Eeed, 11. S., and Meeker, R. J.

. Surface water supi)ly of Colorado drainage above Yuma, 1906. See Meeker, R. J., and Reed, H. S.

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Bhoda, Franklin.

1. Report on the topography of the San Juan country. Hay-

den Surv., Bull., vol. 1, no. 3, 2nd ser., pp. 165-209,

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Ascent of Mount Sneffels. Methods used in determin- ing the elevations of points in the district. Notes useful for the location of miners monuments in Bakers Park.

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E3ssentially the same as the report published in Bull., vol. 1, no. 3, Hayden Survey (1).

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den Surv., 9th Ann. Rept., i)p. 302-333, Illust., 1877. Describes the topography, scenery, weather, inhabit- ants, and in detail the work of the topographic party.

Richards, R. H.

1. American mining schools. A. I. M. E., Trans., vol. 15, pp.

309-340, 1886.

Colorado School of Mines described.

2. Progress in ore dressing in 1894. Min. Ind., vol. 3, pp.

683-696, 1895.

Description of Newton mortar, Idaho Springs.

3. Sorting before sizing. A. T. M. E., Trans., vol. 27, pp. 76-

106, 1897.

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pp. 690-718, 1898.

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Ind., vol. 13, 1904. Colorado reference, p. 466, 1905.

Coal washing of Colorado Fuel and Iron Company at Segundo.

260 BIbLIOORAPHY OF COLORADO GBOLOGY

Richards, R. H. — Continued.

8. Progress in gold milling in 1904. Min. Ind., vol. 13, pp.

199-213, 1905.

Placer mining In Colorado discussed.

9. Progress in gold milling, 1905. Min. Ind., vol. 14, pp.

289-308, 1906.

Discussion of conditions at Camp Bird, Ouray, OUpin County, Cripple Creek, and placer mining on Banner placer.

Richards, B. H., and Locke, C. E.

1. Progress in ore dressing and coal washing in 1906. Min.

Ind., vol. 15, pp. 810-865, 1907.

2. Progress in ore dressing and coal washing during 1907.

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Richardson, George B.

1. The Book Cliffs coal field, between Grand River, Colorado,

and Sunnyside, Utah. U. S. Geol. Surv., Bull. 316, pp. 302-320, must, 1907; U. S.<3eol. Surv., Bull. 371, 54 pp. Illust., 1909.

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379-446, Illust., map, 1910.

Discusses geology of the section, mines of the district with sections and analyses of coal and coke.

3. Clay near Calhan, El Paso County. U. S. Geol. Surv.,

Bull. 470, pp. 293-296, 1912.

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23, pp. 267-276, 1912.

Rickard, Forbes.

1. Notes on the vein formation and mining of Gilpin County.

A. I. M. E., Trans., vol. 28, pp. 108-126, Illust., 1899.

2. Mining in Colorado. Min. Ind., vol. 12, pp. 437441, 1904.

3. Colorado in 1903. E. and M. J., vol. 77, pp. 3840, Illust.,

Discussion of progress In Cripple Creek, Leadville, Aspen, Creede, Silverton, Tellurlde, Ouray, Clear Creek, Gilpin.

4. Gold ore near Newcastle. Mg. and Sci. Press, vol. 99, p.

503, Illust., 1909.

5. Malm process in Colorado. Mg. and Sci. Press, vol. 99,

pp. 662-663, 1909.

6. Pitchblende from Quartz Hill. Mg. Sci. Press, vol. 106,

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Kickard, T. A.

1. The limitations of the gold stamp mill. A. I. M. E.,

Trans., vol. 23, pp. 137-147, 1893. Discussion : vol. 23, pp. 545-577 ; vol. 24, pp. 806-809.

2. The increasing difficulty of getting gold. Eng. Mag., vol.

6, pp. 313-321, 1893.

3. The genesis of ore deposits. A. I. M. E., Trans., vol. 23,

pp. 589-591, 1894 ; vol. 24, pp. 942-956, 1895.

In discussion of paper by F. Posepny on the same subject; presents the author's classification of ore bodies; and discusses phenomena observed in mines in Colorado and Arizona.

4. A glimpse of "The Silvei-y San Juan." Eng. Mag., vol.

9, pp. 689-704, must., 1895.

Includes a history of the Rico and Ouray districts, with special mention of the Enterprise mine.

5. Mining in Colorado. Min. Ind., vol. 3, pp. 644-649, 1895.

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M. E., Trans., vol. 2<), pp. 834-848, map, 1897.

A history of discoveries and statement of the output of several districts.

7. Enterprise mine, Rico. A. I. M. E., Trans., vol. 26, pp.

906-980, must., 1897.

Describes the geology of the vicinity and the occur- rence, character, and structure of the ore bodies. Dis- cusses their origin.

8. Cripple Creek gold mines and the stock boom. Eng. Mag.,

vol. 10, pp. 605-612, 1896.

History of Colorado mining, ore deposits of Cripple Creek anfl correlation of Cripple Creek ores with New 2#ealand, and Boulder ores with Transylvania.

9. Mining in Colorado, 1895. Min. Ind., vol. 4, pp. 315-318,

Description of gold deposits of Cripple Creek, Park County, La Plata, Routt County placers, and the gold camps of southern Colorado, of Leadville and San Juan.

10. Stamp milling of gold ores. Min. Ind., vol. 4, pp. 319-

328, 1896.

Account of cost of milling in various places.

11. The Cripple Creek gold field. Mg. and Sci. Press, vol.

72, pp. 284285, 1896.

Describes the general geologic features of the region and the occurrence of the gold ores.

12. Vein structure in the Enterprise mine. Colo. Sci. Soc,

Proc, vol. 5, pp. 123-130, Illust., 1898.

262 Bibliography Op Colorado Geology

Biqkard, T. A. — Continued.

13. The minerals which accompany gold and their bearing

ni)on the richness of ore deposits. Mg. and Sci. Press,

vol. 77, PI). 81-82, 105-106, 1898; Mg. Ind. and Rev.,

vol. 20, pp. 541-540, cont., 1898; Mg. Rpt, vol. 39, pp.

18-10, 1899. (Paper i*ead before the Institute of

Mining and Metallurgy, London, Mch. 23, 1898.) Gives an account of telluride mining, and minerals ac- companying gold deposits in Cripple Creek, Boulder, Park, and Rico counties.

14. The Cripple Creek gold field. Mg. and Sci. Press, vol. 79,

pp. G88-C89, 716-717, 744, Illust., 1899; Inst. Mg. and Met. Trans., vol. 8, p. 49, Illust., 1899-1900.

15. The Cripple Creek volcano. A. I. M. E., Trans., vol. 30,

pp. 367-403, Illust., 1901.

Gives an account of the various stages of eruption in this volcano and compares it with volcanoes in other regions.

16. The telluride ores of Cripple Creek and Kalgoorlie,

(Australia). A. I. M. E., Trans., vol. 30, pp. 708-718,

1901. Abstract: E. and M. J., vol. 70, pp. 611-612,

Describes tlie characteristics of the ores of these regions.

17. The formation of bonanzas in the upper portions of gold

veins. A. I. M. E., Trans., vol. 31, pp. 198-220, 1902. Discusses enrichment by concentration through the action of underground water by solution and precipita- tion, and the distribution of ore-bonanzas in Australia, Colorado, California, and New Zealand.

18. Milling at high altitudes, beyond timber line in Colorado.

Cassier's Mag., vol. 21, p. 688, Illust, 1902.

Description of the Tomboy, Silverlake, San Juan Chief, and Camp Bird mines.

19. An example of the localization of rich ore. E. and M. J.,

vol. 74, pp. 847-850, Illust., 1902.

Description of Independence mine, Cripple Creek.

20. Ore deposits in all formations. Am. Geol., vol. 31, p. 326,

21. The veins of Boulder and Kalgoorlie. A. I. M. E., Trans.,

vol. 83, pp. 567-577, Illust., 1903.

Describes the occurrence, character and structure of gold-bearing veins of Boulder County, Colorado, and Kal- goorlie, West Australia.

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Bickardy T. A. — Continued.

22. The lodes of Cripple Creek. A. 1. M. E., Trans., vol. 33,

pp. 578-618, Illust., 1903; K. and M. J., vol. 75, pp.

179-181, Illust., 1903.

Describes the general geology of the region, the occur- rence and charactefr of the lodes and veins, and the position of the ore bodies.

23. Across the San Juan Mountains. 115 pp., Illust., New

York, E. and M. J., 1903. Appeared serially in E. and

M. J., vol. 76, pp. 7-10, 45-46, cont., Illust., 1903.

Contains observations on the geologic structure, ore deposits and mining operations of southwestern Colorado. Description of the American Nettie, Camp Bird, Smug- gler, Tomboy, North Star, Silver Lake, Golden Fleece, Vulcan, Good Hope, Ruby and King mines. Mines of Lake City described. Coal mines of Crested Butte.

24. The sampling and estimation of ore in a mine. N(>w York,

Engineering and Mining Journal, 1904.

Compiled by T. A. Rickard. Discussion by prominent mining engineers of the Camp Bird, Cripple Creek, San Juan, Seven-thirty, Silver Plume, Smuggler Union, and Tomboy mines.

25. The geological distribution of gold. Am. Mining Congress,

Proc., 9th Rept., pp. 226-233, 1906; Mg. Kept., vol. 54, pp. 417419, 1906; Mg. and Sci. Tress, vol. 93, pp. 477- 480, 1906.

26. TiOdes in the Tertiary eruptives of Colorado. Mg. and Sci.

Press, vol. 95, pp. 180-182, Illust., 1907.

27. The historical development of Colorado viewed from a

geological standpoint. Mg. and Sri. Press, vol. 96, pp. 295-296, Illust., 1908.

28. Geological distribution of the precious metals in Colo-

rado. Mg. and Sci. Press, vol. 100, pp. 89-96, 150-155, 316-320, Illust., 1910.

29. Two famous mines. Mg. and Sci. Press., vol. 103, pp. 765-

766, 1911.

Describes and gives history of Independence and Camp Bird mines.

Bies, Heinrich.

1. The clays and clay industry of Colorado. A. I. M. E.,

Trans., vol. 27, pp. 336-340, 1898.

2. The clay-working industry in 1896. U. S. Geol. Surv.,

18th Ann. Kept., pt. 5, pp. 1105-1118, 1897.

264 Bibliography Of Colorado Geology

Eiddle, Frank H.

1. The new pottery and art terra cotta plant of the Van Briggle Pottery Company at Colorado Springs. Am. Ceramic Soc., Trans., vol. 10, pp. 65-75, 1908.

Eiggs, E. S.

1. A new species of Dinictus from the White River Miocene of Wyoming. Kans. Univ. Quart., vol. 4, pp. 237-241, must, 1896.

la. Brachiosaurus altithorax, the largest known dinosaur.

Am. Jour. Sci., 4th ser., vol. 15, pp. 299-306, Illust.,

1903. Abstract : Science, new ser., Apr. 5, 1901. Description of a fossil from Grand River Valley.

Eiggs, Elmer S., and Farrington, 0. C.

1. The Dinosaur beds of the Grand ri\'er valley. Sci. Am. Suppl., vol. 53, pp. 22061-22062, Illust, 1902; Field Columbian Museum, Pub. GO, Geol. Ser., vol. 1, no. 9, pp. 267-274, Illust., 1901.

Bitter, E. A.

1. The new smelter at Salida. E. and M. J., vol. 74, p. 813,

Illust., 1902.

2. Le district aurifre de Cripple Creek et ses rcents d6-

veloppements dans la zone profonde. Annales des

Mines, 10 e sr., t.7, pp. 465487, 1905.

Describes the general geology, the lithology, the veins and their minerals, and the ore deposits of the Cripple Creek gold mining district.

3. Les basins lignitif6res et houillers des Montagues

Rocheuses. Annales des Mines, 10 e sr., t.lO, livr.7,

pp. 5-84, 1906.

An account of the coal beds of the Rocky mountains.

4. Le gisement de cuivere d'Evergreen. Acad. d.Sci. Paris,

Compt. rend., t.l45, pp. 1187-1188, 1907.

Describes the occurrence of a copper deposit at Ever- green, Gilpin County.

5. The Evergreen copper deposit. A. I. M. E., Bull. no. 19,

pp. 33-47, Illust, 1908; A. I. M. E., Trans., vol. 38, pp.

751-765, Illust., 1908.

Describes the structural geology in the immediate vicinity, and the petrology of the ore deposit.

6. The Evergreen copper deposits of Colorado. (Apex, Gil-

pin County.) Mg. World, vol. 28, pp. 485-486, 1908.

Bibliography Of Colorado Geology 265

Bitter, E. A. — Continued.

7. The Montezuma mining district. E. and M. J., vol. 85,

pp. 241-244, Illust., 1908.

Includes notes on the local geology, the vein system, and the occurrence and character of the lead-silyer- ores.

8. The Montezuma mining district, Summit County. Mines

and Minerals, toI. 28, pp. 501-504, Illust., 1908.

Describes the occurrence and character of the ore bodies.

Bobbins, F.

1. Ore occurrence at Leadville. Mg. and Sci. Press, vol. 86, p. 168, 1903.

Bobins, C. E.

1. The Little Annie Mine, Summit, Rio Grande County. E. and M. J., vol. 25, p. 57, 1878.

Bobinson, George H.

1. Map of a portion of underground workings of Fryer Hill, Leadville. 33x39 inches, scale 80 feet to the inch, Leadville, 1881.

Bockwell, A. P.

1. Discovery of the tusk of an elephant in Colorado. Am. Jour. Sci., 3rd ser., vol. 3, pp. 373-374, 1872.

Boger, Otto.

1. Ueber die ELirsche. Correspondenzblatt Vereins Regensb., 1887,- Sept., p. 43, Illust., 1887.

Bogers, A. F.

1. Mineralogical notes, no. 2. Am. Jour. Sci., 4th ser., vol.

12, pp. 42-48, 1901.

Contains description of calcite from Saguache County.

Bogers, A. N.

1. The mines and mills of Gilpin County. A. I. M. E., Trans., vol. 11, pp. 29-51, 1883.

Bogers, Henry Darwin.

1. Some facts in the geology of the central and western portion of North America, collected from the state- ments and unpublished notices of recent travelers. Geol. Soc. London, Proc, vol. 2, pp. 103-106, 1838. Abstract : Neues Jahrbuch, 1838, pp. 436-438.

266 Bibliography Of Colorado Geology

Bohwer, S. A.

1. A fossil larrid wasp. Am. Mus. Nat. Hist, Bull., vol. 24,

pp. 519-520, 1908.

Describes Pison cockerellae n. sp. from the Miocene of Florissant.

2. On the Tentliredinoidea of the Florissant shales. Am.

Mus. Nat. Hist, Bull., vol. 24, pp. 521-530, 1908.

3. The Tertiary Tentliredinoidea of the expedition of 1908

to Florissant. Am. Mus. Nat. Hist., Bull., vol. 24, pp. 591-595, Illust., 1908.

4. A fossil mellinid wasp. Am. Mus. Nat. Hist., Bull., vol.

24, p. 597, 1908.

Describes Mellinus handlirsclii n. sp. from the Miocene of Florissant.

5. Three new fossil insects from Florissant. Am. Jour.

Sci., 4th ser., vol. 28, pp. 533-536, 1909. G. The fossil Ceropalidae of Florissant. Psyche, vol. 16, pp.

23-28, 1909. 7. New Hymenoptera from western United States. Am.

Entomological Soc, Trans., vol. 35, pp. 99-136, 1909.

Includes a description of Passaloecus fasciatus n. sp., a fossil wasp from the Miocene shales of Florissant.

Rolker, Charles M.

1. Notes on certain iron ore deposits in Colorado. A. I. M.

E., Trans., vol. 14, pp. 266-273, 1886.

2. Notes on the Tadville ore deposits. A. I. M. E., Trans.,

vol. 14, pp. 273-292, 1886; E. and M. J., vol. 41, pp. 36-40, 1886.

3. The production of tin. U. S. Geol. Surv., 16th Ann. Kept.,

pt. 3, p. 529, 1895.

Tin reported from Golden.

Ross, G. M.

1. Action of sulphur monochloride on uranium and vana- dium. Mg. Sci., vol. 60, pp. 177, cont., 1909. Review of Colo. 8ch. of Mines, Bull., May, 1909.

Rothwell, R. P.

1. The mineral industry, its statistics, technology' and trade in the United States and other countries from earliest times to the end of 1892. Min. Ind., vol. 1, 1892.

Contains summary of production in Colorado of copper, silver, lead, asphaltum, cement, coal, coke, nickel and cobalt, manganese, petroleum. Reports on the Colo-

Bibliography Of Colorado Gkology 2G7

Bothwell, R. P. — Continued.

rado and American Zinc-Lead Company Smelter, divi- dends paid by the mines, value of coal stock in New York, 1892, Leadville copper ores, and new smelting works in 1892.

2. The mineral industry, its statistics, technology and trade

in the United States and other countries for the year

1893. Min. Ind., vol. 2, 1803.

Summary of production in Colorado of asphaltum, bis- muth, clay, coal, copper, treatment of copper ore, corun- dum, cryolite, fire clay and fire brick, fluorspar, gold, graphite, gypsum, iron ores, pig iron, lead, manganese, marble, molybdenem, petroleum, uranium, silver, tellu- rium, and dividends paid by mines.

3. The mineral industry, its statistics, technology, and trade

in the United States and other countries for the year

1894. Min. Ind., vol. 3, 1894.

Summary of production of coal, coke, copper, corun- dum, cryolite, fluorspar, gold, lead, manganese, onyx, petroleum, pig iron, cement, pyrites, silver, telluride gold ores, stone, mines paying dividends. Special articles by T. A. Rickard on "Mining in Colorado;" by R. H. Rich- ards on "Progress in ore dressing in 1894;" and F. Hobart on "Lead mining."

4. The mineral industry, its statistics, technology and trade

in the United States and other countries for the year

1895. Min. Ind., vol. 4, 1895.

Summary of production of coal, coke, copper, gold, silver, gypsum, kaolin, manganese, petroleum, pig iron, cement, quicksilver. "Report on mining stock exchanges, coal mining machinery, contract prices for mining, use of powder in coal mining. Special articles on "Mining in Colorado" by T. A. Rickard. and "Stamp Milling of gold ores" by the same author.

5. Mineral industi\y, its statistics, technology and trade in

the United States and other countries for the year

1896. Min. Ind., vol. 5, p. 1896.

Summary of production of coal, coke, copper, gold, lead, manganese, petroleum, pig iron, sapphire. Report of dividends from mines, mining exchanges, mining industry in Colorado with special reference to Leadville, Cripple Creek and the Tomboy mine at Telluride.

6. The mineral industry, its statistics, technology and trade

in the United States and other countries for the year

1897. Min. Ind., vol. 6, 1897.

Summary of production of bismuth, clay, coal, coke, copper, gold, gypsum, iron, lead, manganese, petroleum.

268 Bibliography Of Colorado Geology

Kothwell, R. P. — Continued.

pyrite, silver, uranium, telluride ores, volcanic ash. Report of dividends paid by mines, accidents in coal mines, production of gold by districts. Special articles on "Progress in ore dressing," R. H. Richards; "Geology, association and occurrence of the telluride ores," J. F. Kemp; "Progress in the metallurgy of gold and silver ores," W. R. Ingalls; "Gold milling in Gilpin County," by A. L. Collins; "Cyaniding telluride ores," P. Argall.

7. The mineral industry, its statistics, technology, and trade

in the United States and other countries, 1899. Min.

Ind., vol. 8, for 1899.

Summary of production of clay, coal, coke, copper, gold, granite, gypsum, iron, lead, manganese, marble, petroleum, sandstone, silver, zinc. Report of dividends from mines, the stock market and bismuth deposits of the state.

8. The mineral industry, its statistics, technology and trade

in the United States and other countries for the year

1898. Min. Ind., vol. 7, 1898.

Summary of production of clay, coal, copper, gold, grahamite, gypsum, iron, lead, manganese, onyx, petro- leum, pyrite, silver, wolframite, zinc, mine dividends, stock market. Special article on "Progress in metallurgy of gold and silver," by W. R. Ingalls.

9. The present development of the barrel chlorination proc-

ess. Min. Ind., vol. 9, pp. 359-370, 1900.

Discussion of treatment of Cripple Creek ores.

Ruffner, E. H.

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1. Simpson mine, Lafayette, near Denver. Mines and Min- erals, vol. 26, pp. 385-386, II lust., 1906.

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1. The occurrence and treatment of certain gold ores of Park County. A. I. M. E., Trans., vol. 26, pp. 848- 853, 1897.

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1. Mineral waters. U. S. Geol. Surv., Min. Res. 1909, pt.

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1. Operations at the Butterfly mine, Colorado. (Ames.) E. and M. J., vol. 94, p. 497, 1912.

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1. The Portland Mine in Cripple Creek district. Mg. World,

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Gives history of development and describes mine and milling process.

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Schaaf-Regelman, E.

1. Rare metals and minerals and their uses. Eng. Mag.,

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1. Mineralogieal notes. U. S. Geol. Surv., Bull. 262, pp. 121-

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Gives analyses of rutile from St. Peters Dome and West Cheyenne Canyon in El Paso County; hinsdalite from Lake City, Hinsdale County; and natramblygonite from Canon City.

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96-112, Illust, 1855.

Discusses the general geology and paleontology.

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1. Catalogue and index of the publications of the Hayden, ' King, Powell and Wheeler surveys : namely. Geological and geographical survey of the territories; Geological exploration of the 40th parallel; Geographical and geological survey of the Rocky mountain region ; Geo- graphical surveys west of the 100th Meridian. U. S. Geol. Rurv., Bull. 222, 208 pp., 1904.

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1. Cyanidation of gold and silver ores. Colo. Sch. of Mines, Quart., p. 13, Jan., 1912.

SchoU, G. P.

1. Gold milling. Electro, and Met. Ind., vol. 14.

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1. The Gold Prince mine and mill, Animas Forks. Mines and Minerals, vol. 27, pp. 337-345, Illiist., 1907.

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1. The Durango-Gallup coal field of Colorado and New Mex- ico. U. S. Geol. Surv., Bull. 285, pp. 241-258, 1906. Preliminary report of BulL 316.

Schnchert, 0.

1. A synopsis of American fossil Brachiopoda including bibliography and synonymy. U. S. Geol. Surv., Bull. 87, 464 pp., Illust., 1897.

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1. Reservoirs for irrigation. U. S. Geol. Surv., 18th Ann.

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1. Notes on the ore occurrence of the Red Mountain dis- trict. Colo. Sci. Soc, Proc, vol. 3, pp. 77-85, 1889; A. I. M. E., Bull. no. 2, pp. 267-274, 1905; A. I. M. E., Trans., vol. 18, pp. 139-145, 1890; Min. Ind., vol. 5, pp. 203-204, 1889.

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Ouray County. A. I. M. E., Trans., vol. 36, pp. 31-39, 1905; A. 1. M. E., Bull. no. 2, pp. 267-274, Illust.,

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Mentions an imaginary town, Golden, in the western part of Colorado placed on the maps.

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1. A new marsupial from the Miocene of Colorado. Am.

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Scudder, Samuel II.

1. The insects of ancient American Tertiary beds of Green

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Contains description of fossils from Fossil Canyon and Chagrin Valley near the junction of the White and Green Rivers.

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Proc, vol. 11, pp. 117-118, 1868.

3. The Tertiary Physopoda of Colorado. Hayden Surv.,

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Contains description of Litliasotrips and Palaeotrips.

4. Fossil Orthoptera from the Rocky Mountain Tertiaries.

Hayden Surv., Bull., vol. 1, no. 6, pp. 447-449, 1876.

5. Critical and historical notes on Forficularidae. Boston

Soc. Nat. Hist., Proc, vol. 18, pp. 287-332, 1876. Includes two fossils from Florissant.

6. Fossil Coleoptera from the Rocky Mountain Tertiaries.

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Scndder, Samuel H. — Continued*

7. Brief synopsis of North American earwigs, with an ap-

pendix on the fossil species. (Fossils from near Florissant.) Hayden Surv., Bull., vol. 2, no. 3, pp. 249-260, 1876.

8. The first discovered traces of fossil insects in the Amer-

ican Tertiaries. Hayden Surv., Bull., vol. 3, no. 4,

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Hymenoptera, Diptera, Coleoptera, Neuroptera, Hemlp- tera. Describes a number of specimens from Chagrin Valley and from Fossil Canyon, Utah.

9. An account of some insects of unusual interest from the

Tertiary rocks of Colorado and Wyoming. Hayden

Surv., Bull., vol. 4, no. 2, pp. 519-543, 1878.

Includes Prodryas, Palemobolils, Parloamia, Petrolys- tra, Lithymetes, Dysagrlon, Holcorpa. The greater num- ber of specimens collected were from Florissant.

10. The Tertiary lake basin at Florissant between South and

Hayden parks. Hayden Surv., 12th Ann. Rept., pt. 1, pp. 271-293, 1878.

11. White ants in the American Tertiaries. Harvard Univ.

Bull., vol. 2, p. 219, 1881.

Discusses the relationship of six Florissant species to those from other localities and notes indications of warm climate.

12. Insects of the Amyzon shales of Colorado. Am. Nat.,

vol. 16, pp. 159-160, 1882.

Discusses climatic conditions.

13. Fossil spiders. Harvard Univ. Bull., vol. 2, pp. 302-303,

1882. Reprint: Our knowledge of fossil spiders. Field Nat., vol. 1, pp. 61-63 (Manchester, Eng.), 1882.

14. Notes on some of the Tertiary Neuroptera of Florissant,

Colorado, and Green River, Wyoming. Boston Soc. Nat. Hist., Troc, vol. 21, pp. 407-409, 1882.

15. The Tertiary lake basin of Florissant, between South and

Hayden parks. Hayden Surv., Bull., vol. 6, no. 2,

pp. 279-300, map, 1882. Abstracts: Am. Jour. Sci.,

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Geology and paleontology; includes discussion of vul- canism, conditions of sedimentation, gives microscopic descriptions of tufa by M. E. Wads worth, and geologic sections by S. H. Scudder and A. L#akes.

274 Bibliography Op Colorado Geology

Scudder, Samuel H. — Continued.

16. An alphabetical list of all generic names that have been

employed by naturalists for recent and fossil animals from earliest times to the close of the year 1879. U. S. Nat. Mils., Bull., vol. 19, 1882.

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19. Triassic insects from the Rocky Mountains. (Fairplay.)

Am. Jour. Sci., 3rd ser., vol. 28, -pp. 199-203, 1884; Am. Nat, vol. 17, p. 73, 1883.

20. Description of an articulate of doubtful relationship

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21. Notes on Mesozoic cockroaches. Acad. Nat. Sci. Phila.,

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Hist., Mem., vol. 3, pp. 439-485, Illust., 1886.

23. The cockroach of the past. Miall and Denny. The

structure and life history of the cockroach, pp. 205- 220, Illust. (London), 1887.

24. Systematic review of our present knowledge of fossil in-

sects, including myriapods and arachnids. U. S.

Geol. Surv., Bull. 31, 128 pp., 1886.

Fossils from Oligocene at Florissant.

25. Myriai)odes. Arachinides. Insectes. Zittel, Traite' de

paleontologie. Traduit per le Dr. C. Marrois, 2, Paleoz., pt. 1, pp. 720-833, Illust., 1887.

26. Fossil buttei-flies of Florissant. U. S. Geol. Surv., 8th

Ann. Kept., pt. 1, pp. 433-474, Illust., 1889.

27. The Tertiary insects of North America. Hayden Surv.,

Mon., vol. 13, 734 pp., Illust., map, 1890.

Localities where Tertiary insects have been found in America. Myriapoda, Arachnida, Neuroptera, Orthop- tera, Hemiptera, Hymenoptera. Systematic list of spe- cies with their distribution, and comparison with other species living and fossils. A description of the Floris- sant region is tal<en from Bull., vol. 6, no. 2 of the Hayden Survey. The White River district is also de- scribed.

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ton Soc. Nat. Hist., Proc, vol. 24, pp. 562-579, 1890. Shows definite relation of western Tertiary fauna to that at present occupying the region, with, however, distinct tropical affinities.

BlBLlCKmAPHY OF COLORADO GEOLOGY 275

Scudder, Samuel H. — Continued.

29. Work of a decade upon fossil insects, lcS80-1889. Psyche,

vol. 5, pp. 287-295, 1890.

30. The fossil insect localities in the Rocky Mountain region.

Psyche, vol. 5, p. 363, 1890.

31. A classed and annotated bibliography of fossil insects.

U. S. Geol Surv., Bull. 69, 101 pp., 1890.

32. The fossil insects of North America, with notes on some

European species. Vol. 1, 455 pp. Illust., vol. 2, 734 pp. Illust., New York, 1890.

33. Index ta the known fossil insects of the world including

myriapods and arachnids. U. S. Geol. Surv., Bull.

71, 744 pp., 1891.

I. Paleozoic fossils, Myriapoda, Arachnida, Palaeodic- tyoptera. II. Mesozoic fossils, Myriapoda, Arachnida, Hexapoda. III. Cenozoic fossils, Myriapoda, Arachnida, Hexapoda.

34. Brief notes on a fossil butterfly (Barbarothea florissanti).

Psyche, vol. 0, pp. 101-102, 1891.

Notes discovery of fossil insects at White River and in Roan Mountains of western Colorado.

35. Fossil insects. Psyche, vol. (5, p. 118, 1891.

Discusses fossil plant lice from Florissant, and re- marks on Barbarothea.

36. Some insects of special interest from Florissant, and

other points in the Tertiaries of Colorado and Utah. U. S. Geol. Surv., Bull. 93, 25 pp., Illust, 1892. Ab- stract: Am. Nat., vol. 27, pp. 558-559, 1893.

37. Tertiary Rhynchophorous Coleoptera of the United

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38. The American Tertiary Aphidae. U. S. Geol. Surv., 13th

Ann. Kept., pt. 2, pp. 347-356, Illust, 1893. Abstract :

Am. Nat., vol. 28, p. 881, 1894.

Describes the general characters of American fossil plant lice and gives a list and a brief description of various species and the localities where they were found.

276 Bibliography Of Colorado Geology

Scudder, Samuel H. — Continued.

39. Tertiary Tipulidae, with special reference to those of

Florissant. Am. Phil. Soc, Proc, vol. 32, pp. 163-245, Illust., 1894. Abstracts: Am. Nat., vol. 28, pp. 951- 952, 1894; Am. Jour. Sci., 3rd ser., vol. 47, p. 481,

40. Revision of the American fossil cockroaches, with de-

scription of new forms. U. S. Geol. Surv., Bull. 124, 176 pp., Illust., 1895.

Gives faunal lists of tde American cockroaches and tables of distribution, and discusses the character of Mylacridae.

41. Adephagous and Clavicorn Coleoptera from the Tertiary

deposits at Florissant, with descriptions of a few other forms and a systematic list of the non-Rhyn- chophorus Tertiary Coleoptera of North America. U. S. Geol. Surv., Mon. 40, 148 pp., Illust, 1900.

Sebben, E. W.

1. Molybdenum, its uses, composition, and occurrence. Ores and Metals, vol. 14, no. 10, p. 25, 1905.

Deposits of Gunnison and Teller counties mentioned.

Seymore, R. D.

1. Aerial tramways in San Juan Mountains. Mines and Mining, vol. 16, no. 25, pp. 22-25, 1908.

Shaler, Millard K.

1. A reconnaissance survey of the western part of the Du- rango-Gallup coal field of Colorado and New Mexico. U. S. Geol. Surv., Bull. 316, pp. 376-426, Illust., 1907.

Shaler, Millard K., and Gardner, J. H.

1. Clay deposits of the western part of the Durango-Gallup coal field of Colorado and New Mexico. U. S. Geol. Surv., Bull. 315, pp. 296-302, 1908. Abstract: Mines and Mining, vol. 15, Feb. 28, 1908.

Shaler, N. S., and Davis, W. M.

1. Illustrations of the earth's surface. Glaciers, IV, 198 pp., Illust, Boston, 1881. Reviewed by W J McGee, Science, (edited by J. Michels), vol. 2, pp. 581-584, 624-630, 1881.

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1. Notes on tellurium-bearing gold ores. Ec. GeoL, vol. 6,

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Brief reference to tellurium-bearing gold ores of Clear Creek, San Juan, Ouray, Cripple Creek, and Summit County.

Shedd, G. W.

1. The fault of the Yankee Hill silver deposits of Leadville. Am. Nat., vol. 15, pp. 338-339, Illust, 1881.

Shepard, C. U.

1. Brief notices of several localities of meteoric iron. Am.

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Contains brief description of meteorite from Colorado.

Shimer, H. W., and Oraban, A. W.

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Shnbart, B.

1. Midland mine of the Rocky Mountain Fuel Company.

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1. The telluride ores of the Red Cloud and Cold Springs

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Describes the minerals and their occurrence and makes comparisons with European tellurides.

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1. New map of Colorado, with appendix containing alpha- betical register and indexed location of all peaks, passes, water courses, and plats of all patented mines, etc. 64x82 inches, colored, scale 6 miles to the inch. Denver, 1882.

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1. Cripple Ciek, Colorado. E. and M. J., vol. 59, pp. 103-

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1. The ehlorinatiou mill of the Union Gold Extraction Com- pany at Florence. Colo. Sch. of Mines, Bull., vol. 1, pp. 129-132, 1901.

Smith, Charles E.

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1. The occurrence and behavior of tellurium in gold ores, most particularly with reference to the Potsdam ores of the Black Hills, South Dakota. A. T. M. E., Trans., vol. 26, pp. 485-515, 1896.

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1. On the remarkable problem presented by the crystalline development of calaverite. Min. Mag., vol. 13, pp. 122-150, Illust., 1902. Abstract : Am. Jour. Sci., 4th ser., vol. 12, p. 241, 1901.

Smith, J. Alden.

1. Report on the development of the mineral, metallurgical,

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Includes: history of mining and aid of railroads; mining in Boulder, Chaffee, Clear Creek, Custer, Dolores, Fremont, Gilpin, Grand, Gunnison, Hinsdale, Lake, Pit- kin, Rio Grande, Routt. Summit, Saguache and San Juan counties, with description of mines and discussion of ore deposits and production and ore treatment. Coal mines, production, and analyses of coals; petroleum, iron, build- ing stone, gypsum, mineral springs with analyses of the waters, and a catalogue of the principal minerals in Colorado.

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1. A new meteoric iron, "the Colorado meteorite" from

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1. Notes on the crystal beds of Topaz Butte. Am. Jour.

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1. Some geological features of the San Juan country. Ores

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SpaTiIding, M. B.

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1. The Upper Cretaceous section in southwestern Colorado.

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Gives a brief account of the geography and geology of the region, and describes the mining developments.

Spenoer, Arthur Coe, and Cross, Whitman.

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Spencer, Arthur Coe, and Dirty, Q. H.

1. The Devonian in southwestern Colorado. Science, new

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Contains summary of paper read before the Geological Society of Washington.

Spencer, L. J.

1. Knargite. Min. Mag., Jour. Min. Soc. Tjondon, vol. 11, pp. 69-79, 1895.

Sperry, E. A.

1. Handling of slimes, with special reference to sizing and

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Sperry, E. S., and Penfleld, S. L.

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Spurr, Joshua Edward.

1. Geologj- of the Aspen mining district, Colorado, with

atlas U. S. Geol. Surv., Mon. 31, 260 pp. Illust.,

Introductory statement by S. F. Emmons, pp. XVII- XXXII. Includes an account of the development of the Aspen mining district and the geologic investigations that have been made in the region. Describes the char- acter and occurrence of the Cambrian, Silurian, Car- boniferous, Juratrias, and Cretaceous sediments, and the igneous rocks of the region. Includes description of the mines, a discussion of the character of the ore deposi- tion, and a discussion of fault phenomena.

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Am., Bull., vol. 12, pp. 217-270, Illust, 1901. Ab- stracts: Science, new ser., vol. 12, pp. 884-885; vol. 13,

p. 98, 1901.

Briefly describes the rocks of the region and the asso- ciated ores.

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1909. Abstract : Mg. World, vol. 31, pp. 749-752, 1909.

Gives description of general geology, the sedimentary series, the intrusive rocks, deformation by folding and faulting, and ore deposits with theory of their origin.

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1. Preliminary report on ore deposits in the Georgetown

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1. Economic geology of the Georgetown quadrangle (to gether with the Empire district), Colorado, with general geology by Sydney H. Ball. U. S. Geol. Surv., Prof. Paper 63, 422 pp., Illust., maps, 1908. Ab- stract : Mg. Sci., vol. 59, pp. 249-264, 1909.

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1. Mineral waters. U. S. Geol. Surv., Miu. Res. 1908, pt. 2, pp. 755-790, 1909.

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1. Paleontological notes. Colo. Sci. Soc, Proc, vol. 2, pp.

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Cretaceous sections described on the Arkansas River at Colorado Springs, near Denver, on the Gunnison River, in Huerfano Park, near Mancos, with local lists of Cre- taceous fossils.

284 Bibliography Of Colorado Geology

Stanton, Timothy W.— Continued.

2a. Pseudoceratites of the Cretaceous. U. S. Qeol. Surv., Mon. 44, 351 pp., Illust, 1903. Text by A. Hyatt, edited by T. W. Stanton.

3. The Morrison formation and its relations with the

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brate faunas in North America. Jour. Qeol., vol. 17, pp. 410-423, 1909.

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Stanton, Timothy W., and Hatcher, J. B.

1. Geolog}' and paleontology of the Judith River Beds, with a

chapter on fossil plants, by F. 11. Knowlton. U. S.

Geol. Surv., Bull. 257, 174 pp., Illust, 1905.

References to vertebrate fossils from the Cretaceous of Colorado.

Stanton, Timothy W., and Knowlton, F. H.

1. Stratigraphy and paleontology of the Laramie and related

formations in Wyoming. Geol. Soc. Am. Bull., vol,

8, pp. 127-156, 1897. Review : by A. Hollick, Torrey

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Describes the stratigraphy and paleontology of the various beds.

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1. Colorado output for 1902, gold, silver, lead and copper. Mg. Kept., vol. 45, p. 273, 1902.

State Commissioner of Mines.

1. Precious metal production in Colorado. Mg. Kept., vol.

51, p. 286, 1905.

Production of gold, silver, lead, copper, and zinc by counties.

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Steiger, G.

1. The action of silver nitrate and thallous nitrate upon certain natural silicates. U. S. Geol. Surv., Bull. 262, pp. 75-90, 1905.

Analysis of analcite and thomsonlte from Golden.

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Sterrett, Douglas B.

1. Mica. U. S. Geol. Surv., Min. Res. 1908, pt. 2, pp. 743-754,

Description of deposits near Canon City.

2. Precious stones. U. S. Geol. Surv., Min. Res. 1908, pt.

2, pp. 805-859, 1909.

Occurrence of agates in Morrison formation at Garden Park near Canon City and Guffy; amethyst in Fremont County; beryl, aquamarine, etc., from Chaffee County; epidote from Canon City; amazonstone, moonstone, etc., from Pikes Peak region, Teller County; garnets from Grape Creek and Chaffee County and Custer County; rose quartz from Fremont County; tourmaline from near Canon City and Conejos County.

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Describes agates from near Canon City, beryl from Mount Antero, amazon stone, from north of Florissant, phenacite from Mount Antero, smoky quartz from the west side of Pikes Peak, turquoise of Lajara, Conejos County.

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Steuart, William M.

1. Colorado; mines and quarries. 12th Census U. S., Special

reports, mines and quarries, 1902, pp. 183-188, 1905.

Statistical and historical account of the products of Colorado mines and quarries. The same volume con- tains numerous tables of production, cost of production, etc., which include figures for Colorado.

Stevens, E. A.

1. An occurrence of liniburgite in the Cripple Creek district.

A. I. M. PI, Trans., vol. 30, pp. 759-764, lUust., 1901.

2. Basaltic zones as guides to ore deposits in the Cripple

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Stevens, R. P.

1. On the San Juan Mountains. New York Acad. Sci., Trans., vol. 5, pp. 121-130, 1886.

Stevenson, J. J.

1. The lignites of Colorado, South Park. E. and M. J., vol.

17, p. 52, 1874.

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General physical features; topography, climate and agricultural resources; metamorphic rocks; Paleozoic. Silurian, Carboniferous, Mesozoic, Triassic, Jurassic, and Cretaceous; age of the lignites; eruptive rocks; surface geology, glacial action, ancient lakes, erosion; mineral springs; structure and age of the Rocky Mountain system.

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in Colorado. Am. Jour. Sci., 3rd ser., vol. 13, pp. 297-299, 1877.

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G. Notes on the Laramie group of southern Colorado and northern New Mexico, east from the Spanish Ranges. Am. Jour. Sci., 3rd ser., vol. 18, pp. 129-134, 1879.

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rado and New Mexico from Spanish Peaks to the south, field season of 1878 and 1879. Wheeler Surv.,

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maps, 1881.

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Example of contact metamorphism in Colorado, p. 52.

Stewart, J. E., FoUansbe, R., and Meeker, R. I.

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St. John, 0.

1. Notes on the geology of northeastern New Mexico. Hay- den Surv., Bull., vol. 2, no. 4, pp. 279-308, Illufrt:., maps, 1876.

The upper basin of the Canadian; the Tertiary Pla- teau; the Moreno Valley; theVermeJo parks; the CapullxL Contains notes on the stratigraphy, eruptive rocks* eco- nomic geology, and incidentally gives notes on the geol- ogy of adjacent parts of Colorado Cretaceous.

Stoddard, W. B., and Palmer, C. S.

1. The dike on the Columbia vein in the Ward district, Boulder County. See Palmer, C. S., and Stoddard, W. B.

Stone, G. H.

1. A living glacier on Ilagues Peak. Science, vol. 10, pp.

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2. Notes on the asphaltum of Utah and Colorado. Am.

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Describes the rocks and conditions for their formation.

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1. Stratigraphic relations of the Jjivingstone formation of Montana. Ec. Geol., vol. 5, pp. 551-557, 652-669, 741- 764, Illust., map, 1910. Abstracts : Science, new ser., vol. 32, pp. 218-219, 1910; Oeol. Roc. Am., Bull., vol. 21, p. 782, 1910.

Stone Trades Journal.

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Storms, W. H.

1. Mining in the San Juan. Mg. and Sci. Press, vol. 101, pp. 610, 737, 866, 1910.

Stose, George W.

1. Description of the Apishapa quadrangle. U. S. Geol.

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Describes the stratigrraphic, structural and economic geology of the quadrangle, and discusses water resources and artesian conditions. Includes chapter on the igneous rocks of the district by Whitman Cross. Topographic and geologic maps and sections.

Storrs, L. S.

1. The Rocky Mountain coal fields. U. S. Geol. Surv., 22nd

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Describes location, extent, geologic relations, and de- velopment of coal areas in the Rocky Mountain region, the occurrence, and extent of coal beds, and the character and composition, and utilization of the coal and lignite. Colorado reference pp. 415-471.

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Striel, William.

1. The origin and use of the natural gas at Manitou. Colo.

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Strong, W. C.

1. The sanitary chemical character of some of the artesian

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Struthers, J.

1. The mineral industry, its statistics, technology and trade

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Summary of production of clay, coal, coke, copper, gold, gypsum, bismuth, iron, lead, manganese, silver, tungsten, zinc, stoclt market. Article on "The present development of the barrel chlorination process," by J. B. Rothwell.

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Summary of production of cement, clay, coal, coke, gold, gypsum, iron, lead, manganese, natural gas, petro- leum, silver, zinc, bismuth, copper smelters at Salida, mining stock exchanges, smelting ore and matte at Lead- ville, and Robinson. "A review of the cyanide process during the year 1902," by C. H. Fulton; **Mill practice in Colorado," by R. H. Richards.

Strutt, R. J.

1. The radio-active minerals. Proc. Roy. Soc, London, vol. 76, 1905.

Stutz, S.

1. Coal washing. A. I. M. E., Trans., vol. 9, pp. 461-477,

Plant of Colorado Fuel and Iron Company at Elmoro described.

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1. The face of the earth. 4 vol., Oxford Press, 1904 to 1909.

Discusses Colorado mountains; their origin, structures, age.

Sutton, J. B.

1. Notes on a Tsetse-fly in Colorado. Middlesex Hospital Jour., vol. 11, no. 6, no. 64, pp. 222-223, 1907.

Swart W. G.

1. The zinc industry of the lioeky Mountain region. Am.

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Sweetser, A. L.

1. Bismuth in Colorado. Mg. Sci., vol. 64, p. 206, 1911.

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Taff, Joseph A.

1. The Durango coal district. U. S. Geol. Surv., Bull.. 316,

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Taflf, Joseph A. — Continued.

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1. Descriptive catalogue of the collection of gems of the

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1. Construction costs at the New Portland mill, Cripple Creek. Mg. and Sci. Press, vol. 104, p. 12, 1912.

Taylor, J. W.

1. Gold mines east of the Rocky Mountains. Report on

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Taylor, T. U., and Hoyt, J. C.

1. Report of progress of stream measurement for the year

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Taylor, T. U., and Lamb, W. A.

1. Surface water supply of the Western Gulf and Rio

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Stream measurements on the Rio Grande.

Teal, G W.

1. The mineralogical and geological formations of Boulder

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Thayer, H. L.

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1. Grand River coal measures. K. and M. J., vol. 34, p. 345, 1882.

Thorn, W. T.

1. Mineral resources of the United States, 1906. U. S. Geol.

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Summary of production of almandite, ammonia, beryl, bismuth, brick and tile, cement, clay, coal, coal tar, coke, copper, fluorspar, gas, gas coke, glass sand, gold by coun- ties, granite, graphite, gypsum, iron ores, lead, lime, lime- stone, manganiferous iron ores, mica, mineral waters, molybdenum, monzanite, natural gas, opalized wood, pe- troleum, pig iron, pottery, sand and gravel, sandlime brick, sandstone, tourmaline, tungsten, uranium, vana- dium and zinc.

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Thomas, Cyrus.

1. Agriculture in Colorado. Hayden Surv., 3rd Ann. Rept.,

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Thomas, Kirby.

1. Mining in Colorado, 1907. Mg. World, vol. 28, pp. 163-

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Thome, H. E.

1. Forty yeai*s of mining progress. Mg. and Ind. Rept.,

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Thompson, A. H.

1. Report upon the location and survey of reservoir sites

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Thorn, W. E.

1. Hydraulic mining in Colorado. Mg. and Sci. Press, vol. 93, p. 689, 1906.

Thornton, William N., Jr.

1. An association of enargite, covellite, and pyrite from Ouray County. Am. Jour. Sci., 4th ser., vol. 29, pp. 358-359, 1910.

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Tilden, George C.

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Tillman, S.E.

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1. Cyanide precipitation and clean-up at the Portland mill. W. Chem. and Met., vol. 4, p. 17-20, 1908.

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Gives a general account of the geology and the occur- rence of the gold ore deposits and of the mining opera- tions.

Tobish, Theodore, Meeker, R. I., and Hinderlider, M. C.

1. Destructive floods in the United States, 1904. See Murphy, E. C, and others, 1.

Toll, R. H.

1. La Plata Mountains. Mg. and Sci. Press, vol. 97, pp.

741-744, Illust., 1908.

Includes an account of the geology of the region and of the character, occurrence, and relations of the gold ores.

Tolman, C. P., Jr.

1. Some mines of Rosita and Silver Cliff, bv S. F. Emmons. Jour. Geol., vol. 5, pp. 856-857, 1897.

Tonga, Thomas.

1. The less known gold fields of Colorado. Eng. Mag., vol.

11, pp. 1029-1043, Illust., 1896.

History and description of Gunnison County mines.

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vol. 12, pp. 765-780, Illust., 1897.

Description of Bob Tail at Black Hawl, Revenue at Ouray, Cowen at Aspen, Smuggler-ljnion at Telluride, Lamartine at Idaho Springs, Newhouse, United States at Idaho Springs, Pennsylvania and Knickerbocker at Georgetown, and Leadville Yak and Agwalt.

296 . Bibliography Of Colorado Gbolooy

Tonge, Thomas — Contiuued.

3. The cyanide process for gold ores in western America.

Eng. Mag., vol. 14, p. 652664, Illust., 1897.

4. Electricity in the mines at Cripple Creek. Eng. Mag.,

vol. 17, pp. 953-967, Illust., 1899.

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Toula, F.

1. Geologische Forschungsergebnisse aus dem Flussgebiet des Colorado. Ein Vortrag gehalten im Vereine zur Verbreitung naturwissenschaftlicher Kenntnisse in Wien am 5. Janner 1887, 51 pp., Wien, 1887.

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1. Das Pechblende-Vorkommen in Gilpin County. Oester-

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1. The new ore dressing and metallurgical experimental

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la. A classification of mountain ranges according to their structure, origin, and age. Appalachia, vol. 6, pp. 191-207, 1891.

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Albany,

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Vaillant, Lon.

1. Sur la pr(sence du tissu osseux chez certains poissons des terrains palozoiques de Canyon City, Colorado. Acad, des Sci. (Paris), Compt. Rend., t. 134, pp.

1321-1322, 1902.

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1. The Territory of Colorado. Ain. Jour. Sci., Ist ser., vol.

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Physiography described.

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1. Notes on the geology of the western slope of the Sangre

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Van Diest, P. H.

1. Concentration of Caribou ores. Mg. Rev., vol. 5, no. 5,

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Cost of mining and milling Caribou ores.

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oscillations of the water level, and the average available supply of artesian water in this basin. Considers that at about 1500 feet in depth a supply of water can be obtained from the basal sandstones of the Laramie.

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Contains observations on occurrences of rock and ores, and describes the efforts to find tin in the Greenhorn Mountains of Colorado. Discussion by R. C. Hills and C. S. Palmer.

Van Hise, C. B.

la. The pre-Cambrian rocks of the Black Hills. Qeol. Soc, Am., Bull., vol. 1, pp. 203-244, Illust, 1890. Abstract : Am. Nat, vol. 24, pp. 291, 954, 1070-1071, 1890.

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Section 6 deals with Colorado and northern New Mex- ico, pp. 308-324. Review of literature of the Front Range, north and east Arkansas, Wet and Sangre de Cristo* mountains; Front Range of southern Colorado and north- ern New Mexico, Park Range, Sawatch Mountains, Elk Mountains, Grand River, Gunnison River, Quartzite Mountains, La Plata Mountains, with summary. Dis- cussion of principles, character, origin and delimitations of Archean.

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S. Geol. Surv., 16th Ann. Kept., pt 1, pp. 581-872, Illust, maps, 1896. Reviews: Jour. Geol., vol. 4, pp. 195-213, 312-353, 449-453, 593-629, Illust., 1896 ; Am. Jour. Sci., 4th ser., vol. 2, pp. 205-213, 1896; Stone, vol. 14, pp. 26-37, Illust., 1896.

Includes a section on the Cordilleras, pp. 815-825.

302 Bibliography Of Colorado Geology

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3. Metamorphisni of rocks and rock flowage. Geol. Soc.

Am., Bull., vol. 9, pp. 269-328, Illust, 1897. Ab- stracts: Am. Jour. Sci., 4tli ser., vol. 6, pp. 75-91, 1898; Am. Geol., vol. 22, pp. 378-379, 1898.

Describes the physico-chemical principles operative in the alteration of rocks and their application to the changes in the earth's crust, and the general character of the molecular dynamic action accompanying it. Con- tains analyses of slates and shales, soils and clays from Colorado.

4. Some principles controlling the deposition of ores, A.

I. M. E., Trans., vol. 30, pp. 27-177, 1900. (Discus- sion on pp. 424, 578 and in vol. 31, pp. 936-965) ; Jour. Geol., vol. 8, pp. 730-770,' 1900.

Reference to ore deposits of Enterprise mine, Rico; Cripple Creek; Aspen; Geyser mine, Custer County; and Silver Plume.

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vol. 13, pp. 2-5, 1901.

6. A treatise on metamorphism. U. S. Geol. Surv., Mon.

47, 1286 pp., Illust., 1904.

Description of ores of Enterprise mine, Rico, Aspen, Leadville and San Juan.

Van Hise, C. B., and Leith, C. K.

1. Pre-Cambrian geology of North America. U. S. Geol.

Surv., Bull. 360, 935 pp., Illust., map, 1909.

Correlation of pre-Cambrian rocks of Colorado; sum- mary of literature bearing on pre-Cambrian rocks, and summary of present knowledge of pre-Cambrian rocks of the Front Range, Wet and Sangre de Cristo, Park, Sa- watch and adjacent valleys. Grand, and Gunnison, Needle Mountains, Uncompahgre, Rico and La Plata mountains.

Van Horn, Prank B.

1. A new occurrence of proustite and argentite. Am. Jour.

Sci., 4th ser., vol. 25, pp. 507-508, 1908.

Describes the character, composition, and occurrence of these minerals in Summit County.

2. Occurrence of pi-oustite and argentite at the California

mine, near Montezuma. Geol. Soc. Am., Bull., vol. 19, pp. 93-98, 1908. Abstract : Science, new ser., vol. 27, p. 405, 1908.

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3. Andesite rocks near Silverton. (ieol. Soo. Am., Bull.,

vol. 12, pp. 4-9, 1900.

Describes the megascopic, microscopic and cliemical characters of the rocks.

Van Wagenen, H. R.

1. Tungsten in Colorado. Colo. Sch. of Mines, Bull., vol.

3, pp. 138-1G9, Illust., 1905. Abstracts: Mg. Mag.

vol. 13, pp. 327-329, 190G; Oies and Metals, vol. 15,

no. 10, p. 14, Illust., lOOG.

Describes the tungsten deposits of Boulder County and of the San Juan; mines, mills, production, uses and de- scription of difiTerent forms, analyses and tests.

2. The Cripple Creek district of today. Mines and Mining,

vol. 15, no. 15, pp. 3-7, 1908.

Van Wagenen, Theodore F.

1. Sections in mine shafts near Ix?adville. Columbia Sch.

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Discussion of mining of silver, copper, gold, quiclt- silver, lead, and aluminum in Colorado.

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Discusses the probable oil fields of Colorado.

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Tables of production of gold, silver, copper,' lead and zinc from 1896 to 1909. Also notes on the production of manganese, uranium, and vanadium.

Veatch, A. C.

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Veatch, A. C, Puller, M. L., and Lines, E. T.

1. Record of deep wells drilled for 1904. See Fuller, M. L., Lines, E. T., and Veatch, A. C.

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Vinton, P. L.

1. Silver Cliff. E. and M. J., vol. 27, p. 57, 1879.

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110-111, Illust., 1879.

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E. and M. J., vol. 25, pp. 342 343, 1878.

Vivian, A. P.

1. Wanderings in the western land. London, 1879.

Contains geological map from Colorado to the Pacific, scale, 45 miles to the inch.

Vogdes, A. W.

1. A bibliography of Paleozoic Crustacea from 1698-1889, including a list of North American species and a systematic arrangement of genera. U. S. Qeol. Surv., Bull. 63, 177 pp., 1890.

Vogt, J. H. L.

1. Problems in the geology of ore deposits. A. I. M. E., Trans., vol. 31, pp. 125-169, 1901.

Wadsworth, Martin E.

1. Tufa from Florissant. Hayden Surv., 12th Ann. Rept.,

pt. 1, pp. 276-278, 1883.

A microscopic description of material submitted by S. H. Scudder. The same article published in Bull, vol. 6, no. 2; also Hayden Surv. Rept, vol. 13, pp. 23-25,

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Reference to Colorado School of Mines.

Wadsworth, Martin E., and Whitney, J. D.

1. The Azoic system and its proposed subdivisions. See Whitney, J. D., and Wadsworth, M. E.

Wahlgreen, G. A.

1. The Colorado Mining Directory. Published by author, 1748 Stout St., Denver, 1902.-

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Walcott, Charles Doolittle.

1. The North American continent during Cambrian times.

U. S. Geol. Surv., 12th Ann. Kept., pt. 1, pp. 523-568,

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Contains discussion of pre-Cambrian and Cambrian geography and deposits of the Cambrian sediments in the Rocky Mountains.

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3. Preliminary notes on the discovery of a vertebrate fauna

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Bull., vol. 3, pp. 153-167, Illust.; discussion pp. 168-

171, 1892. Abstract: Am. Nat. vol. 27, pp. 268-269,

Describes the locality near Canon City in which fossils were found, gives the vertical section, and names the fossils found in the different beds. The vertical range of the fossils is 75 to 80 feet of the Harding quarry sec- tion, which extends horizontally 8 miles. The evidence of the existence of vertebrates is confined to plates and scales of ganoid fishes and a chordal sheath of a fish allied to Chimaera.

3a. Affindung von fischresten in Untersilur. Neues Jahrbuch

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Includes a description of sediments deposited in the Cordilleran sea, and discusses duration of Paleozoic time in the Cordilleran area.

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Surv., 18th Ann. Kept., pt. 1, pp. 184-221, 233, 350-

360, 1897.

Triangulation and spirit leveling from stations in Prowers, Otero, Lincoln, Las Animas. Pueblo, El Paso. Huerfano, Fremont and Custer counties.

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Walcott, Charles Doolittle — Continued.

8. Cambrian Brachiopoda: Obolus and Lingulella, with

description of new epeeies. U. S. Nat. Mus., Proc.,

vol. 21, pp. 385-420, Illust, 1899.

Contains description of Obolus loperi, n. sp., pp. 389- 390, from Cement Creek, near Crested Butte.

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Includes list of publications of the United States Geo- logical Survey.

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States Geological Survey. U. S. Geol. Surv., 26th Ann. Rept., 322 pp., Illust., 1905.

14. Cambrian Brachiopoda with descriptions of new genera

and species. U. S. Nat. Mus., Proc, vol. 28, pp. 227-

337, 1905.

Contains a description of Syntrophia nundina, n. sp., p. 292, from the limestone in Williams Canyon above Manitou.

15. Cambrian Brachiopoda. U. S. Geol. Surv., Mon. 51, part

I., text, 782 pp., part II., plates, 1912.

Wallace, Samuel J.

1. Geologiral note on the region of Silver Cliflf. Kansas City Rev., vol. 4, pp. 205-206, 1881.

Walker, T. L.

1. Tungsten, its uses and geological occurrence. Canadian Dept. Mines, Mines Branch, 56 pp., Illust, 1909. Abstract: Mg. Worid, vol. 31, pp. 547-548, 1909.

Wallace, J. P.

1. A study of ore deposits for the practical miner. New York, Hill Publishing Company, 1908.

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Walsh, Thomas F.

1. A commencement address, Colorado School of Mines.

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Reference to early discoveries in Colorado, in the San Juan.

Walters, A.

1. The coal deposits of Boulder County. Am. Jour. Min., vol. 4, p. 242, 1868.

Water Supply and Irrigation Papers.

1. Operations at river stations, 1900. U. S. Geol. Surv., W. S. Papers 47-52, 1901.

Ward, E. S.

1. Relief map of the mining district of Leadville. Ward's Natural Science Establishment, Rochester, N. Y. (Taken from Mon. U. S. Geol. Surv., 12. See Em- mons, 9.)

Ward, Lester P.

1. Observations on the Cretaceous and Tertiary of Colorado

and Wyoming. U. S. Geol. Surv., 3rd Ann. Rept, pp. 26-29, 1883.

la. Synopsis of the flora of the Laramie group. U. S. Geol. Surv., 6th Ann. Rept., pp. 399-557, Illust., 1885. Ab- stracts: Am. Nat, vol. 21, pp. 1011-1012, 1887; Am. Geol., vol. 2, pp. 56-58, 1888; Science, vol. 10, pp. 150-151, 1887.

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Surv., 8th Ann. Rept., pt. 2, pp. 663-960, Illust., 1889. Contains notes on Colorado fossils, pp. 911-913.

3. Remarks on the age of the Laramie group. Geol. Soc,

Am., Bull., vol. 1, pp. 529-532, 1891; Am. Nat., vol.

24, pp. 564-568, 1890.

Discussion of paper by J. S. Newberry on "The Lara- mie group."

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Soc, Am., Bull., vol. 3, pp. 23-31, 1892. Abstracts: Science, vol. 18, pp. 287-288; Am. Assoc. Adv. Sci., Proc, vol. 40, pp. 286-288, 1891 ; Am. Jour. Sci., 3rd ser., vol. 43, p. 157, 1892.

308 Bibliography Of Colorado Geology

Ward, Lester P. — Continued.

5. The Cretaceous formation of the Black Hills as indi- cated by the fossil plants. U. 8. Geol. Surv., 19th Ann. Kept., pt. 2, pp. 521-946, Illust., 1899.

Table of Cretaceous fossil plants from Colorado, p. 712.

G. Status of the Mesozoic floras of the United States. U. S. Geol. Surv., 20th Ann. Kept, pt. 2, pp. 211-748, Illust.,

Reference to a Boulder cycad.

Ward, Robert D. C.

1. Notes on climatology. Am. Geog. Soc. Bull., vol.* 33, pp. 150-153, 19ai.

Discusses rainfall of Colorado.

Ward, W. S.

1. Clays, their commercial and artistic products. Colo. Sci. Soc., Proc, vol. 9, pp. 31-46, 1908.

Reference to, and analyses of, Golden fire clays.

Warder, Robert B.

1. The silicified stumps of Colorado. Am. Assoc. Adv. Sci., vol. 31, pp. 398-399, 1882.

Warman, P. C.

1. Bibliography and index of the publications of the United

States Geological Survey, with the laws governing their printing and distribution. (1879-1892.) U. S. Geol. Surv., Bull. 100, 495 pp., 1893.

2. Catalogue and index of the publications of the United

States Geological Survey, 1880-1901. U. S. Geol. Surv., Bull. 177, 858 pp., 1901.

3. Catalogue and index of the publications of the United

States Geological Survey, 1901-1903. U. S. Geol. Surv., Bull. 215, 234 pp., 1*903.

Warren, C. H.

1. Mineralogical notes. I. Native arsenic from Arizona. II. Anthophyllite with the fayalite from Bockport, Massachusetts. III. Cerussite and phosgenite from Colorado. Am. Jour. Sci., 4th ser., vol. 16, pp. 337- 344, 1903.

Bibliography Of Colorado Geology 309

Warren, E. B.

1. Vein walls. E. and M. J., vol. 63, p. 424, 1897.

Describes vein structure near Crested Butte.

2. Some mineral veins of Gunnison County. E. and M. J.,

vol. 63, pp. 597-598, 1897.

Discusses occurrence of silver-lead ore bodies near Crested Butte.

Warren, G. K., and Humphreys, A. A.

1. Route near the thirty-eighth and thii-ty-ninth parallels of north latitude. See Humphreys, A. A., and Warren, G. K.

Warwick, A. W.

la. The Leadville district. Mg. Mag., vol. 11, pp. 430-439,

Illust, 1905.

Includes notes on the geology of the district.

lb. The Newhouse tunnel. Mg. Rept., vol. 45, pp. 398-402,

Illust., 1902.

1. Some western metallurgical problems. Mg. World, vol.

32, pp. 1167-1170, 1910.

2. Some of the mathematical laws of crushing. Mg. World,

vol. 33, pp. 173-175, 1910.

Describes ores from Cripple Creek and Leadville.

3. The Cripple Creek Tunnel. Mg. World, vol. 33, pp. 985-

987, Illust, 1910.

4. Colorado. Mg. World, vol. 34, pp. 153-156, 1911.

5. The Colbum mill and the Clancy process. Mg. Sci., vol.

64, pp. 440-442, Illust., 1911; Mg. and Eng. World, vol. 36, p. 741, 1912. Wascott.

1. The Little Mattie group. Clear Creek County. Mg. Rept., vol. 45, pp. 420-421, Illust., 1002.

Washbnme, Chester W.

1. Development in the Boulder oil field. U. S. Geol. Surv.,

Bull. 381, pp. 514-516, 1909.

2. The Florence oil field. U. S. Geol. Surv., Bull. 381, pp.

517-555, Illust, 1909.

3. Some observations on Rocky Mountain faults. Ab-

stract: Science, new ser., vol. 29, pp. 555-556, 1909.

4. The South Park coal field. IT. S. Geol. Surv., Bull. 381,

pp. 307-316, map, 1910.

5. The Canon City coal field. U. S. Geol. Surv., Bull. 381,

pp. 341-378, map, 1910.

310 Hiblkkjraphy' Of Colorado Geology

Washington, H. S.

1. Chemical analyses of Igneous rocks published from 1884

to 1900, with a critical discussion of the character

and use of analyses. U. S. Geol. Surv., Prof. Paper

14, 459 pp., 1903.

Discusses character of chemical analyses of igneous rocks, the construction and nomenclature of the new quantitative system, and methods of calculation em- ployed, and gives tables embracing nearly all published analyses of igneous rocks, arranged according to the new system.

2. The Superior analyses of igneous rocks from Roth's

Tabellen, 1869 to 1884, arranged according to the quantitative system of classification. U. S. Geol. Surv., Prof. Paper 28, 68 pp., 1904.

Watson, G.

1. New county, railroad and distance map of Wyoming, Utah and Colorado. 13 x 16 inches, colored. New York, G. Watson, 1875.

Watson, Joseph.

1. The Puritan mine. Mines and Minerals, vol. 32, pp. 140- 141, Illust., 1911.

Weed, W. H.

la. The Fort Union formation. Am. Geol., vol. 18, pp. 201- 211, 1896.

1. Enrichment of mineral veins by later metallic sulphides.

Geol. Soc. Am., Bull., vol. 11, pp. 179-206, 1900. Re- views: Am. Jour. Sci., 4th ser., vol. 10, pp. 82-83;

Jour. Geol., vol. 8, pp. 775-776, 1900.

Describes the chemical changes in the course of the deposition of secondary sulphide ores and the mode of their occurrence. Reference to Leadville ore deposits.

2. Influence of country rock on mineral veins. A. I. M. E.,

Trans., vol. 31, pp. 634-653, Illust, 1902. Discusses origin of certain ore deposits.

3. Secondary enrichment of Cripple Creek ores. E. and M.

J., vol. 75, pp. 553-554, Illust., 1903.

4. The copper mines of the United States in 1905. U. S.

Geol. Surv., Bull. 285, pp. 93-124, Illust., 1906; Ab- stract: Mg. and Sci. Press, vol. 93, pp. 484-485, 1906. Gives list of counties with production for 1904-1905.

Bibliography Of Colorado Geology 311

Weeks, P. B.

1. Bibliography and index of North American geolog}%

paleontology, petrology and mineralogy for 1892-1893. U. S. Geol. Siirv., Bull. 130, 210 pp., 1896.

2. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the year

1894. U. S. Geol. Surv., Bull. 135, 141 pp., 1896.

3. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the year

1895. U. S. Geol. Surv., Bull. 146, 130 pp., 1896.

4. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the year

1896. U. S. Geol. Surv., Bull. 149, 152 pp., 1897.

5. Bibliography and index of North American geology',

paleontology, petrology and mineralogy for the year

1897. U. S. Geol. Surv., Bull. 156, 130 pp., 1898.

6. Bibliography of North American geology, paleontology

and petrology and mineralogy for the year 1898. U. S. Geol. Surv., Bull. 162, 163 pp., 1899.

7. Bibliography of North American geology, paleontology,

petrology and mineralogy for the year 1899. U. S. Geol. Surv., Bull. 172, 141 pp., 1900.

8. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the years 1892-1900. U. S. Geol. Surv\, Bulls. 188-189, 717 pp.,

9. North American geologic formation names, bibliography,

synonomy, and distribution. T. S. Geol. Surv., Bull. 191, 448 pp., 1902.

10. Bibliography and index of the North American paleon-

tology, petrology and mineralogy for the year 1901. U. S. Geol. Surv., Bull. 203, 144 pp., 1901.

11. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the year

1902. U. S. Geol. Surv... Bull. 221, 200 pp., 1903.

12. Bibliography and index of North American geology,

paleontology, i)etrology and mineralogy for the year

1903. U. S. Geol. Surv., Bull. 240, 243 pp., 1904.

13. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the year

1904. U. S. Geol. Surv., Bull. 271, 218 pp., 1905.

312 Bibliography Of Colorado Gkology

Weeks, P. B. — Continued.

14. Bibliography and index of North American geology,

paleontology, petrology and mineralogy for the years 1901-1905. U. S. Geol. Surv., Bull. 301, 770 pp., 1906.

15. Stratigraphy and structure of the Uinta Range. Geol.

Soc. Am., Bull., vol. 18, pp. 427-448, 1907-8.

Weeks, F. B., and Nickles, J. M.

1. Bibliograi>liy of North American geology for the years 1906-7 with subject index. U. S. Geol. Surv., Bull. 372, 317 pp., 1909.

Weeks, P. D., and Laws, E. H.

1. Sinter-roasting with Dwight-Lloyd machines at Salida. Met. and Chem. Eng., p. 87, Feb., 1912.

Weeks, J. D.

1. The coke industry in Colorado. 10th Census of the U. S.

vol. 10, 1883.

Report on the manufacture of coke. Contains several analyses of Colorado coals.

2. Oil in Colorado. 11th Census of the U. S., Report on

mineral industries, pp. 482-487, 1892.

Describes tlie Florence oil field and gives statistics of production.

3. Manufacture of coke. U. S. Geol. Surv., 16th Ann. Rept.,

pt. 4, pp. 247-251, 1895.

Coking coal from Trinidad or Elmdro fields, Crested Butte and Durango.

4. Petroleum. U. S. Geol. Surv., 16th Ann. Rept, pt. 4,

p. 367, 1895.

Production chiefly from Florence.

5. Manganese. U. S. Geol. Surv., 16th Ann. Rept., pt. 3,

pp. 389-457, 1895.

Includes production of manganiferous ores in Colo- rado; iron and silver ores from LeadvUle.

6. Natural gas in 1894. IT. S. Geol. Surv., 16th Ann. Rept..

pt. 4, pp. 405-429, 1895.

Gas from Florence oil wells.

Weiser, R.

1. Permanent ice in a mine in the Rocky Mountains. Am.

Jour. Sci., 3rd ser., vol. 8, pp. 477-478, 1874.

Describes occurrence of ice in tlie Stevens mine on Mount McClellan, near Georgetown.

Bibliography Of Colorado Geology 313

Weller, Stuart.

1. The Huerfano lake basiii of soiithem ('olorado, and its

Wind River and Bridger fauna, by H. F. Osborne. Jour. Geol., vol. 6, pp. 328-329, 1898. (Review of article 21, in Am. Mus. Nat. Hist., Bull., vol. 9, pp. 247-258.)

2. A bibliography of North American Carboniferous inver

tebrates. U. S. Geol. Surv., Bull. 153, 653 pp., 1898.

3. Correlation of the Middle and Upper Devonian and the

Mississippian faunas of North America. Jour. Geol., vol. 17, pp. 257-285, 1909.

Welles, A. M.

1. Origin of gold in the drains of the divide. Mg. Rept., vol. 38, p. 15, 1898.

Welles, A. M., and Lakes, Arthur.

1. Peculiar mines and ore deposits of the Rosita and Silver Cliff mining district. Mines and Minerals, vol. 23, pp. 487-489, Illust., 1903.

Wells, J. S. C.

1. A review of progress in the cyanide process during the year 1901. Min. Ind., vol. 10, pp. 337-365, 1903.

West, H. T.

1. Differenf strata passed through in boring for an artesian well by H. T. West, on section 12, township 5 north, range 66 west, being in the county of Weld, in the territory of Colorado, bore 3 inches in diameter. Hay- den Surv., 8th Ann. Rept., pp. 38-39, 1876.

This is an appendix to Ch. 2, of Hayden's report.

West, W.

1. On the value of Colorado coals in metallurgy. Mg. Rev., vol. 5, no. 2, pp. 12-13, Illust., 1874; vol. 5, no. 5, p. 53, 1875.

Westgate, L. O.

1. The Twin Lakes glaciated area. Jour. Geol., vol. 13, pp.

285-312, Illust, 1905.

Describes the pre-glacial topography of the upper Ar- kansas Valley, the various glacial features of the Twin Lakes ' region, the glacial erosion, and the post-glacial changes, and discusses mountain form and its origin.

314 BIBLlOiRAPUY OK COLOIIADO GEOrX)Y

Weston, W.

1. The San Juau silver mines. K. and M. J., vol. 25, pp. 150-

151, 1878.

2. The Yankee Girl ore belt. E. and M. J., vol. 52, p. 162,

3. Red Mountain silver mines, Ouray County. E. and M. J.,

vol. 51, p. 348, 1891.

4. Gilsonite and elaterite, Routt County. Mg. Investor, vol.

34, pp. 72-74, 1904.

5. Routt County coal fields. Mg. Investor, vol. 34, pp. 119-

120, 1904.

6. Yampa coal fields of Colorado. Mg. Mag., vol. 10, p. 325,

7. Conditions in the Yampa coal field. Mg. and JUng.

World, vol. 35, pp. 1225-1226, Illust, 1911.

8. Tenderfoot gold discoveries. E. and M. J., vol. 94, p.

124, 1912.

9. The white marble quarries of Colorado. (Colorado Yule

Marble Company.) Mg. and Eng. World, vol. 36, p. 761, 1912.

Wennsch, A. P.

1. The Leadville sulphide ore deposits. Mg. Ind., vol. 1,

pp. 7-8, July 15, 1887.

2. History of development of Leadville ore deposits, some

of its geological features. Mg. Ind., vol. 1, p. 9, July 29, 1887.

3. Leadville comments. Mg. Ind., vol. 1, p. 8, Aug. 12, 1887.

4. The leaching and redeposition of silver. Mg. Ind., vol.

1, Aug. 26, 1887.

Leadville ore deposits described.

5. The cause of ove chutes. Min. Ind. and Tradesman, vol.

12, p. 225, 1893.

Lieadville and Red Cliff ore deposits described.

6. The Leadville of today. Eng. Mag., vol. 5, pp. 567-584,

Illust, 1893.

Wheeler, Geo. M.

1. Annual report upon the geographical explorations and survevs west of the one hundredth meridian in Cali- fomia, Nevada, Nebraska, Utah, Arizona, Colorado, New Mexico, Wyoming and Montana. Wheeler Surv.,

Bibliography Ov Colorado Geology 315

Wheeler, Geo. M. — Continued.

Ann. Rept., Appendix LL, pp. 3-37, Illust., maps,

Discusses plan of work, gives notes on various locali- ties in Colorado, and a preliminary sketch map of trian- gulation in eastern and southern Colorado.

2. Annual report upon the geographical sun'eys west of

the one hundredth meridian in California, Nevada,

Utah, Colorado, AVyoming, New Mexico, Arizona and

Montana. AVhoeler Surv., Ann. Rept., Appendix! JJ,

pp. 1-79, maps, 1876.

Contains table of geographic positions, process map of the survey, notes on the resources of central Colorado and mine notes of the Hardscrabblc or Rosita district.

3-4. Annual report of Lieut. Geo. M. AVheeler, Corps of En- gineers, for the fiscal year ending June 30, 1878. Wheeler Surv., Ann. Rept., Appendix NN, pp. 1-103,

map, 1878.

Deals mainly with territory not in Colorado, but con- tains a number of Colorado points in tables of geographic positions and altitudes.

5. Annual report of Capt, Geo. M. AA'heeler, Corps of En-

gineers, U. S. A. for the fiscal year ending June 30, 1879. AVh(ieler Surv., Ann. Rept., Api)endix 00, jp.

1-209, maps, 1879.

Includes table of triangulation stations in Colorado, with geographic positions and altitudes, and mine notes on the Las Animas district. But a very small part of the report refers to Colorado.

6. Geographical report. Wheeler Surv., Rept., Mon. 1,

780 pp., Illust, maps. 1889.

Colorado forms but a small part of the area covered by the report. Introduction contains notes on geography and topography of Colorado. The southern part of Colo- rado is described on pp. 76-89.

Wheeler, H. A.

1. The fire clays of Missouri. A. I. M. E., Trans., vol. 35,

pp. 720-734, 1905.

Colorado reference, p. 723. Colorado holds fifth place in production of fire clay.

Wheeler, W. M.

1. The expedition to Colorado for fossil insects. Am. Mus.

Jour., vol. 6, no. 4, pp. 199-203, Illust., 1906.

Gives notes on the character and occurrence of the fossils at Florissant and the deposits in which they occur.

316 Bibliography Op Colorado Obology

Wheeler, W. M. — Continued.

2. Expedition to Florissant for fossil insects. Abstract: N. Y. Acad. Sci., Annals, vol. 18, pt. 2, p. 292, 1908.

Whipple, C. W.

1. Executive report of Lieut. C. W. Whipple, Third Artil- lery, on the operations of Party no. 1, first divisions and subparties, field season of 1874. Wheeler Surv.,

Ann. Kept., Appendix LL, pp. 44-46, 1875.

Describes work of topographic party in southern and southwestern Colorado.

Whitaker, Milton C.

1. An olivinite dike of the Magnolia district, and associated

picrotitanite. Colo. Sci. Soc, Proc, vol. 6, pp. 104-

119, 1902.

Describes the occurrence, the megascopic and micro- scopic characters, and composition of olivine, and the characters and composition of the associated picroti- tanite.

White, A. H., and Barker, Perry.

1. Coals available for the manufacture of illuminntiug gas.

U. kS. Bureau of Mines, Bull. 6, p. 32-84, 1911.

Gives tests of coal from Oak Creek (Yampa fiel.d)> and from Sopris.

White, C. A.

la. Report upon the invertebrate fossils collected in por- tions of Nevada, Utah, Colorado, New Mexico, and Arizona, by parties of the expeditions of 1871, 1872, 1873 and 1874. Wheeler Surv., Mon. 4, pt. 1, Paleon- tology, pp. 3-219, Illust., 1877.

1. Paleontological papers, no. 3. Catalogue of invertebrate

fossils hitherto published from the fresh and brackish water deposits of the western portion of North Amer- ica. Hayden Surv., Bull., vol. 3, no. 3, pp. 607-614,

2. Paleontological papers, no. 4. Comparison of the North

American Mesozoic and Cenozoic Unionidae and asso- ciated mollusks with living species. Hayden Surv., Bull., vol. 3, no. 3, pp. 613-624, 1877.

3. Paleontological papers, no. 5, Remarks on the paleon-

tological characteristics of the Cenozoic and Mesozoic groups as develoi)ed in the Green River district. Hay- den Surv., Bull., vol. 3, no. 3, pp. 625-629, 1877.

Bibliography Of Colorado Geology 317

White, C. A.— Continued.

4. Report on the geology of a portion of northwestern Colo-

rado. Hayden Surv., 10th Ann. Rept., pp. 1-60, 1878. Abstracts: Am. Jour. Sci., 3rd ser., vol. 13, pp. 72-74,

1877 ; Am. Nat., vol. 11, pp. 84-86, 1877.

Surface features: mountains, drainage, parks and ba- sins. Classification, description, and discussion of the groups of strata: Silurian, Carboniferous, Triasslc, Ju- rassic, Cretaceous, post-Cretaceous, Tertiary, eruptive rocks. Displacements: uplifts and upthrusts, flexures. Surface geology: relation of valleys to geological struc- ture and displacement of strata, scattered drift. Material resources.

5. Paleontological papers, no. 6. Descriptions of new species

of invertebrate fossils from the Laramie group. Hay- den Surv., Bull., vol. 4, no. 3, pp. 707-719, 1878.

Includes Colsella, Nuculana, Anosonta, Unio, Corblcula, Acella, Physa, Helix, Neritina, Groniobasis, Vlviparus, Odontobasis. Specimens described were collected in Col- orado, Wyoming and Utah.

6. Paleontological papers, no. 7. On the distribution of

molluscan species in tlie Iaramie group. Hayden

Surv., Bull., vol. 4, no. 3, pp. 721-724, 1878.

The author uses Laramie to include Judith River and Fort Union series of the Upper Missouri, the Llgnitic series east of the " Rocky Mountains in Colorado, the Bitter Creek series of southern Wyoming and adjacent parts of Colorado, the "Bear River EJstuary Beds," and the Coal series of the valley of the Bear River and adja- cent parts of Utah.

6b. Report on the paleontological field work for the season of 1877. Hayden Surv., 11th Ann. Rept., pp. 159-272,

Account of expedition with description of geology and lists of fossils from Crow Creek, Valley of Cache la Poudre from five to twelve miles west of Greeley, Fossil Ridge, Valley of Little Thompson Creek, Mouth of St. Vrain River, Fox Hills group east 6t Rocky Mountains; Bijou Creek Laramie fossils; Cretaceous fossils from Golden and Morrison, North Park, Sage Creek, Yampa Valley near Canon Park, Danforth Hills, White River, with description of species.

Ck*. Contributions to Invertebrate paleontology no. 1. Cre

taceous fossils of the western States and Territories.

Hayden 8urv., 11th Ann. Rept., pp. 273-319, Illust.,

318 Bibliography Op Colorado Gboloot

White, C. A.— Continued.

7. Paleontological papers, no. 8. Remarks upon the Laramie

group. Hayden Surv., Bull., vol. 4, no. 4, pp. 865-876,

Discusses geographic extent, stratigraphic equivalents, and limits, conditions of sedimentation, extent, and in- habitants of Laramie sea.

8. Invertebrate paleontology of the Plateau province, to-

gether with notice of a few species from localities beyond its limits in Colorado. Powell Surv., Geol.

of the Uinta Mountains, ch. 3, pp. 74-135, 1876.

Lower Silurian, Upper Silurian and Devonian, Car- boniferous, Mesozoic, Cenozoic. Description of new spe- cies from Carboniferous, Jurassic, Cretaceous and Ter- tiary.

9. Paleontological papers, no. 10. Conditions of preserva-

tion of invertebrate fossils. Hayden Surv., Bull. vol.

5, no. 1, pp. 133-141, 1880.

Includes notes on conditions of preservation of fossils in the Mesozoic and Cenozoic rocks of the western terri- tories.

10. Paleontological papers, no. 11. Remarks upon certain

Carboniferous fossils from Colorado, Arizona, Idaho,

Utah and Wyoming, and certain Cretaceous corals

from Colorado, together with descriptions of new

forms. Hayden Surv., Bull., vol. 5, no. 2, pp. 209-221,

1879. Abstract: Am. Jour. Sei., 3rd ser., vol. 18, p.

409, 1879.

Contains descriptions of species of Actinozoa, Echin- odermata, Polyzoa, Brachiopoda, Pelesypoda, Gasteropoda.

11. Description of new invertebrate fossils from the Mesozoic

and Cenozoic rocks of Arkansas, Wyoming, Colorado and Utah. U. S. Nat. Mus., Proc, vol. 3, pp. 157-165,

12. Descriptions of new invertebrate fossils from the Mesozoic

and Cenozoic rocks of Arkansas, Wyoming, Colorado

and Utah. Smith. Inst., Misc. Coll., vol. 22, pp. 157-

162, 1881.

Contains description of Lucina profunda from Monu- ment Creek.

13. On certain Cretaceous fossils from Arkansas and Colo-

rado. U. S. Nat. Mus., Proc, vol. 4, pp. 136-139, 1882. Contains description of new species from near Jules- burg.

BIBLIOGRAPHY OF COLORADO QEofx)GY 319

C. A. — Continued.

14. Late observations (*oneeruing the niolluscan fauna, and

the geographical extent of the Laramie group. Am.

Jour. Sci., 3rd ser., vol. 25, pp. 207-209, 1883.

Takes issue with all who claim that true marine fos- sils have been found in the Laramie group.

15. Report of C. A. White. Hayden Surv., 12th Ann. Rept,

pt. 1, pp. 1-171, Illust., 1883.

Contributions to invertebrate paleontology; Cretaceous fossils of western states and territories; Tertiary mol- luscs from Colorado, Utah, and Wyoming; fossils of the Laramie group; Trlassic fossils of southeastern Idaho; Carboniferous fossils of western states and territories; Jurassic fossils from western territories; Carboniferous fossils from interior states.

16. A review of tlie non-marine fossil Mollusca of North

America. U. S. Geol. Surv., 3rd Ann. Rept., pp. 403-

550, Illust., 1883.

Describes Devonian, Carboniferous, Jurassic, Trlassic, Cretaceous and Tertiary fossils, many of which were found in Colorado and adjoining territories.

17. New molhisoan fonns from the Laramie and Green River

groups, with discussion of some associated forms

heretofore known. U. R. Nat. Mus., Proc., vol. 5, pp.

94-99, Illust., 1883.

Contains descriptions of new species from northeastern Colorado.

18. A Review of the fossil Ostreidae of North America ; and

comparison of the fossil with living forms; with ap- pendices by Angelo Heilprin and John A. Ryder. U. S. Geol. Surv., 4th Ann. Rept., pp. 273-430, Illust.,

Describes Carboniferous, Jurassic, Cretaceous, Laramie, and Tertiary fossils, most of which were found In Colo- rado.

19. Notes on the Jurassic strata of North America. Am.

Jour. Sci., 3rd ser., vol. 29, pp. 228-232, 1885.

20. On the fresh-water invertebrates of the North American

Jurassic. U. S. Geol. Surv., Bull. 29, 41 pp., Illust.,

Description and citation of species of fresh water In- vertebrate fossils, Mollusca, and Crustacea found In the Jurassic strata of Colorado and Wyoming. Canon City principal area In Colorado.

320 Bibliography Of Colorado Geology

White, C. A. — Continued.

21. On the interrelation of contemporaneous fossil faunas

and floras. Am. Jour. Sci., 3rd ser., vol. 33, pp. 364-

374, 1887.

Discussion of Cretaceous and Tertiary types.

22. The invertebrate fossils collected in portions of Nevada,

Utah, Colorado, New Mexico, and Arizona, by parties

of the expeditions of 1871, 1872, 1873 and 1874.

Wheeler Surv., Kept., vol. 4, Paleontology, part 1,

pp. 3-219, Illust., 1887.

General observations upon the collections and periods they represent; classification; fossils of the Primordial, Canadian, Trenton, sub-Carboniferous, Carboniferous, Jurassic, Cretaceous, and Tertiary periods.

23. Remarks on the Jura-Trias of western North America.

Am. Jour. Sci., 3rd ser., vol. 17, pp. 214-218, 1879.

24. Mountain upthriists. Am. Nat., vol. 22, pp. 399-408, 1888.

25. On the relation of the Laramie molluscan fauna to that

of the succeeding fresh water Eocene and other

groups. U. S. Geol. Surv., Bull. 34, 54 pp., Illust.,

1886 (vol, 5, pp. 391-442). Abstracts: Am. Jour. Sci.,

3rd ser., vol. 35, pp. 432-438, 1888; Science, vol. 10,

pn. 126-127, 1888; Pop. Sci. Monthly, vol. 33, p.

4fl0, 1888.

The author believes that at least the upper strata of the Laramie represent a gradual transition to the Ter- tiary, but for convenience concludes to class the Laramie as Cretaceous.

26a. The North American Mesozoic. Am. Assoc. Adv. Sci., Troc, vol. 38, pp. 205-225,- 1889.

26b. On the geology' and physiography of a portion of north- western Colorado and adjacent points in Utah and Wyoming. U. S. Geol. Surv., 9th Ann. Kept., pp. 677-712, Illust., 1889. Abstract: Am. Geol., vol. 7,

pp. 57-58, 1891.

Describes the stratigraphy, geology, and physiography.

27. Correlation papers. Cretaceous. A review of the Cre- taceous formations of North America. U. S. Geol.

Surv., Bull. 82, 273 pp., Illust., 1891.

Under "Southern interior region'* includes part of Kan- sas, Nebraska, Wyoming, Utah, Arizona, New Mexico, northwestern Texas and all of Colorado. Correlation of sections by Newberry, Meek, Hayden, Powell, White, and King.

Bibliography Op Colorado Geology 321

White, C. A., Marvine, A. R., Endlich, F. M., and Peale, A. C.

1. Map of northwestern Colorado. See Marvine, A. R., Endlich, F. M., Peale, A. C, and White, C. A.

White, C. A., and NicholBon, H. A.

1. Bibliography of North American invertebrate paleon-

tology. Hayden Surv., Misc. Pub., no. 10, 132 pp.,

2. Supplement to the bibliography of North American in-

vertebrate paleontology'. Ilaydon Surv., Bull. vol. 5, no. 1, pp. 143-152, 1880.

White, E. L.

1. Report of the State Bureau of Mines, Colorado, for the

year 1903-1904. Production by counties 1897-1904 of precious metals. Abstract : K. and M. J., vol. 79, p. 572, 1905.

2. Report of the State Bureau of Mines, Colorado, for the

years 1905-1906. Production of precious metals, 1897- 1906, by counties. Articles on oi-e handling by Wor- cester, and a study of uranium and vanadium in southern Colorado by Fleck and Haldane. Maps. Abstract : E. and M. J., vol. 83, p. 627, 1907.

Whiteside, P. W.

1. Haulage system at Gray Creek mine. Mines and Minerals,

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(U)

322 Bibliography Of Colorado Geology

Wickham, H. P.

1. New fossil Elateridae from Florissant. Am. Jour. Sci.,

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Wicks, H. S.

1. Leadville. E. and M. J., vol. 31, pp. 315, 470, 1881.

Widmar, R. J. A.

1. Hydraulic and quail mines of Summit County operating near Breckeuridge. Pacific Coast Miner, vol. 7, pp. 225-226, 1903.

Widmar, R. J. A., and Dill, R. G.

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1. Recent progress in the Wetherhill system of magnetic separation. Min. Ind., vol. 10, pp. 775-783, 1901.

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1. Tests of the Corliss engine at the Saratoga mine. Central City. Some pumping data. Colo. Sci. Soc, Proc, vol. 7, pp. 23-40, 1901. Mg. Rept., vol. 43, pp. 405-406, cont., 1901.

Williams, A., Jr.

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Summary of production of bismuth, cement, clay, coal, cobalt, coke, copper, gypsum. Iron ores, lead, mica, min- eral waters, petroleum.

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Williams, C. P.

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Williams, H. S.

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Williams, H. T.

1. Tourists map of Colorado, San Juan "mines and routes of travel to the health and pleasure resorts of the Rocky Mountains. 25x35 inches. H. T. Williams, New York, 1877.

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y

324 Bibliography Of Colorado Obologt

Williamson-Haffner Company — Continued.

4. Map of Denver and surroundings. Scale 1 mile to 3

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Williston, S. W.

1. American Jurassic dinosaurs. Kans. Acad. Sci., Trans.,

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A criticism of Professor Marsh's description of fossils found in Colorado, and description of newly discovered Wyoming fossils.

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1. Means of communication between Denver and the San

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Bibliography Of Colorado Geology 325

Wilson, A. D. — Continued.

3. Report of A. D. Wilson, topographer of the southeastern

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Primary triangulation ; measurements of the Denver base; San Luis base; method of adjusting the triangula- tion stations and important points with elevations, lati- tudes and longitudes. Methods of topographical field and offiice work; determinations of altitudes, and methods used. Office work of the topographer.

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Wilson, H. M.

1. American irrigation engineering. U. S. Geol. Surv., 13th

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Wilson, H. M., Benshawe, J. H., Douglas, E. M., and Goode, B. U.

1. Triangulation and spirit leveling, 1898. U. S. Qeol. Surv.,

20th Ann. Rept, pt. 1, pp. 211-530, 1899.

Includes San Juan, Dolores and La Plata counties.

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S. Geol. Surv., 21st Ann. Rept, pt. 1, pp. 205-582,

Triangulation stations in Weld, Elbert, Arapahoe, Douglas, Boulder, and JefTerson counties. Meridian marks in Weld and Jefferson counties.

3. Triangulation and primary traverse, fiscal year 1900-1901.

U. S. Geol. Surv., Bull. 185, 219 pp., 1901.

Colorado reference pp. 125-134. Altitudes in Weld, Arapahoe, Boulder, San Juan and La Plata counties.

326 Bibliography Of Colorado Geology

Wilson, H. M., Eenshawe, J. H., Douglas, E. M., and Goode, R. U. —

Continued.

4. Results of primary triangulation and primary traverse,

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164 pp., Illust., 1902.

Stations at Anita, Azimuth, Hahn, High Sharp, White Head in Routt County; mile post 145, Colorado-Wyoming line, and mile post 163.

Wilson, James S.

1. Report of the commissioner of the general land oflSce for

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Discusses geography, topography, water supply, cli- mate, soils, products of farms and mines.

Winslow, Arthur.

1. Geology and mining industry of the Cripple Creek dis-

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Review of report of Cross and Penrose in 14th Ann. Rept., U. S. Geol. Surv.

2. The Liberty Bell gold mine, Telluride. A. I. M. E., Trans.,

vol. 29, pp. 285-307, Illust., 1900.

Describes the occurrence of the ores and the mining methods.

Wislizenus, A.

1. Memoir of a tour to northern Mexico connected with Donizshan's expedition in 1846 and 1847. 141 pp., maps, 1848. Abstract: Am. Jour. Sci., 2nd ser., vol. 6, pp. 376-386, 1848.

Witter, P. M.

1. Observations on the geology of Steamboat Springs. Iowa Acad. Sci., Proc, vol. 6, pp. 93-98, 1899.

Wittle, W.

1. Rico still progressing, zinc separation a success. Pacific Coast Miner, vol. 7, p. 218, 1903.

Wolcott, E. R.

1. Radioactivity and some radioactive minerals and springs of Colorado. Colo. Sch. of Mines, Biennial Rept., pp. 25-36, 1904.

Wolcott, G. E.

1. The chlorination practice in the Cripple Creek region. Mg. Rept, vol. 50, pp. 137-138, Illust., 1904.

Bibliography Of Colorado Geology 327

Wolcott, G. E.— Continued.

2. The cyanide practice in the Cripple Creek district. Mg.

Kept., vol. 50, p. 215, 1904.

3. The Bampling of ore as practiced in the Cripple Creek

district.- Mg. Kept., vol. 50, p. 241, 1904.

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78, pp. 911-912, 1904.

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52, pp. 210-211, 1905.

6. Present milling conditions in the Cripple Creek district.

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Wood, B. D.

1. Gaging stations maintained by the United States Geo- logical Survey, 1888-1910 and survey publications relating to water resources. U. S. Geol. Surv., W. S. Paper 280, 102 pp., 1912.

Wood, John R.

1. Rare metals in Boulder County. Mg. Sci., vol. 62, p. 11,

2. New vanadium fields. (Boulder County) Mg. Sci., vol.

65, pp. 74-75, 1912.

Woodhull, A. A.

1. On the elephant in Colorado. Am. Jour. Sci., 3rd ser.,

vol. 3, p. 374, 1872.

Notice of discovery of teeth near Arkansas River.

Woodruff, E. G.

1. The coal resources of the Gunnison Valley, Mesa and Delta counties. U. S. Geol. Surv., Bull. 471, pp. 516-534, map, 1912.

Woods, B. D., and Hoyt, J. C.

1. Index to the hydrographic progress reports of the United States Geological Survey, 1888-1903. See Hoyt, J. C, and Woods, B. D.

Woods, Thomas H., and Doveton, G. D.

1. Milling at Camp Bird mine. Mg. and Sci. Press, vol. 86, p. 282, 1903.

Woodward, E. C.

1. Cupel absorption with telluride ores. (Cripple Creek ores) W. Chem. and Met, vol. 1, pp. 120-122, 1905.

328 BIBLIOGtlAPHY OF COLORADO GEOLOGY

Woodward, E. C, and Bailar, J. C.

1. Cupel losses in assaying telluride ores. See Bailer, J. C, and Woodward, E. O.

Woolsey, L. H.

1. Volcanic ash near Durango. U. S. Geol. Surv., Bull. 285,

pp. 476-479, 1906. Abstract: Mg. Kept., vol. 54, p. 252, 1906.

2. Lake Fork extention of the Silvertou mining area. U. S.

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Describes the general geology, the occurrence of the gold and silver ores, and the mining developments.

Worcester, P. G., Henderson, Junius, and Grout, P. P.

1. Reconnaissance of the geology of the Rabbit Ears region, Routt, Grand and Jackson counties. See Grout, F. P., Worcester, P, G., and Henderson, Junius.

Worcester, S. A.

1. An underground skip-hoisting plant. E. and M. J., vol.

79, pp. 415-416, Illust., 1905.

Arrangement for hoisting underground at Camp Bird.

2. Ore handling practiced at Colorado mines. Colo. State

Bureau of Mines, Rept., 1905-1906. All prominent districts discussed.

3. Ore washing at Cripple Creek. Mg. and Sci. Press, vol.

98, pp. 291-292, 1909.

Wortman, J. L.

1. The extinct Lanielidae of North America, and some asso ciated forms. Am. Mus. Nat. Hist., Bull., vol. 9, pp. 59-110, Illust., 1898.

Wortman, J. L., and Matthew, W. D.

1. The ancestors of certain members of the Panidae, the Viverridae, and Proeyonidae. Am. Mus. Nat. Hist., Bull., vol. 12, pp. 109-130, Illust, 1899.

Wortman, J. L., and Osborne, H. P.

1. Fossil mammals of the lower Miocene White River beds

collected in 1892.

2. Perissodactyls of the lower Miocene of White River beds.

See Osborne, H. F., and Wortman, J. L.

Bibliography Of Colorado Geology 329

Wulsten, Carl.

1. Geology of Rosita camp. Ores aud Metals, vol. 6, no.

258, p. 13, 1897.

2. The Sangre de Cristo Range. Mg. Rept., vol. 39, p. 16,

March 2, Illust., 1899.

Description of topography and mines of the district.

3. The Sierra Blanca. Mg. Rept., vol. 39, pp. 12-13, March

30, 1899.

Physiography described.

4. The Grayback gold field. Mg. Rept., vol. 41, pp. 364-365,

Wurte, Henry.

1. On the grahamite of West Virginia and the new Colo- rado resinoid. Am. Assoc. Adv. Sci., Proc, vol. 18, pp. 124-135, 1869.

Wynkoop, W. C.

1. Gold production in Colorado. Eng. Mag., vol. 9, pp. 97-100, 1895.

W , C. H.

1. Geology of the Aspen district, by Spurr. Am. Jour. Sci.,

4th ser., vol. 8, pp. 465-406, 1899. A brief review of U. S. Geol. Surv., Mon. 31.

2. Notes on the tellurides from Colorado, by Charles.Palache.

Am. Geol., vol. 27, p. 181, 1901.

Review of article in Am. Jour. Sci., vol. 160, pp. 419-

3. Carnotite and associated vanadiferous minerals in west-

em Colorado, by W. F. Hillebrand and F. L. Ransome.

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Review of article In Am. Jour. Sci., vol. 160, pp. 120-

W , J. L.

1. Fossil mammals of the Tertiary of northeastern Colo- rado, by W. D. Matthew. Am. Jour. Sci., 4th ser.,

vol. 13, pp. 476-477, 1902.

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W. p. H.

1. Notes of an engineer in Colorado. Eng. News, vol. 140,

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330 Bibliography Op Colorado Geology

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1. San Juan silver and gold mines. E. and M. J., vol. 25, pp. 310, 411, 1878; vol. 26, pp. 115, 382, 404, 1879; vol. 27, pp. 239, 261, 1879; vol. 32, pp. 200, 389, 1882.

W. W.

1. San Juan silver mines. E. and M. J., vol. 31, pp. 22, 40, 92, 1881.

Youmans, E. L., and William J.

1. The ancient ruins of Colorado. Pop. Sci. Monthly, vol.

12, pp. 120121, 1877.

Quotes Professor Hayden's description of ruins in southwestern Colorado.

2. Geology of the Far West. Pop. Sci. Monthly, vol. 16,

pp. 568-569, 1880.

Includes description of a part of Colorado taken from a summary in Nature of a lecture by Professor A. Geikle.

Youmans, William J.

1. The Colorado oil field. Pop. Sci. Monthly, vol. 34, p.

142, 1888.

Brief description of the Florence oil field, taken from Professor Newberry's description in the American Asso- ciation for the Advancement of Science Proceedings.

Zalinski, Edward R.

1. Occurrence of vanadium near Telhiride. E. and M. J., vol. 85, pp. 1152-1153, Ilhist., 1908.

Zirkel, Ferdinand.

1. Microscopic petrography. King. Surv., vol. 6, 297 pp.,

must., 1876.

The rocks described are largely from Nevada, but the work contains descriptions of the following varieties collected in Colorado: metamorphic rocks, granite, felslte porphyry, trachyte, rhyolite and basalt.

Zittel, Karl A. von.

1. Text-book of paleontology. American edition, vol. 1, pp.

682-691, 1900.

Figures some Florissant species to illustrate genera.

2. Handbuch der Paleontologie. I. Abth., Paleozoologie.

III. Band, Vertebra ta (Pisces, Amphibia, Reptilia, Aves). 990 pp., Illust, Munich and Tieipsic, 1887-

Bibliography Of Colorado Geology 331

Zittely Karl A. von — Continued.

3. Handbuch der Paleontologie. I. Abth., Paleozoologie. IV. Band, Vertebrata (Mammalia). 799 pp., Illust., Munich and TiCipsic, 18911893.

Zulch, W. G.

1. El Paso shaft, Cripple Creek. Mines and Minerals, vol. 32, p. 488, Illust., 1912.

Index

(Numbers refer to entries in the bibliography.)

Abajo Mountains: Holmes, 6. Abrasive material: Woolsey, 1. Adams County, coal : Campbell, M. R., 5.

map: Clason Map Co. Agate, Canon City: Sterrett, 2, 3, 4.

production, 1892: Day, 7. Agency Parle White, 4. Agullar, coal, analysis of: Lakes, 117. geology, dynamic: Lakes, 117. oil: Lakes, 117. physiography: Lakes, 117. Akron, paleontology: Lakes, 24.

fuller's earth: Min. Res. U. S. G.

S., 1912. placer gold: Lakes, 24. Alamosa, hydrography: Newell, 6. Albany quadrangle, map: U. S. G. S. Algonklan. See also pre-Cambrian. Btratigraphy. General: Emmons, 17; Henderson, 10; Lakes, 143; Van Hise, 1, 2; Van Hise and Lieth, 1. Boulder district: Fenneman, 5. Denver Basin : Emmons, Cross, and

Eldridge, 2. Eastern foothills: Henderson, 10. Engineer Mountain quadrangle :

Cross and Hole, 1. map: Van Hise, 1. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1. ore deposits in: Rickard, T. A., 28. Ouray quadrangle: Cross, Howe,

and Irving, 1. Pikes Peak district: Cross, 24. quartzites and schists, Rico Moun- tains: Cross and Spencer, 1. quartzite Ouray, Camp Bird mine :

Titcomb, 1. quartzite, Telluride: Cross and

Purington, 1. Rico area: Cross and Ransome,

1; Cross and Spencer, 2. San Joan Mountains: Howe, 1.

Algonklan. — Continued. Stratigraphy. — Continued. Silverton area: Cross, Howe, and

Ransome, 1. schists, Arkansas Valley : Emmons,

schists, Rico Mountains: Cross and Ransome, 1; Cross and Spencer, Telluride area: Cross and Puring- ton, 1. Paleontology, General: Van Hise, 1. Alkali lakes, San Luis Valley: Fleck,

1; Siebenthal, 4. Allen-Bond coal district: Emmons,

Cross, and Eldridge, 2. Alluvial deposits. See almost all geo- logical reports cited. Alma, London fault: Patton, 10. mines and mining: Patton, 10. ore deposits: Rickard, T. A., 28. placer deposits: Lakes, 21, 22, 46; Lund; Patton, 10. Aluminum mining: Van Wagenen, T., 2. Alunite,Sai\ Cristobal: Larsen, 1. Amalgam, La Plata Mountain: Free- land, 1. Amazonstone, Florissant: Sterrett, 2, 3. . Pikes Peak and Crystal Park: Hen- ahen, 1. production, 1907: Thorn, 2. Ames, Butterfly mine: Sayer, D. J. Amethyst.

General: Henahen, 1; Sterrett, 2. production, 1899: Day, 12, 1907: Thom, 2. Ammonia, production 1903-1905: Day, 16, 17, 18; 1906-1907; Thom, 1, 2; 1908: Parker, E. W., 3. Andrew glacier: Henderson, J., 15. Animas Canyon, paleontology: Hawn, 1. Animas Fork, gold deposits: Scholl and Herrick, 1.

Index

Animas Park, geology of: Hawn, 1. Animas River district, coal deposits: Lakes, 105. geology of: Lakes, 105. hydrology: Newell, 7, 12, 14. Laramie: Cross, 18. mines described : Lakes, 105. terraces of: Cross, Howe, and Ran- some, 1.

Animas Valiey: Cross and Howe, 1.

Antelope Park: Endlich,3,4; Rhoda,l,2.

Anticlinal structure: Apishapa quad- rangle: Stose, 1. Front Range, related to oil, gas and water: Lakes, 185.

Antero, Mount. See Mount Antero.

Antliracite Creek, coal from, analysis of: Eakins, L. G., 6. geology, laccolite, map : Cross, 23.

Anthracite quadrangle, map:U. S. G. S.

A ntliracite-C rested Butte, breccia de- scribed: Elmmons, Cross, and Eldridge, 1.

coal : Emmons, Cross, and Eldridge, 1; McNeil, 1.

coal, analysis of: Chisholm, 3.

diorite described: Emmons, Cross, and Eldridge, 1.

dynamic geology: Emmons, Cross, and Eldridge, 1.

map: Cross, 23, EmQions, Cross, and Eldridge, 1.

porphyrite: Emmons, Cross, and EHdridge, 1.

porphyritic diorite : E!mmons, Cross, and Eldridge, 1.

Anthracite Range, geology of: Cross,23.

Anvil lountain, zunyite and guiter- manite: Hillebrand, 3.

Apishapa quadrangle, geology : Stose,!. map: U. S. G. S.

Aquamarine: Henahen, 1. Arapahoe County, altitudes in: Wilson, A. D., 3.

Castle Rock district: Lee, W. T., 5.

map : Clason Map Co.

oil deposits: Ores and Metals, 5.

water supply : Hay, R., 2.

Arapahoe glacier: Fenneman, 1; Hen- derson, J., 2, 5, 6a, 15; Lee, W. T., 3.

Arapahoe Peak: Marvine, 1.

Archaeology:

General: Berthoud, 1, 2; Bessels,!; Hayden, 22; Jackson, 1; New- berry, 3; Youmans, £. L., and W. J., 1.

Aboriginal remains, near Denver: Cannon, 4.

Ancient art, northwestern Colo- rado : Barber, 2.

Ancient Pueblos, inscriptions, Colo- rado, Utah, New Mexico, Arizona: Barber, 3.

Ancient Pueblos, on the ruins of the Valley of the Rio San Juan: Barber, 5.

Ancient ruins of southwestern Colo- rado : Holmes, 3, 4 ; Jackson, 2, 3.

Antiquities of Jefferson and Clear Creek counties: Cannon,!.

Cave dwellers in America, age of: Elliot, E. T., 1.

Forestry: Cooper, J. G., 1.

Pottery of Colorado, Utah, Arizona, New Mexico: Barber, 1.

Prehistoric ruins in southern Colo- rado: Gannett, 8.

Southwestern Colorado : Jackson, 1.

Stone implements and ornaments from the ruins of Colorado, Utah and Arizona: Barber, 4. Archean. See also pre-Cambrian. Stratigraphic.

General: Emmons, 7; Henderson, J., 10; King, 1; Lakes, 6, 6, 10, 143; Marvine, 1; Newberry, 5; Peale, 7, 8; Stevenson, 7; Van Hise, 1, 2; Van Hise and Leith, 1; White, 26; Whitney. 1; Whit- ney and Wadsworth, 1.

Alma district: Patton, 10.

Anthracite-Crested Butte: Emmons, Cross, and Eldridge, 1.

Cambrian contact, Manitou: Crosby,

Colorado Range: Hague and Em- mons, 1; King, 1.

Index

Archean. — Continued. Biratigraphic, — Continued.

correlation of: King, 1.

Denver Basin: Eldridge, 2; Em- mons, Cross, and Eldridge, 2.

Florence: Eldridge, 5.

geology, Colorado Range : Emmons, 17; Hague and Emmons, 12.

gneiss and schists, Manitou: Fin- lay, G. I., 3.

gneisses and schists, Silverton: Cross and Howe, 1.

Golden: Bailey, Rath and Grider, 1. granites and schists, Pueblo: Gil- bert, 7.

Grayback area : Patton, 8.

Leadville: Emmons, 2.

map: King, 1; Van Hise, 1.

magnetite: Putnam, 1.

Medicine Bow Range: Hague and Emmons, 1; King, 1.

Mosquito Range: Emmons, 9.

ore deposits in: Rickard, T. A., 28.

Park Range: Hague and Emmons, 1 ; King, 1.

Palmer Lake: Cannon, 9.

Perry Park: Cannon, 7.

Potsdam contact: Hovey, 1.

quartzite. Red Mountain: Kedzie,l.

Rabbit Ears district : Grout, Worces- ter, and Henderson.

schist and granites, Pueblo: Gil- bert, 7.

schists and gneisses, Manitou: Finlay, G. I., 3.

schists and gneisses, Silverton: Cross and Howe, 1.

southeastern Colorado: Stevenson,

Ten Mile quadrangle : Emmons, 27.

Uinta Range: Hague and Emmons, 1 ; King, 1.

Walsenburg: Hills. R. C, 15.

Bpecica areas.

Anthracite-Crested Butte: Em- mons,. Cross, and EJldridge, 1.

Engineer Mountain quadrangle : Cross and Hole, 1.

Leadville area: Emmons, 9.

Archean. — Continued. Special areas. — Continued. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1. Ouray quadrangle: Cross, Howe,

and Irving, 1. Pikes Peak district: Cross, 24. Pueblo quadrangle: Gilbert, 7. Rico area : Cross and Ransome, 1 ;

Cross and Spencer, 2. San Juan Mountains: Howe, 1. Silverton area: Cross, Howe, and

Ransome, 1. Telluride area: Cross and Puring-

ton, 1. Tenmile area: Emmons, 27. Walsenburg area: Hills, 15. Paleontology. General: Van Hise, 1. Arsenic: Hess, 3.

Archuleta County, coal deposits: Lee, H. A., 9. geology and resources of: Lee, H.

oil, analysis of: Lee, H. A., 9.

oil wells: Caldron, 1; Lakes, 96,

99; Lee, H. A., 9; ores and

metals, 5. mines described: Lee, H. A., 9. physiography: Lee, H. A., 9. 'Argentine district, ores described:

Spurr, Garrey, and Ball, 1. tunnels of: Mg. Rept., 44. Arlansas Basin, hydrography: Newell,

4; Wilson, H. M., 2. Arkansas Park, Neocene: Dall and

Harris, 1. Arkansas River.

General: Beck with, 1; E!ndlich, 1. analysis of water from : Clarke, F.

W., 9. Cretaceous section on: Stanton, 2. hydrology: Barton, 9, 13; Freeman

and Bolster, 2; Gilbert, 5; Hin-

derlider and Hoyt, 1; Newell, 4,

6. 7, 12, 14, 16; Thompson, 2;

Wilson, H. M., 2.

Lake Fork reservoir: Hosea, 7. map: Thompson, 2. paleontology, fossils from: Wood- hull, 1.

Index

Arkansas Valiey.

General: Emmons, 20; Hayden, 14; Lesquereux,2; Peale,5,6; Schiel,

artesian water: Darton, 9, 10, 13; Gilbert, 5.

building stone from : Lakes, 94.

geology, dynamic : Emmons, 9; Dar- ton, 9, 13; Gilbert, 5; Westgate,

glaciation in: Hayden, 19; West- gate, 1.

lake basins by wind erosion: Gil- bert, 3.

map: Clason Map Co.; Darton, 13; Gilbert, 5; Howell, 2.

physiography: Adams, G. I., 3; Darton, 13; Gilbert, 5; Walcott, 6; Westgate, 1.

soils, crops: Thomas, C, 2.

soil survey : Lapham and party.

underground water: T , J E., 1.

water, analysis of: Gilbert, 5.

water resources. See Water re- sources.

wells, record of: Darton, 13.

wind erosion of lake basins: Gil- bert, 3.

Armejo quarry, sandstone, analysis x)f: Chatard, 1.

Arroyo quadrangle, map: U. S. G. S.

Arsenic: Hess, 3.

Artesian water.

General: Berthoud,5; Elliott, R. S., 1; Emmons, 7; Headden, 13; Lakes, 165, 215, 219.

analyses: Emmons, Cross, and Eldridge, 2; Darton, 9, 13; Gil- bert, 5.

Apishapa quadrangle: Stose, 1.

Arkansas Valley: Darton, 9, 10, 13; Gilbert, 5.

arid region: Hill, R. T., 2.

Denver district: Cannon, 10 ; Chau- venet, 2; Chisholm, 1; Cross, 3, 22; Emmons, Cross and Eldridge, 2; Hills, R. C, 18; Strong, 1; van Diest, 3, 11.

Artesian water. — Continued.

eastern Colorado: Darton, 9, 10, 13;

Emmons, Cross, and Eldridge, 2;

Gilbert, 5; Hay, R., 2. Elmoro quadrangle: Hills, R.C. 24. northeastern Colorado: Darton, 9;

Lakes, 112. northern Colorado: Darton, 9;

Henderson, J., 10. Pueblo quadrange: Gilbert, 7. San Luis Valley: Lakes, 224; Sie-

benthal, 4. Spanish Peaks: Hills, R. C, 25. Trinidad: Lakes, 3. Walsenburg: Hills, R. C, 16.

Ashcroft,Tam o'Shanter mill: McClave, J.M.

Aspen.

General: Carlisle, 1; Lakes, 10;

Spurr, 1, 3. barite : Kemp, 1. blue limestone, analysis of: Lakes,

carbonaceous rocks, analysis of:

Clarke and Hillebrand, 1. coal: Hills, R. C, 6. diorite porphyry : Spurr, 1. dolomite, dolomitlc quartzite, dolo-

mitized zone, analysis of rock:

Spurr, 1. geology: Brunton, 2; Emmons, 29;

Henrich, 2; K , C. R.. 1;

Jenney,l: Lakes, 2,103, 150, 196;

Newberry, 16; Spar, 1; Spurr, 1;

Van Hise, 4; W , C. H., 1.

glauconiticgrit: Spurr,!. granite: Spurr, 1.

lead deposits: Henrich, 2; New- berry, 16; Spurr, 1, 3. map: Spurr, 1 ; U. S. G. S. mills and milling practice: Armi-

tage, 1; Mg. Rept, 43; Sperry, 1. minerals: Kemp, 1; Penfleld and

Pearce, 1; Spurr, 1. mines described: Burchard, H. C,

1; Emmons, 15, 20; Henrich, 2;

K , C. R., 1; Lakes, 2, 6,

133 ; Lee, H. A., 1 ; Lee, W. T.. 1 ;

Newberry, 16; Spurr, 1; W ,

O. H., 1.

Index

Aspen. — Continued.

ore deposits: Bancroft, G. J., 8;

Irving, 4; Lakes, 21, 214, 233;

Matteson, W. G., 2, 3; Newberry,

16; Rlckard, T. A., 28; Siver, 1;

Spar, 1; Spurr, 1, 3; Spurr,

Garrey and Ball, 1. paleontology: Lakes, 2. Parting quartzite: Spurr, 1. pearceite from : Penfield, 8. physiography: Henrich,2; Spurr, 1. platinum and allied metals: Lind-

gren, 10. polybasite and tennantite, analysis

of: Penfield and Pearce, 1;

Spurr, 1. porphyry: Henrich, 2; Lakes, 2. quartz porphyry: Spurr, 1. Roaring Fork, early mining: Rick-

ard, T. A., 6. Russel process of ore treatment:

Morse, 1. silver deposits : Henrich, 2; Matte- son, 1, 2; Morse, 1; Newberry,

16; Spurr, 1, 3. slides, eftect of: Lakes, 253. Smuggler mine : Henahen, 1 ; Lakes,

52, 120. Smuggler Mountain: Lakes, 120. tennantite, analysis of: Penfield

and Pearce, 1; Spurr, 1. triangulation : Gannett, H., 12.

Aspen Mountain, ore deposits: Brun- ton, 2; Henrich, 2.

Asphaltum.

General: Emmons, 20; Emmons and Hayes, 1; Endlich, 5; Lakes, 211.

Book Cliffs: Lakes, 65.

Grand County: Lee, H. A., 2.

Middle Park: Eldridge, 5.

production 1892-1893: Rothwell, 1, 2—1896,1898, 1903, 1904: Day, 10, 11, 16, 17—1905: Ingalls, 5— 1907: Thorn, 2.

reservoir linings: Herin, R.

Utah Colorado: Stone, G.H., 2.

western Colorado: Lakes, 116.

Avesybirds of North America: Coues, 1. passerine bird : Allen, 2. wading bird from Amyzon shales: Cope, 56.

Axlai Basin: White, 4, 24.

Axtell Mountain, geology of: Cross, 23.

Azoic. See Archean.

Loew, 2 ; Whitney and Wadsworth,

Bakers Park.

General : Rhoda, 1, 2. map: Endlich, 2.

Banner placer: Richards, 9.

Barlte.

Apishapa quadrangle: Stose, 1. Logan County : Crane, 1. Nepesta quadrangle : Fisher, 1.

Basalt, road metal: Lakes, 165.

zones, a guide to ore deposits: Stevens, 2. Basin Plateau: Peale, 12. Batholith, Princeton batholith. Monarch-

Tomichi district: Crawford, 4. Battle Mountain, gold deposits, analysis of ore: Guiterman, P., 1. mining district: Mg. Rept, 12. ore shoots described: Skews, 3. Beacon Hill, ore shoots: Skews, 3. Bear Canyon, South Boulder, paleontol- ogy: Fenneman, 5; White, 6b. Bear Greek, copper, gray: Emmons, W. H., 2. geology, dynamic: Emmons, W. H., 2; Emmons, Cross, and Eldridge, gold tellurides : Emmons, W. H., 2. hydrology : Newell, 7, 12, 16. lamprophyre dike: Clarke, F. W., 8. meteorite:. Am. Jour. Sci., 2; Smith,

J. L., 12. ore deposits: Cross, Howe, and Ransome, 1; Irving, 1; Emmons, W. H.. 2; Rickard, 28. silver tellurides: Emmons, W. H., Bear River Mountains: Endlich, 7;

Holmes, 6. Beckwith Mountain, geology of: Cross,

Index

Beilevue, building stones from: Lakes,

Bent County, map: Clason Map Com- pany.

Berwind-Agullar coal mines: Hills, R. C, 25.

Beryl, Mount Antero: Henahen, 1; Sterrett, 2, 3. production, 1888-1892: Day, 4, 7— 1906-1907: Thom, 1, 2.

Beulah, building stone: Lakes, 94. marble: Lakes, 222.

Bibliography and Important reference lists: Alma district: Patton, 10.

Aspen district: Spurr, 1.

borings, deep: Darton, 10.

briquetting: Mills, J. E., 1.

Carboniferous formations and fauna: Girty, 1, 2.

cement materials and industry:

Eckel, 1. clays and ceramic arts : Branner, 1.

coal, coke, lignite, peat, U. S. G. S.

publications : Lee and Nickles, 1 ;

Randall, 1, 2. coal : Merriam, 1.

coal, steaming tests : Breckenridge,

Cretaceous formations, vertebrata

of: Cope, 22.

Cripple Creek district, publications on: Llndgren and Ransome, 3.

Denver Basin, publications: Can- non, 10.

Devonian: Cross, 33; Girty, 1; Spencer, 2.

economic products: Emmons and Eckel, 1, 2 ; Emmons and Hayes, 2, 3; Hayes and Lindgren, 1.

enargite: Spencer, L. J., 1. Florissant lake basin: Henderson,

J., 6. fuel testing: Belden, Delamater,

and Groves, 1; Burrows, 1; Ray

and Krei singer, 1. geologic formation names : Weeks,

F. B., 9.

Bibliography and Important reference 1 1 sts. — Continued.

geology, 1886: Darton, 1, 2—1887- 1889, 1890, 1891, 1732-1891: Dar- ton, 3, 4, 5, 6—1892-1893, 1894, 1895, 1896, 1897, 1898, 1899, 1892- 1900, 1901, 1902, 1903, 1904, 1901- 1905: Weeks, F. B., 1, 2, 3. 4, 5, 6, 7. 8, 9, 10, 11, 12, 13, 14—1906- 1907: Weeks and Nickles, 1 — 1908, 1909, 1910, 1911, 1912: Nickles, 1, 2, 3, 4, 5.

glaciation: Henderson, J., 16.

Gray back district: Patton, 8.

hydrology: Fellows, 1; Hoyt and Wood, 1; Wood, B. D., 1.

laccolitic mountains: Cross, 23.

Laramie: Hay, O. P., 3; Peale, 17.

maps : Marcou and Belknap, 1.

metallic products: Lindgren, 11.

minerals of Colorado: Cross, 6; Randall, J. S., 1.

mineralogy: Dana, E. S., 8, 9, 10 — 1887-1888: Dana, E. S., 6—1892, 1893, 1894, 1895, 1896, 1897, 1898, 1899, 1892-1900, 1901, 1902, 1903, 1904, 1901-1905: Weeks, F. B., 1. 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14—1906-1907: Weeks and Nick- les, 1—1908, 1909. 1910, 1911, 1912: Nickles, 1, 2, 3, 4, 6.

mining districts of Colorado: Hill and Lindgren, 1.

mining engineering literature: Crane, 2.

mining manual: Dunbar, 1.

Mount Wilson: Spaulding, 1.

nonmetallic products : Lindgren, 11. iSfee also U. S. G. S. Mineral Re- sources, and Mineral Industry, annual volumes.

northwestern Colorado: Hender- son, 13.

orographic movements in Rocky Mountains : ETmmons, 17.

paleontology, Brachlopoda: Schu- chert, 1.

paleontology, Bryozoa: Nickles and Bassler, 1.

Bibliography and Important reference I lata. — Ck)ntinued. paleontology. Carboniferous inver- tebrates: Girty, 2; Weller, 2.

paleontology, Cretaceous and Ter- tiary plants: Knowlton, 2.

paleontology, Paleozoic Crustacea, 1698-1899: Vogdes, 1.

paleontology, Insecta: Scudder, 31,

paleontology, invertebrates: Boyd, 1; Girty, 2; Marcou, J. B., 1; Stanton, 2; Weller, 2; White, C. A., and Nicholson, 1, 2.

paleontology, Vertebrata: Hay, O. P., 1.

paleontology, 1886: Marcou, J. B., 2—1887-1888 ; Williams, H. S., 1— 1888-1892: Keyes, 2—1892, 1893, ' 1894, 1895, 1896, 1897, 1898, 1899, 1892-1900, 1901, 1902, 1903, 1904, 1901-1905: Weeks, F. B., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14— 1906-1907 : Weeks and Nickles, 1 —1908, 1909, 1910, 1911, 1912: Nickles, 1, 2, 3, 4, 5.

petrology, 1887-1888: Merrill, 1.— 1892-3, 1894, 1895, 1896, 1897, 1898, 1899, 1892-1900, 1901, 1902, 1903, 1904, 1901-1905 : Weeks, F. B., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 —1906-1907 : Weeks and Nickles, 1—1908, 1909. 1910, 1911, 1912: Nickles, 1, 2, 3, 4, 5.

photographs, list of: Darton, 8.

Pikes Peak region : Cross, 24.

plants, fossil, Denver Basin: Em- mons, Cross, Eldridge, 2.

platinum: Howe, J. L., 1.

post-Laramie beds : Cross, 19.

Red Beds, San Juan: Cross and Howe, 1.

Rico Mountains: Cross and Ran- some, 1; Cross and Spencer, 1; Ransome, 2.

San Juan Red Beds: Cross and Howe, 1.

sedimentary rocks: Walcott, 4.

Silverton district: Ransome, 3.

Bibliography and important reference lists. — Continued.

stratigraphy, western Colorado: Cross, 35.

Tertiary, Florissant lake basin: Henderson, J., 6.

tin deposits: Collier, A. J., 1.

Underground water: Fuller, 1; Fuller, Clapp, and Johnson, 1.

U. S. Geological Survey publica- tions; Hayden, King, Powell and Wheeler surveys: Schmeckebier,

U. S. Geological Survey publica- tions: Lindgren, 11; Warman, 1, 2, 3 ; Walcott, 12.

U. S. National Museum publica- tions : Gear, 1.

water resources: Wood, B. D., 1. Big Springs, map: U. S. G. S. Big Thompson, hydrography: Newell, 7, 12, 16, 17, 18; Lamb and party.

pre-Cambrian geology: van Hise, 1. Big Thompson Canyon, sandstone, an- alysis of: Hague and Emmons, 1. Bijou Creek, fossils from described:

White, 6b. Bismuth.

General: Frenzel, A. B., 1.

associated with ore deposits and arsenic : Ingalls, 8 ; Rickard, F., 1.

Chaftee County : Ingalls, 8 ; Hess, 3.

Fremont County: Ingalls, 8.

Gilpin County: Ingalls, 8 ; Rickard, F., 1.

Granite: Ingalls, 8.

Leadville: Hess, 3; Ingalls, 8; War- wick, la.

Montezuma: Ingalls, 8.

production 1883-1884 : Williams, A., 1—1885 : Day, 1—1893, 1897, 1899 : Rothwell, 2, 6, 7—1900: Hohes;

Day, 14; Day, 15; Day, 17 ;

Struthers, 1—1901 Struthers, 2—1902 Struthers, 3—1904 Judd, 1905: Day, 18; Ingalls, 4— 1906: Thom, 1—1910; Ingalls, 8; Sweetser, 1; Warwick 4 — 1911: Hess, 5; Parker, E. W., 7. San Juan: Mines and Mining, 4; Ingalls, 8.

Index

Black Hawk:

General; Endlich,!. enargite from: Spencer, L. J., 1. map : U. S. G. S. minerals from : Loew, 1. ore deposits: Rickard, T. A., 28. uranium, analysis of: Clarke, P. W.,

Blacks Gulch, oil from: Gale, 5.

Blue Mountains (Yampa plateau), min- erals from: Mg. World, 3.

Blue River and VlEilley: Bechler, 1. upper: Rlckard, T. A., 28.

Book Cliffs.

Oeneral: Peale, 12; Powell, 5.

asphaltum: Lakes, 65, 116, 211. coal field, analysis: Lakes, 130; Richardson, 1.

geology, dynamic: Lakes, 130.

Grand River valley, and map: Peale, 8.

oil, analysis: Lakes, 146, 182.

paleontology: Richardson, 1. physiography: Richardson, 1.

Boulder County.

Oeneral: Eilers, 3; Endlich, 1, 5; Fenneman, 6; Lakes, 10; - gren, 2; Marvine, 2; Silliman, 1.

Alum Hill, volcanic rocks: An- drews, 1.

andesite: Hogarty, 1.

Bald Mountain, dacite: Cross, 27. Bald Mountain, white granite:

Henry, 1. brick manufacture: Fenneman, 5. building stone: Langridge, 1; Lee,

Caribou mine described: Endlich,

1, 5; Emmons, S. F.,7; Mg. Rept.,

1, 7; Mg. and Sci. Press, 5; Rick-

ard, T. A., 28. Caribou milling: van Diest, 1. Caribou and other silver mines:

E. and M. J., 5. Caribou and No-name mines: van

Diest, 2. cement material: Martin, 1. clay: Fenneman, 5; Langridge, 1.

Boulder County — Continued.

coal: Am. Jour. Mg., 4; Bmmons, Cross, and EHdridge, 2; Fenne- man, 5; Grout, 1; Hayden, 2, 4; Headden, 8; Hodge, 1; Lang- ridge, 1 ; Walters, 1.

coal, analysis of: Headden, 8; Raymond, 1.

coloradoite, analysis of: Endlich, 6.

economic geology: Emmons, 7;

Fossett, 1. eruptive rocks: Palmer, 1. ferberite ores, analysis of: George,

fire clay, analysis of: Mg. Rept, 33. Flagstaft, quartz-porphyry: Palmer

and Fulton, fiuorspar: Burchard, E. F., 1. gas: Curtis, 1; Fenneman, 5; Hill,

B., 1; van Diest, 7. gas, analysis of: Curtis,!, geology of: Adams, G. L, 2; Bagg,

1; Breed, 1; Crawford, 1; Em- mons, Cross and Eldridge, 2; E.

and M. J., 35, 39; Parish, 1;

Fenneman, 2, 3, 5; George, 3;

Hayden. 6, 14; Hogarty, 1;

Lakes, 124, 150, 159; Lee, W. T.,

2; Lindgren, 6; Smith, J. A.. 1;

Spurr, Garrey and Ball, 1; S ,

E. W., 1; van Diest, 12; Whit-

aker, 1. gold: Curie, 1; Parish, 2; Jennings,

1; Lakes, 56, 131; Rlckard, T. A.,

Gold Hill: Marvine, 2; Mg. Sci., 9;

Rickard, T. A., 28. Grand View mine, sylvanite, anal- ysis of: Clarke, F. W., 9. granite of Bald Mountain, analysis :

Henry, 1. henry ite, analysis of: Endlich, 6. hydrology, Boulder Creek: Newell,

7, 12, 16; Lamb, Freeman and

Henshaw, 1. hydrology: Fenneman, 5; Lakes,

64; Lee, H. A., 9. iron deposits: Chauvenet, 3, 8;

Emmons, 21; Hodge, 1. Jamestown district: Lakes, 131.

Index

:ui

Boulder County. — Continued.

Jamestown district, Standard mine:

Mg. Rept, 8. Jamestown district, Wano mine, ore treatment: Davis, W. H., 1'.

Jamestown and Caribou ore depos- its: E. and M. J., 39.

John Jay mine: van Diest, 12.

Larimer County, and map: Martin,

lime: Fenneman, 5.

lionite from Magnolia district, an- alysis of: Endlich, 6.

Magnolia, lionite, analysis of: End- lich, 6.

Magnolia, olivinite dike: Whi taker,

map: Clason Map Co.; Drumm, 1; van Diest, 4.

marble: Merrill, 4.

melonite: Hillebrand, 2.

meridian marks: Walcott, 7.

mesas, origin of: Lee, W. T., 2.

mica: Schwarz, 4.

milling practice: Burger, 1; In- galls, 2.

minerals, Sugarloaf : Blake, J. C, 1.

minerals: Emmons, 7; Headden, 3; Lakes, 25; Loew, 1; Mg. Rev., 6; Palache, 1; Rickard, T. A., 16.

mines described, 18G9-1874: Ray- mond, 1, 4, 5, 7, 9, 10—1880-1883: Burchard, H. C, 1, 2, 3, 4—1900: Hodges, 1 — 1910: Henderson, C. W., 3, 4 — Lakes, 5, 25 ; Lindgren, 6; Mg. Investor, 1; Mg. Rept, 7; Rickard, T. A., 6; Sniktan, 1.

mining In 1867: Hollister, 1.

nonconformity: Eldridge, 2.

oil, analysis of: Kirkbride, 1; Lee, H. A., 9.

oil and clay districts: Langridge, 1.

oil fields, map: Fenneman, 2.

oil production: Day, 20.

olivinite dike: Whitaker, 1.

ore deposits, ore belt: Lindgren, 6.

ore deposits, origin of: Bagg, 1.

ore deposits, tellurides: Jennings, 1; Lakes, 26; Rickard, T. A., 16; SiUiman, 1.

Boulder County. — Continued.

ore deposits, telluride and sulphide : Lindgren, 6.

ore deposits, structure: van Diest,

ore deposits : Adams, G. I., 2 ; Day, 19, 22; E. and M. J., 35; Fenne- man, 2, 3, 5 ; Kirkbride, 1 ; Lakes, 21, 64, 124, 137, 143, 173, 233, 240, 243 ; Langridge, 1 ; Lee, H. A., 9 ; Mg. Investor, 1; Mg. Rev., 6; Ores and Metals, 5; Pearce, R., 15; Spurr, Garrey, and Ball, 1; Teal, 1; Washburne, 1.

overturns: Henderson, J., 1.

paleontology, cycad from: Ward, L. F., 6.

paleontology, Pierre fossils; Stan- ton, 1.

paleontology: Henderson, 3.

physiography: Emmons, Cross, and Eldridge, 2; Fenneman, 5; Lakes,

quartz porphyry of Flagstaff hill: Palmer and Fulton, 1.

rare minerals: Wood, 1.

rocks, analysis of: Clarke, F.W., 7.

rocks: Lakes, 64.

roscoelite, analysis of: E!ndlich, 6. silver: E. and M. J., 5; Jennings, 1. Sugarloaf district, andesite: Ho-

garty, 1. Sugarloaf district, map : Crawford,

Sunset, trachyte: Breed, 1. sylvanite: Clarke. F. W., 1, 9;

Rickard, T. A., 16. trachyte from: Breed, 1. tellurium. Magnolia, analysis of:

Endlich, 6. triangulation in: Gannett, S. S., 2. tungsten ore, analysis of: Ekeley,

1; George, 3. tungsten deposits: Fleck, 2;

George, 2, 3, 4; Greenawalt, 2, 3;

Hess, 1, 2, 3, 5; Lindgren, 6; Mg.

Rept, 38; Mk. World, 1; Ohly, 8;

Tovote, 2; Walker, 1; Wood, J.

R., 1.

Index

Boulder County. — Continued.

tungsten field, map: George, 3. tungsten milling: George, 3; Hills,

V. G., 2; Paddock, 1; Parmelee,

uranium: Ores and Metals, 7;

Wood, J. R., 1. Valmont dike, augite and dolerite:

Emmons, Cross and Eldridge, 2. Valmont dike, minerals, analysis:

Clarke, F. W., 6. vanadium : Wood, J. R., 1, 2. vein phenomena: Parish, 1; Rick-

ard, P., 2; van Diest, 6. Ward, Columbia vein: Palmer and

Stoddard, 1. Ward: Marvine, 2. water analysis: Headden, 4; Lee,

H. A., 9. Boulder district, map: Fenneman, 5. Boulder quadrangle, map: U. S. G. S. Brachlopoda, Cambrian: Schuchert, 1;

Walcott, 8, 14. Carboniferous: Schuchert,!. Cenozoicand recent: Schuchert, 1. Devonian: Schuchert, 1. Mesozoic: Schuchert,!. Ordovician : Schuchert, !. Paleozoic: Clark, J. M., 2. Permian: Schuchert,!. Silurian: Schuchert,!. Breckenridge. 8ee also Summit County. Parncomb Hill: Lakes, 232, 245. geology: Lakes, 66, !95; Ransome,

gold deposits: Lakes, 66; Mg. Ind.,

7; Mg. Ind. and Tradesman, 5. gold crystals: Lakes, 2!8, 232; Mg.

Sci., 5. mines described: Emmons, !2;

Neill, ! ; Ransome, 5 ; Widmar, !. Mount Baldy mine, a: Lakes, 246. ore deposits: Bancroft, G. J., 6;

Emmons, !2; Lakes, 66, 83, !95,

248; Pearce, !5; Rickard. T. A.,

placers: Bradford and Curtis, !; Brown, T. A., !; Crow, !; Janin, C, !; Lakes, !2!, !43, !9!, !95, !97,!99,206, 256, 257, 259; Lakes, A., jr.. !; Mg. Rept., 2, 4; Of, 1.

Breckenridge. — Continued.

Wellington mine: Henahen, 1;

Lakes, 234. zinc-lead ores, concentration of:

Lawrence, D. H., !.

Breckenridge quadrangle, map: U. S. G. S.

Brick, production, !888: Day 4. See annual volumes on Mineral Re- sources, U. S. Geol. Surv.

Brick clay.

Oeneral:. Lakes, !65; Ries, 1. Apishapa quadrangle: Stose, G. W.,

Boulder district: Fenneman, 6. Denver Basin: Emmons, Cross and

Eldridge, 2. Golden: Hague, J. D., 1.

Brick and tile, production: 1902-1905; Day, 15, 16, 17, 18—1906-1907: Thom, 1, 2—1908: Middleton, 1,2.

Briquets, from Colorado coal: Mills, J. E., 1.

Browns Park: Davis, W. M., 4; Powell, !, 2, 3, 4; White, 26.

Bruins Peak, mica slate: Zirkel, F., 1.

Brule clay: Darton, 9; Osbom, 4. Brush Creek, minerals from, analysis

of: Clarke, F. W., 6. Bryozoa, bibliography, and catalogue. Paleozoic: Nickles and Bassler, Chazy : Nickles and Bassler, 1. Cincinnati : Nickles and Bassler, 1. Devonian: Nickles and Bassler, 1. Mesozoic: Nickles and Bassler, 1. Mississippian: Nickles and Bass- ler, 1. Paleozoic, bibliography and cata- logue: Nickles and Bassler, 1. Silurian: Nickles and Bassler, 1. Buckhorn mine described: Lakes, 102. Buena Vista, bauxite from: Ohly, 7. Buffalo Peaks, andesite, analysis of: Cross, 1. geology of: Emmons, 5. minerals from, analysis of: Clarke, F. W., 6 ; Clarke and Hillebrand,

Index

Building materiai. See also cement, granite, limestone, marble, sand- stone.

Buiiding stone.

General: Bailar, 3; Chauvenet, 1 Emmons, S. F., 7; Fenneman, 5 Foster, E. L., 1; Foster, Wm., 1 George, 5; Harris, C. H., 1 Hawes, G. W., 1; Henahen, 1 Lakes, 5, 51, 94; 203, 219, 235; Lee, H. A., 1; Smith, J. A.

Apishapa quadrangle: Stose, G. W.,

Boulder county: Fenneman, 5; Langridge, 1; Lee, H. A., 9.

Denver Basin : Emmons, Cross, and Eldridge, 2.

Elk Mountains: Emmons, Cross, and Eldridge, 1.

exhibit at World's Columbian Ex- position : Day, 8.

Georgetown: Spurr, Garry, and Ball, 1.

granite: Ikes, 165.

Gunnison: Lakes, 20.

Larimer County : Lee, H. A., 9.

limestone, Niobrara: Lakes, 165.

northern Colorado: Henderson, 10.

ornamental stones, and : Merrill, 2.

production 1885,1886, 1901: Day, 1, 2, 12, 14—1891: Trowbridge, 1— 1894: Roth well, 3—1905: Ores and Metals, 9—1908: Coons, 1— 1910: Burchard, E. F., 6; Dalzell, 4; Warwick, 4—1911: Burchard, E. F., 8; Parker. E. W., 7; Tonge, 14 — Denver Basin : Emmona, Cross and Eldridge, 2 — by coun- ties: Mg. Ind., 6; Tonge, 12.

Rico quadrangle: Cross and Ran- some, 1.

rhyolite tuff: Lakes, 165.

sandstone: Lakes, 165.

sedimentary: Lakes, 95.

Silverton: Cross and Howe, 1.

Steamboat Springs : Fleck and Hal- dane, 1.

Burrouglis Park, ore deposits: Rickard,

Cache ia Poudre, antiquities: Berthoud, E. L., 2.

hydrology: Emmons, Cross and Eldridge, 2; Newell, 7, 12.

paleontology: Henderson, J., 8; White, 6b.

soils: Means, T. H.

tJpper South Platte valleys, and, map: Clason Map Co.

water analysis: Headden, 4. Cadmium: Crawford, 4; Frenzel, A. B.,

1; Siebenthal, 3, 6. Caicite, Saguache County: Rogers, A.

F., 1. Caiciferous: Endlich, 5. Calhan, clay: Richardson, 3. Caiumet, epidote and quartz from:

Smith, W. N., 2. Cambrian. Stratigraphy.

General: Darton, 9, 13; King, 1; Lakes, 10, 143; Schiel, 1; Wal- cott, 1, 2.

Alma district: Patton, 10.

Aspen, white quartzite: Henrich, 2.

Aspen: Newberry, 16; Spurr, 1.

Castle Rock: Lee, W. T., 5.

Deadman Creek: Lee, W. T., 5.

gold in: Austin, W. L., 3.

map showing: Willis, 2.

Monarch-Tomichi district: Craw- ford, 4.

North America: Walcott, 1.

ore in: Lakes, 135; Rickard, T. A.,

Paleozoic, and: Willis, 1.

Pike's Peak: Cross, 24.

quartzite: Henrich, 2; Lakes, 171.

sandstones, Manitou: Finlay, G. I.,

Sangre de Cristo: van Dlest, E. C. and P. H., 1.

Tomichi-Monarch district: Craw- ford, 4. Paleontology.

General: Girty, 2.

Alma district: Patton, 10.

Brachiopoda: Cross, 33; Cross, Howe, Irving, and Emmons, 1; Darton, 13; Schuchert, 1; Wal- cott, 8, 14, 15.

Index

Cambrian. — Continued. Paleon tology. — Continued. Canadian period: White, 22. correlation papers : Walcott, 2. Engineer Mountain: Cross, 41. Ignacio: Cross, 33; Cross, Howe

and Ransome, 1; Cross, Howe

and Irving, 1. Pikes Peak: Cross, 24. Potsdam: Peale, 7; Walcott, 2.

Camp Bird. See Ouray.

Canadian Canyon, Morrison of: Lee,

W. T., 6. Canfieid-Erie, coal deposits: Emmons,

Cross and Eldridge, 2. Canon City.

General: Williams, S. G., 1.

agates: Sterrett, 3, 4.

building stone: Merrill, 2.

coal: Clark, R. N., 1; Darton, 9; Drown, 1; Hawn, 1; Hills, R. C, 22; Lakes, 6, 69, 154; Lesque- reux, 2; Potter, W. B., 1; Ray- mond, 7; Stevenson, 9, 11; Storrs, 1; Washburnc, 5; White- side, 4.

coal, analysis of: Clark, R. N., 1; Drown, 1 ; Raymond, 7.

coal fields, map: Washburne, 6.

coke: Eilers, 4.

concretions from : Lakes, 39.

corundum near : Finlay, 2 ; Pratt, 1.

garnet: Sterrett, 7.

geology, economic and general: Endlich, 1; Hayden, 6.

geology, stratigraphic : Hayden, 19 ; Stanton, 3.

gypsum near: Lakes, 141.

hydrology: Endlich, 1; Newell, 6.

iron, analysis of: Drown, 1.

mica near: Sterrett, 1.

minerals from, described: Loew, 1.

soda spring: Wilson, Jas. S., 1.

mineral springs: Hayden, 6; JLoew, 1; Lee, H. A., 9.

natramblygonite from : Schaller, W. T., 13.

Ordovician exposures: Darton, 14.

oil deposits: Williams, S. G., 1; Hayden, 12.

Canon City. — Continued.

paleontology, dinosaurian : Cope, 7 ; Hatcher, 1; Holland, W. J., 1.

paleontology, fish remains: Am. Geol., 1; Clarke, J. M., 1; Vail- lant, 1.

paleontology. Paleozoic fossils: Walcott, 3.

paleontology, Silurian fossils from: Emmons, 16; Walcott, 5.

paleontology, fossils from: Cope, 31, 32, 64; Darton, 14; Gilmore, 1; Hay, O. P., 5; Hayden, 13; Marsh, 8, 20 ; White, 20.

physiography: Darton, 13; Wal- cott, 3.

post-Laramie: Cross, 18.

precious stones from : Henahen, 1 ; Sterrett, 2.

sandstone quarries described: Fos- ter, E. L., 1.

tantalum near: Hess, 1, 3.

water analysis: Lee, H. A., 9.

zinc-lead pigment smleter: Barber, P., 1; Mg. Rept., 9.

zinc-lead, treatment of ores: De- Cou, 1.

zinc plant: Barker, 1; Mines and Mining, 5.

Canon City quadrangie, map: U. S. G. S.

Canon Park: White, 4.

Capers, fire clay from: Bailar, 3.

Capitai City, Hanna mill: Richards and

Locke, 1. Carboniferous. Stratigraphic. Oeneral: Endlich, 1, 3, 4, 6; Girty, 2, 4; Hayden, 6, 14, 19, 22; Hitch- cock, 1; Holllster, 1; Holmes, 2; Lakes, 5, 10, 143; Marvine, 1; Newberry, 3; Peale, 5, 7; Steven- son, 3, 7 ; White. 26. Alma district: Patton, 10. Aspen, quartzite; Newberry, 16. Aspen : Henrich, 2. Castle Rock: Lee, W. T., 5. chalcedony: Lakes, 171. coal measures: Emmons, 9; Hills,

R. C, 6. Creede: MacMechen, 1.

Index

Carboniferous. — Continued. Stratigraphic. — Continued.

Devonian, and, correlation: Wil- liams, H. S., 2.

eastern slope: Hayden, 24.

Elk Range: Holmes, 1.

Fremont County: Williams, S.G., 1.

iron ore: Snedaker, 2.

Leadville: Emmons, 2, 21.

limestone, Ouray, Camp Bird: Tit- comb, 1.

limestone, magnetite in: Putnam,

lower, chalcedony: Lakes, 171.

lower, Leadville: Emmons, 21.

lower, northwestern Colorado : White, 4.

lower. Red Mountains: Kedzie, 1.

lower, Rico: Rickard, T. A., 7.

lower: Peale, 8.

middle, northwestern Colorado : White, 4.

middle: Endlich, 5.

non-conformity: Emmons, 8.

northwestern Colorado: White, 4.

ore in: Lakes, 135; Rickard, T. A.,

Perry Park: Lee, W. T., 5.

Pitkin County: Lee, H. A., 9.

Red Beds: Henderson, J., 11.

Red Mountains: Kedzie, 1.

Rico: Parish, 3; Rickard. T. A., 7.

Sangre de Cristo: Lee, W. T., 8.

San Juan: Comstock, 7.

San Juan County: Comstock, 1, 7; Read, 4.

southwestern Colorado: Cross and Howe, 1.

Spanish Peaks: Stevenson, 8. upper. Elk Range : Holmes, 1. upper, northwestern Colorado*

White, 4. upper: Endlich, 5; Peale, 8, 12. western Colorado: Cross, 35. Paleontology.

General: Cross, 35; Cross and Howe, 1; Darton, 9; Emmons, 9; Endlich, 5; Girty, 2, 3, 4, 5; Hay- den, 14, 19; Henderson, 10, 11; Jackson, R. T., 1; King, 1; Lee, W. T., 5, 8; Meek, 1; Peale, 5, 7,

Carbonlferout. — Continued. Paleontology. — Continued.

8; Stevenson, 3; White, 8, 10, 15,

16, 18, 22; Williams, H. S., 3. Arkansas Valley: Darton, 18. Badito: Hills, R. C, 15. Brachiopoda: Schuchert, 1. Castle Rock: Lee, W. T., 5. coal measures : Emmons, 9 ; Hague

and Emmons; Lakes, 6. Crested Butte: Lesquereux, 18. Cripple Creek district: Lindgren

and Ransome, 3. Echinoidea: Jackson, R. T. ,1. Engineer Mountain district: Cross,

Fountain : Butters, 2 ; Finlay, O. I.,

Garfield', Monarch-Tomichi district:

Crawford, 4. Gleneyrie, Manitou district: Fin- lay, G. I., 3. Grayback : Patton, 8. Greenhorn limestone: Gilbert, 5, 7;

Hills, R. C, 15, 24; Stose, 1. Ingleside, Front Range: Butters, 2. lower: Erndlich, 5; Hayden, 26. middle: Endlich, 5. Millsap: Cannon, 9; Cross, 24;

Finlay, G. I., 3; Girty, 2. Mississippian, Bryozoa: Nickles

and Bassler. Mississippian, invertebrates: Cross,

Howe, and Irving, 1. Mississippian: Cross, 41; Girty, 2;

Wcller, 3. Molas : Cross, Howe, and Ransome,

1; Cross, Howe, and Irving, 1. Needle Mountains: Cross, Howe,

Irving and Emmons, 1. Ouray: Cross, Howe and Irving, 1. Plants: Lesquereux, 18. Red Beds: Butters, 2; Cross and

Howe, 1; Henderson, J., 10, 11;

Peale, 7. Rico : Cross and Ransome, 1 ; Cross

and Spencer, 1.

Sangre de Cristo district: Hawn,

1; Lee, 8. San Juan district: Comstock, 7;

Newberry, 4; Stevens, R. P., 1.

Index

Carboniferous. — Continued. Paleontology. — Continued.

Silverton: Cross, Howe and Ran-

some, 1. upper, Arkansas Valley : Darton, 13. upper: Cross, Howe, and Irving, 1;

Endlich, 5. Weber grits: Emmons, 9. Weber shales: Emmons, 9.

Carboniferous-Devonian. Paleontology.

Blue limestone : Emmons, 9 ; Spurr,

correlation: Williams, H. S., 2.

Lead ville limestone : Emmons, Cross, and Eldridge, 1.

Ouray limestone: Cross, Howe, and Ransome, 1; Cross, Howe, and Irving, 1; Cross and Ran- some, 1; Crawford, 4; Girty, 1, 2; Hay, O. P., 2.

Parting quartzite: Emmons, 9; Girty, 2.

Carbon l\ountain, geology of: Cross, 23. Caribou. See Boulder County.

iron ores: Putnam, 1. Carlisle Springs, analysis of water:

Lee, H. A., 9. Carnotite.

General: Fleck and Haldane, 1, 2; Henahen, 1; Henning, 2; Mg. World, 2; Phillips, 1. Fall Creek: Fleck and Haldane, 2;

Hess, 3. Montrose County: Lee, H. A., 9. northwestern Colorado : Hender- son, J., 13. Paradox Valley: Curran, 1. radioactivity of: Mg. Sci., 8. Rio Blanco County: Gale, 2, 6. Routt County: Lindgren, 8. vanadiferous minerals associated with: Hillebrand and Ransome,

1; W , C. H., 3.

Carrizo area, eruptive rocks: Peale, 9. Carson, ore deposits: Larsen, 1. Castle Arcli, geology, dynamic: Lee,

W. T., 5. Castle conglomerate: Lee, 5; (Richard- son, 4).

Castle Creek, fault on: Lakes, 2.

rhyolite building stone: Foster, Wm., 1; Merrill, 2.

Castle Rock conglomerate: (Lee, 5);

Richardson, 4. Castle Rock, geology of: Lee, W. T., 5. gypsum deposits: Lee, W. T., 5. map: Lee, W. T., 5; U. S. G. S. physiography: Lee, W. T., 5. Catlin quadrangle, map: U. S. G. S. Caves.

Oeneral: LeCouppey de la Forest,

underground channels, and, Mon- arch-Garfield area : Crawford, 3,4. Cebolla Creek.

General: Peale, 8.

manganese and iron deposits, with

analysis: Lakes, 26. manganese and titanium: Chauve- net, 8. Cebolla Hot Springs, geology, dynamic:

Rickard, T. A., 23. Cedar Creek beds: Osborn, 4. Cedar, vanadium: Mg. World, 8. Cement.

General: Bailar, 3; Dalzell, 3;

Lakes, 204, 205, 219. limestone, Elmoro quadrangle:

Hills, R. C, 24. materials: Bancroft, 3; Eckel, 1;

Lakes, 165; Ohly, 2. materials, plains area: Darton, 9. Nepesta quadrangle: Fisher, 1. plant, Florence: Remmell, 1. production 1883-1885: Williams, A., 1—1885, 1889-1890, 1891: Day, 1, 5, 6—1892, 1894, 1895: Rothwell, 1, 3, 4—1895 Day, 9—1900: Day, 13— Ores and Metals, 3—1901: Day, 14—1902: Day, 15, Struth- ers, 3—1903-1905: Day, 16, 17, 18 —1905: Ores and Metals, 9 — 1906: Thorn, 1—1907: Ingalls, 6; Thom, 2—1908: Eckel, 3—1909: Burchard, E. F., 4—1910; Bur- chard, E. F., 6; Warwick, 4 — 1911, Burchard, E. F., 8; Hena- hen, 1 ; Parker, E. W., 7 ; Tonge,

rock, Walsenburg: Hills, R. C, 15.

Index

Cement Creek, fossil from described: Walcott, 8.

Cenozoic. Stratigraphic. Oeneral: Endlich, 5; King, 1;

Peale, 7; Powell, 3. northwestern Colorado: White, 24.

Paleontology. Oeneral: Endlich, 5; Miller, S. A., 1; Scudder, 33; WTiite, 2, 3.

bibliography: Scudder, 31.

Brachiopoda: Schuchert, 1.

Green River region: White, 3.

mammals: Osborn, 4.

Cenozoic geology, Fortieth Parallel area of Colorado.

Bear River: Hague and Emmons, 1; King, 1.

Browns Park : Hague and Emmons, 1; King, 1.

Chalk Bluffs: Hague and Emmons, 1; King, 1.

Colorado Range: Hague and Em- mons, 1; King, 1.

Eocene — Bridger group. Green River group, Uinta group, Ver- milion Creek group, paleontol- ogy: Hague and Emmons, 1; King, 1.

erosion and canyon cutting: King,

Escalante Hills: Hague and Em- mons, 1; King, 1.

glacial geology — canyons, drift, lakes: King, 1.

Godiva Ridge: King, 1.

Great Plains: King, 1.

lakes — Tertiary and Quaternary : King, 1.

Miocene — White River group, pale- ontology: Hague and Emmons, 1; King, 1.

North Park: Hague and Emmons, 1; King, 1.

Owi-yu-kuts Plateau : King, 1.

paleontology: Hague and Emmons, 1; King, 1.

Cenozoic geoiogy. — Continued.

Pliocene — Niobrara group. North Park group, Wyoming conglom- erate, paleontology: Hague and Emmons, 1; King, 1.

Quaternary — canyons, glaciers, lakes; King, 1.

Tertiary lakes: King, 1.

Uinta Mountains: Hague and Em- mons, 1; King, 1. Vermilion Bluffs: King, 1.

Central City.

General: Endlich,!; Hayden, 6, 12; Mg. Rept., 15.

geology, economic: Hague, 1; Wheeler, G. M., 2.

enargite: Spencer, L. J., 1.

granite: Underbill, 4.

map: Endlich, 1; U. S. G. S.

minerals described: Lioew, 1.

mines and mills: Rogers, A. N., 1.

ore deposits: Rickard, T. A., 28.

pitchblende and tellurium: Hill, N. P., 1.

Topeka gold mine: Lakes, 71. uraninite: Pearce, R., 10. uranium: Frenzel, A. B., 1.

Chadron formation: Darton, 9; Osborn,

Chaffee County, beryl: Sterrett, 2. bismutite: Genth, 2; Ingalls, 8. building stone: Merrill, 2, 4. Calumet iron mine: Snedaker, 2. cinnabar: E. and M. J., 15. copper: Crawford, 3; Mg. Rept,

40; Lindgren, 8; Struthers, 3. corundum: Pratt, 1. Cree Camp, ore deposits and mines:

Crawford, 4. cyrtolite: Genth, 1. garnet: Smith, W. B., 2. gems: Henahen, 1; Smith, W. B.,

2; Sterrett, 2. geolog>', dynamic: Crawford, 3. geology, economic: Crawford, 3;

Emmons, 7. glaciation : Crawford, 4. graphite: Ihne,l.

Index

Chaffee County. — Continued.

granite : Crawford, 3, 4 ; Hoenes, 1 ; Mg. Scl., 3.

iron ore, analysis of: Chauvenet, 5, 8; Crawford, 3.

iron deposits : Rolker, 1 ; Snedaker,

latite and latite porphyry: Craw- ford, 3.

lead : Crawford, 3.

limestone: Burchard, E. F., 8; Crawford, 3, 4; E. and M. J., 15.

manganese: Crawford, 3.

marble: Crawford, 3, 4,

mines described: Lee, H. A., 9. Monarch-Garfield area, geology,

mines, minerals, ore deposits,

paleontology: Crawford, 3, 4;

Mg. Sci., 3. Monarch-Tomichi: Crawford, 4. Mount Antero. See Mount Antero. onyx marble: Crawford, 4. ore deposits: E. and M. J., 15. phenacite: Penfleld, 1. placer mining: Crawford, 4; Mg.

Rept., 2. platinum and allied metals: Lind-

gren, 10. porphyries: Crawford, 3, 4. precious stones: Henahen, 1;

Smith, W. B., 2; Sterrett, 2. production of mines: Burchard, H.

C, 1, 2, 3, 4; Henderson, C. W.,

3; Hodges, 1; Lee, H. A., 9; Mg.

Kept., 18. quartzite : Crawford, 4. sapphire and garnets: Smith, W.

B., 2. sliver, Monarch-Garfield area:

Crawford, 3. silver: E. and M. J., 15. Taylor Gulch, ore deposits and

mines: Crawford, 4. tungsten: Hess, 3. Winfield, mines described: Mg.

Rept, 20. water, analysis of: Lee, H. A., 9. zinc: Crawford, 3.

Chalk, Smoky Hill: Conrad, 1.

Chalk Bluffs, formation described:

Collier, D. C, 1. Neocene: Dall and Harris, 1. paleontology, fossil described:

Scott, W. B., 1.

Chalk Creek, map : Chapman, J. A. J., 1.

Chalk Mountain, sanidine in rhyolite: Cross, 6. sanidine and topaz: Cross, 4.

Charcoal, at depth in Silver Cliff mine: Charlton, T., 1. in Bassick mine: Mg. and Sci. Press, 12.

Chemical analyses. See list, page 458.

Chemical products, production of 1905: Ores and Metals, 9.

Cherry Creek, gold placers: Wilson, J. S.

Cheyenne Canyon, West, nitile and

danalite from: Genth, 1. Cheyenne County, map: Clason Map Co. water supply: Hay, Robert, 2. Cheyenne Mountain, fayalite: Hidden and Mackentosh, 1. tysonite and bastn&site: Hille-

brand, 8. xenotime: Penfleld, 6. Cheyenne Wells quadrangle, map: U.

S. G. S. Chonollths, Monarch-Tomichi: Craw- ford, 4. Cimarron, landslide: Cross, 9. Cimarron Canyon, Morrison of: Lee,

W. T., 4. Cimarron Creek: Peale, Cinnabar, Chaffee County: E. and M.

J., 15. Clarks Peak, granite: King,l; Zirkel, 1. Clay.

Oeneral: Bailar, 3; Lakes, 51, 235; Lee, H. A., 1 ; Lesquereux, Leo, 2. bibliography: Branner, 1. Boulder district: Fenneman, 5;

Langridge, 1. brick. See brick clay, brick and fire: Lakes, 219. fire. See fire clay, china: Lakes, 51.

Index

Clay. — Continued.

Durango-Gallup district: Shaler and Gardner, 1.

Elk Mountains: Emmons, Cross, and EHdridge, 1.

formations: Ries, 1.

industry, 1896: Ries, 2.

northern Colorado: Henderson, J.,

northwestern Colorado : Hender- son, J., 13.

production, 1883-18S4, 1891-1894, 1897-1911: Day, 6, 8, 10, 12, 13, 14, 15, 16, 18; Emmons, Cross and Eldridge, 2; Middleton, 3; Ores and Metals, 3, 9; Parker, E. W., 7; Roth well, 2, 6, 7, 8; Struthers. 1, 2, 3; Thom, 1, 2; Tonge, 12; Warwick, 4; Wil- liams, A., 1.

Pueblo quadrangle, Gilbert, 7. Clear Greek, hydrology: Newell. 16,

geology, areal: Underbill, 4.

geology, dynamic: Lakes, 49; Un- derbill, 4.

gneiss and granite: Underbill, 4. Clear Creek County. General: Endlich,

1, 6; Henning, 4; Lindgren, 2. antiquities: Cannon, 1. geology, economic: Emmons, 7;

Fosse tt, 1; Hague, 1. granite quarries: Merrill, 4. granite, gray, analysis : Lakes, 165. gold deposits: Lawrence, B. B., 2;

Sharwood, W. J., 1. gold and silver, production 1859-

1887: Munson, 1. lead deposits: Lawrence, B. B., 2. Little Mattie group: Wascott, 1. map: Clason Map Co.; Couzens, 1. milling, 1906; Richards and Locke,

minerals: Emmons, 7; Loew, 1. mines described, 1867; Holister —

1869-1874: Raymond, 1, 4, 5, 7, 9,

10—1880-1883; Burchard, H.C., 1,

2, 3, 4; Callbreath, 1; Collins, G. E., 3, 5, 6, 9; Henderson, C. W.,

3, 4; Hodges, 1; Lakes, 5; Lee, H. A., 9; Miner, 1; Mg. Rept, 15, 24; Rickard, T. A., 6; Roth well, 6.

Clear Creek County. — Continued.

mines, leasing system: Lawrence, B. B., 1.

mining, timbering of mines: Mc- Clelland, 1.

ore deposits: Bancroft, G. J., 6;

Lakes, 233, 243; Lee, H. A., 9;

Spurr and Garrey, 2; Spurr,

Garrey, and Ball, 1. . paleontology, fossil described :

Berthand, E. L., 1. Pelican mine: Lawrence, B. B., 2. physiography: Underbill, 4. placer mining: Callbreath, 1;

Lakes, 19, 22; Mg. Rept., 2;

Spurr and Garrey, 2. silver: Lawrence, B. B., 2; Vinton,

triangulation in: Gannett, S. S., 2,

vein structure: Lakes, 49. water analysis : Headden, 4. zinc: Lawrence, B. B., 2.

Coal.

General: Bailar, 3; Bancroft, 2; Campbell, 3; Darton, 9; Elliott, R. S., 1; Emmons, S. F., 4, 7; Endlich, 1, 5; E. and M. J., 8; Fenneman and Gale, 2; Fossett, 1; Frazer, 1; Foster, E. L., 1; George, 5; Hague, 1; Hanes and Parsons, 1; Hayden, 5, 6, 20; Hayes, C. W., 1; Hills, R. C, 22; Hodge, 1; Johnson, 2; Lesque- reux, 2; Loew, 1; Marvine, 1; McLaughlin, J. E., 1; Newberry, 12; Peale, 5; Raymond, 9; Rltter, 3; St. John, 1; West, W., 1.

accidents in mines, 1895-1897: Roth- well, 4, 6.

Aguilar field: Lakes, 117.

Allen-Bond district : Emmons, Cross, and Eldridge, 2.

alteration by contact metamor- phism: Stevenson, 14.

analyses by counties : Lord, 2.

analyses: See calorific value and analyses, below; also list of chemical analyses, page 458.

Animas River: Lakes, 105.

Index

Coal. — Continued.

anthracite. Crested Butte: Em- mons, Cross, and Eldridge, 1; Hosea, 3; Lakes, 6.

anthracite. Grand River district: Lakes, 160.

anthracite, Gunnison : Emmons, Cross, and Eldridge, 1; Hills, R.

anthracite, production' 1898: Day, 11—1889-1890, 1901-1905: Day, 5, 14, 15, 18—1907: Thorn, 2.

anthracite, production. Ragged Mountains, Chair Mountain : Hewitt, 1.

anthracite, Routt County: Chisolm, 3; Fenneman and Gale, 1, 2; Lakes, 168, 153.

anthracite, Yamp field: Fenneman and Gale, 1, 2; Hills, R. C, 22; Lakes, 153, 161.

anthracite: Ashbumer, 1; Hosea, 6; Lakes, 169; Peale, 7.

anthracite district: Peale, 7.

Anthracite-Crested Butte : Emmons, Cross, and Eldridge, 1; McNeil,

Archuleta County: Lee, H. A., 9.

area, estimated in Colorado: Hills, R. C, 22.

Berwind-Agullar group: Hills, R. C, 25.

bibliography of U. S. Geol. Surv. publications : Lee and Nickles, 1.

Book Cliffs field: Lakes, 130; Rich- ardson, 1.

Boulder County : Am. Jour. Mg., 4 ; Emmons, Cross, and EHdridge, 2 ; Fenneman, 5; Hayden, 2, 4; Headden, 8; Langridge, 1; Wal- ters, 1.

Briquets: Pratt, J. H., 2.

brown, of Utah and adjoining terri- tories: Engelmann, 2.

Calorific value and analyses.

(General: McNeil, 4.

Adams county: Lord, 2.

Anthracite-Crested Butte: Em- mons, Cross, and Eldridge, 1; Hills, 22; Lee, 13.

Coal. — Continued.

Calorific value and analyses, — Con- tinued.

Archuleta county: Lord, 2.

Book Cliffs: Richardson,!.

Boulder county: Emmons, Cross, and Eldridge, 2; Lord 2; Pot- ter, 1; Marvine, 1.

Canon City: Hills, 22; Wash- burn, 5, Raymond, 6.

Coal Creek: Lee, 13.

Colorado Springs: Goldman, 1.

Crested Butte field: Lee, 13.

Crested Butte and Floresta fields: Lee, 13. See also An- thracite-Crested Butte and Gun- nison.

Dakota coal nfeasures: Hills, 22.

Danforth Hills and Grand Hog- back: Gale, 3, 8.

Delta county: Lord, 2; Wood- ruff, 1.

Denver Basin: Emmons, Cross, and EHdridge, 2; Martin, 2.

Durango, Durango-Oallup, Du- rango-Monero: Gardner, 1; Schrader, 1; Taff, 1.

El Paso county: Lord, 1.

Floresta and Mt. Carbon: Lee,

Fremont county: Lord, 2; Pot- ter, 1; Raymond, 6, Marvine, 1.

Garfield county: Lord, 2.

Grand Hogback: Gale, 3, 8.

Grand Mesa: Lee, 10, 13.

Grand Mesa and W. Elk Moun- tains : Lee, 13.

Grand River: Hills, 22.

Gunnison county: iJord, 2; Pope, 1; Potter, 1.

Gunnison district: Lee, 13.

Gunnison valley: Woodruff, 1.

Huerfano county: Hills, 15, 25; Lord, 2; Potter, 1.

Jefferson county: Lord, 2; Pot- ter, 1; Marvine, 1.

La Plata county: Hills, 22; Lord,

Larimer county: Lord, 2.

Las Animas county: Hills, 15, 22, 24, 26; Lord, 2; Pope, 1; Potter, 1; Richardson,

Index

Coal. — Continued.

Calorific value and analyses. — Con- tinued. Marshall: Grout, 1. Mesa county: Liord, 2; Pope, 1;

Woodruff, 1. Moffat. See Rout, Yampa. Montezuma county: Lord, 2. Mount Carbon: Lee, 13. North Park: Hills, 22. northwestern Colorado: Gale, 7,

Palisades: Lee, 13. Pitkin county: Lord, 2. Raton field: Hills, 15, 22, 24, 25;

Richardson, 2. Rio Blanco county: Lord, 2. Rollins: Lee, 13. Routt county: Gale, 8; Lord, 2;

Pope, 1. Somerset: Lee, 13. South Park: Hills, 22; Potter, 1. South Platte: Hills, 22. Tongue Mesa: Hills, 22. Trinidad: Hills. 15, 22, 24, 25;

Richardson, 2. Uinta Basin: Gale, 7. Walsenburg-Trinidad : Hills, 15,

22, 24, 25; Richardson, 2. Weld county: Lord, 2; Potter, 1;

Marvine, 1. West Elk Mountains: Lee, 13. White River: Gale, 7, 8. Tampa field: Fenneman and

Gale, 2; Gale, 7, 8; Hills, 22;

Pope, 1.

Canfield-Erie district: Emmons, Cross, and Eldridge, 2.

Canon City region: Darton, 9; Drown, 1; Hanes, 1; Hills, R. C, 22; Lakes, 6, 154; Potter, W. B., 1; Stevenson, 9, 11; Storrs, 1; Washburn, 5; Whiteside, 4.

Carboniferous at Aspen and Glen- wood: Hills, R. C, 6.

Central division, mines, character of product, employees, statistics, etc.: Day, 4.

changes produced by eruptions: Hills. R. C, 15.

classification: Campell, 1.

Coal. — Continued.

coking. See coke.

Como: Storrs,!.

Colorado Springs region: Darton, 9; Goldman, 1; Griswold, C. T., 1 ; Hayden, 19 ; Lakes, 90.

Crested Butte. See also Anthra- cite-Crested Butte.

Crested Butte: Lakes, 4, 6, 172;

Rickard,T. A., 23; Warren, B. R.,

2; Williams, C. P., 1. Dakota formation, Rico quadrangle :

Cross and Ransome, 1. Dakota formation, San Juan : Com-

stock, T. B., 7.

Dakota formation, Telluride; Pu- rington, 2.

Dakota formation, Turkey Creek: Stone, 8.

Dakota formation: Hills, R. C, 22; Lakes, 69, 157; Peale, 8; Storrs,

Danforth Hills and Grand Hogback:

Gale, 3. Davidson district: Emmons, Cross, and Eldridge, 2.

Delta County, Gunnison Valley: Woodruff, E. G., 1.

Denver Basin: Cannon, 10; Darton, 9 ; Emmons, Cross, and Eldridge, 2; Griswold, C. T., 1; Lakes, 6; Martin, 2.

deposits of Colorado: Chauvenet, 10; Lakes, 219; Smith, J. A., 1.

Durango: Lakes, 6, 223; Taff, 1.

Durango-Monero field: Gardner, J.

H., 1. Durango-Gallup field: Hayden, 22;

Holmes, 2; Schrader, 1. Durango-Mesa Verde field: Shaler,

eastern Colorado: Hollister, 1. east of the Range : Lakes, 213. EHk Mountains: Emmons, Cross,

and Eldridge, 1. El Paso field: Lakes, 58. Elmoro quadrangle : Hills, R. C, 24. Erie: Potter, W. B., 1.

Index

Coal. — Continued.

explosions in mines: Duck, 1; Mines and Mining, 1 ; Whiteside,

Floresta field: Lee, W. T., 13.

formations bearing: Lakes, 186.

Fox Hills: King, 1; Stevenson, 5.

Fremont County: Raymond, 9; Wil- liams, S. G., 1.

Garfield-Newcastle: Hosea, 2.

Golden district: Emmons, Cross,

and Eldridge, 2 ; Lakes, 6. Grand Junction: Stone, 8. Grand Mesa: Lee, W. T., 10, 13.

Grand River: Hills, R. C, 22; Lakes, 72, 169, 172; Storrs, 1; Thiele, 1.

Gray Creek mine: Whiteside, 1.

Gunnison: Chauvenet, 6; Emmons, Cross, and Eldridge, 1; Hallo- well, 2; Hills, R. C, 22; Lakes, 6; Lee. H. A., 0.

Gunnison, analysis of 32 coals from: Eakins, 6.

Hahns Peak, Elk Head Mountains: Draper, 1.

Huerfano: Hills, R. C, 15, 22, 25; Lakes, 172; Lee, H. A., 9.

Jerome Park, Sunshine district: Lakes, 6.

Lafayette: Emmons, Cross and Eldridge, 2; Lakes, 6; Rust, E. D., 1 ; Parker, Holmes, and Camp- bell, 2.

La Plata County : Clayton, 1 ; Cross, Spencer and Purington, 1; Free- land, 1; Hills, R. C, 22; Lakes, 45, 157; Lee, H. A., 9; Storrs, 1.

Laramie measures, Anthracite- Crested Butte; Emmons, Cross, and Eldridge, 1; Emmons, 20; King, 1; Newberry, 16.

Las Animas and Huerfano coun- ties: Guiterman, K. S., 1; Hills, R. C, 15, 22, 24, 25, 26, 27; Lee, H. A., 9; Richardson, 2.

La Veta district: Hills, R. C, 25; Lakes, 231; Richardson, 2.

Coal. — Continued.

lignite. Bibliography of U. S. Oeol. Surv. publications: Lee and Nickles, 1.

lignite, calorific value of: Ray- mond, 6.

lignite, metallurgical value of: Eilers> 2.

lignite: Hay den, 4, 7; Pierce, R. A., 1; Potter, W. B., 1.

Louisville: Emmons, Cross, and Eldridge, 2; Lakes, 6.

maps: George, 5; Goldman, 1; Lakes, 6; Marvine, 1; Storrs, 1.

Marshall: Emmons, Cross, and Eldridge, 2; Hayden, 15; Lakes, 6 ; Potter, W. B., 1.

metallurgy in: West, W., 1.

mines: E. and M. J., 30; GriflElth, 1; Jones, J. D., 3, 5 ; McNeil, 3.

mines, use of power in: Roth well,

mining, contract prices for: E. and

M. J., 26; Rothwell, 4. mining, described by counties:

Jones, J. H., 1, 2. mining machines: Rothwell, 4. mining methods, Elmoro field:

Hills, R. C, 24. mining methods, Spanish Peaks:

Hills, R. C, 25. mining methods, Walsenburg:

Hills, R. C, 15. Mitchell: Elmmons, Cross, and

Eldridge, 2. Morley-Smiths Canyon group:

Hills, R. C, 25; Richardson, 2. Mount Carbon: Emmons, Cross,

and Eldridge, 2; Lee, W. T., 13. Morrison: Potter, W. B., 1. Mount Diablo: Mg. and Sci. Press,

New Castle: Emmons, 20; Glenn,

1; Lakes, 6. northern field : Day, 4 ; Henderson,

J., 10; Lakes, 152, 154. North Park: Day, 4; Grout, Worces- ter,, and Henderson, 1; Hills, R.

C, 22; Shubart, B., 2; Storrs, 1.

Index

Coal. — Continued.

northwestern: Gale, 7, 8; Hender- son, K., 13; White, C. A., 4.

Oak Greelc: "White and Perry, 1.

Oh be Joyful Creek: Peale, 7.

origin of: Lakes, 6.

Ouray quadrangle: Cross, Howe, and Irving, 1; Koenig, 3.

Pagosa Springs: Gardner, J. H., 1.

Park County: McNeil,!.

Primero: Hosea, 4.

producer gas tests: Fernald, 1.

production 1869 : Raymond, 1—1873- 1879: McNeil, 2—1883-1884: Williams, A., 1—1885 : Chisholm, 2; Day, 1—1887: Day, 3—1887- 1888: Ashburner, 1; Day, 4; Mc- Neil, 3—1873-1889: Lakes, 163— 1889-1890: Day, 5; Jones, J. H., 1; McNeil, 4 — 1891: Day. 6 — 1892: Rothwell, 1—1893: Day, 8; Rothwell, 2— Denver Basin, 1864- 1894: Emmons, Cross, and Eld- ridge, 2—1864-1894: Parker, E. W., 1; Rothwell, 3—1895: Day, 9; Rothwell, 4 — 1896: Rothwell, 5— by counties, 1873-1896: Grif- fith, 1—1897: Day, 10; Rothwell, 6—1898: Day, 11; Griffith, 2; Rothwell, 8— 1899: Day, 12; Roth- well, 7—1864-1900: Day, 13; Mg. Rept, 15; Ores and Metals, 3; Struthers, 1 — 1901: Day, 14; Lee, H. A., 8; Mg. Rept., 26; Denman, 1—1902: Day, 15; Denman, 2; Struthers, 3—1903: Day, 16; Eakle, 2; Jones, J. D., 1; New- land, 1 — 1904: Day, 17; Jones, J. D., 1, 2; Judd; Mines and Min- eralfs, 3—1905: Day, 18; Ingalls, 4; Jones, J. D., 4; Ores and Metals, 9; Parker, E. W., 2 — 1906: Ingalls, 5; Jones, J. D., 3; Mines and Minerals, 3; Thom, 1 — 1907: Ingalls, 6; Jones, J. D., 6; Parker, 4; Thom, 2—1908: Ingalls, 7; Jones, J.D., 7; Parker, E. W., 3—1909: Ingalls, 8; Jones, J. D., 8; Parker, 5—1910: Fay, 1; Warwick, 4 — 1911 : Dalrymple, J.,

Coal. — Continued.

1; Parker, E. W., 7; Parsons, F. W., 1 — general: Lee, 1; Tonge, 12, 14; Day, 11; Nat. Conserva- tion Com., 1.

Pueblo quadrangle: Gilbert, 7;

Stone, 8. Purgatory district: Richardson, 2.

Rabbit Ears region : Grout, Worces- ter, and Henderson, 1.

Ralston Creek: Emmons, Cross, and Eldridge, 2.

Ralston Creek, Leyden, Marshall: Macfarlane, 1.

Raton field: Endlich, 4; Hills, R. C, 22; Storrs, 1.

Rob Roy coal mine : E. and M. J., 3.

Rock Creek and Coal Basin: Lakes,

Routt County: Craise, 1; E. and M. J., 37; Headden, 9; Lakes, 167, 172, 190; Lee, H. A., 9; Parsons and Liddell, 1; Weston, 5, 7.

San Juan: Lakes, 181.

Scranton field: Emmons, Cross, and Eldridge, 2.

Sedalia: Emmons, Cross, and Eld- ridge, 2.

Sopris mines: Hills, R. C, 25.

Southern division: Day, 4; Steven- son, 6; Mines and Minerals, 5.

South Park: Hills, R.C., 22; Lakes, 115, 163; Stevenson, 1; Wash- burne, 4.

South Platte field: Hayden, 14, 19; Hills, R. C, 22; Storrs, 1.

Spanish Peaks: Hills, R. C, 9, 25; Lakes, 108, 156.

spontaneous combustion in coal fields: Lakes, 183.

steaming tests, bibliography of: Breckenridge, 1.

Starkville explosion: Mines and Minerals, 9.

Stonewall district: Richardson, 2.

Sunlight: Shubart, B., 1.

Superior: Emmons, Cross, and Eld- ridge, 2.

Telluride: Cross and Purington, 1.

(12)

Indbx

Coal. — Continued.

Tercio and Cuatro mines: Hosea, 5; Merriam, 1; Plum, 1; Richard- son, 2.

tests: Day, 18; Parker, Holmes and Campbell, 1.

Tongue Mesa coal field: Lakes, 157; Storrs, 1.

Trinidad: Conkling, 3; Darton, 9 Englemann, 1; Hills. R. C, 26 Lakes, 3, 6; Potter, W. B., 1 Richardson, 2; Savage, 1; Ste- venson, 8; Whiteside, 2.

Walsenburg: Hills, R. C, 15, 27; Lakes, 158; Potter, W. B., 1; Richardson, 2; Whiteside, 4.

Walsenburg-Trinidad region: Dar- ton, 9; Lakes, 158; Savage, 1.

washing, Hastings: Murray,!.

washing, Segundo: Richards, 7.

washing, Sopris: E. and M. J., 22; Mosea, 1, 5.

washing, Trinidad: Richardson, 2.

Weld County, Puritan mine: Wat- son, J., 1.

western division: Day, 4.

West Elk Mountains: Lee, W. T.,

Wootton: Hills, R. C. 25.

Uncompahgre Valley: Peale, 8.

Yampa: Campbell, 2; Fenneman and Gale, 1, 2; Herrick, 2; Hills, R. C, 22; Holmes, 2; Jones, J. D., 3; Lakes, 129, 169; Mg. Rept, 36; Storrs, 1; Thomas, K., 1; Weston, 6; White and Perry, 1.

Coal Creek, pre-Cambrian : Van Hise, 1.

Coal tar, production, 1903-1907: Day, 16, 17, 18; Thom, 1, 2.

Cobalt, production, 1883, 1884, 1892, 1904: Judd, 1;- Rothwell, 1; Wil- liams, A., 1.

Cochetopa district, mines and produc- tion 1880: Burchard, H. C, 1.

Cochetopa Pass: Beckwith, 1.

Coke.

Oeneral: Bailar, 3; Eilers, 4; Guit- erman, K. S., 1; Lakes, 128, 163, bibliography: Lee and Nickles, 1.

Coke. — Continued.

bibliography, U. S. Geol. Surv. pub- lications: Lee and Nickles, 1.

coal, Rock Creek:' Hewett, 1.

coals : Weeks, J. D., 1, 3.

lignites: Eilers, 4.

manufacture, Elmoro: Hills, R. C,

manufacture, Spanish Peaks: Hills. R. C, 25.

manufacture: Hosea, 5.

production, 1883-1884 : Williams, A., 1—1885-1888: Day, 1, 2. 3. 4— 1889: Lakes, 163—1889-1890: Mc- Neil, 4—1891: Day, 6—1892: Day, 7; Rothwell. 1—1893: Day, 8—1894-1895: Day, 9; Rothwell. 3, 4—1896: Rothwell. 5—1897: Day, 10; Rothwell, 6—1898: Day. 11; Rothwell, 8—1899: Day. 12; Rothwell, 7—1900: Day, 13; Ores and Metals, 3; Stnithers, 1 — 1901-1902: Day, 14, 15; Struthers, 2, 3—1903: Day, 16; Newland, 1 —1904: Day, 17; Jones, J. D., 4 — 1906: Jones, J. D., 3; Thom, 1 — 1907: Ingalls, 6; Mg. World. 5; Thom, 2—1908: Jones, J. D., 7; Parker, E. W., 3—1909: Parker, E. W., 5—1910: Fay. 1; Parker, E. W., 6—1911: Parker, E. W., 7; Parsons, F. W., 1.

Trinidad field: Richardson, 2.

Trinidad and Crested Butte r Lakes,

tests: Belden, Delamater. and Groves, 1; Lee. W. T., 13.

Walsenburg: Hills, R. C, 27.

Cokedale, coal mine explosion: Duck, 2. Coke Oven, coal from: Purington. 2. Colorado Canyon: Davis, W. M.. 9. Colorado City, geology: Hayden, 6. gypsum beds near: Lakes. 141. mills: Croll, 1; Fulton, 1; Hena-

hen, 1. paleontology: Meek, 1. Colorado Desert, ancient lakes in:

Blake, W. P., 1. Colorado Plateau: Gilbert, 2; New- berry, 3.

Index

Colorado Range.

Archean of: Hague and Emmons, 1; King, 1.

Cretaceous: Hague and Emmons,

Eastern foothills: Hague nd Em- mons, 1.

Jurassic: Hague and Emmons, 1.

Triassic: Hague and Emmons, 1.

Colorado River, hydrology: Hinderlider and Swendsen, 1; Hinderlider, Swendsen, and Chandler, 1; Meeker and Reed, 1; Newell, 6, 7; Walcott, 13.

Colorado Springs, General: Cross, 22;

Lesquereux, 2; W. P. H., 1.

coal deposits : Darton, 9 ;. Goldman,

1; Griswold, C. T., 1; Hayden,

19; Lakes, 90.

clay deposits: Clarke and Hille-

brand, 1. geology: Finlay, 1; Hayden, 14,19;

Peale, 5. map: Clason Map Co.; Finlay, 1;

Hayden, 19; U. S. G. S. minerals from described: Peale, 1. mineral water : Stevenson, 3. paleontology, fossil described :

Cragin, 2. pottery plant: Riddle, 1. Colorado-Wyoming state line, triangu- lation and traverse: Wilson et al, 4. Columbine, ore deposits: Gale, 1. Comanchean (Purgatoire formation) :

Stanton, 3; Stose, 1. Como, iron ore deposits described and analyzed: Chauvenet, 3. coal field: Storrs, 1. Comparitone. See correlations and

comparisons. Concrete aggregates: Kesner and Doo-

little, 1. Cone-in-cone: Newberry, 8. Conejot County, map: Clason Map Co. mines and ore deposits: Lee, H. A.,

9, mines described, 1873: Raymond,

precious stones: Sterrett, 2.

Continental Divide: Bechler, 1. map: Clason Map Co.

Copper, General: Endlich, 1, 5; Hague, 1; Hayden, 6; Jernegan, 1; Lakes, 5, 143; Mg. Rev., 3; Ste- venson, 3; Weed, 4.

Bear Creek, gray: Emmons, W. H.,

Cashin mine: Emmons, W. H., 3.

Chaffee County: E. and M. J., 15; Lindgren, 8.

Crested Butte: Lakes, 5; Warren, L. R., 2.

Cripple Creek: Rickard, T. A., 14.

Custer County, Bassick mine: Mg. and Sci. Press, 12.

enargite: Pirsson, 1.

Evergreen district: Bastin and Hill, 1 ; Ritter. 4, 5.

Fremont County: Lindgren, 8, 9.

Gilpin County: Ritter, 5.

Hahns Peak: George and Craw- ford, 1.

Hall Valley: Jernegan, 2.

Idaho Springs: Spurr and Garrey,

Jefferson County: Lindgren, 8.

Lake City: Irving and Bancroft, 1.

La Salle Mountains : Lakes, 67.

lead, and: Emmons, S. F., 1.

Leadville: Douglas, 1; Emmons, S. F., 2, 21; Snedaker, 3; Warwick, la.

metallurgy, Cashin mine : Emmons, W. H., 3.

metallurgy, electrostatic separa- tion: Swart, 2.

mining: Van Wagenen, T. F., 2.

Monarch-Garfield : Crawford, 3.

Monarch-Tomichi : Crawford, 4.

Ouray: Kedzie, 1; Ransome, 4.

Paradox Valley : Lakes, 67.

Pearl: Read, 1; Spencer, A. C, 5.

production, 1883-1884 : Williams, A., 1—1885-1905: Day, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17. 18—1885: E. and M. J., 10— 1887: Mg. Ind., 1—1892-1899: Roth well, 1, 2, 3, 4. 5, 6, 7. 8—1896: Min. Ind. and Rev., 9—1900-1901:

Index

Copper. — Continued.

Stnithers, 1, 2—1901 : Lee, H. A., 8, 9—1902: Downer, F., 1, 2; Ores and Metals, 6; Mines and Mining, 2— 1903: Eakle,2; E. and M. J., 38; Mg. Rept., 34; New- land, 1—1904: Judd, 1; Mines and Mining, 3 — 1905: Ingalls, 4; Mg. Rept, 40; Ores and Metals, 9; Weed, 4 — 1906: Ingalls, 5; Thorn, 1—1907: Dalzell, 2; In- galls, 6; Thorn, 2—1908: Butler, B. S., 1; Collins, G. E., 8; Hen- derson, C. W., 1; Ingalls, 7 — 1909: Butler, B. S., 2; Collins, G. E., 9; Ingalls, 8—1911: Col- lins, G. E., 11 ; Henderson, C. W., 5; Parker, E. W., 7; Of, 1—1912: Henahen, 1 — general: Dalzell, 4; Fay, 1 ; Tonge, 14 ; Van Wagenen, T. F., 4; Warwick, 4.

Red Mountain: Kedzie, 1; Lakes,

resources : Nat. Conservation Com., 1.

Rosita: Clark, R. N., 2.

Salida: Emmons, 21.

San Juan County: Comstock, T. B., 1; Erndlich, 3; Ihlseng, 1.

Sangre de Cristo Range: Bagg, 2.

San Miguel County: Spaulding, 1.

tellurium contained : Egleston, 2.

Correlations and Comparisons.

Archean rocks: King, 1.

Aspen, Leadville: Henrich, 2.

Benton, Mancos, Pierre: Cross, Spencer and Purington, 1.

Boulder County, and Kalgoorlie veins: Rickard, T. A., 21.

Boulder County ores and Transyl- vania: Rickard, T. A., 8.

Camhrian: Walcott, 2.

Carboniferous: Girty, 2.

clastic dikes: Ransome, 4.

coal measures, southern Colorado: Stevenson, 8.

coal measures and Hermosa: Cross and Spencer, 1.

coal measures: Endlich, 4.

Correlations and Comparisons. — Con- tinued, coals of Tampa field with others:

Campbell, 2. Colorado formation. Black Hills, Colorado, Iowa, Kansas, Nebras- ka: Logan, 1.

Colorado Range and Mosquito Range: Emmons, 9.

Cretaceous and Neocene: Hills, R. C, 24.

Cripple Creek ores and New Zea- land: Rickard, T. A., 8.

Cripple Creek and Rosita Hills: Spurr, Garrey, and Ball, 1.

Cripple Creek tunnel with foreign tunnels: Lakes, 98.

Cutler formation, Rico quadrangle: Cross and Ransome, 1.

Denver beds. Black Buttes, Con- verse County, Wyoming: Hatcher,

Denver and Arapahoe beds with other formations of the state: Emmons, Cross, and Elldridge, 2.

Denver, Middle Park: Eldridge, 6.

Devonian and Carboniferous: Wil- liams, H. S., 2.

Devonian of Colorado, Utah and Arizona: Spencer, A. C., 2.

Devonian formation: Eastman, 1; Girty, 1; Spencer, A. C, 2; Wil- liams, H. S., 3.

Dolores and Triassic: Cross and Ransome, 1; Cross, Spencer and Purington, 1.

Elbert and Ouray: Cross, 33.

Elbert and Parting Quartzite, As- pen: Cross, Howe, and Irving, 1.

Eocene: Clark, W. B., 1; Smith, J. H., 1.

geological formations, folios: Un- derbill, 3.

geological formations, names: Gale, 3, 5; Gilbert, 7; Hills, R. C, 24.

geological formations, names, used for strata in western Colorado: Gale, 8.

geological formations: Cross, 35; Peale, 7; White, C. A., 4.

Index

Correiationt and Comparisons. — Con- tinued.

Georgetown, dikes: Spurr, Garrey,

and Ball, 1. Gilpin County and California mill- ing: Rogers, A. N., 1. gravel covered terraces : Howe and Cross, 1.

greenstones, of Needle Mountains with Menominee and Marquette regions: Cross, Howe, and Irv- ing, 1.

Hermosa and coal measures: Cross and Spencer, 1.

Hermosa and Weber and lower Ma- roon: Cross, Howe, and Irving, 1.

Idaho Springs, dikes: Spurr, Car- rey, and Ball, 1.

Jurassic beds: Emmons, 17.

La Plata and Gunnison: Cross and Ransome, 1; Cross, Spencer and Purington, 1 ; Cross and Spencer,

Laramie and Cretaceous: Fenne- man and Gale, 1.

Laramie, definition, origin of term : Veatch, 1.

Laramie, Mesaverde: Lee, W. T.,

Laramie and Poison Canyon: Hills, R. C, 28.

Laramie, western Wyoming and adjacent parts of Colorado: Peale, 13.

Leadville and Aspen formations: Henrich, 2; Lakes, 2.

Lewis shale and Montana forma- tion: Cross, Spencer and Puring- ton, 1.

Mancos and Benton and Pierre: Cross and Spencer, 1.

Manitou embayment and other re- gions: Crosby, 3.

Maroon and Weber: Cross and Spencer, 1.

McElmo and Morrison : Cross and Ransome, 1; Cross and Spencer, 1; Cross, Spencer and Puring- ton, 1.

Correlations and Comparisons. — Con- tinued.

Menominee and Marquette with Irving greenstones: Howe, 1.

Mesaverde, Montana, Fox Hills: Cross, Spencer and Purington, 1.

Mesaverde, Laramie: Lee, W. T.,

Middle Park and Denver forma- tion: Eldridge, 5.

Milling, Colorado and California: Rickard, T. A., 1; Rogers, A. N.,

Monument Creek: Darton, 12.

Morrison, Atlantosaurus beds, Como, Beulah, Gunnison: Stan- ton, 3.

Morrison, Como, non-Marine Jura: Lee, W. T., 6.

Neocene: Dall and Harris, 1.

Ore deposits of state: Lakes, 200.

Ouray and Elk Mountains: Cross, Howe, and Irving, 1.

Ouray and San Juan, Devonian and Carboniferous : Cross, Howe, and Ransome, 1.

Paleogeography and correlation: Osbom, H. F., 6.

Paleozoic strata: Emmons, 17; Hayden, 19.

Poison Canyon and Laramie: Hills,

Red Beds, Fountain, Ten Sleep: Henderson, 11.

Red Beds: Cross and Howe, 1.

Rico, Permo-Pennsylvanian : Cross and Ransome, 1.

Salida schists and other forma- tions: Cross, 20.

San Miguel and Arapahoe: Cross and Purington, 1.

Southern Colorado, geological for- mations: Stevenson, 8.

Spring waters: Spurr, Garrey, and Ball, 1.

stratigraphic names: Gale, 3, 6, 8; Gilbert, 7; Hills, R. C, 24.

stratigraphy: Endlich, 5.

Index

Correlations and Comparisons. — Con- tinued.

Tellurid( and Arapahoe: Cross, Howe, and Ransome, 1; Cross, Howe, and Irving, 1.

Telluride, igneous names, Hayden survey: Cross and Purington, 1.

Tepee Ruttes and buttes -of other origin: Gilbert and Gulliver, 1.

Tepee Buttes and allied phenom- ena in Canada: Gilbert and Gul- liver, 1.

terraces: Howe and Cross, 1.

Tertiary: Dall, 1; Hayden, 19; King, 1; Scott, W. B., 3.

Weber and Maroon: Cross and Spencer, 1.

West Peaks and Huerfano: Hills, R. C, 25.

Wyoming formation: Emmons. Cross, and Eldridge, 2.

Corundum.

General: Pratt, 1. in pegmatite: Finlay, 2. production. 1893-1894: Rothwell, 2, 3—1903: Day, 1(>.

Costilla County, artesian water: Head- den, 13.

gold dredging: Julian, 1.

Grayback area, geology: Patton, 8.

Grayback area, map: Patton, 8.

Grayback placer: Julian, 1.

magnetite: Rolker. 1.

map: Clason Map Co.

mines, and ore deposits: Lee, H. A.. 9; Henderson, C. W., 4; Pat- ton, 8; Rickard, T. A.. 28.

Sangre de Cristo Mountains, ore deposits: Gunther, 1; van Diest, E. C, and P. H.. 1. ' Cottonwood, map: ('hapman, J. A. J., 1. Coyote Basin: White. 4. Creede.

(reneral: Lakes, lo.

amethyst: Lakes, 43.

mines described: Day, 6; Johnson, Ti. 11., 5; Lakes, 125; Rickard, T. A., H.

mills described: Mg.Ind.and Rept., 8; Mg. Rept., 28. 42.

Creede. — Continued.

ore deposits described: Emmons and Larsen, 1; Lakes, 21, 233; Lee, H. A., 9; MacMechen, 1; Spurr, Garrey, and Ball, 1 ; Rick- ard, T. A., 28.

production, 1897-1901: Lee, H. A.,

silver deposits: Lakes, 16.

Crested Butte. See also Anthracite- Crested Butte.

anthracite coal: Hosea, 3; Lakes,

basalt: Emmons, Cross, and Eld- ridge, 1.

coal, analysis of: Eakins, 6; Em- mons, Cross, and EHdridge, 1; Frazer,2; Lakes, 4, 6; McNeil, 1; Rickard, T. A., 23; Williams, C. P., 1.

coal : Frazer, 2 ; Lakes, 4, 172 ; Mc- Neil, 1; Rickard, T. A., 23; War- ren, E. R., 1; Williams, C. P., 1.

coke, analysis of: Weeks, J. D., 3.

coke: Lakes, 4; Weeks, 3.

copper: Lakes, 6; Warren. 2.

diorite: Emmons, Cross, and Eld- ridge, 1.

geology, dynamic: ESmmons, Cross, and Eldridge, 1; Lakes, 6.

geology and map: Cross, 23.

granite: Emmons, Cross, and Eld- ridge, 1.

iron ore, analysis of: Chauvenet, 5.

iron ore, bog: Lakes, 4, 6; War- ren, E. R., 2.

lead: Lakes. 6; Warren, E. R., 2.

map: U. S. G. S.

ore deposits: Warren, E. R., 2.

paleontology, fossil described : Walcott, 8.

porphyrite: Emmons, Cross, ant Eldridge, 1.

rhyolite: Emmons, Cross, and Eld- ridge, 1.

silver: Warren, E. R., 2; Lakes, 6.

vein-walls. Keystone mine: War- ren, E. R., 1. Crestone, ore deposits: Rickard, T. A.,

Index

:j.V.)

Cretaceous. St rat (graphic.

General: Cope, 23; Cross, 22; Em- mons, 4; Endlich, 1, 3, 5; Gale, 7; Hayden, 5. 6, 12, 14, 18, 22; King, 1; Lakes, 5, 6, 10, 143; Lee, W. T., 10; Lesquereux, 2, 12; Mar- vine, 1; Newberry, 3; Feale, 5, 7. 8; St. John, 1; Stevenson, 3, 6; Ward, F., 1; White, 26; Woolsey.

Apishapa quadrangle: Stose, 1.

Archuleta County: Lee, H. A., 9. Arkansas Valley: Gilbert, 5. Boulder: Henderson, J., 3. Castle Rock: Lee, W. T., 5. Chalk Creek, Middle Park: Hollis-

ter, 1. coal, Dakota: Lakes, 69. coal. Elk Range: Holmes, 1. coal, Gunnison County: Hills, R.

coal: Hewett, 1; Lakes, 73, 128;

Loew, 1; Newberry, 1. Denver Basin: Eldridge, 2. eastern Colorado: Collier, D. C, 1;

Hay, R., 2; Hayden, 20, 24. Elk Range: Holmes, 1. FYemont County: Williams, S. G.,

Grand River district: Peale, 12. Huerfano Basin: Hills, R. C, 28. Laramie, age of: White, 25. lignites, age of: Cope, 12. lower. Elk Range: Holmes. 1. lower: Hayden, 19; Holmes. 2;

Peale, 7, 8. map: Willis, 2. Marshall: Hayden, 4. middle: Eldridge, 1; Holmes, 2. 6;

Peale, 7. 8. Middle Park, Chalk Creek: Hollis-

ter, 1. Morrison, and, Golden: Cross, 22. northwestern Colorado: Oale, 3;

Hewett, 1; White, 4. ore deposits in: Rickard, T. A.. 28. Ouray, Camp Bird: Titcomb, 1. Palmer Lake: Cannon, 9. Perry Park: Cannon, 7.

Cretaceous. — Continued. itratigraph ic. — Continued. .

Rabbit Ears district: Grout, Wor- cestiT, and Henderson, 1.

Red River: Hill, R. T.. 1.

San Juan. Dakota to Laramie: Read. 4.

San Miguel formation: Cross. 30; Spaulding, 1.

shale, Camp Bird: Titcomb, 1.

southeastern division: Endlich, 4.

South Park: Stevenson, 1.

southwestern Colorado: Spencer. A. C, 1.

time: Gilbert, 4.

Trinidad: (oukling. 3.

upper. Breckenridf<e: Ransome. 5.

upper, Elk Rane: Holmes. 1.

upper, Huerfano Basin: Hills. R.

upper. Red River: Hill, R. T., 1.

upper. South I-ark: Stevenson, 1.

upper Cretaceous: Cragin, 3; Hay- den, 19; Holmes. 2; Peale, 7. 8; Spencer, A. C., 1.

western Colorado stratigraphy: Cross, 35.

Fnlcoutnlogy.

General: Darton, 9, 13; Hayden, 14, 16, 20, 23; Henderson, J., 8, 10, 12, 14; HoUister, X; Holmes. 2; Lesquereux, 1, 2. 3, 4, 6, 7, 8, 9. 10, 12. 13, 14, 17, 18, 19; Marcou. J. B., 1; Marsh, 4, 26, 29, 30, 37; Meade. 1; Meek, 1, la, 2, 3, 4, 4a, 5; Newberry, 3; Peale, 5; Stan- ton, 2; Stevenson, 3, 6; St. John, 1; White, 3, 4, 5, 6b,- 6c, 8. lo. 11. 12. 13. 15, 16, IS, 21, 22, 2fib, 27; Williams, S. G., 1.

Ammonoidea: Hyatt, 1; Stanton, 2a.

Apishapa: Uarton. 13; Hills, 15. 25; Stose. 1.

Arkansas and Colorado: White. 13.

Benton. Boulder arra: Henderson.

Benton. Florenci' area: Eldridge.

Index

Cretaceous. — Continued. Paleontology, — Continued.

Benton, invertebrates: Lee, W. T.,

Benton, Rio Blanco County: Gale,

Benton: Cope, 15; Emmons, Cross, and Eldridge, 2; Fenneman, 2; Logan, 1.

Bitter Creek series : Cope, 16, 19.

Book Cliffs: Richardson, 1.

Boulder area: Fenneman, 5; Hen- derson, 3.

Breckenridge : Ransome, 6.

Carlile: Darton, 13; Gilbert, 5; Hills, R. C, 15, 25.

Castle Rock: Lee, W. T., 5.

Clypeastridae: Cragin, 2.

Colorado group: Endlich, 4, 5; Girty, 3 ; Hague and Emmons, 1 ; King, 1; Stanton, 2; Stevenson,

Comanche: Darton, 11; Stanton, 3.

Dakota, Denver Basin: Emmons, Cross, and Eldridge, 2.

Dakota carnivorous dinosaurian : Cope, 27.

Dakota, dinosauria: Lucas, 1; Marsh, 3.

Dakota, saurians: Cope, 32.

Dakota, Rabbit Ears region: Grout, Worcester, and Henderson, 1.

Dakota: Cope, 41; Cross, 24; Cross and Purington, 1; Endlich, 5; Holmes, 1; Lesquereux, 7, 8, 10, 11, 13; Peale, 7, 8; White, 6, 27.

Danforth Hills: Gale, 3.

Denver Basin: Emmons, Cross, and Eldridge, 2.

dinosaur: Lucas, 1; Marsh, 3.

eastern Colorado: Collier, D. C, 1.

Echinoidea: Clark, W. B., la.

Elmoro: Hills, 24.

Fort Collins district: White, 10.

Fortieth Parallel area: Meek, 5, 6.

Fossil Ridge: Henderson, 9.

Fox Hills: Cockerell, 9; Cope, 19; Darton, 13; Emmons, Cross, and Eldridge, 2; Endlich, 5; Hayden, 20; King, 1; Lee, W. T., 5; Ste- venson, 5; White, 1.

Cretaceous. — Continued. Paleontology. — Continued.

Fox Hills, Boulder district: Hen- derson, J., 3.

Fox Hills, Denver Basin: Eldridge,

Front Range: Lesquereux, 13.

Grand Hogback: Gale, 3.

Graneros shale: Stose, 1.

invertebrates: Cross, Howe, and Irving, 1; Gabb, 1.

Judith River beds: White, 1.

La Plata: Cross, Spencer and Purington, 1.

Laramie, Boulder district: Hender- son, J., 3.

Laramie, Grand River district: Lakes, 160.

Laramie, mammals and homed dinosaurs: Hatcher, 3.

Laramie, molluscan: White, 6, 17.

Laramie, nelumbo: Hollick, 1.

Laramie plant: Hollick, 2.

Laramie, Shoshone: Cross, 38.

Laramie: Clark, W. B., 1; Cocker- ell, 45; Darton, 13; Emmons, Cross, and Eldridge, 1, 2; End- lich, 5 ; Henderson, J., 7, 8 ; Hills, R. C, 24, 25 ; King, 1 ; Lee, W. T., 5; Marsh, 38; Newberry, 18; Peale, 13; Stanton and Knowl- ton, 1 ; Ward, L. F., 3 ; White, 1, 3, 5, 6b, 7, 14, 15, 16, 26, 27.

Lewis shale: Cross, Spencer, and Purington, 1.

Lignitic formation, age of: Lesque- reux, 6; Meek, 2; Stevenson, 2.

Lignitic, lower: Berthand, 2; Cope, 15, 19; Cross, 19; Dana, 2; Hay- den, 14, 15, 16, 18, 20, 23; Lesque- reux, 9, 12, 14; Marvlne, 1; New- berry, 1; Peale, 5, 12; Stevenson,

Lucina profunda: White, 12.

Man cos. Grand Mesa district: Lee, W. T., 13.

Mancos, Hahns Peak district: George and Crawford, 1.

Mancos, Rio Blanco district: Gale,

Index

Cretaceous. — Continued. Paleontology, — Continued.

Mancos: Cross, Howe, and Irving, 1 ; Cross and Purington, 1 ; Cross and Ransome, 1 ; Cross, Spencer, and Purington, 1.

McElmo, Atlantosaunis : Cross, Spencer, and Purington, 1.

Mesaverde, Grand Mesa: Lee, W. T., 13.

Mesaverde, invertebrates: Cross, Spencer, and Purington, 1.

Mesaverde, plants: Cockerel!, 57; Lee, W. T., 14.

Mesaverde, Rio Blanco County: Gale, 5.

Mesaverde: Cross, Howe, and Irv- ing, 1.

middle Cretaceous: Eldridge, 1.

Montana, Aspen district: Spurr, 1.

Montana: Emmons, Cross, and Eld- ridge, 1; White, 27.

Nepesta: Fisher, 1.

Niobrara. Boulder district: Hen- derson, J., 3.

Niobrara, Florence district: Eld- ridge, 4.

Niobrara: Cannon, 8, 10; Cope, 15, 19; Emmons, Cross, and Eld- ridge, 2; Gilbert, 7; Lee, W. T., 5; Logan, 1.

northwestern Colorado: Gale, 3, 8.

Ostreidae: White, 18.

Palmer Lake district: Cannon, 9.

Pawnee Creek beds: Matthew, 5.

Pierre, Boulder district: Hender- son, J., 3.

Pierre, Florence: Eldridge, 5.

Pierre, Tepee zone: Gilbert, 5.

Pierre: Cannon, 10; Cope, 15, 19; Darton, 13 ; Emmons, Cross, and Eldridge, 2; Fisher, 1; Gilbert, 5; Henderson, J., 8; Lee, W. T.,

plants: Cockerell, 9, 57; HoUick, 1, 2; Knowlton, la, 2, 4; Lesque- reux, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19; Peale. 17; Ward, 1, la, 2, 3, 5, 6.

Pueblo: Gilbert, 7.

Cretaceous. — Continued. Paleontology. — Continued.

Purgatoire: Stose, 1.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Rangely: Gale, 5.

Rico: Cross and Ransome, 1.

San Juan district: Meek, 4.

Spanish Peaks: Hills, 25.

Telluride: Cross and Purington, 1.

Timpas, Spanish Peaks: Hills, R. C, 25.

Timpas: Darton, 13; Fisher, 1; Gil- bert,-6; Hills, 15, 24; Stose, 1.

Trinidad district: Conkling, 3; Hills, R. C, 15, 25.

vertebrata: Cockerell, 57; Conrad, 2; Cope, 1, 3, 15, 19, 22, 23, 40; Emmons, Cross, and Eldridge, 2; Endlich, 1, 3, 4, 5.

Walsenburg: Hills, 15.

White River district: Adams, G. I., 1; Cope, 54, 60; Ball and Harris, 1; Marsh, 1; Osborn and Wort- man, 1; Scudder, 8; White, 1.

Yampa coal field: Fenneman and Gale, 2.

Cripple Creek.

General: Blake, lb; Cross and Pen- rose, 1; Draper, 2; E. and M. J., 23 ; Hills, V. C, 1 ; Lakes, 10, 17, 35; Lindgren, 1, 2; Miller, G. W., 1; Moore, C. J., 2; Pearce, R., 11; Skewes, 1 ; Van Wagenen, H. R., 2; Wolcott, G. E., 5; Worcester, S. A., 3.

aegirite and aegirite-augite in pho- nolite: Graton, 1.

alunogen: Hobbs, 2.

amethyst: Lakes, 43.

amphibole, blue: Graton, 1.

analcite in phonolite: Graton, 1.

analcite basalt, analysis of: Cross, 28 ; Clarke, F. W., 9.

antimony: Cross and Penrose, 1.

auriferous iron pyrite: Cross and Penrose, 1.

bonanzas: Rickard, T. A., 17.

breccia: Lindgren and Ransome; 3; Graton, 1.

1 Ndkx

Cripple Creek. — C-ontinued.

breccia and associated ore depos- its: Lakes. 245.

calcite: Cross and Penrose, 1.

calaverite: Clarke, F. W., 9; Hille- brand, 7, 10; Penfield and Ford, 1 ; Lindgren and Ransome, 3.

copper: Cross and Penrose, 1: Tindgren and Ransome, 3; Rick- ard, J. A., 14.

diabase: Graton, 1.

dikes described: Skees, 2.

dividends: E. and M. J., 33.

drainage tunnt'ls: Aldersou, 1; Bain, 6; Countryman, 1, 2; Lakes, 225.

emmonsite (?r. Hillebrand, 12; Ijindgren and Ransome, 3.

epsomite and alnnogen: Hobbs, 2.

feldspar in phonolite: (Iraton, 1.

Fluorine mine: Lakes, 59.

Iluorite: Cross and Penrose, 1.

gas, subterranean, analysis of; Lindgren, 3.

geology, dynamic: Argall, 11; Ban- croft, 1, 4; Cross, 29; Cross and Penrose, 1; i..akes, 18, 21; Lee, H. A., 0; Lindgren, 3; Lindgren and Ransome, 2. 3; Miler, G. W., 1; Pearce. R., 9; Rickard, T. A.. 15. 22. 20; Spurr, Garrey, and Ball, 1; Stevens, 1; Stone, 6; Van Hise. 4; Weed, 2.

geology: Cross. 29; Winslow, 1; Iindgrcn and Ransome. 1; Rick- ard. T. A... 1.

gold: Cross and Penrose. 1 ; Curie, 1; Ingalls, 1; Kemp, la; Knight, F. C., 1; Lakes, 30, 35, 41, 47, 56, T)!*; Liebenan, 1: Lindgren, 4; Ijindgren and Ransome, 1. 2, 3; .McCarn. 1 Mollmann. 1; Pearce, R., S. 9; Rickard, T. A., 11, 22; Ritter. 2; Sharwood. W. J., 1; Winslow, 1.

(lOld Hill on shoots described: Skewes, 3.

goldschmidtit*': Ilobbs, 1.

uneiss: Graton, L

granitic breccias: Stone. 7.

Cripple Creek. — Continued.

granite* analysis of: Clarke* F. W.,

granites: Clarke, F. W., 8; Graton, 1; Mathews, 1, 2; Rickard, T. A.,

granite gneiss: Clarke, F. W., 8.

hydrology: Cross and Penrose, 1; Lindgren and Ransome, 1, 3.

Independence mine: Mg. World, 6; Rickard, T. A., 29.

kaolin, analysis of: Cross and Pen- rose, 1; Rickard, T. A., 15.

krennerite: Chester, 2; Lindgren and Ransome, 3.

latite porphyry : Graton, 1.

latite phonolite: Clarke, F. W., 8.

lead: Rickard. T. A., 14; Cross and Penrose, 1.

lavenite: Graton, 1.

leasing: Burgess, 1.

limburgite: Stevens, E. A., 1.

manganese minerals: Cross and Penrose, 1; Lindgren and Ran- some. 1. 2, 3; U. S. G. S.

mills and milling: Argall, P., 16. 17. 18, 19; Clancy, 1; Dodge, 1; Henahen, 1; Koch, 1; Magenau, 1; Min. Ind. and Rept., 8; Miller. G. W.; Of, 1; Taylor, G. M., 1; Warwick, 5; Wolcott, 6.

minerals, analysis of: Clarke, F. W., 8, 9; Knight, F. C, 1; Ritter. 2; Schaller, 1.

minerals, characteristic: Graton,!.

minerals, new: Knight, F. C, 1.

mines, Ajax: Colbum, E. A., 1.

mines, El Paso: Zulch, 1.

mining, cost of: Bain. 4; Finlay. J. R.. 1, 3; Ingalls, 3.

mining, early: Rickard, T. A.. 6. mining, Independence mine: Lakes,

mining, labor troubles: Finch, 2.

mining, leasing system: Finch, 2; Finlay, J. R., 2.

mining, Portland mine: Fulton, 1.

mining, underground workings, ex- tent of: Lindgren and Ransome,

Index

Cripple Creek. — Continued.

mining, Victor .mine: Elder, 1.

mining: Arthur,!; Bancroft, 1; Col- lins, G. E., 3, 4, 5, 6; B. and M. J., 20, 23, 28, 33; Finch, 2; Forsyth. 1; Hazelhurst, 1; Herrick, 1; Hills, F., 1; Johnson, 1; Judson, 1; Lakes, 88, 142; Lindgren and Ransome, 3; Miller, G. W., 1; Mg. Inv., 2; Moore, 2; Rickard, T. A., 8, 22; Van Wagenen, H. R., 2; Winslow, 1 ; Wolcott, G. E., 4.

monchiquite, description and anal- ysis of: Clarke, F. W., 8; Graton,

nepheline syenite: Clarke, F. W., 9; Graton, 1.

Ophelia tunnel: Dinsmoor, 1.

ores, alteration of: Cross and Pen- rose, 1.

ores, analysis of: Baker, 1; Cross and Penrose, 1; Graton, 1; Smith, F. C, 1.

ore deposits, basaltic zones as guide to: Stevens, E. A., 2.

ore deposits, character and value of: Miller, G. W., 1.

ore deposits, compared with Custer County: Emmons, 23.

ore deposits, formation : Bancroft,

ore deposits, lodes: Rickard, T. A.,

ore deposits, occurrence: C'ross and Penrose, 1.

ore deposits, shoots: Lakes, 47; Skewes, 3.

ore deposits: Argall, P., t>; Ban- croft, 1, 7; Cross and Penrose, 1; Lakes, 11, 16, 18, 21, 30, 74, 214. 233, 243, 254; Lee, H. A., 9; Lind- gren, 7; Lindgren and Ransome, 1, 2; McCarn, 1; Pearce, R., 9; Penrose, 2; Rickard, T. A., 8, 26, 28; Schwarz, 3; Spurr, Garrey, and Ball, 1; Stevens, E. A., 2; Warwick, 2.

ore treatment, cyaniding: Baker, 1; Fulton, 2; Lakes, 70.

Cripple Creek. — Continued.

ore treatment: Argall, P., 9. 14, 15; Crows, 1; Croll. 1; Fulton, 1, 2; Greenawalt, 1; Headden. 10; Hoover, 2.

petzite: Lindgren and Ransomo, 3; Rickard, T. A., 16.

phonolite, analysis of: Clarke, F. \y., 9; Cross and Penrose, 1; (iraton, 1.

physiography: Cross and Penrose, 1; Lindgren and Ransome, 1, 3.

placer deposits: Cross and Pen- rose, 1; Lakes, 259; Lindgren and Ransome, 3.

Portland mine: Scates, 1.

Poverty Gulch mine: Henderson, C. W., 3.

production: Collins, G. E., 9; Cross and Penrose, 1; Day, 13; E. and M. J., 28, 33; Finch, 2; Hazel- hurst, 1; Hodges, 1; Lakes, 18; Lee, H. A., 9; Lindgren and Ran- some, 1, 3; Mg. Kept., 15, 21, 24; Mg. Sci. Press, 8; Roth well. 5, 6; Tonge, 4.

I)seudoniori)hs after sylvanito and krennerlte: Rickard, T. A.. 16.

quartz: Cross and Penrose, 1.

rhyolite: Craton, 1.

rocks, analyses ol: Clarke, F. W.,

8; Clarke and Hillebrand, 1;

Daly, 1: Hillebrand, 11; Graton,

1; Miller, G. W.. 1.

sampling: Wolcott, H.

schist: Grat(m, 1.

secondary enrichmenl : Bancroft, 1 ; Weed, 3.

silver deposits: Cross and Pen- rose, 1; Rickard, T. A., 14.

sodalite and nosean: Graton, 1. subterranean gases: Lindgren. :;. syenite, analysis of: Clarke, V. \V.,

8; Graton, 1. sylvanite: Lindgren and Ransome,

3; Palache, 1; Rickard, T. A., 16. telluridea, analysis of: Ihiilar. 1;

Rickaid. T. A.. 16.

Index

Cripple Creek. — Continued.

tellurides: Cross and Penrose, 1 ; Crows, 1 ; Hess, 1 ; Hillebrand and Allen, 1; Lindgren, 7; Lind- gren and Ransome, 3; Portland Metallurgical Society, 1.

titanite: Graton, 1.

trachydolerites, analysis: Clarke, F. W., 8; Graton, 1.

tunnel: Warwick, 3.

underground water: Lindgren and Ransome, 2, 3.

vein intersections: Ritter, 2; Underbill, 1.

vogesite, analysis of: Clarke, F.W., 8; Graton, 1.

volcano: Rickard, T. A., 15.

water problem: Lakes, 101.

zinc ores: Cross and Penrose, 1.

Crow Creek, Laramie beds: Stanton and Knowlton, 1. Little, Neocene: Dall and Harris, 1. paleontology, fossils described: Henderson, 8; White, 5, 6b.

Crustacea, Paleozoic: Vogdes, 1.

Cryolite, occurrence and metallurgy: Ohly, 2. production, 1893, 1894, 1898, 1901: Day, 8, 11, 14; Rothwell, 2, 3, 1911: Burchard, B. F., 8. Crystal Park, amazonstone: Henahen, 1; Lakes, 75. minerals from: Cross and Hille- brand, 4; Kunz, 2. Culebra axis: Stevenson, 8. Cunningham Guicli: Cross, Howe and

Ransome, 1. Current Creek, iron, meteoric: Head- den, 12. Custer County, Bassick and Bull Do- mingo mines: Lakes, 142; Mg. and Sci. Press, 12. charcoal at depth in mine: Charl- ton, 1. cerussite: Brinsmade, 1. geology, dynamic: Cross, 12; Em- mons, 23; Van Hise, 4. geology, economic: Emmons, 7. Geyser mine, analysis of water from: Clarke, F. W., 9.

Custer County. — Continued.

eruptive rocks: Cross, 12.

fluorspar: Burchard, E. F., 1.

gold: Emmons, 23.

iron: Emmons, 21.

Marion mine, zinc: Babbit, 1.

minerals, analyses: Clarke, F. W., 6 ; Eakins and Chatard, 1.

minerals: Cross, 14.

mines, Rosita and Silver Cliff: Bmmons, 24; Lakes, 55.

mines: Emmons, 23, 24; Lakes, 5; Lee, H. A., 9.

mineral production, mines de- scribed: Burchard, H. C, 1, 2, 3, 4; Munson, 1; Emmons, 23; Lee, H. A., 9; Mg. Rept, 18.

ores, analysis of: ESmmons, 23, 24.

physiography: Lee, H. A., 9.

reduction plants: Emmons, 23.

Rosita Hills, geology: Cross, 17.

Rosita - Silver Cliff. See Roslta- Sllver Cliff.

silver: Emmons, 23.

zinc, Marion mine: Babbit, 1.

Cut nails, production, 1899: Day, 12.

Danforth Hills. General: White, 4. Grand Hogback, and, coal deposits:

Gale, 3, 8. geology, dynamic: White, 24. map: Gale, 3; U. S. G. S. paleontology, fossils described:

White, 5, 6b. Davidson district, coal deposits: Em- mons, Cross, and Eldridge, 2. geology, dynamic: Ehnmons, Cross,

and Eldridge, 2. Dawson arkose: Richardson, 4. Deformation. See also faulting and

folding. General: Bechler, 2; Blow, 1;

Davis, W. M., 4; Emmons, 15, 20,

26 ; Endlich, F., 1, 2, 4, 7 ; King. 1 ;

Gannett, 9; Hayden, 6, 14, 19,

22; Hills, R. C, 14, 17; Holmes.

2, 6; Marvine, 1; Peale, 5, 7, 8.

13; Pirsson, 2; Powell, 1, 2, 3, 6;

Ransome, 4; Stevenson, 3, 7;

Stone, 7; White, 4; Williams,

S. G., 1.

Indbx

Deformation. — Continued.

Alma district: Patton, 10.

Anthracite - Crested Butte quad- rangle: Emmons, Cross, and Eld- ridge, 1.

Aguilar district: Lakes, 117.

Apishapa quadrangle: Stose, 1.

Archean disturbances: Emmons, 17; Hills, R. C, 17.

Archuleta County: Lee, H. A., 9.

Arkansas Valley: Darton, 13; Gil- bert, 5.

Aspen district, as related to min- ing: Lakes, 150.

Aspen district: Brunton, 2; Hen- rich, 2; Lakes, 2, 103; Newberry, 16; Spurr, 1.

Bear Creek area: E?mmons, W. H., 2; Emmons, Cross, and Eldridge,

Book Cliffs coal field: Lakes, 130. Boulder, coal field: Lakes, 159.

Boulder, mineral belt in Boulder and Gilpin counties: Spurr, Gar- rey, and Ball, 1.

Boulder, mining, as related to: Lakes, 150.

Boulder, oil field: Fenneman, 2, 3.

Boulder Valley region: Emmons, Cross, and EUdridge, 2.

Boulder district: Fenneman, 5; Lakes, 124; Lindgren, 6.

Breckenridge district: Lakes, 66.

Cambrian, crustal movements : Walcott, 1.

Canyons: Bross, 1.

Carboniferous movement, Denver Basin: Emmons, Cross, and Eld- ridge, 2.

Castle arch: Lee, W. T., 5.

Cenozoic disturbances: Hills, R. C, 17.

Clear Creek, veins: Lakes, 49.

Clear Creek: Underbill, 4.

Coal fields: Chauvenet, 10; Lakes,

coal, spontaneous combustion, effect on surrounding strata: Lakes, 180.

Colorado Plateau: Spurr, 2.

Deformation. — Continued.

Colorado Range : King, 1.

Colorado: Lakes, 201.

Crested Butte quadrangle: Em- mons, Cross, and Eldridge, 1.

Cretaceous, early, movement, Den- ver Basin: Emmons, Cross, and Eldridge, 2 ; Hills, R. C, 17.

Cretaceous-Tertiary unconformity. Aspen: Spurr, 1.

Cripple Creek, fissures: Weed, 2.

Cripple Creek: Cross and Penrose,

1; Lindgren and Ransome, 3;

Miller, G. W., 1; Stevens, 2;

Stone, 6; Van Hise, 4. Culebra axis: Stevenson, 8. Dakota at Golden: Patton, 6. Danforth Hills uplift: White, 24. Davidson section: Emmons, Cross,

and Eldridge, 2. Denver Basin, Green Mountain

section: Emmons, Cross, and

Eldridge, 2. Denver Basin: Eldridge, 2; Lakes,

Dike, to trace an invisible: Stone,

o. Durango coal field: Taff, 1. Durango quadrangle: Emmons, W.

H.. 1. Durango-Gallup coal field: Shaler

and Gardner, 1. Elk Mountains, mining, as related

to: Lakes, 150. Elk Mountains: Emmons, Cross,

and Eldridge, 1; Holmes, 1. Elmoro coal fields: Hills, R. C, 24. Engineer Mountain: Cross, 41. Florence oil field: Eldridge, 5;

Fenneman, 4. foothills, near Denver: Eldridge, 4. geological history: Hollister, 1. Georgetown quadrangle: Ball, S.

H!, Crosby, 4 ; Spurr and Garrey,

1: Spurr, Garrey, and Ball, 1. Golden: Emmons, Cross, and Eld- ridge, 2. Grand Mesa: Lee, W. T., 10. Grand River coal field: Lakes, 160.

Index

Deformation. — Continued.

Gunnison and Ouray districts:

Lakes, 6. Hahns Peak district: Draper, 1;

George and Crawford, 1.

Henry Mountains: Hills, R. C, 20. Idaho Springs: Spurr and Garrey,

Jurassic movement: Emmons, 17;

Emmons, Cross, and Eldridge,

2: Hills, R. C, 17. La Plata dome, origin of: Cross

and Spencer, 1. La Plata mountains: Cross and

Spencer, 1 : Hills, R. C, 20 ; Lee,

H. A., 9; Petre, 1. Laramie, alterations, causes effect- ing: Hills, R. C, 22. Laramie movement: Hills, R. C,

Las Animas and Huerfano coal

field: Hanes and Parsons 1. Leadville, downtown district: Em- mons and Irving, 1. Leadville, mining, as related to:

Lakes, 150. Leadville, ore deposits: Weunsch,

Leadville, Yankee Hill: Shedd, 1. Leadville: Harker, 1; Freeland, 1;

Lakes, 196; IVIiller, G. W., 1;

Spurr, Garrey, and Ball, 1. London fault: Patton, 10. Louisville coal field: Lakes, 6. Manitou embayment: Crosby, 3. Mesozoic disturbances: Emmons.

17; Hills, R. C, 17. mid-Cretaceous movement : Em- mons, Cross, and Eldridge, 2. Monarcli-Tomichi mining district:

Crawford, 4. Mosquito Range, London fault:

Ikes, 85. Mosquito Range: Emmons, 9. Mosquito Range, Tenmile district:

Emmons, 27. Needle Mountains: Cross, HOwe.

Irving, and Emmons, 1; Cross,

Nepesta quadrangle: Fisher, 1.

Deformation. — Continued.

northwestern Colorado: Gale, 3; Hewitt, 1 ; White, 26.

Ordovician time, crustal move- ments: Walcott, 1.

Organic matter in mines, veins and ore deposits: Lakes, 194.

Orographic movements: Elmmons, 17; Hills, 17.

Ouray, Camp Bird mine: Titcomb,

Ouray, unconformity: Cross and Howe, 1.

Ouray: Cross, Howe, and Irving, 1; Irving, 2; Ikes, 6, 181; Ran- some, 4.

overturns, Denver Basin: Hender- son, J., 1.

Paleozoic disturbances: Emmons, 17; Hills, R. C, 17.

Paleozoic movement, late: Em- mons, 17.

parks: Lakes, 5.

Park County: Lee, H. A., 9; Sadt- ler, 1.

Perry Park syncline: Lee, W. T., 5; Kruger, Hamilton, and En- rique, 1.

Pitkin County: Lee, H. A.. 9.

Plomo: Gunther, 1.

Plum Creek, Denver Basin: Em- mons, Cross, and Eldridge, 2.

post-Arapahoe movement : Km- mons. Cross, and EHdridge, 2.

post-Bridger movement: Hills, R.

post-Carboniferous movement: Hills, R. C, 17.

post-Cretaceous movement: Em- mons, 17.

post-Denver movement: Emmons. Cross, and Eldridge, 2.

post-Eocene movement: Hills, R.

post-Iramie movement: Emmons, Cross, and Eldridge, 2.

post-Miocene movement: Hills, R. C, 17.

l)ost-Paleozoic movement: Hills, R. C, 17.

iMn:x

:m

Deformation. — Continued.

post-Pliocene movement: Hills, R.

C, 17. pre-Cambrian : Walcott, 1.

pre-Cretaceous, Aspen: Spurr, 1.

Quaternary movement: Hills, R. C, 17.

Ralston section, Denver Basin: Emmons, Cross, and Eldridge, 2.

Raton Mountains: Hills, R. C, 20,

Rico dome: Cross and Ransome, 1.

Rico, fissure system, Enteri)rise mine: Van Hise, 4.

Rico, laccolithic centers of ernif- tions, compared with: Cross and Spencer, 2.

Rico, mining, related to: Lakes,

Rico: Cross and Ransome, 1 ; Cross and Spencer, 1; Farish, 3; Ran- some, 2; Rickard, T. A., 7.

Rio Blanco oil field: Gale, 5.

Rock Creek district: Lakes, 6.

Rocky Mountains, age of: Peale, 10; Stevenson, 4.

Rocky mountains, movements in: Am. GeoL, 2; Emmons, 17; Hills, 17; King, 1.

Rocky mountains: Lakes, 175.

Rosita district: Wulsten, 1.

Routt County: Parsons and Lid- dell. L

Sangre de Cristo Mountains: Hills, R. C, 20.

San Juan, fissure system: Ran- some, 1.

San Juan, sedimentary series: Read, 4.

San Juan, Treasure Mountain: Purington, 8.

San Juan, zones of weakness: Spurr, Garrey, and Ball, 1.

San Juan: Comstock, T. B., 7; Hills, R. C, 20; Howe, 1; Lee, H. A., 9; Rickard, T. A., 23; Snedaker, 1.

San Miguel County: Lee, H. A., 9.

Silver Plume mining district: Spurr, Garrey, and Ball, 1.

Deformation. — Continued.

Silverton: Cross, 32; Cross, Howe,

and Ransome, 1. southeastern Colorado: Gilbert, 6. South Park: Lakes, 115. southwestern Colorado: Comstock,

Spanish Peaks: Hills, R. C, 9, 20,

25; Lakes, 156; Savage, 1. Summit County: Mg. Ind., 5. Teller County, mining district:

Rickard, T. A., 22. Telluride quadrangle: Cross and

Purington, 1; Purington, 2. Tomichi-Monarch mining district:

Crawford, 4. Two Butte uplift: Stanton, 3. Uinta fold: White, 24. Uinta Range: White, 26. uplift, eastern: Emmons, 9. uplift, western: Emmons, 9. Walsenburg: Hills, R. C, 15. White River Plateau: Hills, 20. Yampa coal field: Fenneman and

Gale. 2.

Delagua, coal mine explosion: Duck, 1.

Del Norte:

General: £}ndlich, 4.

hydrology: Newell, 6.

rhyolitic vitrophyre: Clarke, F. W.,

Delta County, coal: Headden, 8; Wood- ruff, E. G., 1. gypsum: 'Sieben thai, 1. map: Clason Map Co. minerals described: Headden, 6. mines described: Henderson, C.

W., 4. radium bearing springs: Headden,

Dtnver, altitude of: Howe, H. A., 1. artesian wells: Cannon, 10; Chau-

venet, 2; Chisholm, 1; Cross, 3.

22; Darton, 9; Hills, R. C, 18;

Strong, 1; van Diest, 3, 11. Cretaceous section: Stanton, 2. geology: Cannon, 2, 10; Hayden, 6. infusorial earth: Headden, 2. irrigation district, map: Clason

Map Co.

Indbx

Denver. — Continued.

map: Clason Map Co.

mineral water, analysis: Clarke, F. W.. 9.

paleontology, aboriginal remains: Cannon, 4.

paleontology, dinosauria: Cannon,

soda near: Wilson, J. S., 1.

South Platte Valley, and, map: Clason Map Co.

stratigraphic and structural fea- tures: Eldridge, 2.

Denver-Greeley district, map: Cla- son Map Co.

Denver Basin:

General: Cross, 22; Emmons, Cross and Eldridge, 2.

building stones: Emmons, Cross, and Eldridge, 2.

brick clay, production: Emmons, Cross, and Eldridge, 2.

coal, analysis of: Emmons, Cross, and Eldridge, 2; Lakes, 6.

coal: Cannon, 10; Darton, 9; Eld- ridge, 2; Emmons, Cross, and Eldridge, 2; Griswold, C. J., 1; Hayden, 19; Lakes, 6; Martin, 2.

coal, production 1864-1894: Em- mons, Cross, and Eldridge, 2.

Denver formation: Davis, W. M., 5; Emmons, Cross and Eldridge,

economic products: Lakes, 165.

fire clay, analysis: Etoimons, Cross, and Eldridge, 2.

form and extent: Cross, 3.

geology, dynamic: Eldridge, 2; Emmons, Cross, and Eldridge, 2 ; Henderson, J., 1; Lakes, 6.

map: Emmons, Cross, and Eld- ridge, 2, U. S. G. S.; Williamson and HaflPner, 3, 4.

Niobrara dolomite, analysis of: Clarke, F. W., 9. .

oil deposits: More, Wm., 1; Ohly,

overturns in: Henderson, J., 1. paleontology, fossil flora: Em- mons, Cross, and Eldridge, 2.

Denver Basin. — Continued.

paleontology: Cannon, 11; Lee, W. T., 5; Marsh, 30; Emmons, Cross, and Eldridge, 2.

physiography: Emmons, Cross, and ESldridge, 2; Gannett, 19.

placer gold: ESmmons, Cross, and Eldridge, 2.

Quaternary : Cannon, 2.

rocks, analysis of: Clarke, F. W., 9; Clarke and Hillebrand, 1.

soil, loess: Clarke, F. W., 9; Em- mons, Cross, and Eldridge, 2.

wells, analysis of water: Eakins, 5 ; Emmons, Cross, and Eldridge, 2; Foster, E. L., 1.

wells: Darton, 9; Emmons, Cross, and Eldridge, 2.

Denver County, map: Clason Map Co.

Denver-Greeiey district, map: Clason Map Co.

Devii'e Head iountain, allanite and gadolinite: Eakins, 1. .

manganite: Smith, W. B., 2.

minerals from: Cross and Hille- brand, 4.

Devonian. Stratigraphic, See li9l of formations, page 479.

General: Cross, 33; Endlich, 1, 3, 5; Hay, O. P., 2; Holllster, 1; Lakes, 5; Peale, 7; Spencer, A. C, 2.

Devon Point: Cross, 33.

Elbert: Cross, 33, 41; Cross and Howe, 1; Cross, Howe, and Irv- ing, 1; Cross, Howe, Irving, and Emmons, 1; Howe, 2; Irving, 2.

limestone, San Juan: Read, 4.

map: Willis, 2.

ore deposits in: Rickard, T. A., 28.

quartzite, Rico Mountains: Cross and Spencer, 2.

Rico Mountains, quartzite: Cross and Spencer, 2.

San Juan: Comstock, 1, 7; Read, 4.

southwestern Colorado: Spencer, A. C, 2; Spencer and Girty, 1; upper: Ebdlich, 3.

Index

Devonian. — Continued. Palecmtology.

General : Clarke, J. M., 2; Crawford, 3, 4; Cross, 33; Endlich, 1, 3, 5; Girty, 1, 2; Hay, O. P., 2; Spen- cer, A. C, 2; Spencer and Girty, 1; White, 16.

Brachiopoda : Schuchert, 1.

Bryozoa: Nickles and Bassler, 1.

Cladodus (C. formosus) : Hay, O. P., 3.

correlation: Williams, H. S., 3.

Elbert: Cross, 33; Cross, Howe, and Irving,!; Cross and Howe, 1.

Engineer Mountain: Cross, 41.

fish remains: Eastman, 1.

invertebrates: Cross, Howe, and Irving, 1.

Needle Mountains: Cross, Howe, Irving and Emmons, 1.

Ouray limestone: Girty,!; Kindle,

Ouray: Cross, Howe, and Irving, 1.

Rico: Cross and Ransome, 1.

Devonian-Carboniferous. See Carboni- ferous-Devonian.

Devonian - lissiesippian, Monarch- Tomichi district: Crawford, 4.

Diamond field: Mg. and Sci. Press, 2, 3. Dilion, placer mining: Lakes, 249. Diorite: Merrill, 4. Disappointment, ore deposits: Hille-

brand and Ransome, 1. Dolomite: Merrill, 4. Dolores, Engineer Mountain: Cross, 41. Dolores Canyon: Holmes, 6. Dolores County. Bee also Rico, map: Fischer, E., 1. mineral production: Burchard, H. C, 2, 3, 4; Henderson, C. W., 4; Lee, H. A., 9 ; Mg. and Sci. Press, 11; Mg. Rept., 18. ore deposits: Ihlseng, 1; Lee, H. A., 9; Rickard, T. A., 28; Weed, physiography: Cross and Ransome, 1 ; Cross and Spencer, 1 ; Wal- cott, 7. uranium in: Lee, H. A.. 7. Dolores Peak: Endlich, 7.

Dolores River, hydrology: Newell, 7, 14; Peale, 8. San Miguel river, and, map: Peale,

Dotsero, volcano near: Lakes, 7.

Doughty Springs, radlum-bearlng springs: Headden, 5.

Douglas County, allanlte and gadoll-

nlte: Eaklns, 1. building stone: Lakes, 94. geologry, economic: Emmons, 7. minerals, analysis of: Clarke, F.

W., 6; Hillebrand, 4. production: Henderson, C. W., 4.

Douglas Creek, erosion: EZndllch, 8.

Drainage system, Georgetown district:

Crosby, 4. La Plata Mountains: Cross and

Spencer, 1. Leadville, affected by glaciatlon:

Capps and Leffingwell, 1. Mineral Creek: Cross and Howe, 1. Nepesta quadrangle: Fisher, 1. northwestern Colorado: Hewett, 1. Rico Mountains: Cross and

Spencer, 2. Rio Grande: Cross and Howe, 1.

Durango, coal, analyses: Gardner, 1;

Ikes, 6; 223; Taff, 1. coal field, map: Taff, 1. coke: Weeks, J. D., 3. geology, dynamic: Emmons, W. H.,

1 ; Taff, 1. gold: Emmons, W. H., 1. map: U. S. G. S. mine described: E)mmons, W. H.,

minerals described: Lakes, 174. ore deposits: EJmmons, W. H., 1. paleontology: Cross, 18; Eastman,

physiography: Taff, 1. silver: Emmons, W. H., 1. volcanic ash near: Woolsey, 1.

Durango-Gallup district, clay deposits,

analysis: Shaler and Gardner, 1.

coal field, map : Schrader, 1 ; Shaler

and Gardner. 1 ; Shaler, 1 ; Taff,

:570

Index

Durango-Mesa Verde field, coal, analy- sis: Shaler, 2.

Durango-Monero coal field: Gardner, 1.

Dynamic and structural geology. See anticlinal structure, batholiths, caves, chonoliths, cone-in-cone, deformation, earthquakes, ero- sion, faulting, folding, glaciation, igneous intrusions, jointing, landslides, magmatic differentia- tion, nietaniorphism, ore forma- tion, orogeny, sedimentation, vulcanism, weathering.

Eagle County. See also Red Cliff.

Battle Mountain, mines: E. and

M. J., 19; Nicholson, H. H., 1;

Olcutt, 1. geology and mines: Lee, H. A., 9;

Tilden, 1. gypsum: Uurchard, E. F., 5; Hena-

hen, 1. iron ore. Red Cliff: Snedaker, 2. limestone: Burchard, E. F., 8. manganese: Harder, 4. minerals, analysis of: Clarke, F.

W., 6. mines, production: Burchard, H.

C, 4; Henderson. C. W., 4; Mg.

Rept., 18. ore deposits: Lakes, 143: Lee, H.

A., a*.

Red Cliff, ore deposits: Snedaker,

2; Tilden, 1. volcanic craters: van Diest, 9.

Eagle River: Bechler, 1. gold: Peale. 7. map: Peale, 7.

Eagle River Mountains: Bechler, 1.

Eagle River Valley, geology: Peale, 7.

Earthquakes: recent earth move- ments: Lakes, 120. San Juan, in: Lay, 1.

East Beaver, copiwr production: Mg.

Rept., 40. Eastern Colorado, artesian wells: Dar-

ton, 9, 10, 13; Emmons, Cross,

and Eldridge, 2; Gilbert, 5; Hay,

R.. 2. coal: Hollister. 1: I>akes, 2i:3.

Eastern Colorado. — Continued.

map: Bradley, 1; Darton, 9; Hay- den, 19; Wheeler, G. M., 1. oil fields: Lakes, 195a. physiography: Hay, R.. 2. sandstone: Foster, Wm., 1.

Eastern slope: Marvine, 1.

Echinodermata, Cretaceous: Cragin, 2. Mesozoic: Clark, W. B., 2.

Ecbinoidea, Cretaceous: Clark, W. B.,

la. Economic (general).

General: Emmons, 15; Emmons

and Hayes, 1; Endlich, 1. 3, 6;

Fossett, 1; Hayden, 25, 26; Les-

quereux, Z; Loew, 2; Marshall,

W. L., 3; Newberry, 3; Peale, 8;

Stevenson, 3. briquetting, bibliography: Mills,

J . E. , 1 .

Colorado Fuel and Iron Company, EHmoro: Stutz, 1.

Colorado Fuel and Iron Company, equipment and work: Bancroft, 5; Lewis, 1.

economic products, bibliography of: Emmons and Eckel, 1, 2; Emmons and Hayes, 3; Hayes and Lindgren, 1.

ferric sulphate in mine waters, action on metals: Jones, L. J. W., 1.

fissure veins, origin: Emmons, 13.

fuel, fire wood, Nepesta quad- rangle: Fisher, 1.

fuel resources: Lakes, 8.

fuel testing, bibliography: Bur- rows, 1.

geological work, 1901: Walcott, 9.

mineral belt, Georgetown quad- rangle: Spurr, Garrey. and Ball,

mineral dei>osition, Gilpin, Lead- ville, Gunnison, Custer, and San Juan Counties, age of: Lakes, 5.

minerals, occurrence and uses: Hollister, 1.

mineral resources, use and non- use of: Guiterman, 3.

mineral veins: Comstock, T. B., 7.

Index

:Ml

Economic. — Continued.

mineralogical mistake: van Diest,

sulphide belt : Ores and Metals, 1 ;

Ritter, 8. veins and minerals: Mg. and Sci.

Press, 1. veins of southwestern Colorado:

Comstock, T. B., 6. vein phenomena, Boulder County:

Parish, 1. vein phenomena: Foster, E. L., 1. Elbert County, map: Clason Map Co.

Eldora. See also Boulder County, mines described: Mg. Rept, 7. ore deposits: Rickard, T. A., 28. Elk Creek, ore deposits, head of North

Fork: Cross, Howe, and Irving,

Elk Mountains:

General: Emmons, 7; Hayden, 14;

Peale, 5. building stones : Emmons, Cross,

and Eldridge, 1. clay: Bmmons, Cross, and Eld- ridge, 1. coal, contact- metamorphism :

Stevenson, 14. coal: Emmons, Cross, and Eld- ridge, 1. eruptive rocks: Peale, 9. geology, dynamic: Emmons, Cross,

and Eldridge, 1 ; Holmes, 1 ;

Lakes, 143, 150. geology, northwestern portion :

Holmes, 1. geology: Cross, 23; Hayden, 19. hydrology: Holmes, 1. iron, bog ore: Emmons, Cross, and

Eldridge, 1. iron ore: Snedaker, 2. limestones: Emmons. Cross, and

Eldridge. 1. map: Hayden, 19; Peale, 7. minerals, analysis of: Clarke, F.

W., 6. mines, production, 1880: Burchard,

H. C, 1. ore deposits: Elmmons, Cross, and

Eldridge, 1 ; Lakes, 2.

Elk Mountains. — Continued.

physiography: £}mmons, Cross,

and Eldridge, 1. rare minerals from: Emmons,

Cross, and EJldridge, 1. rocks, analysis of: Clarke and

Hillebrand, 1. structure of: Suess, 1.

Elk Range, map: Holmes, 1.

Elkhead Mountains.

General: Draper, 2; Hague and

Emmons, 1. basalt and trachyte: Zirkel; 1;

Hague and Emmons, 1. basaltic hills : Hague and Emmons,

Cretaceous formations : Hague and

Emmons, 1. drainage: Hague and Emmons, 1. Hahns (Hantz) Peak: Hague and

Emmons, 1. Rampart: Hague and Emmons, 1. rocks, analyses: Clarke, F. W., 8;

Hague and Emmons, 1. trachyte region: Hague and Em- mons, 1. Elkton mine: Mg. Rept., 19. El Late Mountain, geology of: Cross,

Eimoro, artesian wells: Hills, R. C, 24. basalt: Hills, R. C. 24. cement limestone: Hills, R. C, 24. coal: Hills, R, C, 24, 26. coke, analysis of: Hills, R. C, 24;

Weeks, J. D., 3. fire clay: Hills, R. C, 24. geology, dynamic: Hills, R. C, 24. iron ore: Hills, R. C, 24. lamprophyre: Hills, R. C, 24. limestone: Hills, R. C, 24. map: Hills, R. C, 24; U. S. G. S. petroleum: Hills, R. C, 24. physiography: Hills, R. C, 24. sandstone: Hills, R. C, 24. El Paso County'. See also Colorado

Springs and Manitou. arfvedsonite, analysis of: Endlich,

astrophyllite, with analysis! Eak-

ins, 8; Endlich, 6.

Index

El Paso County. — Continued.

Calhan, clay from: Richardson, 3.

coal: Ashley and Fisher, 1; Camp- bell, M. R., 5; Lakes, 58.

geology, economic: Emmons, 7.

geology, Turkey Creek: Stone, G. H., 4.

Iron ore: Chauvenet, 3.

limestone: Burchard, E}. F., 8.

map: Clason Map Co.

meteorites: Preston, 2.

minerals: Emmons, 7. . phonolite: Cross, 10.

oil: Ores and Metals, 5.

rocks, analysis of: Hillebrand, 11.

rutile and danalite: Genth, 1; Schaller. W. T., 3.

sandstone: Foster, E. L., 1.

Turkey Creek, geology of: Stone,

uranium in: Lee, H. A., 7.

Empire mining district: Spurr, Garrey, and Ball, 1.

Engineer lountain, geology and ore deposits: Cross, 41.

map: Cross, 41; Cross, Howe, Irving, and Emmons, 1.

ore deposits: Rickard, T. A., 28.

paleontology, Devonian fossils: Eastman, 1.

paleontology: Cross, 41.

rocks, analysis of: Clarke, F. W.,

rocks described: Cross, 42. Eocene. See also under list of forma- tions described. Stratigraphic.

General: Endlich, 5; Hayden, 19; Marvlne, 1; Peale, 7.

Book Cliffs: Richardson, 1.

Huerfano Lake basin: Hills, R. C, 19, 28; Weller, 1.

lake beds, San Juan: Comstock, 7.

lake basins: Marsh, 2.

lower: Hayden, 19.

North America, west of 100th me- ridian: Smith, J. H., 1.

Oligocene, map: Willis, 2.

Silver Cliff: Cross, 27.

Tertiary: King, 1.

Eoce ne. — Continued.

Paleontology, General: Clarke, W. B., 1; Cockerell, 20d; Cope, 6, 15, 17; King, 1; Lesquereux, 4; Peale, 7.

Amyzon beds : Clark, W. B., 1.

Bear River group: Cope, 16, 19.

Bridger group: Clark, W. B., 1;

Cope, 54, 60; White, 1, 3. Fort Union: Cope, 15, 19; Knowl-

ton, 1 ; White, 1. Green River group: Clark, W. B.,

1; Peale, 12; White, 1, 3, 17. Huerfano beds: Clark, W. B., 1;

Cragin, 1; Hills, 13; Osbom, 1.

2, 4. lake basins: Marsh, 2. lower: Osborn, 4; Peale, 12. Monument Creek: Dall and Harris,

1; Darton, 12, 13; Lee, W. T., 5. Puerco beds: Clark, W. B., 1;

Cope, 54. Uinta fauna: Cope, 60; King, 1. Wasatch: Cope, 54, 60; Endlich, 5;

Peale, 12; White, 1, 3. Wind River: White, 1.

Eozoic rocks: Hunt, 3.

Epidote: Sterrett, 2.

Erie, coal: Potter, W. B., 1.

Puritan mine: Watson, J., 1.

Erosion.

General: Bechler, 2; Davis, W. M., 4; Endlich, F. M., 1, 4. 5; Hayden, 6, ,12, 14, 18, 19, 22; Holmes, 6; Marvine, 1; New- berry, 3; Peale, 7; Powell, 1, 3; Russell, 1; Stevenson, 3; White,

Arkansas Valley: Darton, 13; Em- mons, 9; Gilbert, 5.

Aspen district: Spurr, 1.

Base leveling of the Cretaceous during Tertiary age: Upham, 1.

Chalk Bluffs and Pawnee Buttes: Henderson, J., 7.

cliff erosion, Front Range: Fenne- man, 6.

Cripple Creek district: Lindgren and Ransome, 3.

Index

Erosion. — Continued.

Denver district, eroslonal epoch: Cannon, 2, 10; Emmons, Cross, and Eldrldge, 2.

Elk Range: Holmes, 1. eruptive rocks, late: Peale, 9. fluvial, Georgetown: Crosby, 4. forms, eastern Colorado: Hay den,

Front Range, cliff erosion: Fenne-

man, 6. Garden of the Gods: Minerals, 1. Georgetown, fluvial: Crosby, 4. glacial, Leadville: Capps and

Lefilngwell, 1. glacial. Mosquito Range: Emmons,

Glacial Twin Lakes: Westgate, 1. Lake basins, by wind: Gilbert, 3. La Plata Mountains: Cross and

Spencer, 1. mesas of Boulder: Lee, W. T., 2. monuments, peculiar formations,

San Luis Park: Lakes, 102. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1. ore deposits, Summit County:

Merrick, 1. Pawnee Bluffs: Lakes, 112;

Henderson, J., 7. Pikes Peak district: Cross, 24;

Mathews, 2. Pitkin County: Lee, H. A., 9. Plateau province: Gilbert, 2. polished pebbles: George, 1. products of erosion: Endlich, 8. Pueblo: Gilbert, 7. Red Mountain: Kedzie, 1. Rico quadrangle: Cross and Ran-

some, 1 ; Cross and Spencer, 2. Rio Grande, headwaters of: Pat- ton, 2. Rocky Mountains: Emmons, 17. Roslta Hills: Cross, 17. Rosita and Silver Cliff: Emmons,

Routt County: Parsons and Lid- dell, 1. sand: Gilbert, 1. Sangre de Cristo Range: Bagg, 2.

Erosion. — Continued.

San Juan Mountains, interglaclal:

Howe and Cross, 1. San Miguel County: Lee, H. A., 9. stream. Mosquito Range: Bmmons,

subaerial versus marine: Crosby,

Telluride quadrangle: Crops and

Purington, 1. Tertiary, base leveling: Upham, 1. Unaweep Canyon: Gannett, H., 9.

Escalante Hills: Hague and Emmons, 1; King, 1; Powell, 1.

Estes Park.

General: Bechler, 1; Hague and

Emmons, 1. glaciation: Mills, Enos, 1, 2, 3. water, analysis of: I-iee, H. A., 9.

Eureka, zinc treatment mill: Prosser,

Evergreen, copper: Mg. Rept., 40;

Ritter, 4, 5. Fair Glacier: Henderson, J., 15. Fairplay.

Oeneral: Endlich, 1; Peale, 6. geology, economic: Endlich, 1;

Peale, 6. paleontology, Triassic insects:

Scudder, 19. placers: Lakes, 21, 81. rocks, carbonate, analysis of: Clarke and Hillebrand, 1. Falrview, micaceous granite: Clarke,

F. W., 8. Fall Creelt, carnotite: Fleck and Hal-

dano, 2; Hess, 3. Fall River district, Alice mine: Her-

rick, 3. Faulting.

Oeneral: Lakes, 136, 155; Wash-

burne, 3. Alma, Mosquito Gulch fault: Pat- ton, 10. Alma, London fault: Patton, 10. Apishapa quadrangle: Stose, 1. Creede: Emmons and Larsen, 1. Dakota fire clay beds, fault planes:

Patton, 6. Denver Basin: Eldrldge, 2.

:J74

Index

Faulting. — Continued.

Durango-Moncro coal field, dip and faults: Gardner, J. H., 1.

Georgetown, nature of fault move- ments: Spurr, Garrey, and Ball,

Gunnison: Hill. J. M., 1.

Leadville: Argall, 1; Emmons, 9.

London fault: Pat ton, 10.

Monarch-Garfleld: Crawford, 3.

Monarch-Toniichi: Crawford, 4.

Mosquito Range, Ix)ndon fault; Lakes, 8.: Patton, XO.

northern Colorado: Henderson, J.,

northwestern coal fields: Gale, 7,

Ouray quadrangle: Cross, Howe,

and Irving, 1.

San .Tuan: Howe, 2.

Tomichi-Monarch: Crawford, 4.

rte Pass, great fault, accompany- ing sandstone dikes: Crosby, 2.

Ferromanganese: Harder, 1.

production, 1903-1904: Day, 16, 17—1907: Thom, 2.

Fire brick, production 1888: Day. 4— 1893: Roth well. 2.

Fire clay.

General: Bailar. 3; Hague, 1;

Lakes, 51, 165, 205; Ries, 1. Apishapa quadrangle: Stose, G. W.,

Boulder County: Mg. Rept., 33. Denver Basin : Emmons, Cross, and

Eldridge. 2. Elmoro quadrangle: Hills, R. C,

Golden: Am. Jour. Mg., 4; Darton.

9; Patton, 6; Ward, W. S., 1. Nepesta quadrangle: Fisher, 1. production 1885-1886: Day. 1, 2—

1901: Struthers, 2. producer, rank as a: Wheeler, H.

A., 1. Pueblo quadrangle: Gilbert, 7. Walsenburg: Hills. R. C, 16. Fishes, Canon City: Clarke, J. M., 1;

Darton, 14; Walcott, 3, 3a, 5. Cretaceous: Cope, 40.

Fishes. — Continued.

Devonian : Eastman, 1 ; Hay, 2. Elbert: Cross, 33. La Plata formation: Cross and Spencer, 1.

oldest known remains: Am. Geol.,

Ordoviclan: Cope, 71, 72. Paleozoic: Vaillant, 1. Tertiary, South Park: Cope. 21, 40. Tertiary: Cope. 2, 4, 20. Trenton: Am. Geo!., 1; Walcott, 3.

Flint, chalcedony: Lakes, 171.

pebbles, production 1905: Day, 18.

Florence. See also Fremont County. cement plant: Rennell, 1.

gas : Weeks, J. D., 6.

geology, dynamic: Eldridge, 5;

Fenneman, 4; Washburne, 2. mills described: Min. Ind. and

Rept, 8.

oil deposits: Day, 19, 22; Eldridge, 5; Emmons. 20; Fenneman, 4; Hall, C. L., 1; Lakes, 6, 8, 86, 124, 195a, 241; Mg. Investor, 3; New- berry, 11, 15; Ohly, 9; Wash- burne, 2; Weeks, J. D.. 2. 4; Youmans, 1.

oil production, 1909: Day, 20.

paleontology: HoUick, 1.

physiography: Eldridge. 5. resources: W. P. H., 1.

Floresta (Ruby), coal: Emmons, Cross, and Eldridge. 1; Hosea, 6; Lee. W. T., 13.

Florida River, hydrography: Newell,14.

Florissant.

Oeneral: Buckton,!; Cope, 34; Rol- lick, 4; Kirkaldy, 1; Newberry, 5b.

amazonstone: Sterrett, 3.

geology: Peale, 5; Heilprin, 1.

map: Scudder, 9; Cross, 24.

minerals, analysis of : Clarke, F. W.,

minerals: Cross and Hillebrand, 4; Hidden, W. E., 1, 2.

Indkx

Florissant. — Continued.

paleobotany, fossil flora: Britton and Hollick, 1; Cockerell, 1, 6, 8,

25, 32, 33, 34, 44, 46, 56, 58, 59, 61, 62; Hollick, 3, 4; Kirchner, 1; Warder, 1.

paleobotany, fossil forest: Heil* prin, A., 1 ; Ijakes. 75.

paleobotany, fossil grass: Brues, C. T., 2.

paleontology, insects: Scudder, 9.

paleontology, fossil insects: Brues, C. T.. 1, 3, 4, 5, 6; Cockerell, 2, 4, 5, 6, 7, 10, 11, 14, 15, 16, 18, 19, 19a, 20a, 20b, 20c, 20d, 21, 22. 24.

26, 27, 28, 29. 30, 31, 33, 36, 37, 38. 39, 40, 41, 42. 43, 47. 48. 49, 51, 52, 53, 54, 55, 60; Rohwer, 1, 2, 3, 4, 5, 6, 7; Scudder, 9, 10, 20, 24, 26.

27, 28, 30, 31, 34, 35, 36; Sutton. 1; Wheeler, W. M., 1, 2.

paleontology. fossil mollusca: Cockerell. 3, 12, 35.

paleontology: Allen, J. A., 2; Cock- erell, 6, 17; Cope, 40; Lesque- reux, 16; Scudder, 5, 7, 11, 12, 13, 14. 15, 20, 27, 28, 29. 34. 35. 37. 38. 39, 41; Wickhara, 1. 2. 3.

phenacite: Hidden, 2; Penfield. 1.

physiography: Henderson. J., 6.

Tertiary lake basin: Henderson. J., 6; Scudder. 10. 15. 18. 27.

tufa: Wadsworth, 1. Fluorspar, production 1893-1894: Roth- well, 2, 3—1899, 1905: Day. 12. 18—1906: Ingalls. 5; Thorn, 1— 1907: Thorn, 2—1909: Burchard. E. F., 4—1910: Fay, 1—1911: Burchard, E. F.. 8; Of. 1; Parker, E. W., 7.

Folding, coal measures, southeastern Colorado: van Diest, 10.

Elk range: Holmes. 1.

Leadville: Bulkley, 1; Emmons, 2; Shedd, 1.

Monarch-Garlield: Crawford, 3.

Monarch-Tom ichi: Crawford, 4.

northwestern coal fields: Gale, 7. 8.

Rabbit Ears: Grout, Worcester, and Henderson, 1.

Tomlchi-Monarch : Crawford, 4.

Uinta fold: White, 24.

Forest reserves, reports: Gannett, H..

Forestry, timber consumption: Gannett, H.. 16. timber line: Gannett, H., 18. wooded area: Gannett, H., 16.

Fort Coiiins, building stone: Merrill, 2. calcites, phosphorescent: Headden.

concretions: Lakes. 39. Cretaceous: White. 10. sandstone quarries: Merrill. 4.

Fort Coiiins quadrangle, map: V. S. G. S.

Fort Garland: Whoeler. 6. geology: Hawn. 1.

Fortieth Parallel area. Colorado.

General: Hague and Emmons, 1;

King. 1. see also: Archean. Conozoic geol- ogy, Fortieth Parallel area. Elk- head Mountains, (Jreen River Basin. Medicine Bow Range, Mesozoic (of) Fortieth Parallel area. North Park, Orography (of) Fortieth Parallel area. Paleozoic (of) Fortieth Parallel area. Pre- Cambrlan Topography, Volcanic rocks Fortieth Parallel area, Yampa River Valley.

Fortification Peak, basalt: Zirkel, 1.

Fossil Canyon, paleontology: Scudder,

Fossil Creek, paleontology: Henderson.

Fossil Ridge, geology: Henderson, J.. 8, 9.

paleontology: Henderson, J.. 8. 9. Fourmile, placer gold: Hoover. 3. Fowler, water, analysis of: Fisher. 1. Franceville, meteorite: Preston, 1. Fremont County. See also Canon City and Florence.

iieneraU Williams, S. G., 1.

bismuth: Ingalls, 8.

building stone: Lakes, 95; Merrill,

coal: Raymond. 9; Williams, S. G..

copper, map: Llndgren, 8, 9.

37G

Indbx

Fremont County. — Continued.

Gem mine, nickel deposits: Charl- ton, 2.

geology, economic : Emmons, 7.

iron, magnetite: Rolker, 1.

iron ores, analysis of: Clark, R. N., 1; Raymond, 7.

limestone: Burchard, E. F., 8.

marble, Twin Mountain: Lakes,

mines described, 1873: Raymond,

mines, production, 1881-3: Bur- chard, H. C, 2, 3, 4—1910: Hen- derson, C. W., 4.

nickel. Gem mine: Charlton, 2. oil fields: Ihlseng, 2; Lee, H. A., 9. See also Florence.

physiography: Lindgren, 8. precious stones : Sterrett, 2. Red Gulch, copper deposits: Lind- gren, 9. resources of: Lee, H. A., 9. sandstone quarries: Merrill, 4.

Front Range.

General : Bechler, 1; Emmons, 20;

Hague and Emmons, 1 ; Hills, R.

C, 17; Marvine, 1; Suess, 1;

Youmans, 2. gas: Lakes, 185. geology, dynamic: Fenneman, 6;

Lakes, 185. geology, relation to topography:

Davis, W. M., 10, 11. geology, surface features: Hayden,

hydrology: Lakes, 185. Jura-Trias: Hallowell, 1. map : Cannon, 9. Morrison: Lee, W. T., 6. oil: Lakes, 185. pre-Cambrian: Van Hise, 1, 2.

Frying Pan, map: Boehmer, Ic.

Fuller's earth, production, 1897, 1899, 1901, 1904: Day. 10, 12, 14, 17— 1907: Thorn, 2; Middleton, 3— 1911: Parker, E. W., 7.

Gadollnite, production, 1904: Day, 17.

Garden Park, Ordovician exposures in: Darton, 14. paleontology, fossil described: Gil- more, 1.

Garfield County, coal deposits, Newcas- tle: Ashley and Fisher, 1.

coal deposits: Campbell, Hi, R., 5; Gale, 3; Hosea, 2; Lord, 2.

copper : Mg. Kept., 40.

Carboniferous rocks, analysis: Clarke and Hillebrand, 1.

mineral production, 1910: Hender- son, C. W., 4.

Garnet, General: Henahen, 1; Sterrett,

- 2, 7.

production: Day, 7; Thorn, 1. Gas, General: Bailar, 3; George, 5; Henahen, 1; Lakes, 8, 106, 209; Nat. Conservation Commission, 1.

Boulder field: Curtis, H. H., 1; Day, 22; Fenneman, 5; George, 5; Hill, B., 1; van Diest, 7.

coke, production, 1902, 1903, 1905: Day, 15,16,18—1906,1907: Thorn, 1,2.

Florence: Day, 22; Weeks, J. D., 6.

Front Range: Lakes, 185.

Manitou: Strieby, Wm., 1.

Pitkin County: Hills, R. C, 7.

producer plants, list of: Femald, 2.

production, 1887, 1895, 1896, 1898, 1899, 1900: Day, 3, 9, 10, 11, 12, 13—1901-1902: Day, 14, 15; Struthers, 2, 3—1903, 1904, 1905: Day, 16, 17, 18—1906, 1907: Thorn, 1, 2—1911 : Parker, E. W., 7.

San Luis Valley: Siebenthal, 4.

tests for: Clark, R. N., 1.

water, tar, production, 1905: Day,

White River, .wells and springs: Lakes, 165, 188, 236. Gems. See precious stones. General, General: Agassiz, 1; Davis, W. M., 1; Dutton, 1; Emmons, 18; Geikie, 1; Hunt, 2, 3; Knee- land, 2; Marcou, J., 2; Newberry,

Collins, Arthur L., work of in state: Lawrence, B. B., 3.

Index

General. — Continued.

Geological Survey: Hayes, 1. great west: Hayden, 1, 3, 9, 10, 11,

history: Maynard, 1. illustrations, pictures: Hayden, 8,

Long, expedition, 1819-1820: Long,

mining law, summary : E. and M. J.,

2; Brownlee, 1. State Geological Survey: Finch, 3. State School of Mines, graduates,

1882-1892: Christy, 1. . State School of Mines, history:

Alderson, 2. State School of Mines: Richards,

1; Wadsworth, 2. taxation of mining property:

Brownlee, 1; Mg. Scl., 7.

Geological formations described. See list, page 479.

Georgetown, General: Endlich, 1; Hay- den, 6; Spurr, Garrey, and Ball,

adamellite gneiss: Spurr, Garrey, and Ball, 1.

alaskite porphyry: Spurr, Garrey, and Ball, 1.

alaskite quartz monzonite por- phyry: Spurr, Garrey, and Ball,

alkali syenite porphyry: Mg. Scl.,

auriferous-pyritic deposits: Spurr, Garrey, and Ball, 1.

biotite latite; Mg. Sci., 2; Spurr. Garrey, and Ball, 1.

biotite sillimanite schist: Spurr, Garrey, and Ball, 1.

bostonite: Mg. Sci., 2; Spurr, Gar- rey, and Ball, 1.

building stones: Merrill, 2; Spurr, Garrey, and Ball, 1.

conglomerates: Spurr and Garrey,

dacite: Spurr, Garrey, and Ball, 1.

diorite: Ball, S. H., 1; Spurr and Garrey, 1.

geology, economic: Hague, 1.

Georgetown. — Continued.

geology: Mg. Sci., 2; Ball, S. H., 1; Crosby, 4; Spurr and Garrey, 1.

glaciation: Lakes, 247.

gneiss: Ball, S. H., 1; Spurr and Garrey, 1.

gneissoid granite: Spurr, Garrey and Ball, 1.

gold deposits: Pearce, R., 12; Spurr and Garrey, 1 ; Spurr, Gar- rey and Ball, 1.

granites: Ball,l; Mg.Sci.,2; Spurr and Garrey, 1; Spurr, Garrey, and Ball, 1.

hanging valleys: Crosby, 4.

hornblende gneiss: Spurr, Garrey, and Ball, 1.

hornblendite: Spurr, Garrey, and Ball, 1.

hydrology: Crosby, 4; Spurr,

Garrey, and Ball, 1. ice in mine: Weiser, 1. Malm process: Rickard, F., '6. map: Spurr, Garrey, and Ball, 1;

U. S. G. S. minerals: Pearce, R., 2; Spurr,

Garrey, and Ball, 1. mines described: Miner, 1; Mg.

and Scl. Press, 5; Spurr, Garrey,

and Ball, 1. monzonite: Ball, S. H., 1. ore deposits, lodes and fissures:

Crosby, 4. ore deposits: Lakes, 220; Spurr

and Garrey, 1; Spurr, Garrey,

and Ball. 1; Rickard, T. A., 28. pegmatite: Ball, S. H., 1; Mg. Scl.,

2; Spurr and Garrey, 1. physiography: Ball, S. H., 1;

Crosby, 4; Spurr and Garrey, 1;

Spurr, Garrey, and Ball, 1. porphyritic biotite granite: Spurr,

Garrey, and Ball, 1. porphyry: Spurr and Garrey, 1. pre-Cambrlan rocks: Ball, S. H., 1. quartz diorite: Mg. Scl., 2; Spurr,

6arrey, and Ball, 1. quartz gneiss: Spurr, Garrey, and

Ball, 1.

:j7s

Georgetown. — Continued.

quartz monzonite gneiss: Mg. Sei.. 2; Spurr, Garrey, and Ball, 1.

rocks described: Daly, 1.

silver: Pearce, R., 12; Spurr and

Garrey, 1 ; Spurr, Garrey, and

Ban. 1.

silver-lead dei)osits: Spurr, Garrey, and Ball, 1.

underground waters, action of: Spurr, Garrey. and Ball, 1.

zinc, metallurgy of: Siebenthal, 6.

Geyser Basin, south westeim Colorado: Comstock, 4.

Gibson Gulch, ore deposits: Rickard. T. A., 28.

Gilpin County. General: Callbreath, 2: Endlich, 1, r>; I.indgron, 2.

arsenic and bismuth, associated with ore deposits: Rickard, F., 1.

bismuth: Ingalls, 8; Rickard, F., 1.

carbonic acid gas in veins: Col- lins, A. L., 2.

copper deposits: Bast in and Hill. 1 ; Ritter, 4, 5, 6.

enargite: Spencer, L. J., 1.

Evergreen, copper deposits: Bastin and Hill, 1 ; Ritter, 4, 5.

geology, dynamic: Rickard, F,, 1.

geology, economic: Emmons, 7: Fossett, F., I.

gold deposits: Collins, A. L., 1; Collins, G. E., 1 ; Curie, 1 : Hague, 1: Mathez, 1; McCam, 2: Pearce, 15; Rickard, F., 1; Rogers, A. X., 1.

map: Clasoii Map Co.. 2; Cousens.

milling, concentration: Downey, 1: Cross, 1.

milling, cyanidation of ores: Drai/er, 4.

stamp mills: Raymond, 3; Rick- ard, T. A., 10.

milling: Parmelee, 3; Richards, 0: Rogers, A. N., 1.

minerals described: Emmons, 7; Headden. I.oew, 1: Rickard. F.. 1.

Gilpin County. — Continued.

mineral production, description of mines: Buchard, 2, 3, 4; Call- . breath, 2; Collins. A. L., 1; Col- lins, G. B.. 3, 9, 10; E. and M. J., 25, 34; Egleston, 1; Henderson. C. W.. 3, 4; Hollister, 1; Hodges, 1; Lee, W. T., 9; Lakes, 5; Mg. Ind.. 4; Mg. Rept., 22, 24, 27; .Mg. and Sei. Press, 5; Raymond. 1. 4, 7, 10; Rickard, P., 1; Rick- ard, T. A., 6; Rogers. A. N.. 1; Rothwell, 6; Tonge, 9, 10.

mines. Bob Tail Hill: Mg. Kept.. 6.

mining: Hoskin, 3.

ore analysis of, California mine:

Rickard, F., 1. ores: Bancroft, G. J.. 6; Collins,

G. a, 2; Lakes, 143, 233. 243;

Lee, H. A., 9; Mg. Ind. and

Tradesman, 4; Pearce. 15;

Spurr, Garrey. and Ball, 1. Pine Creek, gold: McCam, 2. pitchblende. iSee uranium, pyrite: Smith, W. B.. 2. silver: Collins, G. E., 1; Hague, 1;

Rickard, F.. I. Telluride ore: Rickard, F., 1. triangulation: Gannett, S. S., 2, 3. tungsten: Hess, 2. uranium: Becke. 1; E. and M. J.,

27; Fleck, 2, 3, 4; Hess, 1, 5;

Iee, H. A.. 7; Mg. Rev., 2; Ohly,

1; Ores and Metals, 7; Pearce,

R., 10; Rickard, F., 1; Tovote, 1. vein formation: Rickard, F., 1.

Gilsonite, General: Eldridge, 6; Grout, Worcester, and Henderson, 1; Lakes, 211, 219.

Grand County: Taff, 2.

northwestern Colorado: Hender- son, J., 13.

Giaciation, General: Ball, J. R., 1; Chapin, 1; Endlich, 3, 5; Hague and Emmons, 1; Hayden, 14, 19, 22; Henderson, 15; King, 1; Lakes, 5; Marvine, 1; Newberry, 9; Peale. 5, 7, 8; Salisbury, 1; Stevenson, 3; St. John, 1. age of: King, 1.

Indkx

Glaciation. — Continued.

action in Colorado: Foster, J. W., 1 ; Henderson, J., 15.

alluvium: Cross, Howe, and Trvius:,

Alma, moraines and drift : Patton,

Animas and San Juan rivers, gravel covered terraces: Howe and Cross, 1. Sec also Endlich,

Arapahoe: Lee, W. T., 3; Hender- son, J., 2, 5, 6a; Fenneman, 1.

Aspen mining district: Brunton, 2; Spurr, 1.

bibliography of: Henderson, 15.

Boulder County: George, 3.

Breckenridge: Ransome, 5.

Clear Creek: Underbill, 4.

Creede, glacla fieposits: Emmons and Larsen, 1.

Cripple Creek, moraines: Cross and Penrose, 1.

debris: Cross, Hov/e, and Irving, 1.

Denver basin: Emmons, Cross, and Eldridge, 2.

detrital cones: Cross, Howe, and Irving, 1.

drift of the Rooky Mountains: Comstock, 3.

drift, Colorado Plattau: Gilbert, 2.

Engineer Mountain: Cross, 41; Hole, 1, 2.

Estes Park: Mills, Enos, 1, 2, 3; Orton, 2.

extinct glaciers: Henderson, J., 4.

Georgetown district: Crosby, 4; Spurr, Garrey, and Ball, 1 ; Lakes, 247.

Hagues Peak: Stone, 1.

Hahns Peak: George and Craw- ford, 1.

Hallett: Chapin, 1; Mills, 1.

Lake County: Lakes, 5.

La Plata quadrangle: Cross, Spen- cer, and Ransome, 1; Davis, W. M., 8.

Las Animas glacier: Stone, 3.

l>eadville downtown district: EJm- nions and Irving, 1.

Glaciation. — Continued.

Leadville: Capps, 1 ; Capps and Lefflngwell, 1; Emmons, 2, 9.

Ings Peak: Orton, 2.

Monarch-Garfield district: Craw- ford, 3.

Monarch-Tomichi district: Craw- ford, 4.

Montezuma mining district, Sum- mit County: Patton, 7.

Mosquito Range: Emmons, 9; Lakes, 110.

Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

North America in ice age: New- berry, 9.

northwestern Colorado: Hender- son, 14; White, 4.

Ouray quadrangle: Cross, Howe, and Irving, 1.

Pikes Peak: Cross, 24; Lakes, 29.

Pitkin County: Ie, H. A., 9.

Pleistocene, Sawatch Range: Capps and Iffingwell, 1.

Rabbit Ears: Grout, Worcester, and Henderson, 1.

Rico Mountains: Cross and Spencer, 1, 2; Cross and Ran- some, 1.

Rocky Mountains: Bliss, 1; Can- non, 2; Comstock, 3; Emmons, 14; Stone, 9.

Sangre de Cristo Range: Sieben- thal, 2.

San Juan County: Comstock, 1, 7; Hills, R. C, 4; Cross and Howe, 1, 2; Spencer, 3.

San Juan River: Cross and Howe,

San Juan: At wood and Mather, 1.

San Luis district: Endlich, 1; Sieb- enthal, 4, 5.

Sawatch Range, near leadville: Capps and Lefflngwell. 1.

Sawatch Range: Davis, W. M., 7; Lakes, 2.

Silverton: Cross and Howe, 1.

southeastern division: Endlich, 4.

southern Colorado: Endlich, 4.

Index

Glaclatlon.— Continued.

Telluride quadrangle: Cross and Purlngton, 1; Hole, A. D., 2;

Lay, 1. Ten Mile district: Emmons, 27. Twin Lakes: Hayden, 30; West- gate, 1. White River district: Endlich, 5. Gladstone, hiibnerite from, Natalie mine: George, 3. zinc ores: Richards and Locke, 2. Glass sand, production, 1905: Day, 18— 1906, 1907; Thom, 1, 2—1909: Burchard, E.F., 4; Of, 1. Glen Eyrie formation: Finlay, 3. Glen Eyrie, paleontology: Cragin, 5;

Finlay, 3. Glenwood Springs, coal: Hills, R. C, 6. gas and oil: Newberry, 15. geology, dynamic: Lakes, 6. rocks, carbonaceous, analysis of: Clarke and HiUebrand, 1; Spurr,

Yampa spring, water analysis:

Spurr, 1. Gold, General: Chisholm, 4; Collins, G. E., 9; Eilers, 3; Emmons, 7, 20; Endlich, 1, 2, 4, 5; Fossett, 1; Frazer, 1; Hayden, 5, 6; Lakes, 5, 22, 56, 143, 205, 219; Lindgren, 1; Loew, 2; Marshall, 3; Marvine, 1; Mg. Rev., 3; Rickard, T. A., 8, 17; Stevens, 2; Stevenson, 3; Taylor, 1, 2; Wheeler, G. M., 2, 5; Wilson, J. S., 1. See also Reports of U. S. Mint.

age of, geological: Lakes, 15.

Animas Fork : Scholl and Herrick,

association with other metals:

Lincoln, F. C, 1 ; Pearce, R., 15. auriferous pyrite, Georgetown:

Spurr, Garrey. and Ball, 1. Battle Mountain quartzite forma- tion: Guiterman, F., 1. bonanzas in: Rickard, T. A., 17. Boulder County: Curie, 1; Farish,

2; Jennings. 1; Lakes, 131;

Marvin, 2; Rickard, T. A., 21;

Silliman, 1.

Gold. — Continued.

Boulder County, near Jamestown:

Farish, 1. Breckenridge district: Lakes, 66.

232; Lakes, A., Jr., 1; Min. Ind.

and Tradesman, 7; Ransome, 5. calaverite: Hillebrand, 10. Cambrian formation: Austin, W.

L., o.

Central City, Topeka mine: Lakes,

Clear Creek: Lawrence, B. B., 2. Colorado City, Golden Cycle mill,

1907: Fulton, 1. Costilla County, placer: Julian, 1. Cripple Creek: Cross and Penrose, 1; Curie, 1; Kemp, la; Knight, F. C, 1; Lakes. 30, 35, 47, 59; Liebenan, 1; Lindgren, 4; Lind- gren and Ransome, 1, 2, 3; Me- Cam, 1; Mollmann, 1; Pearce, R., 6, 8, 9; Rickard, T. A., 9, 11, 14, 22; Ritter, 2; Winslow, 1. Custer County: Emmons, 23. discoveries: Weston, 8. distribution of: Rickard, T. A., 25. Durango quadrangle: Emmons, W.

H., 1. Eagle River: Peale, 7. free: Lakes, 174. Georgetown: Spurr and Garrey, 1;

Spurr, Garrey, and Ball, 1. Gilpin County: Collins, A. L., 1;

Collins, G. B., 1; Curie, 1;

Mathez, 1; McCarar, 2; Rickard,

F., 1 ; Rogers, A. N., 1. Gold coin mine: Lakes, S9. Gold Hill: Eilers, 3; Marvine, 2;

Silliman, 1. gravel deposits: Cummings, 1. Grayback, placer and lode de- posits: Patton, 8. Grayback district, history of: Wul-

sten, 4.

Gunnison County: E. and M. J., 14; Frazer, 2; Hill, J. M., 1; Lakes, 20, 27, 32, 63, 179.

Hahns Peak: Draper, 1; Gale, 1; George and Crawford, 1; Par- sons and Liddell, 1.

Indbx

Gold. — Continued.

Howardsville: Mines and Minerals,

Idaho Springs: Lakes, 12; Spurr and Garrey, 2; Underbill, 2.

John Jay mine: van Diest, 12.

lacustrine sands, from: Hastings,

Lake City: Irving, 3; Irving and Bancroft, 1.

Lake Fork: Woolsey, 2.

La Plata Mountains: Austin, W. L., 2; Cross, Spencer, and Puring- ton, 1; Freeland, H. C, 1; Petre, 1; Rickard, T. A., 9.

La Sal Mountains: Lakes, 67.

Leadville: Blow, 1, 2; Boehmer, 1; Emmons, S. P., 2; Lakes, 16, 82; Tonge, 8; Warwick, 1.

metallurgy. Cripple Creek, 1897: Ingalls, 1.

mills, 1869: Munroe, 1.

milling, Gilpin County, 1895: Rick- ard, T. A., 10.

milling, cost of, 1898; Ingalls, 2.

milling, San Juan: E. and M. J.,

milling: Hubbard, G. D., 1; Col- lins, G. E., 4, 7.

mining: Hague, 1; Hubbard, G. D., 1; VanWagenen, T., 2.

Monarch-Garfleld district: Craw- ford, 3. 4.

Monarch-Tomichi district : Craw- ford, 4.

Needle Mountains: Lakes, 48.

ores, extraction from: Argall, P., 5.

ores, minerals accompanying: Irving and Bancroft, 1; Lincoln, F. C, 1; Pearce, R., 15; Rickard, T. A., 13.

Ouray, American Nettie mine: Lakes, 181.

Ouray, Camp Bird mine: Purlng- ton, 3, 4; Titcomb, 1.

Ouray: Cross, Howe, and Irving, 1; Endlich, 9; Irving, 2; Kedzie,

Paradox Valley: Lakes, 67.

paragenesis of: Pearce, 14.

Gold. — Continued.

Park County, 1895: Rickard, T. A., 9; Sadtler, 1.

placer mining. Banner: Richards,

placer mining, Breckenridge: Brown, T. A., 1 ; Crow, 1 ; Janin, C; Lakes, 197; Lakes, A., Jr., 1.

placer mining, Costilla County: Julian, C, 1.

placer mining, Denver Basin: Em- mons, Cross, and Eldridge, 2.

placer 'mining, Fourmile: Hoover,

placer mining, Grand River, upper valley: Hartley, C, 2.

placer mining, Hahns Peak : George and Crawford, 1 ; Janin, C, 1.

placer mining. Lay, Routt County: Gale, 4.

placer mining, Monarch-Tomichi district: Crawford, 4.

placer mining, Newlins Gulch: Butler, G. M., 3.

placer mining, Routt County, 1895: Rickard, 9.

placer mining, San Miguel: Mg. Ind., 2.

placer mining. Summit County: Mg. Rept, 5.

placer mining. Twin Lakes: Guen- therodt, 1.

placer mining, Willow Creek: Hartley, C, 2.

placer mining: Hayden, 14; Hena- hen, 1; Lakes, 5, 21, 22, 50; Thomas, K., 1; Thorn, 1.

Placerville: Hess, 4.

plains area: Darton, 9.

Platoro: Barnes, 1; Hills, 3; Ray- mond, 10.

Plomo: Gunther, 1.

production 1860-1866: HoUister, 1—1869-1874: Raymond, 1, 4, 5, 7, 9, 10—1872: E. and M. J., 1— of Black Hawk smelters, 1874: Egleston, 1 — by counties 1876: B. and M. J., 3—1872-1877; Fos- sett, 2—1880-1883: Burchard, H.

Index

Gold. — Continued.

C, 1. 2, 3, 4—1885-1905: Day, 1, 2. 3, 4, 5. 6, 7. 8, 9, 10, 11, 12, 13. 14, 15, 16, 17, 18—1885: B. and M. J., 10— by counties 1885-1886: Kimball. 1, 2—1887: Mg. Ind., 1—1887-1888: Munson, 1. 2— 1889: Smith, M. B., 1; 1880-1890: Emmons, 19—1891: Smith, M. E., 3—1892-1899: Rothwell, 1, 2, 3, 4. 5. 6, 7—1892: Williams, A., 2— 1870-1896: , Mg. Ind., 9—1896: Rickard, T. A., 6—1898: Tonge, 6—1899: Hodgson, 1—1877-1900: Lindgren, 2—1900: Smith, M. E., 2; Hodges, 1; Ores and Metals, 3; Struthers, 1—1901: Hodges, J. L., 2; Ie, H. A., 9; Struthers, 2—1902: Downer, F. M., 1, 2; Mines and Mining, 2; Ores and Metals, 6; Struthers, 3—1903: Eckel, 2; E. and M. J., 38; Mg. Kept., 34—1904: Judd, 1; Mines and Mining, 3; Ores and Metals, 8—1905: Ores and Metals, 9— 1906: Ingalls. 5; Thorn, 1—1907: Dalzcll. 2; Ingalls, 0; Thorn, 2— 1908: Collins, G. E.. 8; Hender- son, C. W., 1; Ingalls. 7—1909: Ingalls, 8—1910: Dalzell, 3; Fay, 1: Henderson, C. W., 4; Mc- Caskey. l ; Van Wagner, 4 ; War- wick, 4—1911: Breen. L. A., 1; Collins, 11 : Henderson, C. W., Of, 1: Parker. B. W., 7—1912: HenaBn — general: Emmons, 1; Lee, H. A., 1: Lindgren, 2; Lindgren and McCaskey, 1: Na- tional Conservation Commission, 1; Raymond, 8; Tonge, 14; Wyn- coop, 1. Ser also Reports of U. S. Miit.

quartz-bearing: Argall, P., 1.

Red Mountain: Kedzie, 1.

Rico quadrangle: Cross and Ran- some, 1; Farish, 3; Lakes, 44; Ransome, 2; Rickard, T. A., 7.

rocks In which it occurs: Lakes,

o

Gold. — Continued.

Rosita: Clark, R. N., 2; Cross, 27; Mg. Rept., 32.

Sangre de Cristo Creek: Rhoda, 3;

van Diest, E. C. and P. H., 1. San Juan County: Comstock. 1, 7;

Curie, 1; Endlich, 3; Ihlseng, 1;

Prosser, 2; Rickard, T. A., 9. San Miguel: Spaulding, 1. Sawatch Range: Peale, 7. Sawpit: Hess, 4. Silverton: Cross and Howe, 1;

Ransome, 3; Rickard, T. A., 9. southern Colorado, 1895: Rickard,

South Park: Lakes, 115.

Summit County: Hausmann, 1;

Hills, R. C, 3; Lakes, 37, 53;

Patton, 7. tellurides of Bear Creek: Emmons.

tellurides of Boulder County:

Lakes, 25. tellurides of Cripple Creek: Hille-

brand and Allen, 1. tellurides. Gold Hill: Eilers, 3;

Silliman, 1. tellurides, Plata Mountains:

Austin, W. L., 1. tellurides and pyrlte, I-a Plata

mountains: Lakes, 119. tellurides. Needle Mountains:

Cross, Howe, Irving, and Em- mons, 1. tellurides, Sierra Blanca: Pearce,

R., 13; Sharwood, W. J., 1. telluride ores: Kemp, 2; Lakes,

56, 61. Telluride district: Cross and Pur-

ington, 1; Porter. 1; Purington,

Telluride district, Liberty Bell

mine: Winslow, 2. Telluride district, production 1894:

Rothwell, 3. Victor and Cripple Creek districts:

Lakes, 41. See Cripple Creek. Vulcan and Mammoth Chimney

mines: Ikes, 20.

Gold Coin mine: Lakes, 89.

Index

Golden, General: Cross, 22; Hague, 1. andesite tuff, Table Mountain, an- alysis of: Lakes, 118. analcite from : Clarke and Steiger,

apophyllite, analysis of: Cross and HlUebrand, 2.

basalt. Table Mountain, analysis

of: Emmons, Cross, and Eld- ridge, 2. brick: Hague, 1. clay, analysis of: Clarke and Hille-

brand, 1. clay, white ware: Geijsbeek, 1. coal: Emmons, Cross/ and Eld- ridge, 2; Hay den, 4; Hodge, 1;

Lakes, 6; Potter, W. B., 1. Cretaceous : Cross, 22. feldspar, analysis: Geijsbeek, 1. Are clay : Am. Jour. Mg., Bailar, 3 ;

Darton, 9; Patton, 6; Ward, W.

S., 1. Are clay, analysis: Furman, 1;

Ward, W. S., 1. geology, dynamic : Emmons, Cross,

and Eldridge, 2; Patton, 6. geology: Hayden, 6; Marvine, 1;

Peale, 1. mesolite, analysis of: Cross and

Hillebrand, 2. minerals, analysis of: Clarke, F.

W., 6; Steiger, 1. Table Mountain, basalt from:

Lakes, 165; E?mmons, Cross, and

EHdridge, 2. Table Mountain, ptilblite: Dana,

III. s., I. Table Mountain, minerals from:

Cross and Hillebrand, 2; Patton,

non-conformities: Eldridge, 2. paleobotany : Lesquereux, 19. paleontology, fossil described : Ber-

thand, 1; Lesquereux, 16. ptilolite,* Table Mountain: Dana, E.

S., 7. soil, analysis of: Emmons, 7. thomsonite : Clarke and Steiger, 2 ;

Patton, 4. tin deposits near: Rolker, 3.

Golden. — Continued.

tuff. Table mountain, analysis : Em- mons, Cross, and Eldridge, 2.

zeolite crystals: Emmons, Cross, and Eldridge, 2 ; Cross and Hille- brand, 2; Lakes, 218; Marvine, 1.

Gold Hill.

Oeneral: Endlich, 5.

altaite: Endlich, 6.

calaverite : Endlich, 6.

geology, economic: Emmons, 7;

Endlich. 1. geology, mining: Marvine, 2. hessite: Endlich, 6. minerals: Endlich, 1,6; Loew, 1. petzite: Endlich, 6. schirmerite: Endlich, 6. silver: Eilers, 3. sylvanite: Endlich, 6. tellurides: Eilers, 3; Marvine, 1;

Silliman, 1.

Gore Canyon: Draper, 2; Henning, 1.

Gothic, ore deposits: Rickard, T. A., 28.

Gothic Mountain, geology: Cross, 23.

Grahamite, Middle Park: Taff, 2. production 1898: Roth well, 8.

Granada quadrangle: map: U. S. G. S.

Grand Cavern: Le Couppey de la Forest, 1.

Grand County, asphaltum: Lee, H. A..

geology, economic: Emmons, 7.

gilsonite: Taff, 2.

map: Clason Map Co.

mines, production: Burchard, H.

C, 2; Henderson, C. W., 4. Rabbit Ears region, geology : Grout,

Worcester and Henderson, 1.

Grand Hogback, General: Belcher, 2:

White, 4. coalfields: Gale, 3, 8. Danforth Hills, and, coal field,

map: Gale, 3. map: U. S. G. S.

Grand Junction, Oeneral: Emmons. 20. coal : Stone, 8. hydrography : Newell, 6. soil survey: Holmes and Rice, 1.

Index

Grand Mesa, General : Endlich, 7.

coal field, analysis and map: Lee,

W. T., 10, 13. geology: Lee, W. T., 9.

Grand River, General: Beckwith, 1; Endlich, 5; Gannett, H., 4; Mar- vine, 1; Peale, 7, 8, 12; Powell, 1.

coal, analysis: Lakes, 72, 160.

coal fields: Hills, R. C, 22; Lakes, 8, 72, 160, 169, 172; Storrs, 1; Thiele, 1.

geology, dynamic: Lakes, 72, 160; Hills, R. C, 22.

hydrography: Newell, 6, 7, 12, 14, 16; Walcott,13.

map : Peale, 8.

paleontology, dinosaurian beds : Riggs, 1; Riggs and Farrington,

physiography: Riggs and Farring- ton, 1.

placer mining: Hartly, C, 2.

pre-Cambrian : Van Hise, 1.

reclamation work: Quinton, J. H.,

Grand Valley, map: Glason Map Co.

reclamation work: Newell, 21. Granite, General: Day, 1; Merrill, 4; Peale, 6.

Chaffee County: Crawford, 4; Hen- ahen, 1; Hoenes, 1; Mg. Sci., 3.

production: 1889-1893, 1895-1905; Day, 2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18—1899: Roth well, 7 —1906-1907: Thom, 1, 2—1909: Burchard, E. F., 4.

Rabbit Ears region: Grout, Wor- cester, and Henderson, 1.

Salida: Henahen, 1. Granite (Chaffee County), bismuth: Ingalls, 8.

geology, mining: Hayden, 14. Graphite, General: Lakes, 151.

Chaffee County: Ihne, 1.

production 1893: Rothwell,2 — 1904- 1905: Day, 17, 18—1906: Ingalls, 5—1906-1907: Thom, 1, 2—1910: Bastin, 1—1911: Of, 1; Parker, E. W., 7—1912: Henahen, 1.

Trinidad: Lakes, 3.

Gravel, Nepesta quadrane: Fisher, 1. sand, , production: Burchard, E. F., 4, 8; Parker, E. W., 7.

Grayback. See also Costilla County, amphibole and hornblende schist:

Patton, 8. andesite: Patton, 8. biotite gneiss: Patton, 8. breccias, igneous: Patton, 8. diorite : Patton, 8. felsites: Patton, 8. geology, mining: Hayden, 14. geology, ore deposits: Patton, 8. gold: Patton, 8; Wulsten, 4. granite gneiss : Patton, 8. hornblende schist and amphibolite:

Patton, 8. iron : Patton, 8.

mines, lode and placer: Patton, 8. monzonite porphyry: Patton, 8. paleontology: Patton, 8. pegmatites: Patton, 8. placer mining: Julian, 1; Patton, 8. porphyries: Patton, 8.

Great Basin, Tertiary strata: Cope, 16. Great Plains, map: Hay, Robert, 2. Greeley, coal: Hayden, 19. hydrology: Boyd, D., 1. map: U. S. G. S. physiography: Boyd, D., 1. soil survey: Holmes and Neil, 1. Green Mountain, coal, analysis: Eakins, physiography: Darton, 13. Greenhorn Mountains, tin mine: Hills, 15; van Diest, 13. vanadium: E. and M. J., 44. Green River, General; . Powell, 1, 2; Scudder, 1, 2. antecedent to Uinta Mountains:

Davis, W. M., 4; Suess, 1. erosion: White, 26. origin: Emmons, 26; Hills, R. C,

paleobotany : Lesquereuz, 16. paleontology, Cenozolc and Meso-

zoic: White, 3. physiography : Emmons, 26. Tertiary: Scudder, 1, 2. volcanic dust: Montgomery, 1.

Indbx

Green River Basin (largely outside Goloriado). Bitter Creek uplift: Hague and Emmons, 1.

Brldger group: Hague and Em- mons, 1.

Browns Park Tertiary: Hague and

Emmons, 1. Cretaceous: Hague and Emmons,

Colorado group: Hague and Em- mons, 1.

Dakota: Hague and Emmons, 1.

Escalante Hills: Hague and Em- mons, 1.

Fox Hills: Hague and Emmons, 1.

geology, descriptive: Hague and Emmons, 1.

geology, general: Hague and Em- mons, 1.

Green River beds: Hague and Em- mons, 1.

Junction Peak: Hague and Elm- mons, 1.

Jurassic: Hague and Emmons, 1.

Owi-yu-kuts plateau: Hague and Emmons, 1.

Permo-Carbonif erous group : Hague and Emmons, 1.

Tertiary formations: Hague and Emmons, 1.

Trlasslc: Hague and Emmons,!.

Uinta Eocene: Hague and Em- mons, 1.

Uinta Range: Hague and Emmons,

Uinta uplift: Hague and Emmons,

Upper Coal Measures: Hague and Emmons, 1.

Vermillion Creek series: HagU and Emmons, 1.

Weber Quartzite group: Hague and Emmons, 1.

Wyoming Conglomerate: Hague and Emmons, 1.

Yampa Peak: Hague and Emmons,

Yampa Plateau: Hague and E!m- mons, 1.

Green River group: King, 1; Peale, 12. Green River Valley: White, 4.

Grey Creek, iron, analysis of: Chauve-

net, 6. Griffith lode, sflver and gold: Pearce,

R., 12. Grindstone: Lakes, 61; Parker, E. W.,

7; Phalen, 1. quarries, Gunnison: Mg. Sci., 4. Grizzly Peak, granite breccias: Stone,?. Gunnison: von Rath, 1.

to Grand River, map : Peale, 7. Gunnison County, building stone:

Lakes, 20, 27, 94; Merrill, 2. CeboUa district, iron ores: Lakes,

26; Singewald, 1; Snedaker, 2. Cliff Creek, efflorescence on sand- stone, analysis of: Eakins, 4. coal, analysis of: Eakins, 6; Lakes,

6; McNeil, 1. coal, Book Cliffs: Lakes, 192. coal: Ashley and Fisher, 1; Chau-

venet, 6; Hallowell, 2; Lakes, 6;

Lee, H. A., 9 ; Lee, W. T., 10, 13 ;

McNeil, 1; Potter, W. B., 1. geology, dynamic: Hill, J. M., 1;

Lakes, 6, 20. geology, economic: Emmons, 7;

Lee, H. A., 9. geology, Tomichi district: Craw- ford, 4. gold, Sylvanite mine : E. and M. J.,

gold: Frazer, 2; Hill, J. M., 1;

Lakes, 20, 27, 32, 63, 179. grindstone quarries: Mg. Sci., 4. iron, analysis of: Chauvenet, 4, 6. iron ore, CeboUa district: Lakes,

26; Singewald, 1, 2; Snedaker, 2. iron ore, Taylor Peak and White- pine: Harder, 2. iron ore, Whitepine: Snedaker, 2. iron ore: Chauvenet, 4, 6, 8; Lelth,

kaolin. Waterfall mine: Eakins, 3. Laramie and post-Laramie : Cross,

limestone, analysis of: Burchard,

E. F., 8; Chauvenet, 6. lollinglte: Hillebrand, 1.

(It)

a8()

Indbx

Gunnison County. — Continued.

Mammoth and Vulcan mines:

Lakes, 20, 27, 31. manganese deposits, analysis of:

Harder, 4; Lakes, 26; Penrose, 1. map: Clason Map Co., 33; Hill, J.

M., 1. Maple Leaf mine: Lakes, 177, 187. marble: Hall, C. L., 2; Lakes, 22,

226; Merrill, 4; Newberry, 13;

Stone Trades Journal, 1; Wes- ton, 9. minerals analyzed: Clarke, F. W.,

6; Eakins, 10. minerals from : Headden, 3. mineral production: Burchard, 1, 2,

3, 4; Henderson, C. W., 4;

Hodges, 1; Lakes, 5, 208; Lee, H.

A., 9; Mg. Kept., 18; Munsou, 1;

Tonge, 1. molybdenum: Sebbeu, 1. ore deposits: Lakes, 143, 214;

Rickard, T. A., 28; Warren, E.R.,

paleontology, fossils from: Spen- cer, 2. physiography: McConnell, 1. Pitkin, mines described: Holi-

baugh, 1; Mg. Kept, 11. products: Hallowell, J. K., 3. Sheep Mountain, mines: E. and M.

J., 11. silver: Frazer, 2; Holibaugh, 1;

Lakes, 32; Mg. Kept, 11. slate, stone: Coons, 1. smaltite: lies, 2. Sulphantimonltes, analysis of:

Eakins, 2. Sylvanite mine: E. and M. J., 1, 14. Tomichi district: Crawford, 4. triangulation : Gannett, H., 12;

Gannett, S. S., 2. Vulcan mine: Lakes, 20, 27, 63, 214. Yule Creek. See marble. Whopper lode: Frazer, 2.

Gunnison River, General: Peale, 7, 8. Cretaceous section: Stanton, 2. Eagle River, and, map: Newton, 1. erosion: Endlich, 8. hydrology: Newell, 6, 7, 12, 14.

Gunnison River. — Continued.

Lake Fork, landslides: Cross, 40. Ike Fork: Peale, 8. map: Peale, 8. pre-Cambrian : Van Hise, 1.

Gunnison tunnel: Bain, 6. Gunnison Valley, coal: Woodruff, E. O.,

map : Clason Map Co. Gunsight: Draper, 2. Gypsum, General: Eldridge, 6; Em- mons, 7 ; Hague, 1 ; Hayden, 5, 6, 14; Lakes, 141, 235; Peale, 6, 12; Stevenson, 3.

Breckenridge: Ransome, 5.

Castle Rock district: Lee, W. T., 5.

Eagle County: Burchard, E. F., 5; Peale, 7.

Larimer County: Lee, H. A., 6, 9.

northern Colorado: Henderson, J.,

Perry Park: Kruger, Hamilton, and Enriquez, 1.

plains area: Darton, 9.

production 1883-1884: Williams, A., 1—1885-1905: Day, 1, 2, 3, 4, 6, 6, 7. 8, 9, 10, 11, 12, 13, 14, 16, 16, 17, 18—1893-1899: Rothwell, 2, 3, 4,

5, 6, 7, 8—1900-1902: Struthers, 2, 3—1906: Ingalls, 5; Thom, 1, 2 —1909-1911: Burchard, E. F., 4,

6, 8 — 1911: Henahen, 1; Parker, E. W., 7.

Pueblo quadrangle: Gilbert, 7. Red Beds: Hague and Emmons, 1. Uncompahgre region: Siebenthal, Gypsum, Eagle river (Eagle County):

Peale, 7. Gypsum Valley, ore deposits: Hille-

brand and Ransome, 1. Hagues Peak, glacier: Stone,!. Hahns Peak, General: Draper, 1, 2; Lakes, 23. andesite: George and Crawford, 1. basalt: Draper, 1. coal: Draper, 1.

copper: George and Crawford, 1. dacite porphyry : George and Craw- ford, 1.

Indkx

Hahns Peak. — Continued.

diorlte: George and Crawford, 1.

gold: Draper, 1; George and Craw- ford, 1 ; Parsons and Liddell, 1.

gabbro: George and Crawford, 1.

geology, dynamic: Draper, 1; Gale, 1; George and Crawford, 1; Lakes, 143.

iron: Draper,!.

latite and latite porphyry: George and Crawford, 1.

map: Gale, 1; George and Craw- ford, 1.

mineral deposits: Parsons and Liddell, 1.

mines and ore deposits : Draper, 1 ; George and Crawford, 1; Rick- ard, T. A., 28.

mines: Lee, H. A., 9.

olivine basalt: George and Craw- ford, 1.

placer mines: Draper, 1; Gale, 1; George and Crawford, 1; Janin, C, 1; Lakes, 210; Mg. Scl., 1; Parsons and Liddell, 1.

physiography: Draper, 1.

porphyry: Gale, 1; George and Crawford, 1.

quartz basalt: George and Craw- ford, 1.

silver: Draper, 1; George and Crawford, 1.

rhyolite: Zirkel, 1; George and Crawford, 1.

trachytes: Draper, 1.

vein deposits: Gale, 1. Hailett Glacier: Chapin, 1; Henderson,

J.. 15; Mills, 1. Hails Valie/r copper: Jernegan, 2.

ilesite: Am. Jour. Sci., 1.

iron, hematite: Rolker, 1.

iron ore: Chauvenet, 8.

lead : Jernegan, 2.

metallurgical campaign : Jernegan,

mineral, new: Hillebrand, 1.

minerals, analysis of: Clarke, F. W., 6.

silver: Jernegan, 2.

Whale lode: Jernegan, 1. Hamilton, coal: Potter, W. B., 1.

Hard cart Gulch, iron ore: Chauvenet,

Hardscrabble district, geology, eco- nomic: Wheeler, G. M., 2. Hastings, coal mine explosion: White- side, 3. Hayden, hydrology: Newell, 6.

petroleum : Fehneman and Gale, 2. Henrietta Park, map: Boehmer, Ic. Higbee, Purgatory River: Freeman and

Bolster, 2. Higbee quadrangle, map: U. S. G. S. Highland, loess, analysis of: Clarke,

F. W., 9. Hinsdale County, Carson camp, ore de- posits: Larsen, 1. chalcedony and opal: Patton, 1. geology: Emmons, 7; Lee, H. A.,

Lake City. See Lake City, mineral production: Burchard, H. C, 2, 3, 4; Henderson, C. W., 4; Hodges, 1; Mg. Rept, 16, 18. opal and chalcedony: Patton, 1. ore deposits: Ihlseng, 1; Lee, H.

A., 9; Rickard, T. A., 28. Ouray quadrangle: Cross, Howe,

and Irving, 1. physiography: Lee, H. A., 9. Silverton quadrangle : Cross, Howe,

and Ransome, 1. spherulites: Patton, 2. triangulation : Gannett, S. S., 2, 3. uranium: Lee, H. A., 7. vulcanism: Lee, H. A., 9. Holly, Arkansas River: Freeman and Bolster, 2. hydrology : Newell, 6. Holy Cross Mountain, description: Hay- den, 14. Homestake mine, history of: Butler,

W. H. C, 1. Horsetail Creek, Neocene: Dall and

Harris, 1; Osborn, 4. Hortense, minerals from: Schaller, 2. Hot Springs, General: Comstock, 1; Hayden, 6; Headden, 4; Lakes, 144, 164, 178; Loew, 1; Peale, 2, 8; Strieby, 1; Wilson, J. S., 1. Canon City: Endllch, 1. Elk Range: Holmes, 1.

Indbx

Hot Springs. — Continued.

hematite: Rolker, 1.

Manitou: Peale, 5.

Middle Park: Lakes, 162.

Pagosa: McCauley, 2; Newberry,

Red Mountains: Comstock, 9.

Routt County: Lakes, 162.

Soda Creek: Spurr and Garrey, 2. Hot Springs, limonite ore: Kimball, 3. Hot Springs Creek, hydrology: Hawn,

Hot Sulphur Springs: Marvine, 1; Wil- son, J. S., 1.

water analysis: Lee, H. A., 9. Howardsvllle, gold: Mines and Min- erals, 4.

Old Hundred mine and mill: Mines and Minerals, 4.

San Juan: Lakes, 10.

Silverton quadrangle : Cross, Howe, and Ransome, 1. HUbnerlte: George, 3.

Silverton: Cross and Howe, 1. Huerfano County: Oeneral: Endlich, 7.

Apishapa quadrangle: Stose, 1.

coal: Guiterman, K. S., 1; Lakes, 172; Lee, H. A., 9; Richardson, 2.

Cretaceous section: Stanton, 2.

geology, economic: Emmons, 7.

gold: Lee, H. A., 9.

lake basin. Eocene of: Hills, R. C,

lake basin: Osborn, 1.

mines, production: Burchard, H. C, 2; Henderson, C. W., 4.

mines: Lakes, 147.

ore deposits: Lakes, 6; Spurr, Garrey, and Ball, 1.

paleontology, fossils described: Cragin, 1.

Spanish Peaks : Hills, 25.

Veta Peak, rock streams: Patton,

volcanic ash: Woolsey, 1.

Walsenburg area: Hills, 15. Huerfano Park quadrangle, map: U. S.

G. S. Huerfano River Basin, Tertiary beds: Hills, R. C, 10.

Humboldt-Pocahontas vein: Clark, R. N., 2.

Hydrocarbons, albertite (?): Denton, 1. deposition of: Adams, G. T., 4. ozokerite: Ohly, 5. Rabbit Ears region: Grout, Wor- cester, and Henderson, 1.

Idaho Springs, alkali syenite porphyry:

Clarke, P. W., 8. biotite latite, analysis of: Clarke,

F. W., 8. copper: Spurr and Garrey, 2. geology, dynamic: Spurr and

Garrey, 2. gold: Lakes, 12; Spurr and Garrey,

2; Underbill, 2. haulage: Barnes, H. B., 1. hydrology: Spurr, Garrey, and

Ball, 1. lead: Spurr and Garrey, 2. Lucania tunnel: Hirschberg, 1. map: U. S. G. S. milling practice: Bain, 2; Downey,

C. J., 2; Parmelee, 5; Richards,

minerals: Pearce, 2.

mineral waters: Stevenson, 3. mines. Crown Point: Lakes, 36. mines, Franklin: Bain, 1. mines, Knickerbocker: Lakes, 36. mines, Lamartine: Lakes, 77. mines, Seaton: Underhill, 2. mines, Stanley Consolidated :

Iakes, 12. mines: Callbreath, 1; Lakes, 28;

Spurr, Garrey, and Ball, 1. mine water: Jones, L. J. W., 1. ore, analysis, of: Bain. 2. ore deposits: Bain, 2; Rickard, T.

A., 28; Spurr and Garrey, 2;

Underhill, 2. physiography: Spurr and Garrey,

silver: Spurr and Garrey, 2; Under- hill, 2. Stanley mine, analysis of water

from: Clarke, F. W., 9. water, analysis of: Lee, H. A., 9;

Spurr, Garrey, and Ball, 1. zinc: Spurr and Garrey, 2.

Index

Igneous instrusions General: Russell,

I g n e o us intrusions, Monarch-

Garfield area: Crawford, 3. intrusive sandstone dikes, Pikes

Peak region: Cross, 25. laccolites in southeastern Colo- rado: Gilbert, 6. laccolitic mountains in Colorado:

Iddings, 2. Laccolitic mountains, Telluride

quadrangle: Cross and Puring-

ton, 1. Laccolitic mountains: Cross, 23.

Infusoriai earth, west Denver: Head- den, 2.

Insecta, General: Berktau, 1; Brues 3; Cockerell, 2, 18, 22, 26, 28. '29. 30, 33; Klrkaldy, 1; Minot, 1; Rohwer, 1, 2, 3, 4, 5, 6; Scudder, 17, 23, 25, 31, 32; Sutton, 1; Wheeler, W. M., 1, 2.

American Territories, first discov- eries: Scudder, 1, 8.

Aphidae: Scudder, 38.

arthropods: Cockerell 19.

bees, Florissant: Cockerell, 34.

bibliography of fesozoic: Scudder,

bibliography of Paleozoic: Scud- der, 31.

butterflies: Scudder, 26.

cockroaches: Scudder, 40.

Coleoptera: Scudder, 4.

earwings: Scudder, 7.

Florissant: Cockerell, 2, 4. 5, 7, 10, 11, 13, 14, 15, 16, 18, 19, 19a, 20. a, b, c, d, 21, 22, 24, 26, 28, 29, 30, 36, 39, 41, 42, 43, 47, 48, 49, 51, 52, 63, 55, 60; Rohwer, 1, 2, 3, 4. 5, 6, 7; Scudder, 36.

Fossil Canyon: Scudder, 1.

Mesozoic: Scudder. 1, 22.

Mesozoic, bibliography of: Scud- der, 31.

Miocene: Brues, C. T., 1, 4, 5, 6; Cockerell, 2. 4. 5, 7, 10, 11, 13, 14, 16, 16, 18, 19. 19a, 20. a, b, c, 21, 22, 24, 26, 27, 28, 29. 30, 31. 36, 37, 38, 39, 40, 41, 42, 43, 46, 47. 48, 49, 51, 52, 53, 55, 60; Rohwer 1, 2, 3, 4, 5, 6. 7.

I nsecta. — Continued.

Paleozoic, bibliography of: Scud- der, 31, 40.

Tertiary: Scudder, 1, 3, 4, 6, 9, 20, 24, 26, 27, 28, 30, 31, 84, 35, 36.

Triassic: Scudder, 19, 40.

Invertebrata, General: Lee, W. T., 14; White, 8, 9, 22. See also Paleon- toiogy.

Arapahoe, Denver: Emmons, Cross, and Bldridge, 2.

Articulate, Tertiary beds. Floris- sant: Scudder, 20.

Benton: Lee, W. T., 5. bibliography: Marcou, J. B., 1;

White, 1; White and Nicholson,

1, 2. Canon City: Walcott, 3. Carboniferous: Girty, 2; Weller, 2. Cenozoic: White, 11, 12. Colorado formation : Stanton, 2. Cretaceous: Cragin, 2; Cross,

Howe, and Irving, 1; Gabb, 1;

Henderson, 12; White, 6c. Denver Basin : Emmons, Cross, and

Eldridge, 2. Devonian: Cross, Howe, and

Irving, 1; Kindle, 1. Dolores: Cross and Spencer, 1. Fremont limestone. Canon City:

Walcott. 3. Harding sandstone. Canon City:

Walcott, 3. Jurassic: White. 20. I>aramie: White, 5. Lyklns: Girty, 5. Mesaverde: Cross, Spencer, and

Purington, 1. Mesozoic: Stanton, 4; White, 11.

.Mississippian: Cross, Howe, and

Irving, 1. Ordovician: Walcott, 3. Permian : Butters, 2. Tertiary: Gabb, 1; Scudder, 1. 3.

4. 9, 20, 27, 36. See under Pale- ontology, age names, formation

names, fossil groups, and fossil

names.

Index

Iron, Oeneral: Bancroft, 2; Berthoud, 4; Endllch, 1, 5; Foster, E. L., 1; Frazer, 1; Hague, 1; Hayden, 5, 6; Johnson, 2; Lakes, 5, 143, 205; Lee, H. A., 1; Marvine, 1; Nat. Conservation Com., 1; Nesmith, 1: Putnam, 1; Rolker, 1; Snedaker, 2.

bog ore, Crested Butte: Lakes, 4,

5, 6; Warren, E. R., 2. bog ore, auriferous. La Plata

Mountains: Cross and Spencer,

bog ore, Elk Mountains: Emmons,

Cross, and Eldridge, 1. bog ore, Silverton: Cross, Howe,

and Ransome, 1. bog ore. Wagon Gulch: Larsen, 1. Boulder County: Emmons, 21. Canon City: Drown, 1. Chaffee County: E. and M. J., 15. Custer County: Emmons, 21.

Blmoro quadrangle: Hills, R. C,

Gray back: Patton, 8.

Gunnison County: Chauvenet, 4,6; Harder, 2; Leith, 1; Singe wald,

Hahns Peak: Draper, 1.

hematite, brown, production 1889- 1890: Day, 5.

hematite, red, production 1889- 1890: Day, o.

Leadville: Kimball, 3; Vinton, 3; Warwick, 1.

manganese, CeboUa River: Lakes,

Monarch-Garfield: Crawford, 3.

Monarch-Tomichi district: Craw- ford, 4.

Nepesta quadrangle: Fisher, 1.

northern Colorado: Chauvenet, 3.

Ouray County: Kedzie, 1.

pig, production, 1889-1890, 1899- 1905: Day, 5, 12, 13, 14, 15, 16, 17, 18—1893-1896: Rothwell, 2, 3, 4, 5—1904: Judd, 1—1906, 1907: Thom, 1, 2.

Pitkin County: Devereux, 1.

I pen. — Continued.

production, 1883-1884: WilliamB, A., 1—1885, 1887, 1889, 1893: Day, 1, 3, 5, 6, 7, 8—1893: Roth- well, 2—18934: Blrkinbine, 1— 1897-1899: Day. 11, 12; Rothwell, 6. 7, 8 — 1900: Day, 13; Ores and Metals, 3; Struthers, 1—1901: Day, 14 ; Lee, H. A., 8 ; Struthers, 2—1902: Day, 15; Struthers, 3— 1903: Day, 16; Eckel, 2— New- land, 1—1904, 1905: Day, 17, 18—1906: Ingalls, 5; Thom, 1— 1907: Thom, 2—1909: Burchard, E. F., 2; Ingalls, 8—1910: Bur- chard, EJ. F., 6; Dalzell, 3; Fay, 1; Warwick, 4 — 1911: Burchard, E. F., 7; Henahen, 1; Parker, B. W., 7.

Pueblo quadrangle: Gilbert, 7.

resources of Colorado: Chauvenet, 5, 8.

Saguache County: E. and M. J., 40.

southwestern division: Endlich, 4.

steel, and, production, 1887-1888,

1901, 1903, 1904: Day. 3, 4, 14,

16, 17—1905: Ingalls, 5—1910:

Warwick, 4. Summit County: Patton, 7. Taylor Peak and Whltepine:

Harder, 2. Whitepine and Taylor Peak:

Harder, 2.

Iron Hill, geology, ore deposits: Blow,

I ronton Park: Cross and Howe, 1. Irrigation, areas: Newell. 14.

canals and geological formations:

Allen, A. G., 1. engineering: Crafts, 1; Wilson, H.

methods, Greeley: Boyd, D., 1. Nepesta quadrangle: Fisher, 1. sub-irrigation, San Luis Valley:

Newell, 14. survey, results of: Wilson, H. M., Isabel Glacier: Henderson, J., 15. island Park: White, 4.

Indbx

Italian Peak, minerals, analysis of: Eakins, 10.

Jackson Count/r coal: Campbell, M. R., 5; Shubart, B., 2; The New Em- pire, 1. mineral production: Henderson, C. W., 4.

Rabbit Ears region, geology: Grout, Worcester, and Hender- son, 1.

Jamestown. See also Boulder County, geology, economic: Emmons, 7. gold: Parish, 1. mines: Parish, 2. silver: Parish, 1. vein phenomena: Parish, 1.

Jefferson County. See also Golden.

antiquities: Cannon, 1.

augite-mica syenite: Emmons, Cross, and Eldridge, 1.

Bear Creek, ore deposits: Ban- croft, George J., 6.

Belcher Hill, tourmaline schists: Patton, 3; Upham, 2.

building stone: Merrill, 2, 4.

columbite: Headden, 1.

coal: Lee, H. A., 9.

copper: Lindgren, 8.

fluorspar: Burchard, E. P., 1.

geology, economic: Emmons, 7; Possett, 1; Lee, H. A., 9.

gold: Lee, H. A., 9.

map: Clason Map Co.; Lindgren,

mica: Ohly, 4.

minerals, analysis: Clarke, P. W.,

mines, 1860: Raymond. 1.

ore deposits: Bancroft, George J.,

sandstone: Poster, Wm., 1; Mer- rill, 4.

tourmaline and tourmaline schists: Patton, 3; Upham, 2.

trlangulation : Gannett, S. S., 2.

Jensen quadrangle, map: U. S. G. S.

Jerome Park, coal, analysis of: Lakes, Sunshine district, coal: Lakes, 6.

Jointing, Monarch-Garfield area: Craw- ford, 3.

Monarch-Tomichi district: Craw- ford, 4.

Julesburg, paleontology: White, 13.

Junction Mountain, anticlinal struc- ture: Powell, 4; White, 4, 26.

Junction Peak: Hague and Emmons, 1; King. 1.

Jura, Denver Basin: Eldridge, 2. non-marine: Lee, W. T., 6.

Jurassic.

Stratigraphic.

General: Darton, 9; Elmmons, 20; Endlich. 1, 5; Hatcher, 4, o; Hay, O. P.. 4; Hayden, 6, 12, 14, 19, 22; Holmes, 2, 5; King, 1; Ivakes, 6, 10; Lee, W. T., 10; Lindgren, 9; Marcou, J., 1; Mar- vine, 1; Peale, 5, 7, 8; Steven- son, 3; White, 19; Williston, 1.

Apishapa quadrangle: Stose, 1.

Colorado Range: Hague and Em- mons, 1.

Denver Basin: Eldridge, 2.

eastern slope: Hayden, 24.

Elk Range: Holmes, 1.

Grand River district: Peale, 12; Riggs and Parrington, 1.

Hahns Peak: George and Craw- ford, 1.

map: Willis, 2.

Morrison: Stanton, 3.

non-conformity: Emmons, 8.

non-marine: Lee, W. T., 6.

North Park: Hague and Emmons,

northwestern Colorado: White, 4.

ore deposits in: Rickard, T. A., 28.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Rio Blanco County: Gale, 2.

southern Colorado: Stevenson. 12.

Telluride: Purington, 2.

western Colorado: Cross, 35.

Wyoming, southeastern: Knight, W. C, 3.

Index

J u rassi c. — Continued. Paleontology. General: Clark, 2; Cope, 64; Gale, 5, 6; Hay, O. P., 5; Henderson, 10; Hills, R. C, 1; Marsh, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 22, 23, 34, 44; Marvine, 1; Peale, 7, 8; Skiff, 1; Stevenson, 3; White, 5, 8, 15, 16, 18, 19, 20, 22, 27; Williams, S. G., 1; Williston, 3.

Anthracite-Crested Butte : Em- mons, Cross, and Eldridge, 1.

Atlantosaurus beds: Emmons, Cross, and Eldridge, 2; Cross, 35; Cross and Purington, 1; Cross and Spencer, 1; Hatcher, 6; Lee, 7a; Marsh, 6 to 19, 22, 24, 27, 28, 45, 46. See also Mc- Elmo and Morrison.

Denver Basin: Cannon, 10; Em- mons, Cross, and Eldridge, 2; Marsh, 46.

dinosaur: Cope, 44; Hatcher, 5; Holland, W. J., 1 ; Lee, W. T., 5 ; Marsh, 10, 12, 17, 24, 27, 45; Riggs, 1; Riggs and Farrington, 1; Skiff, 1; Williston, 1.

Gunnison: Emmons, Cross, and Eldridge, 1.

Hahns Peak district: George and Crawford, 1.

La Plata: Cross and Purington, 1; Cross and Ransome, 1.

mammal: Marsh, 14, 15, 22.

Morasaurus agilis: Gilmore, 1.

Morrison, dinosaurs: Lee, W. T., 5.

Morrison: Cross, 24; Emmons, Cross, and Eldridge, 2; Hatcher, 6; Jones, T. Rupert, la; Lee, 7a; Marsh, 6 to 19, 22, 24, 27, 28, 45, 46; Stanton, 3; Stose, G. W., 1.

Ostracoda: Jones, T. Rupert, la.

reptilia (Stegosaurla): Marsh, 6, 9, 11, 16, 24, 32.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Rio Blanco County: Gale, 5.

Sauropoda: Marsh, 13.

Sundance: Butters, 2.

Telluride: Cross and Purington, 1.

Jurassic. — Continued.

vertebrate fossils, Denver Basin: Etaimons, Cross, and Eldridge, 2.

Jura-Trias. Stratigraphy. General: Broadhead, 2; Cross, 22;

Endlich, 5; Girty, 2; Hallowell,

1; Hewett, 1; Holmes, 2, 6;

Lakes, 5,67, 143, 165; Stevenson,

7; White, 23, 26; Woolsey, 1. Arkansas Valley: Gilbert, 6. Boulder: Henderson, J., 10, 11. Grand River district: Peale, 12. northwestern Colorado: Hewett,

1; White, 4. ore iu/ Lakes, 135. Ouray, Camp Bird mine: Titcomb,

Palmer Lake : Cannon, 9. San Juan: Comstock, 7; Read, 4. southeastern division: Endlich, 4;

Stevenson, 8. southwestern Colorado: Hills, R.

C, 2. Paleontology. Bee also under Jurassic

and Triassic. General: Girty, 2; Lakes, 165;

White, 23. southwestern Colorado: Hills, R.

C, 2.

Kangaroo formation: Crawford, 4.

Kaolin, Gunnison County, Waterfall

mine: Eakins, 3. production 1888: Day, 4 — 1895:

Rothwell, 4. Kaolinite: Milch, 1. Kenosha Range: Bechler, 1. Kiowa County, map: Clason Map Co. Kit Carson County, map: Clason Map

Co. water supply: Darton, 9, 13; Hay,

Robert, 2. Kokomo, ore deposits: Emmons, 12. Tenmile district, mines described:

Tro, 1. Kremmling, reservoir site: Quinton, J.

H.,1. Lafayette, coal from, tested: Fernald,

1; Parker, Holmes, and Camp- bell, 2.

Indbx

Lafayette. — Continued.

coal: Emmons, Cross and Eld- ridge, 2; Lakes, 6. Simpson mine: Rust, 1.

La Jara, Conejos County, turquoise: Sterrett, 3.

La Junta, artesian water, analysis: Clarke, F. W., 9. hydrology: Newell, 6. See also Darton, 9, 13.

Lake City. See also Hinsdale County, geology and ore deposits: Irving

and Bancroft, 1. gold: Irving, 3. hinsdalite, Golden Fleece mine;

Larsenand Schaller,l; Schaller,

map: U. S. G. S. mines. Golden Fleece: Mg. Rept.,

ore, analysis of: Irving, 3. ore deposits: Irving, 3; Irving and

Bancroft, 1; Rlckard, T. A., 28;

Spurr, Garrey, and Ball, 1. ore treatment: Harding, 1. pyroxene-hornblende andesite:

Clarke, F. W., 8. rocks, analysis of: Clarke, F. W.,

silver: Irving, 3. triangulation : Gannett, S. S., 2.

Lake County. See also Leadville. geology, dynamic: Lakes, 5. map: Boehmer, 16.

Lake Fork: gold: Woolsey, 2. Gunnison River: Peale, 8. map: Boehmer, Ic. mines: Woolsey, 2. silver: Woolsey, 2.

Lamar quadrangle, map: U. S. G. S.

Landslides, General: Cross, 7; Lakes,

Alma, and rock streams: Patton,

Apishapa quadrangle: Stose, 1. Creede: Emmons and Larsen, 1. Cimarron: Cross, 1. effect of: Comstock, 7. Engineer Mountain: Cross, 41.

Landslides. — Continued.

Hahns Peak district: George and Crawford, 1.

Lake Fork of the Gunnison: Cross,

La Plata Mountains: Cross, Spen- cer, and Purington, 1.

Monarch-Garfield area: Crawford,

Monarch-Tomichi district: Craw- ford, 4.

Montezuma mining district, Sum- mit County: Patton, 7.

Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Ouray quadrangle: Cross, Howe, and Irving, 1.

Rico Mountains: Cross, 31; Cross and Ransome, 1; Cross and Spencer, 1; Ransome, 2.

Rock streams. Alma district: Pat- ton, 10, 41.

Rock streams. Engineer Mountain : Cross, 41.

Rock streams, Veta Peak: Patton,

San Juan Mountains: Howe, 2;

Lay, 1; Mitchell, G. E., 1. Telluride quadrangle: Cross and

Purington, 1.

La Plata County, Oeneral: Comstock, 7; Lindgren, 2.

altitudes: Wilson, H. M. et al, 3.

coal, analysis: Campbell, M. R., 6; Lakes, 157.

coal -fields: Clayton, 1; Cross, Spencer, and Purington, 1; Free- land, H. C, 1; Hills, R. C, 22; Lakes, 8, 45, 69, 157; Lee, H. A., 9; McNeill, 1; Storrs, 1.

cosalite: Hillebrand, 1.

geology, economic: Emmons, 7; Lakes, 78; Lee, H. A., 9.

gold ores: Lakes, 56; Petre, 1; Rickard, T. A., 9.

map: Clason Map Co.

mineral production: Burchard, H. C, 2, 3, 4; Hodges, 1.

minerals, analysis of: Clarke, F. W., 6.

Index

La Plata County. — Continued.

mines described: Cross, Spencer, and Purington, 1; Hartman, 1; Henderson, C. W., 4; Lakes, 87; Lee, H. A., 9; Petre, 1; Rlckard, T. A., 6.

ore deposits: Cross, Spencer, and Purington, 1; Freeman, 1; Ihl- seng, 1; Lakes, 143; Rickard, T. A., 28; Spurr, Garrey, and Ball,

rocks, analysis of: Clarke, F. W.,

8; Hillebrand, 11. rocks, eruptive: Peale, 9. uranium: Lee, H. A., 7. volcanic ash : Woolsey, 1.

La Plata Mountains, General: Endlich, 7; Freeman, 1; Holmes, 2.

amalgam: Freeman, 1.

augite monzonite, analysis : Clarke, F. W., 8.

augite syenite: Clarke, F. W., 8; Cross, Spencer, and Purington,

auriferous bog iron ore: Cross, Spencer, and Purington, 1.

basic dike rock: Clarke, F. W., 8; Cross and Spencer, 1.

bismuth: Hess, 3, 8.

camptonite, analysis of: Clarke, F. W., 9.

dibrite and diorite porphyry: Clarke. F. W., 8, 9; Cross, Spen- cer, and Purington, 1.

geology: Cross, 23; Cross, Spen- cer, and Purington, 1; Freeman, 1; Hills, R. C, 20; Lakes, 34, 84, 119, 127, 143; Petre, 1; Toll, R. H., 1.

glaciation: Atwood and Mather, 1; Davis, W. M., 8.

gold: Austin, W. L., 1, 2; Cross, Spencer, and Purington, 1 ; Free- man, 1; Lakes, 119.

hydrology: Cross, Spencer, and Purington, 1.

intrusive bodies: Hills, 20.

iron, bog, auriferous: Cross, Spen- cer, and Purington, 1.

milling: Freeman, 1.

La Plata Mountains. — Continued.

monzonite: Clarke, F. W., 8, 9;

Cross, Spencer, and Purington, 1. ore deposits: Lakes, 34, 84, 233,

243; Sweetser, 2. physiography : Cross, Spencer, and

Purington, 1; Freeman, 1; Lee,

H. A., 9; Walcott, 7. placer deposits: Cross, Spencer,

and Purington, 1. porphyritic lamprophyre: Clarke,

F. W., 8.

Parrott, telluride ore: Austin, W. L., 1.

quicksilver: Freeman, 1.

rocks described: Cross, 42.

silver: Cross, Spencer, and Puring- ton, 1; Freeman, 1.

structure: Hills, 20.

syenite, analysis of: Clarke, F. W.,

syenite porphyry: Cross, Spencer, and PuHngton, 1.

La Plata quadrangle, map: Cross, Spencer, and Purington, 1 ; U. S.

G. S.

Laporte, fossils from, described : Meek,

F. B., 5. Laramie Hills: Hague and Emmons,!. Larimer County, building stone: Lee,

H. A., 9. cement material: Martin,!.

geology, economic: Emmons, 7;

Lee, H. A., 9. gypsum: Lee, H. A., 5. map: Clason Map Co., 22. marble. Fort Collins: Merrill, 4. mineral production: Henderson, C.

W., 4. triangulation : Gannett, S. S., 1. La Sal Creek, carnotlte from: Hille- brand and Ransome, 1. vanadium: Hess, 1; Mg. World, 2; Lindgren, 9. La Sal, carnotlte, analysis of: Ohly, 12. La Sal Mountains, copper: Lakes, 67. geology : Lakes, 67. gold: Lakes, 67. silver: Lakes, 67. La Salle-Paradox district, copper: Mg. Rept., 40.

Index

Las Animas, Arkansas River: Free- man and Bolster, 2.

glacier: Stone, 3.

Mesa de Maya: Keyes, 1.

Purgatory River: Freeman and Bolster, 2.

Las Animas County, building stone: Foster, Wm., 1; Lakes, 95; Mer- rill, 4.

coal, Tercio field: Plumb, 1.

coal washing: E. and M. J., 22.

geology, dynamic: Hanes and Par- sons, 1; Stone, 3.

geology, economic: Hawn, 1.

Gray Creek mine: Whiteside, 1.

map: U. S. G. S.

mines: Wheeler, 5.

physiography, Mesa de Maya: Keyes, 1.

sandstone: Foster, Wm., 1; Mer- rill, 4. La Veta district, coal : Hills, 25; Lakes,

231 ; Richardson, 2. La Veta Pass, geology: Gonkling, 1. Lay, gold : Fleck and Haldane, 1 ; Gale,

map : Gale, 4.

petroleum : Fenneman and Gale, 2.

placers: Fleck and Haldane, 1; Gale, 4. Lead, General: Dalzell, 2; Endlich, 2, 5; Frazer, 1; Hague, 1; Jerne- gan, 1; Lakes, 143, 219; Mg. Rev., 3 ; Nat. Conservation Com., 1; Stevenson, 3.

Aspen district: Henrich, 2; New- berry, 16.

Clear Creek County: Lawrence.

B. B., 2.

Crested Butte: Warren, E. R., 2.

Cripple Creek: Rickard, 14.

Georgetown: Spurr, Garrey, and Ball, 1.

Hall Valley: Jernegan, 2.

Idaho Springs: Spurr and Garrey, 2; Spurr, Garrey, and Ball, 1.

Lake City: Irving and Bancroft, 1.

Leadville: Blow, 1; Emmons, 2, 9, 11; Emmons and Irving, 1; Free- land, F. T., 1; Warwick, la.

Lead. — Continued.

mining: Blake, W. P., 3; Van Wag- ener, T., 2.

Monarch-Garfield : Crawford, 3.

Monarch-Tomichi district: Craw- ford, 4.

Montezuma : Patton, 7 ; Ritter, 8.

Ouray County: Cross, Howe, and Irving, 1 ; Cross, Howe, and Ran- some, 1 ; Cross and Purington, 1 ; Kedzie, 1.

production, general: E. and M. J., 38; Lee, H. A., 1, 8, 9; Tongo, 14—1883-1884: Williams, A., 1— 1885-1891 : Day, 1, 2, 3, 4, 5, 6. 7, 8, 9, 10—1885: E. and M. J., 10— 1887: Mg. Ind., 1—1892-1894: Rothwell, 1, 2, 3—1896: Min. Ind. and Rev., 9; Rothwell, 5—1897- 1899: Rothwell, 6, 7, 8—1899: Day, 12—1900: Day, 13; Struth- ers, 1 — 1901: Day, 14; Downer, F. M., 1, 2; Struthers, 2—1902: Ores and Metals, 6; Mines and Mining, 2; Struthers, 3—1903: Day, 16; Eckel, 2; Mg. Rept, 34; Newland, 1—1904: Day, 17; Judd, 1; Mines and Mining, 3; Ores and Metals, 8 — 1905: Day, 18; Ingalls, 4; Ores and Metals, 9 — 1906-1907: Ingalls, 5, 6; Thom, 1, 2—1908: Collins, G. E., 7; Hen- derson, C. W., 1; Ingalls, 7 —

1909: Collins, G. K, 8; Ingalls, 8—1910: Fay, 1; Henderson, C. W., 4; Siebenthal, 6; VanWag- nen, T. , 4; Warwick, 4—1911: Collins, G. E., 11; Henahen, 1; Henderson, C. W., 5; Of, 1; Par- ker, E. W., 7.

purchasing of ores: Hobart, 1.

Red Mountain: Schwartz, 1.

Rico quadrangle: Cross and Ran- some, 1; Ransome, 2.

Rosita-Silver Cliff district: Lakes.

sampling: Hobart, 1.

San Juan region: Endlich, 3; Ihl- seng, 1.

silver-zinc deposits, and, Monte- zuma: Ritter, 7.

Index

Lead. — Continued.

smelter, blast furnace: Dwight, 1.

smelters, 1888: Day, 4.

smelting at Leadville: Emmons

and Becker, 3. South Park: Lakes, 115.

Taylor Peak and Whitepine: Harder, 2.

Tenmile district: Emmons, 27. Whitepine and Taylor Peak: Harder, 2.

Leadville, General; Carlyle,l; Emmons, 1, 2, 9; Endlich, 1; Hunt, 5; Lakes, 10; Lee, H. A., 9; Lind- gren, 2; Peale, 6; Rath, 1; Ray- mond, 12; Science, 2; Tonge, 8; Warwick, la; Weunsch, 6.

bismuth: Hess, 3; Ingalls, 8; War- wick, 1, 2.

building stone : Lakes, 94.

cadmium: Siebenthal, 6.

calamine: Farrington and Tillot- son, 1.

California Gulch : Lakes, 21.

copper: Douglas, 1; Emmons, 2, 21; Rothwell, 1; Snedaker, 3; Warwick, la.

geology, downtown district: Em- mons and Irving, 1.

geology, ore deposits: Ameling, 2; Blow, 1; Emmons, 2, 7, 20; Fos- sett, 1; Hayden, 14; Ihlseng, 3; Keeler, 1; Lee, H. A., 9.

geology. Pleistocene: Capps and Leffingwell, 1.

geology, structural, fault of Yankee Hill: E?mmons, 9; Shedd, 1.

geology, structural, folding: Bulk- ley, 1; Emmons, 9.

geology, structural: Barker, F. L., 1; Emmons, 2, 9; Emmons and Irving, 1; Freeland, F. T., 1; Lakes, 5, 6, 21, 150, 196; Miller, G. W., 1; Posepny, 1; Rolker, 2; Spurr, Garrey, and Ball, 1; Van Hise, 6;. Warwick, la; Weunsch,

geology: Lakes, 196; Mg. and Sci. Press, 7, 9; Raymond, 11.

Lead vi fie. — Continued.

glaciation: Capps, 1; Capps and Leffingwell, 1; Westgate, 1.

gold: Blow, 1, 2; Boehmer, 1; Em- mons, 2; Lakes, 16, 22, 82; Pearce, 15; Tonge, 8; Warwick, la.

hydrology: Capps and Leffingwell,

Igneous rocks: Cross, 6a; Em- mons, 9.

Iron Hill: Argall, G. O.. 1; Blow. 1.

iron ore: Chauvenet, 8; Kimball, 3; Putnam, 1; Rolker, 1; Vinton, 3; Warwick, la.

lead carbonates, California Gulch: Irving, 1.

lead smelting: Emmons and Becker, 3.

lead: Blow, 1; Emmons, 2, 9, 11; Emmons and Irving, 1; Free- land, 1; Warwick, la.

limestone, blue and white, analyses of: Clarke and Hillebrand, 1.

manganiferous iron ore: Elmmons, 21; Warwick, la.

manganiferous silver ores: Harder, 1, 3, 4; Penrose, 1.

manganiferous ores: Tonge, 8; Weeks, J. D., 1.

map: Baldwin, 1; Boehmer, la; Caps, 1; Emmons, 2, 9; Emmons and Irving, 1; Howell, 1; Keeler, 1; Page, Nichols and Co., 1; Rob- inson, 1; U. S. G. S.; Ward, E. S.. 1.

metallurgy, milling: Armitage, 1; Emmons, 9; Gayard, 1.

milling: Ralston, O. C, 2.

minerals, analysis of: Clarke and Hillebrand, 1.

minerals: Dana, E. S., 6.

mining and mineral production: Butler, H. C, 1; Burchard, H. C, 1, 2, 3, 4; Callbreath, 4, 6; Chau- venet, 9; Collins, O. E., 3, 6, 6, 9; Emmons, 9; E. and M. J., 10, 16, 21, 24, 29, 31; Freeland, 1; Heim- berger, 1; Henderson, C. W., 4; Hollister, 1; Ingalls, 2; Lakes, 5;

Indbx

Lead vi lie. — Continued.

Miller, G. W., 1; Mg. Rev., 1; Mg. Rept, 24; Moore, 1; Ray- mond, 1, 4, 5, 9, 10; Rickard, T. A., 1; Roth well, 5, 6; Schwartz, 2; Scott, W. A., 1; Tonge, 8; Warwick, la; Weunsch, 3; W. P. H., 1.

mining, downtown: Lakes, 82; McLeod, R. F., 1.

mining, leasing system: Lawrence,

D. B., 1.

mining, pumping: Warwick, la.

mining, section from shafts: Van Wagenen, 1.

mining, South Park: Lakes, 5.

minium: Hawkins, 1.

nickel: Argall, P., 3.

ore deposits. Iron Hill: Blow, 1.

ore deposits, Iron Hill, sulphides: FYeeland, 1.

ore deposits, origin of: Ameling, 1; Blow, 1, 2; Boehmer, 2; Em- mons, 2, 9, 11; Emmons and Irv- ing, 1; Smith, J. A., 1; Rolker, 2.

ore deposits, Sawatch Range: Spurr, Garrey, and Ball, 1.

ore deposits, secondary enrich- ment: Boehmer, 2.

ore deposits, sulphide. Iron Hill: Freeland, 1.

ore deposits: Argall, G. O., 2; Bancroft, George J., 6; Butler, G. M., 2; Butler, H. C, 2; Em- mons, 9, 12, 22; Emmons, W. H., 4; E. and M. J., 18; Henrich, 1; Irving, 4; Keck, 1; Lakes, 5, 21, 143, 214, 233, 243 ; Lee, H. A., 9 ; Mg. and Sci. Press, 6; Matteson, W. G., 2, 3 ; Pearce, 15 ; Posepny, F., 1; Ralston, O. C, 1; Rickard, T. A., 28; Robbins, 1; Rolker, 2; Spurr, Garrey, and Ball, 1; Tonge, 8; Warwick, 2; Weed, 1; Weunsch, 1, 2, 5.

ores, analysis of : Freeland, 1; lies, 3; Penrose, 1; Rolker, 2.

Lead vi lie. — Continued.

petrography: Cross, 6a; Emmons,

physiography: Emmons, 9; Free- land, 1; Lee, H. A., 9; Weunsch,

placer mining, California gulch: Emmons, 9; Lakes, 21.

placer mining: Warwick, la.

porphyry, white: Clarke and Hille- brand, 1; Emmons, 3, 9; Julien, 1; Lakes, 5, 21.

Prospect Mountain, quartz porphy- ry: Clarke, F. W., 9.

rhodochrosite : Kunz, 1.

silver: Blow, 1; ETmmons, 2, 9, 11; Emmons and Irving, 1; Free- land, 1; Matteson, W. G., 1; Rolker, 2; Shedd, 1; Tonge, 8; Warwick, la; Weunsch, 4.

silver-lead ores: Emmons, 19.

smelting: Doolittle and Jarvis, 1.

Twin Lakes, glaciated area: Capps, 1; Capps and Lefflngwell, 1; Westgate, 1.

vanadium: lies, 3.

water problem: Lakes, 101.

Yak mining company: Armlngton and Stotesbury, 1.

zinc: Arg&ll, G. O., 2; Burton, 1; Clerc, F. L., 1; Emmons, 2, 9; Freeland, 1; Henderson, C. W., 5; Mg. World, 7; Warwick, 1; Weed, 1.

Lilys Park: White, 4.

Lime, Boulder district: Fenneman, 5.

northwestern Colorado: Hender- son, J., 13.

production: Day, 18; Thom, 1, 2 — 1909-1911: Burchard, E. F., 4, 6, 8; Parker, E. W., 7.

Limestone, General : Eckel, 1; Emmons,

2; Lakes, 51, 205, 235. Apishapa quadrangle : Stose, G. W.,

cement: Eckel, 1. Chaffee County: E. and M. J., 15. Elk Mountains: Emmons, Cross,

and Eidridge, 1.

Index

L i mesto ne. — Continued.

Elmoro quadrangle: Hills, R. C,

Engineer Mountain: Cross, 41.

Gunnison: Chauvenet, 6.

Jurassic: Hague and Emmons, 1.

Monarch-Garfield : Crawford, 3.

Monarch-Tom ichi : Crawford, 4.

Nepesta quadrangle: Fisher, 1.

northern Colorado: Henderson, J.,

ore deposits in: Lakes, 5.

Perry Park: Kruger, Hamilton, and Enriquez, 1.

plains area: Darton, 9.

production 1889-1905: Day, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18—1906-1907: Thorn, 1,2— 1909: Burchard, E. F., 4.

Pueblo quadrangle: Gilbert, 7.

Rico, ore bearing: Cross and Spen- cer, 1.

Rico quadrangle: Cross and Ran- some, 1.

Silverton: Cross, Howe, and Ran- some, 1.

Spanish Peaks: Hills, R. C, 25.

Walsenburg: Hills, R. C, 15.

Limon quadrangle, map: U. S. G. S.

Lincoln County, map: Clason Map Co.

Lithographic stone: Lakes, 51. production, 1900: Day, 13.

Little Colorado Valley, geology: Ward, L. F., 7.

Little Crow Creek, Neocene: Dall and Harris, 1.

Little Snake River, trachyte: Zirkel, 1.

Little Snake Valley: Hague and Em- mons, 1.

Little Thompson River, pre-Cambrian : Van Hise, 1. paleontology: White, 6b.

Lizards Head, erosion: Endlich, 8.

Lobatos, Rio Grande River: Freeman and Bolster, 3.

Lodore Canyon: King, 1; Powell, 1.

Loess: Emmons, Cross, and EHdridge, 2; Fenneman, 2.

Logan County, map: Clason Map Co.

London Mountain, ore deposits: Pat- ton, 10.

Lone Cone, San Juan: Darton, 8.

Longs Peak, General: Hague and Em- mons, 1; Marvine, 1.

glaciation: Orton, 2.

granite, analysis of: Hague and Emmons, 1.

granite: Zirkle, 1.

Lost Canyon, hydrology: Schuyler, 1.

Louisville, coal: Emmons, Cross, and Eldridge, 2; Lakes, 6. gas: vanDiest, 7.

Lovelandr gypsum: Lakes, 141. quadrangle, map: U. S. G. S.

Lulu Pass: Draper, 2.

Lyons, geology: Butters, 2.

sandstone: Fenneman, 5; Hender- son, 10; Merrill, 4. Magmatic differentiation.

Cripple Creek ores: Lindgren and

Ransome, 3. Georgetown, origin of metals: Spurr, Garrey, and Ball, 1. Pikes Peak granite: Mathews, E.

B., 1. Rosita Hills, Silver Cliff: Cross,

Spanish Peaks: Hills, R. C, 25. Magnesite: Ohly, 2. Magnolia, geology, economic: Emmons,

7; Lindgren, 6. minerals, new: Dana, E. S., 1. olivinite dike: Whitaker, 1. Mammalia, Oeneral: Adams, G. L, 2;

Allen, 16; Marsh, 14, 16, 21, 22.

23, 30, 32, 41, 43; Matthew, 2, 3,

4,5. antelope-goat fauna, Manitou: Cra-

gin, 5. Bridger formation: Scott, 2. capricorns. Pikes Peak region:

Cragin, 4. catalogue: Trouessart, 1, 2. Cenozoic: Osborne, 4. Dinocerata: Marsh, 21. elephant or mastodon: Berthand,

1; Rockwell, 1; WoodhuU, 1. Elotherium, restoration: Marsh, 43.

Index

aoo

Mammalia. — Continued.

Huerfano formation: Hills, R. C,

human skull, Denver: Belt, 1.

Jurassic: Marsh, 14, 15, 46.

Laramie: Hatcher, 3.

Loup Fork: Cope, 36.

Miocene: Cockerell, 23; Cope, 53, 57; Lakes, 112; Marsh, 41; Mat- thew, 5; Scott, 1.

Pleistocene : Cockerell, 50.

ruminant, Megacerops: Leidy, 2.

Tertiary, Rhinoceridae : Cope, 48.

Tertiary: Cope, 8, 9, 10, 11, 13, 38, 42, 45; Marsh, 23, 41; Matthew, 2, 6; Osborne, 4; W , J. L., 1.

White River: Cope, 58, 59, 70.

Mancos, hydrology: Newell, 14.

Mancos formation. See list of forma- tions described, page 479. Manganese, General: Harder, 1, 3, 4; Lakes, 143; Penrose, 1.

iron deposits, and, Cebolla River: Lakes, 26.

iron ores, and, production 1899: Day, 12—1906: Thorn, 1; Ingalls, 5—1910: Burchard, E. F., 6; War- wick, 4.

iron ores, and silver, production 1907: Thorn, 2.

iron ores, and, Leadville : Emmons, 9, 21; Warwick, la.

Leadville: See "production" be- low; Harder, 1, 3, 4; Penrose, 1; Tonge, 8; Weeks, 5.

Monarch-Garfleld area: Crawford,

Monarch-Tomichi district: Craw- ford, 4.

ores, Leadville : Penrose, 1 ; Tonge, 8; Weeks, 5.

Ouray County: Kedzie, 1.

production, 1889-1905: Day, 5, 6, 7, 8, 9, 10. 11, 12, 13, 14, 15, 16, 17. 18—1892-1899: Roth well, 1, 2, 3, 4. 5, 6, 7, 8—1894: Weeks. 5— 1900-1902: Struthers, 1, 2, 3— 1901: Lee, H. A., 8—1903: New- land. 1—1904: Judd, 1—1905- 1909: Ingalls, 4, 6, 8—1909-1911:

Manganese. — Continued.

Burchard, E. F., 2, 7—1911: Parker, E. W., 7.

silver ores, Leadville: Harder, 3.

Manitou, Archean-Potsdam contact: Hovey, 1.

Garden of the Gods: Hayden, 19; Peale, 5.

Garden of the Gods, erosion in: Endlich, 8.

Garden of the Gods, geology: Crosby, 3; Peale, 1.

gas, origin: Strieby, 1.

geology, stratigraphic : Finlay, G.

I., 3; Minerals, 1. geology, structural embayment :

Crosby, 3. geology: Cross, 22. mineral waters: Peale, 1, 5;

Strieby, 1. paleontology, fossils described :

Cragin, 4; Walcott, 14. physiography: Darton, 13. sandstone: Merrill, 4. water analysis: Lee, H. A., 9;

Peale, 1; Strieby, 1.

Maps, Oeneral: Brewer, 1; Gannett, H., 1; Gardner, J. T., 1; Gilbert, Marvine, and Howell, 1; Hay- den, 22. 25; King, 1; Ladd, 1; Marcou, J.. 1; Marshall, R. B., 2; Powell, 5; Rhoda, 3; Science, 1; Thompson, 2; Vivian, 1; Wheel- er. G. M.. 1, 2, 6.

Adams County: Clason Map Co.

Albany quadrangle: U. S. G. S.

Algonkian and Archean : Van Hise,

Alma, geologic, topographic and sections: Patton, 10.

Anthracite quadrangle: U. S. G. S.

Anthracite and Crested Butte: Cross, 23; Emmons, Cross, and Eldridge, 1. . Apishapa quadrangle: Stose, G. W., 1; U. S. G. S.

Arapahoe County: Clason Map Co.

Archean, granitic and Paleozoic exposures: King, 1.

Index

Maps. — Continued.

Archean and Algonkian : Van HiBe,

Arkansas Valley : Clason Map Co. ; Darton, 13; Gilbert, 6; Howell, 1; Thompson, 2.

Arroyo quadrangle: U. S. G. S.

Aspen: Spuir, 1; U. S. G. S. Bakers Park: E:ndlich, 2. Bent County: Clason Map Co. Bibliography: Marcou, J., and Mar-

cou, J. B., 1. Big Springs: U. S. G. S. Black Hawk: U. S. G. S. Book Cliffs coal field: Richardson,

Book Cliffs and Grand River Val- ley: Peale, 8. Boulder County oil field: Fenne-

man, 2. Boulder County oil and clay dis- tricts: Langridge, 1. Boulder County, Sugarloaf district:

Crawford, 1. Boulder County tungsten field:

George, 3. Boulder County: Clason Map Co.;

Drumm, 1; van Diest, 4. Boulder district: Fenneman, 5. Boulder quadrangle: U. S. G. S. Boulder and Larimer counties:

Martin, 1. Breckenridge quadrangle : Ran-

some, 5; U. S. G. S. British Provinces and United

States, geological: Blake, W. P.,

lb. Cache la Poudre and Upper Platte

valleys: Clason Map Co. Camp Bird: Purington, 2. Canon City coal field: Washburne,

Canon City quadrangle: U. S. G. S. Castle Rock: Lee, W. T., 6; U. S.

G. S. Catlin quadrangle: U. S. G. S. Central City mining region: End-

lich, 1. Central City quadrangle: U. S. G.

S.

M aps. — Continued.

Central City special: U. S. G. S.

central Colorado: Hayden, 31;

Wheeler, G. M., 1. Chaffee County, Monarch mining

district: Crawford, 3. Chaffee County, Monarch-Tomichi

district, geologic, topographic,

sections: Crawford, 4.

Chaffee, Fremont, Jefferson coun- ties, copper deposits: Llndgren,

Chalk Creek: Chapman, 1.

Cheyenne County: Clason Map Co.

Cheyenne Wells quadrangle: U. S. G. S.

Clear Creek County: Clason Map Co.; Couzens, 1.

coal field, northern area, near Den- ver: Marvine, 1.

coal fields. Rocky Mountains: Storrs, 1.

coal fields: George, 6; Lakes, 6, 237; Parker, E. W., 6.

Colorado: Bonsall, 1; Bonsall and Kellogg, 1, 2; Brown, M. R., 1; Clason Map Co., 4; Colton, 1, 2 3; Cram, 1; Emmons, 28; Gan- nett, 26; George, 6, 7; Gilbert, Marvine, and Howell, 1; Gilpin, la; Hayden, 31; Hinman, 1; Hitchcock, C. H., 1; Hitchcock and Blake, 1; International Boundary Commission, 1; John, 1; Johnson, A. J., 1; King, 1; Mitchell, S. A., 1; Nell, 1, 2. 4, 6; Newell, 1, 2; Nicholson, W. L., 1 ; Rand McNally and Co., 1, 2, 3, 4, 5, 6, 7, 8; Silversparre, 1; Thayer, 1, 2, 3; U. S. Depart- ment of Interior, 1, 2; Van Ant- werp, Bragg and Co., 1; Watson, G., 1; White, E. L., 2; Williams, H. T.; Williamson-Haffner Co.,

Colorado Springs coal fields: Gold- man, 1.

Colorado Springs: Clason Map Co.; Finlay, 1.

Index

M aps. — Continued. .

Colorado Springs and vicinity: Hayden, 19.

Colorado Springs quadrangle: U. S. G. S.

Conejos County: Clason Map Co.,

Continental Divide: Clason Map

Co.

Costilla County: Clason Map Co.

Costilla County, Grayback mining district: Patton, 8.

Cottonwood : Chapman, 1.

Crested Butte quadrangle : U. S. G. S.

Cripple Creek region: Cross and Penrose, 1; Lindgren and Ran- some, 1, 2, 3 ; U. S. G. S.

Danlorth Hills: Gale, 3; U. S. G. S. Danforth Hills, coal fields: Gale,

Delta County: Clason Map Co. Denver Basin: Emmons, Cross,

and Eldridge, 2. Denver County: Clason Map Co. Denver-Greeley district : Clason

Map Co. Denver irrigation district: Clason

Map Co. Denver and northern Colorado.

Clason Map Co. Denver and South Platte valley:

Clason Map Co. Denver: Clason Map Co.; U. S. G.

S.; Williamson-Haffner Co., 3,4. Dolores: Fischer, 1. Dolores and San Miguel rivers:

Peale, 8. drainage: Hayden atlas. Durango coal field: Taff, 1. Durango quadrangle: U. S. G. S. Durango-Gallup coal fields: Schra-

der, 1; Shaler, 1; Shaler and

Gardner, 1; Taff, 1. Eagle River: Peale, 7. Eagle County, gypsum deposits:

Burchard, E. F., 5. eastern Colorado, Arkansas River

to Wyoming line: Hayden, 19.

M aps. — Continued.

east of Rocky Mountains, geolog- ical chart: Bradley, 1.

eastern and southern Colorado: Wheeler, G. M.. 1.

eastern Colorado: Darton, 9.

Economic: Hague, 1; Hayden, 31.

EHbert County: Clason Map Co.

Elevations of certain datum-points on the Great Lakes and rivers in the Rocky Mountains: Ladd, 2.

EHk Mountains: Hayden, 19; Peale,

Elk Range: Holmes, 1.

Elmoro quadrangle: Hills, R. C, 24; U. S. G. S.

El Paso County: Clason Map Co.

Engineer Mountain folio: Cross,

Engineer Mountain quadrangle: U. S. G. S.

Florissant: Scudder, 15.

Fort Collins quadrangle: U. S. G. S.

Fremont, Chaffee and Jefferson county copper deposits: Lind- gren, 8.

Front Range: Cannon, 9.

Frying Pan: Bohmer, Ic.

geological map of Colorado: George, 7.

geological map of North America: Willis, 3.

geological map of the United States: Hitchcock, C. H., 1.

geographical work of the United States Geological and Geograph- ical Survey of the Territories: Wilson, A. D., 4.

Georgetown: Spurr, Garrey, and Ball, 1; U. S. G. S.

Gilpin County: Clason Map Co.; Couzens, 1.

Granada quadrangle: U. S. G. S.

Grand County: Clason Map Co.

Grand Hogback and Danforth Hills coal fields: Gale, 3, 8.

Grand Hogback quadrane: U. S. G. S.

Index

M aps. — Continued.

Grand Mesa coal fields: Lee, W.

T., 10, 13. Grand River valley and Book

Cliffs: Peale, 8. Grand Valley: Clason Map Co. granitic, Archean and Paleozoic

exposures: King, 1. Grayback. mining district, Costilla

county: Fatten, 8. Great Plains: Hay, R., 2. Greeley quadrangle: U. S. G. S. Gunnison County : Clason Map Co. ;

Hill, J. M., 1. Gunnison to Grand River: Peale,

Gunnison River: Peale, 7, 8. Gunnison and Eagle rivers: New- tons, 1. Gunnison Valley: Clason Map Co. Hahns Peak: Gale, 1; George and

Crawford, 1. Henrietta Park: Boehmer, Ic. Henrys Pork coal field: Gale, 7. Higbee quadrangle; U. S. G. S. Huerfano Park quadrangle: U. S.

G. S. Idaho Springs special: U. S. G. S. Ignacio quadrangle: U. S. G. S. Irrigation maps: Wilson, H. M.,

1,2. Jefferson County: Clason Map Co. Jefferson, Chaffee and Fremont

county copper deposits: Lind-

gren, 8. Jensen, Utah-Colorado: Gale, 8; U.

S. G. S. Kiowa County: Clason Map Co. Kit Carson County: Clason Map

Co. ; U. S. G. S. Lake City quadrangle: Irving and

Bancroft, 1; U. S. G. S. Lake County: Boehmer, lb. Lake Fork: Boehmer, Ic. lakes and glacial period: King, 1. Lamar quadrangle: U. S. G. S. La Plata County : Clason Map Co. ;

Cross, Spencer, and Purington, 1. La Plata quadrangle: U. S. G. S. Larimer County: Clason Map Co.

Maps. — Continued.

Las Animas quadrangle: U. S. G. S.

Lay placers: Gale, 4.

Leadville: Baldwin, 1; Boehmer, la; Capps, 1; Emmons, 2, 9; Emmons and Irving 1; Howell, 1; Keeler, 1; Page, Nichols and Co., 1; Robinson, 1; U. S. G. S.; Ward, B. S., 1.

Llmon: U. a G. S. Lincoln County: Clason Map Co. Logan County: Clason Map Co. Loveland quadrangle: U. S. G. S. Mesa County: Clason Map Co. Mesa de Maya: Keyes, 1; U. S. G.

S. Mesozoic and pre-Mesozocl: King,

Middle Park, Hot Springs and

Upper Grand: Marvlne, 1. Middle Park: Belcher, 1; Ladd, 1. Mining districts of Colorado: Hill

and Lindgren, 1. Mississippi, country drained by:

James, E., 2. Monarch and Gunnison: Chapman,

Monarch-Garfield area: Crawford,

Monarch-Tomichi district: Craw- ford, 4. Montrose County: Clasoi;! Map Co. Montezuma mining district, Sum- mit County: Patton, 7. Morgan County: Clason Map Co. Mount Carrizo quadrangle: U. S.

G. S. Mount Lincoln, quadrangle: End-

, 1. Mount Olympus quadrangle: U. S.

G. S. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1; U. S.

G. S. Nepesta quadrangle: Fisher, 1;

U. S. G. S. northeastern Colorado, foothills:

Martin, 1. Niwot quadrangle :U. S. G. S.

Index

4oa

M aps. — Continued.

north central Colorado: Hender- son, J., 10.

northeastern Colorado : Clason Map Co. ; Williamson-Haff ner Co., 2.

northern Colorado: Clason Map Co.; Ladd, 2.

northwestern Colorado: Hayden, 31 ; Marvine, Peale, E?ndlich, and White, 1 ; White, 4, 26.

ore deposits illustrated: Lakes, 5.

orographic disturbances: King, 1.

Otero Counter: Clason Map Co.

Ouray, Red Mountain: Fischer, 1.

Ouray: Clason Map Co.

Ouray quadrangle: Cross, Howe, and Ransome, 1; Cross, Howe, and Irving,- 1; Irving, 2; U. S. G. S.

Paleozoic, Archean and granitic exposures: King, 1.

Phillips County: Clason Map Co.

Pikes Peak quadrangle: Cross, 24; U. S. G. S.

Pikes Peak special: U. S. G. S.

Placerville, San Miguel County: Fleck, 3.

Platte Canyon quadrangle: U. S. G. S.

pre-Cambrian: Van Hise, 2; Van Hise and Leith, 1.

pre-Mesozoic and Mesozoic expos- ures: King, 1.

primary triangulation : Wilson, A. D., 6.

Prowers County: Clason Map Co.

Pueblo County: Clason Map Co.

Pueblo quadrangle: Gilbert, 7; U. S. G. S.

Rabbit Ears district: Grout, Wot- cester, and Henderson, 1.

Rangely oil field: Gale, 5.

Rangely quadrangle: Gale, 8; U. S. G. S.

Rico Mountains: Cross and Spen- cer, 2; Ransome, 2.

Rico quadrangle: Cross and Ran- some, 1; Cross and Spencer, 1; U. S. G. S.

Maps. — Continued.

Rio Blanco County, Coal Creek valley: Gale, 2.

Rio Blanco County, Rangely oil field: Gale, 5.

Rio Grande County: Clason Map

Co. Rocky Mountain district: Emmons,

20; Hague and Emmons, 1;

Long, 1. Rosita HUls and SHver Cliff:

Cross, 27. Routt Coimty, carnotite deposits:

Gale, 6. Routt County, Hahns Peak:

George and Crawford, 1. Routt County, Lay placers: Gale,

Routt County: Clason Map Co. Saguache County: Clason Map Co. Sanborn quadrangle: U. S. G. S. San Juan: Chittenden, 1; Clason

Map Co.; Comstock, 1; Holmes,

2; Howe, 2, 3; Ihlseng, 1;

Thayer, 4; Williams, H. T., 1. San Luis Valley: Clason Map Co.;

Siebenthal, 4. San Miguel quadrangle: Fischer, E. San Miguel and Dolores rivers:

Peale, 8. Sedgwick: Clason Map Co. Sierra Abajo: Holmes, 6. Silver Cliff and Rosita Hills:

Cross, 27. Silver Plume special: U. S. G. S. Silverton quadrangle: Clason Map

Co. ; Cross, Howe, and Ransbme,

1; Ransome, 3; U. S. G. S. south central Colorado: Hayden,

southeastern Colorado: Hill, R. T.,

South Park coal field: Washburne,

South Park: Bechler, 1; Peale, 6. South Platte, upper, and Cache la

Poudre valleys: Clason Map Co. South Platte valley and Denver:

Clason Map Co. southern Colorado: Newberry, 3.

Indbx

M aps. — Continued.

southwestern Colorado: Comstock, 7; Hayden, 31; St. John, 1.

Spanish Peaks: Endlich, 4; Hills, R. C, 25; U. S. G. S.

Spirit leveling in Colorado: Mar- shall, R. B., 2.

Springfield quadrangle: U. S. G. S.

Summit County, Montezuma min- ing district: Patton, 7.

Taylor Peak: Harder, 2.

Telluride: Clason Map Co.

Telluride quadrangle: Cross and Purington, 1 ; Purington, 2 ; U. S. G. S.

Tenmile quadrangle : Emmons, 27 ; U. S. G. S.

Tepee Buttes: Gilbert and Gulli- ver, 1.

Tertiary exposures: King, 1.

Timpas quadrangle: U. S. G. S.

topographic map of Colorado: George, 6.

Trinidad: Clason Map Co.

Trinidad region: Endlich, 4.

Two Butte quadrangle: U. S. G. S.

Uinta Basin, hydrocarbons: Eld- ridge, 6.

Una weep Canon: Peale, 8.

United States and British Prov- inces, geologic: Blake, lb.

Uncompahgre region, gypsum de- posits: Siebenthal, 1.

Uncompahgre Valley: Clason Map Co.

Ute Indian war: Rand, McNally and Co., 3.

Ute Pass : Crosby, 1.

Vernal coal field: Gale, 7.

Vilas quadrangle: U. S.'G. S.

Walsenburg quadrangle: Hills, R. C, 15; U. S. G. S.

Washington County: Clason Map Co.

Weld County: Clason Map Co.

western Colorado: Hayden, 31.

West Denver sheet: Gannett, 19.

west San Miguel: Holmes, 6.

Whitepine: Harder, 2.

M a ps. — Continued.

White River, lower, coal field:

Gale, 7. White River, gilsonite: Eldridge, 6.

White River Indian Reservation: Nell, 3.

White River quadrangle: Gale, 8; U. S. G. S.

Yampa coal field: Fenneman and Gale, 1, 2; Gale, 7.

Yuma County: Clason Map Co. Marble, General: Bailar, 3; Ehidlich, 1; Lakes, 51, 219, 222.

Gunnison County: Hall, C. L., 2; Stone Trades Jour., 1; Weston, 9. See also Yule marble.

Monarch-Garfield district: Craw- ford, 3.

Monarch-Tomichi district: Craw- ford, 4.

production 1886, 1889-1890, 1891, 1897, 1898, 1899, 1905: Day, 2, 5, 6,10,11,12,18—1893,1899: Roth- well, 2, 7 — 1907 : Thomas, K., 1— 1909, 1910, 1911: Burchard, E. F., 4, 6; Lange, 14.

l\ieblo quadrangle: Gilbert, 7.

Rock Creek and coal basin : Lakes,

Twin Mountain: Lakes, 221.

Yule Creek: Lakes, 226; Newberry, Marcellina Mountain, geology: Cross,

23; Rickard, T. A., 15. Marshall, coal, analysis; Grout, 1.

coal: Emmons, Cross, and Eld- ridge, 2; Hayden, 4, 15; Lakes, 6; Potter, W. B., 1.

Marshall, paleontology: Cockerell, Martin Canyon beds: Osborn, 4. McClellan Mountain, ice in rocks: Ber-

thoud, 3; Weiser, 1. Medicine Bow Range, General: Hague and Emmons, 1; King, 1.

Archean rocks: Hague and Em- mons, 1.

geological features: Hague and Emmons, 1.

granite: Hague and Emmons, 1.

Index

Medicine Bow Range. — Continued.

Huronian rocks: Hague and Em- mons, 1.

intrusive rocks: Hague and Em- mons, 1.

Lauren tian rocks : Hague and Em- mons, 1.

physical geography: Hague and Emmons, 1.

Meeker, asphaltum from: Lakes, 116. Mercury, native: Lakes, 174. Mesa County, coal: Woodruff, E. G., 1. map: Glason Map Co. mica: Sterrett, 5, 7. minerals: Hillebrand and Ran-

some, 1. ores: Hillebrand and Ransome, 2. production : Henderson, C. W., 2, 4. Mesa de Maya, map: Keyes, 1; Lee,

W. T., 11 ; U. S. G. S. Mesa Verde, Durango coal district: Lee, W. T., 11; Shaler, 2. physiography: Newell, 10. Mesa Verde formation. See li9t of for- mations described, page 479. Mesozoic. Stratigraphic. North Park: Hague and Emmons,

northern Colorado: Stevenson, 12. northwestern Colorado: White, 4,

pre-Mesozoic, and, map: King, 1. San Juan County: Comstock, 1. southeastern Colorado: Gilbert, 6. southern Colorado: Stevenson, 12. Paleontology. General: Blake, W. P., la; Cope, 13, 16, 19, 22, 25 to 29. 31, 32, 39, 40, 44; Endlich, 5; Marsh, 4, 39; Miller, S. A., 1; Peale, 7; Scud- der, 38; White, 2, 3, 9. Brachiopoda: Schuchert, 1. Bryozoa, bibliography and cata- logue of genera and species: Nickles and Bassler, 1. cockroaches: Scudder, 21, 22, 23. echinodermata: Clark, W. B., 2. Green River: White, 3. insects, bibliography: Scudder, 15.

Mesozoic. — Continued. Paleontology. — Continued, invertebrates: Stanton, 4. Lucina profunda: White, 12. moUusks: White, 2.

Mesozoic, Fortieth Parallel area, Colo- rado.

Big Thompson: Hague and Em- mons, 1; King, 1.

Box Elder Canyon: Hague and

Emmons, 1; King, 1. Cache la Poudre: Hague and Em- mons, 1; King, 1. Colorado Range: Hague and E!m-

mons, 1; King, 1. Cretaceous: Hague and Emmons,

1; King, 1. gypsum: Hague and Emmons, 1;

King, 1. Jurassic: Hague and Emmons, 1;

King, 1. Medicine Bow Range: Hague and

Emmons, 1; King, 1. North Park: Hague and Emmons,

1; King, 1. paleontology: Hague and Emmons,

1 ; King, 1. Park Range: Hague and Emmons,

1; King, 1. Rocky Mountain province: Hague

and Emmons, 1; King, 1. Triassic: Hague and Emmons, 1;

King, 1. Uinta Range: Hague and Emmons,

1; King, 1.

Metallurgy, General: Argall, 17; Em- mons, 2 ; Ingalls, 5 ; Parmelee, 1 ; Richards, 5; Thomas, K., 1; Tonge, 14; Traphagen, 1.

arrastre. La Plata Mountains: Freeland, 1.

blast furnace practice, Colorado Fuel and Iron Company, Pueblo : Potter, E. C, 1.

chlorination, general: Croll, 1.

chlorination, Colorado City: In- galls, 2.

chlorination, Cripple Creek: Ar- gall, 10; Ingalls, 2; Lakes, 92; Rothwell, 9; Wolcott, G. E., 1.

Mh)

Index

Metallurgy. — Continued.

chlorination, Florence: Small, 1.

chlorination vs. cyanidation: Mines and Minerals: Offenhaus, 1.

concentration, general: Armitage, 1; Richards, 3.

concentration, Camp Bird Mine: Purington, 3.

concentration, Gilpin County : Downey, 1.

concentration, Idaho Springs, Jack- son works: Lakes, 166.

concentration, tungsten: Richards and Locke, 1.

concentration, Wetherhill magnet- ic, Denver and Canon City: Wil- kens, 1.

cyanidation, general: Argall, 10a Bosqui, 1; Fulton, 1; Furman, 2 Parmelee, 5; Schneider, G. W., 1 Tonge, 3, 11; Wells, J. S. C, 1.

cyanidation, Boulder County : Leon- ard, 1; Packard, G. A., 1.

cyanidation. Camp Bird mine: Purington, 3; Titcomb, 1.

cyanidation. Cripple Creelc: Ar- gall, 16, 17,. 19; Baker, 1; Lakes, 70; Packard, 1; Roth well, 6; Wolcott, G. E., 2.

cyanidation, dioxide-cyanide proc- ess: Mg. Ind., 8.

cyanidation, Idaho Springs: Dow- ney, C. J., 2.

cyanidation, Liberty Bell mine: Bell, 1; Fulton, 1.

cyanidation, Livingston mill: Pack- ard, 1.

cyanidation, Portland mill: Chau- venet, 12; Edgerton, 1; Tippett,

cyanidation, silver ores: Draper,

cyanidation, telluride ores: Argall,

fuel economy in furnaces: Parkin- son, 1.

Moore-Clancy process, Victor: E. and M. J., 43.

ore dressing: Richards, 4.

ore reduction: Furman, 3.

M eta 1 1 u rgy . — Continued.

ore testing plant. Golden; Hena- hen, 1; Mg. and Sci. Press, 1.

ore treatment, general : Lee, H. A., 1; Raymond, 10; Smith, J. A., 1.

ore treatment. Lake City: Hard- ing, 1.

ore treatment, Leadville: lies, 1; Ralston, O. C, 2.

ore treatment, low grade ores: Traphagen, 1.

ore washing. Cripple Creek: Rich- ards, 9; Worcester, 3.

Russell process of treating silver ores : Morse, 1.

sampling, general: Brunton, 1.

sampling, concentrating and slim- ing tables, from: Bailar, 2. sampling, dry crushing: Argall, 8. smelting. See smelting.

Metamorphlsm, General: Blow, 1; Em- mons, 15; Endlich, 3, 4, 5, 7; Hayden, 6, 12, 14; Holmes, 2; King, 1; Marvine, 1, 2; Peale, 5, 7, 8; Stevenson, 3, 11; Zirkel, 1.

Alma: Patton, 10.

Aspen, ores: Van Hise, 6.

Bear Creek area: Emmons, W. H.,

bibliography, 1887-1888: Merrill, 1.

building stone, change in color: Lakes, 94.

coal, burning of lignite beds: Allen, J. A., 1.

coal, combustion of: Lakes, 192.

coal, contact metamorphism : Ste- venson, 14.

coal: Lakes, 169.

contact: Cross, 23.

contact deposits, Grayback: Pat- ton, 8.

contact deposits, La Plata Moun- tains: Lakes, 127.

contact deposits, Monarch-Tomichi : Crawford, 4.

contact deposits. Mosquito Range: Emmons, 9.

contact deposits, Rico Mountains: Cross and Spencer, 1.

Index

Metamorphism. — Continued.

contact deposits, Spanish Peaks: Hills, R. C, 25.

Clear Creek: Underbill, 4.

Cripple Creek district: Lindgren and Ran some, 3; Lakes, 18.

crystalline rocks: Pumpelly, 1.

dolomitization of limestone: Hen- rich, 2.

Durango quadrangle : Emmons, W. H., 1.

Elk Mountains: Holmes, 1.

fulgurite, Spanish Peaks: Hills, R. C, 16.

garnets in schist: Bailey, Rath, and Grider, 1.

Georgetown, alteration of wall rock : Spurr, Garrey, and Ball, 1.

Georgetown district: Spurr, Gar- rey, and Ball, 1.

Georgetown, pre-Cambrian rocks: Ball, S. H., 1.

Gilpin County: Rickard, F., 1.

gold-bearing veins in gneiss: Hol- lister, 1.

Grand River coal field: Lakes, 72.

Gunnison gold belt: Lakes, 20.

La Plata Mountains: Cross, Spen- cer, and Purington, 1; Freeman, 1; Lakes, 119.

Leadville: Emmons, 2; Van Hise,

limestones, Grayback: Patton, 8.

Monarch-Tomichi district: Craw- ford, 4.

Pikes Peak rocks: Cross, 24.

pre-Cambrian : Van Hise, 2.

quartzite, Uinta Range : White, 26.

Raton coal fields: Hills, R. C, 22.

Rico, ores, Enterprise mine: Van Hise, 6.

rock oxidation. Cripple Creek: Ar- gall, P. H., 11.

Roslta district: Wulsten, 1.

Rosita Hills, Silvercliff, rocks: Cross, 27.

sandstones, Grayback: Patton, 8.

San Juan: Comstock, 5, 7; Van Hise, 6.

Metamorphism. — Continued.

Silverton, ore deposition: Cross, Howe, and Ransome, 1.

Spanish Peaks: Hills, R. C, 25; Savage, 1.

Telluride mining district: Puring- ton, 2.

Trinidad coal fields: Stevenson, 8.

Uinta range, quartzite: White, 26.

Wyoming sandstone, Tenmlle dis- trict: Emmons, 27.

Mica, General: Bailar, 3; Sterrett, 1, 6,

Jefferson County: Ohly, 4.

production 1883-1884: Williams, A., 1—1885, 1898, 1901, 1902, 1904, 1905: Day, 1, 11, 14, 15, 17, 18— 1906: Ingalls, 5; Thom, 1—1907: Ingalls, 6; Thom, 2—1910: Ster- rett, 4.

Middle Park, General: Bechler, 1; Hay- den, 6; Henning, 1; Marvine, 1.

asphalt: Eldridge, 6.

geology of: Lakes, 125; Hayden,

gilsonite: Lakes, 211.

grahamite: Tafif, 2.

lake beds. Neocene: Dall and Har- ris, 1.

Laramie and post-Laramie beds: Cross, 18; Hills, R. C, 21.

map: Bechler, 1; Ladd, 1; Mar- vine, 1.

mining, 1867: Hollister, 1.

ore deposits: Lakes, 243.

paleontology: Clark, W. B., 1; Cockerell, 23; Lesquereux, 11.

physiography: Bechler, 1; Hen- ning, 1; Ladd, 1.

rocks, eruptive: Endlich, 7; Peale, Midland Basin: White, 4. Milk Creek: White, 4. MIMsap: Cross, 24; Gilbert, 7; Girty, 2. Mineral County. See also Creede.

geology, economic: Lee, H. A., 9.

mines: Henderson, C. W., 2, 4; Hodges, 1; Mg. Rept., 15, 18, 24.

physiography: Lee, H. A., 9.

triangulation : Gannett, S. S., 3.

Index

Mineral Creek, hydrology: Gross, Howe, and Ransome, 1. sulphur: Larsen and Hunter, 1; Phalen, 3.

Mineral paint, production, 1S89-1892, 1897: Day, 5, 6, 7, 10.

Mineralogy. Sic also list of , minerals, p. 464.

alteration of ores. Cripple Creek: Cross and Penrose, 1.

ammonium chloride, action upon certain silicates: Clark and Stei- ger, 2.

ammonium chloride, action on leu- cite and analcite: Clarke and Steiger, 1.

association of enargite, covellite and pyrite from Red Mountain: Thornton, 1.

bibliography, description of miner- als: Dana, E. S., 6, 8, 9, 10.

bibliography: Weeks, F. B., 1, 2, 4,

5, 6, 7, 8, 10, 11, 12, 13, 14. carnotite, radioactivity of: Mg.

Sci., 8. catalogue of minerals: Dana, E. S.,

8, 9, 10; Peale, 3, 5; Smith, J. A.,

catalogue of minerals of Colorado:

Cross, 5; Dana, E. S., 8, 9, 10;

Endlich, 1. catalogue of U. S. Nat. Museum

type specimens: Merrill, 7. coal, associated with silver miner- als: Koonig, 3. concretions: Hayden, 5, 19; Lakes,

39; Marvine, 1. copper: Cross and Ransome, 1;

Ransome, 3. copper ores, Cripple Creek: Cross

and Penrose, 1; Lindgren and

Ransome, 3. crystal beds of Topaz Butte : Smith,

W. B., 1. description of minerals: Dana, E.

S., 8, 9, 10; George, 5. exhibit of specimens at Pan-Ameri- can Exposition at Buffalo; Brown,

Mrs. H. C, 1.

M ineralogy. — Continued.

granite, Pikes Peak, composition of: Mathews, E. B., 1.

iron ores: Hollister, 1.

lead ores. Cripple Creek: Cross and Penrose, 1; Hollister, 1.

list of, in Colorado: Randall, J. S.,

metamorphic minerals: Crawford,

meteoric iron: A. J. S., 2; Shep- ard, C. U., 1.

meteorite, Franceville, El Paso County: Preston, H. L., 1, 2.

meteorite, Russell Gulch: Smith, .J. L., 1.

meteorites: Smith, J. L., 2.

minoralogical mistakes: van Diest,

minerals of Aspen district: Spurr,

minerals of Boulder County: Elm- mons, S. F., 7.

minerals of Clear Creek County: Emmons, 7.

minerals of Colorado Springs: Peale, 1.

minerals of Cripple Creek district: Graton, 1; Knight, F. C, 1.

minerals of El Paso County: Em- mons, 7.

minerals of Georgetown district: Spurr, Garrey, and Ball, 1.

minerals of Gilpin County: Em- mons, 7; Rickard, F., 1.

minerals of Hall Valley: Jemegan, J. Ij., z,

minerals of Hinsdale County: Em- mons, 7.

minerals of Lake County: Em- mons 7.

minerals of La Plata Mountains: Freeman, 1.

minerals of Monarch-Garfield : Crawford, 3.

minerals of Monarch-Tomichi dis- trict: Crawford, 4.

minerals of Needle Mountains: Cross, Howe, Irving, and Eta- , 1.

Index

M Ineraf ogy. — Continued.

minerals of Ouray County: Em- mons, 7.

minerals of Park County: Ray- mond, 7.

minerals of Pikes Peak: Cross, 22; Cross and Hillebrand, 1.

minerals of Red Mountain district: Schwartz, 1; Thornton, 1.

minerals of San Juan County: Comstock, T. B., 1; Emmons, 7; Irving and Bancroft, 1.

minerals of Wet Mountain Valley: Charlton, 3.

minerals, notes on. Cross, 5 ; Dana, E. S., 2, 3, 4; Day, 3; Dewey, 1; Endlich, 1, 3, 4, 5, 6; Frazier, 1; George, 5; Genth, 1, la; Hayden, 6; Hidden, 1; Hillebrand, 4; Hills, 11; Kunz, 1; Loew, 1; Peale, 7, 8; Pearce, 1, 9, 14; Pen- field, 6; Smith, W. B., 2.

nonmetallic minerals: Merrill, 6.

ore deposits of Alma district: Pat- ton, 10.

ore deposits of Cripple Creek: Lindgren and Ransome, 1.

ore deposits of Custer County: Emmons, 23.

ore deposits of . Idaho Springs : Spurr and Garrey, 2.

ore deposits of Lake City: Irving, 3; Irving and Bancroft, 1.

ore deposits of Monarch-Tomichi district: Crawford, 4.

ore deposits of Ouray district: Irv- ing, 2.

ore deposits of Rico district: Par- ish, 3.

ore deposits of Silverton: Ran- some, 3.

ore deposits of Telluride district: Cross and Purington, 1.

ore deposits of Tomichi-Monarch districts: Crawford, 4.

paramorphic origin of certain minerals: Cross, 11.

pseudomorphs after cal cite: Smith, W. B., 1.

M I nera logy. — Continued.

pseudomorphs after garnet, Salida: Penfield and Sperry, 1.

pseudomorphs after siderite:

Smith, W. B., 1. pseudomorphs after sylvanite and

krennerite. Cripple Creek: Rick-

ard, T. A., 16. rare minerals. Elk Mountains:

Emmons, Cross, and Eldridge, 1. rare minerals: Grenier. rock constituents, table of. Pikes

Peak quadrangle: Mathews, 2. silver minerals: Matteson, W. G.,

silver ores. Cripple Creek: Cross

and Penrose, 1. silver ores: Hollister, 1. spherulites containing chalcedony

and opal: Patton, 1. zinc ores. Cripple Creek: Cross . and Penrose, 1. zinc ores: Hollister, 1.

Mineral production. It was found im- possible to include statistics of mineral production. These will be found in —

1. Mineral Resources, annual volumes published by the U. S. Geol. Surv.

2. Mineral Industry, annual vol- umes since 1892. Published at present by the McGraw- Hill Book Co., New York.

3. Annual report of the Director of the Mint, published by the Director of the Mint.

4. Special numbers issued in January of each year by the various mining journals.

General: Bailar, 3; Sterrett, 1 — 1872: Mg. Rev., 1; by counties, 1874: U. S. Com. Mines, 1; 1879: Fossett, 3—1881: Burchard, H. C, 2—1898-1902: Mg. Rept., 3, 15, 18. 31—1899-1900: Lee, H. A., 3— 1901: Ores and Metals, 4—1902: State Bureau of Mines, 1 — by counties, 1903: Lakes, 143; Tonge, 11—1904: State Com. of

Index

Mineral production. — Continued.

Mines, 1; White, E. L., 1—1860- 1904, Leadvllle: Warwick, la — 1905: Day, 18—1906-1907: Thorn, 1, 2—1906: Tonga, 12; White, E. L.. 2—1907: Dalzel, 1—1909: Hall, F. H., 2—1910: Henderson, C. W., 4.

Mineral springs, General: Bailar, 3;

Crook, 1; Day, 4; Denison, 1;

Endlich, 4; Lakes, 178; Lee, H.

A., 1 ; Newberry, 3 ; Peale, 1, 2, 5,

14, 15, 16; Sanford, 1; Smith, J.

A., 1; Tonge, 11, 12, 14. analysis of waters. See list of

chemical analyses. Boulder district: Lakes, 64; Lee,

H. A., 9. calcareous: Cross and Spencer, 2. Canon City: Hayden, 6. Delta: Headden, 5, 14. deposits: Cross and Ransome, 1. Doughty springs: Headden, 5. Hot Springs- Creek : Hawn, 1. Idaho Springs: Spurr, Garrey, and

Ball, 1. iron: Cross and Spencer, 2. Manitou: Strieby, 1. Pagosa Springs: Lee, H. A., 9; Mc-

Cauley, 2; Wheeler, G. M., 6. Platte Canyon: Headden, 14. radium bearing, Delta County:

Headden, 5, 14. silicic acid in waters of: Headden,

Steamboat Springs: Lakes, 126;

Lee, H. A., 9; Lowther and

Knowles, 1. sulphur: Cross and Spencer, 2.

Mineral waters, General: Hayden, 22; Loew, 1; Peale, 15; Sanford, 1; Stevenson, 3 ; Wilson, J. S., 1.

associated with ore deposits, Sil- verton : Cross and Howe, 1 ; Ran- some, 3.

production: Day, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18; Matson, 1; Parker, E. W., 7; Thom, 1, 2; Williams, A., 1.

Minerals described. See list, page 464.

Mines and Mining, General: Am. Jour. Mg., 3; Frazer, 1; Mg. and Sci. Press, 15; Raymond, 2; Rickard, T. A., 6.

aerial tramways, San Juan Moun- tains: Seymore, 1.

bibliography of mining districts: Hill and Lindgren, 1.

deep mines: Emmons and Becker,

description of, by counties: Em- mons, 24; Foster, E. L., 1; Hodges, 1; Hutchinson, 1; Mc- Neil, 4; Munson, 2; Raymond, 1, 4, 7, 9, 10; Rickard, T. A., 24.

dividends paid by mines 1893-1898: Roth well, 1, 2, 3, 4, 5, 6, 8—1901 : Mg. Rept, 24; Struthers, 2— 1903: Newland, 1.

drilling contest: Bain, 3; E. and M. J., 13.

electrical appliances in mining: Hill, L. C, 1.

exploration by drills: Lakes, 170.

geological investigation in connec- tion with mining: Walcott, 9.

haulage, Idaho Springs: Bumes. H. B., 1.

haulage, Yak tunnel: De Wolf, 1.

history of mining: Lindgren, 5; Mg. Ind., 1; Mg. Rept, 37; Ray- mond, 1; Rickard, T. A., 6, 27; Thom, 1; Tonge, 7.

labor troubles: Mg. Mag., 1.

leasing. Cripple Creek Burgess, 1.

leasing system: Draper, 3.

methods of mining: Franklin mines: Bain, 1.

ore handling in mines: Worcester,

problems in mining: Leonard, 2.

progress in mining: Collins, G. E., 3, 5, 6; Hall, F. H., 1; Lee, H. A., 1; MacMechen, 2; Rickard, F„ 2, 3; Rickard, T. A., 5; Roth well, 5; Schwarz, 2.

pumping tests, Corliss engine: Wilkinson, 1.

quarries: Steuart, 1.

IxNDEX

Miocene. Bee also list of formations, page 479.

Stratigraphic.

OeneraJ: Cope, 18; Endlich, 5;

Hayden, 14; Peale, 5, 7. Florissant: Cockerell, 17, 33. lake basins: Marsh, 2. lake beds, Creede: Emmons and

Larsen, 1. map: Willis, 2. Tertiary: King, 1.

Paleontology. See also under forma- tion names.

General : Brues, 3; Cockerell, 2b, 2c, 10, 17, 29, 30; Cope, 15; End- lich, 5; Hayden, 19; King, 1; Kirkalday, 1; Lesquereux, 4; Lockwood, 1; Marsh, 41; Mat- thew, 3, 4; Osbom, 4; Osborn and Wortman, 3; Rohwer, 4, 5, 6; Scott, 1; Wickham, 1, 2, 3.

High Park lake beds: Cross, 24.

insects: Brues, 1, 4, 5, 6; Cokerell, 2, 4, 6, 7, 10, 11, 13, 14, 15, 16, 18, 19, 19a, 20, 20a, 20b, 20c, 21, 22, 24, 26 27, 28, 29, 30, 31, 36, 37, 38, 39, 40, 41, 42, 43, 47, 48, 49, 51, 52, 53, 55, 60; Rohwer, 1, 2, 3, 4, 5, 6, 7; Scudder: see in author list.

lake basins: Marsh, 2.

mammalia, Middle Park: Cocker- ell, 23.

mammalia: Marsh, 41; Matthew, 5; Osborn, 4; Riggs, 1.

marsupial: Scott, 1.

mollusca: Cockerell, 3, 12, 35.

White River beds: Osbom and Wortman, 2.

Mississippi drainage, map of: James,

Mitchell, coal: Emmons, Cross, and Eldridge, 2.

Moffat County, coal, analysis: Camp- bell, M. R., 5.

Mogote, Conejos River: Freeman and Bolster, 3.

Moilie Gibson mine, polybasite and tennantlte: Penfleld and Pearce,

Mollusca, General: Cockerell, 3; White, 14, 19. Cretaceous: Conrad, 2; White, 12. Denver beds: Cope, 69. Florissant: Cockerell, 3, 12, 35. Goniobasis: Conrad, 3. Green River group: White, 17. Laramie: White, 6, 17. Mesozoic: White, 2, 12. Miocene: Cockerell, 3, 12, 35. non-marine: White, 16. ostreidae: White, 18. radiolites : Cannon, 8. Unionidae: White, 2.

Molybdenum, General: Frenzel, A. B., 1; Hess, 5; Lakes, 143; Ohly, 1.

Gunnison and Teller counties: Sebben, 1.

Monarch-Tomichi district: Craw- ford, 4.

production 1893: Rothwell, 2 — 1901-1902: Day, 14, 16—1905: Ingalls, 4—1906: Thom, 1.

Monarch and Gunnison area, map:

Chapman, J. A. J. Monarch-Garfield area. See Chaffee

County. Monarch-Tomichi district. See Chaffee

County. Monazite, production 1906-1907: Thom,

Montezuma, argentite: Van Horn, 2. Montezuma County, coal, analysis: Campbell, M. R., 5. geology, economic: Lee, H. A., 9. granite: Patton, 7. lead: Ritter, 8.

lead-silver-zinc deposits: Ritter, 7. minerals: Loew, 1. minerals, California mine: Van

Horn, 2. mining: Hague, 1; Henderson, C. W., 2; Hollister, 1; Ritter, 7, 8; Widmar and Dill, 1. ore deposits: Lee, H. A., 9; Rick-

ard, T. A., 28. proustite: Van Horn, 2. physiography: Lee, H. A., 9. silver: Ritter, 8. silver-lead-zinc ores: Ritter, 7.

Index

Montezuma County. — Continued, uranium: Lee, H. A., 7. zinc: Ritter, 8. zinc-silver-lead: Ritter, 7. Montezuma district. See Summit

County. Montrose County, carnotite: Lee, H.

A., 9; Mg. World, 2. carnotite, analysis of: Clarke, F.

W., 9; Ohly, 1. Cashin mine, ore deposits: Em- mons, W. H.. 3. copper: Emmons, W. H., 3; Mg.

Rept., 40. geology, economic: Lee, H. A., 9. gypsum: Siebenthal, 1. La Sal mine, carnotite: Clarke, F.

W., 9; Hall, R. G., 1. map: Clason Map Co., 16, 25, 41. mineral production: Henderson,

C. W., 4. minerals, analysis of: Clarke, F.

W., 6; Hillebrand and Ransome,

ore deposits: Emmons, W. H., 3;

.Hillebrand and Ransome, 2. rare minerals from: Mines and

Mining, 1. Roc Creek, carnotite from, with

analysis: Clarke, F. W., 9. silver: Emmons, W. H., 3. uranium : Blanc, 1 ; Fleck, 4 ; Fleck

and Haldane, 1; Lee, H. A., 7;

Mines and Mining, 1; Ohly, 1. vanadium: Clarke, F. W., 9; Fleck.

4; Hess, 5; Mines and Mining, 1;

Mining World, 8; Ohly, 1.

Monument Creek formation or group; Cannon, 9, 10; Cope, 5; Dall and Harris, 1; Darton, 9, 12, 13; Eld- ridge, 2; Emmons, Cross, and Eldridge, 2; Haydon, 6, 14; Lee, 5; Osborn, 4; Richardson, 4; Scudder, 24; AVhite, 12.

Monument Park, erosion in: Endlich, 8; Hayden, 19.

Neocene: Dall and Harris. 1.

pickcringito: Endlich, 6. Moraines. See Glaciatlon. Morgan County, map: Clason Map Co.

Moriey-Smiths Canyon, coal mines: Hills, 25.

Morrison, General: Cross, 22. See also list of formations, page 479.

coal: Potter, W. B., 1.

copper: Mg. Rept, 40.

diabase : Cross, 1.

gypsum: Lakes, 141.

iron, analysis of: Chauvenet, 3, 5.

paleontology, fossil described: Cannon, 12; Cope, 32; Lee, W. T., 4; Lesquereux, 16; White, 6b.

Red Rock Canyon: Lee, W. T., 4.

Mosquito Gulch, ore deposits: Patton,

Mosquito Range. See also Leadville and Alma.

amphibolite: Emmons, 9.

andesite: Emmons, 9.

diorite: Emmons, 9.

geology: Cross, 23; Emmons, 2, 9, 27; Lakes, 10, 85, 143; Emmons and Irving, 1.

gneiss: Emmons, 9.

granite: Emmons, 9.

limestone, blue, analysis of: Em- mons, 9.

London fault: Lakes, 85; Patton,

ore deposits: Lakes, 10.

physiography: Emmons, 9.

porphyrite: Emmons, 9.

porphyry, gray: Emmons, 9.

porphyry, green: Emmons, 9.

porphyry, white: Emmons, 9.

porphyry, Lincoln: Emmons, 9.

porphyry. Mount Zion: Emmons, 9.

porphyry, pyritiferous: Emmons,

porphyry, Sacramento: Emmons,

porphyry. Si Iverheels: Elmmons, 9.

rhyolite, Emmons: 9.

rocks, eruptive, analysis: Em- mons, 9.

serpentine: Emmons, 9.

Mountain making. See Deformation, Faulting, Folding, Orogeny, Orography, names of ranges, etc.

Index

Mount Antero, aquamarine from:

Cross, R. T., 1. bertrandite from: Penfield, 2, 3. beryl, etched: Hills, R. C, 12. beryl, phenacite: Sterrett, 3. beryllium: Penfield, 4. cyrtolite: Genth, 1. hydrology: Schuyler, 1. minerals described: Penfield, 4. phenacite: Penfield, 1; Penfield

and Sperrey, 2; Smith, W. B., 2;

Sterrett, 3.

Mount Bross, mines: Mg. Rev., 5; Pat- ton, 10.

Mount Cameron, geology: Patton, 10.

Mount Carbon (Gunnison county), coal: Emmons, Cross, and Eld- ridge, 1; Lee, W. T., 13.

Mount Carbon (Jefferson county), coal: Emmons, Cross, and EUd- ridge, 2; Potter, W. B., 1.

Mount Carrizo quadrangle, map: U. S.

G. S. Mount Diablo, coal: Mg. and Sci. Press,

Mount Lincoln, clastic beds: Russell,

geology: Patton, 10. map: Endlich, 1. mines: Mg. Rev., 5. ore deposits: Rickard, T. A., 28. Mount Massive, ore deposits: Rickard,

T. A., 28. Mount Olympus quadrangle, map: U.

S. G. S. Mount Richard Owen, eruptives: End- lich, 7. Mount Robinson, rhyolite: Eakins and

Chatard, 1. Mount Sneffels: Rhoda, 1, 2. Mount Wilson, geology, vein system:

Nason, F. L., 1; Rickard, T. A.,

Mount ZIrkel, gneiss: Zirkel, 1. Nathrop, General: Cross, 22.

topaz: Eakle, 1; Penfield and

Minor, 1. topaz and garnet in rhyolite:

Cross, 8. rocks, analysis of: Clarke, F. W., 5.

Needle Mountains, General: Comstock,

7. See also Quartzite Mountains, aplite: Cross, Howe, Irving, and

Emmons, 1. biotite schist: Cross, Howe, Irving,

and Emmons, 1. garnet schist: Cross, Howe, Irv- ing, and Emmons, 1. geology, ore deposits: Cross,

Howe, Irving, and Emmons, 1;

Lakes, 48. gneiss: Cross, Howe, Irving, and

ETmmons, 1. gold: Cross, Howe, Irving, and

Emmons, 1 ; Lakes, 48. granite: Cross, 39; Cross, Howe,

Irving, and Emmons, 1. granodiorite: Cross, Howe, Irving,

and Emmons, 1. hornblende schist: Cross, Howe,

Irving, and Emmons, 1. lamprophyre dikes: Cross, Howe,

Irving, and Emmons, 1. map: Cross, Howe, Irving, and

Emm,on8, 1; U. S. G. S. ore deposils: Cross, Howe, Irving,

and Emmons, 1; Spurr, Garrey,

and Ball, 1; Rickard, T. A., 28. paleontology: Eastman, 1; Hay,

O. P., 2; Kindle, 1. physiography: Cross, Howe, Irving,

and Emmons, 1. quartzite: Cross, Howe, Irving,

and Emmons, 1.

Neeleton, ore deposits: Rickard, T. A.,

Nederland. See Boulder County. Neglected mine, description: Emmons,

W. H., 1. Neocene, correlation papers: Dall and

Harris, 1. Nepesta quadrangle, barite: Fisher, 1.

cement: Fisher, 1.

fire clay: Fisher, 1.

gas, oil: Fisher, 1.

p:eology, dynamic: Fisher, 1.

gravel, Fisher, 1.

hydrology: Fisher, 1.

iron ores: Fisher, 1.

limestone: Fisher, 1.

Index

Nepetta quadrangle. — Continued, map: Fisher, 1; U. S. G. S. physiography: Fisher, 1. sandstone: Fisher, 1. soils: Fisher, 1.

Nevadaville, ore deposits: Rickard, T. A.. 28.

Newcastle, cement: Bailar, 3.

coal: Emmons, 20; Glenn, 1;

Lakes, 6.. coal, analysis of: Hosea, 2; Lakes,

gold ore near: Rickard, F., 4.

Newhouse tunnel: Bain, 6; DeWolf, 2; Lakes, 28, 80, 202; Warwick, 1.

New! ins Gulch, gold placers: Butler, G. M., 3.

Newmire, carnotite deposits: Fleck and Haldane, 2. vanadium: Brady, 1; Hess, 2, 3; Lindgren, 9; Mg. World, 8.

Nickel, Fremont County, Gem mine:

Charlton, 2. Leadville: Argall, P., 3. production 1892: Rothwell, 1—

1904: Judd, 1.

Nitrates in soils: Headden, 15.

Niwot quadrangle, map: U. S. G. S.

Non-metallic minerals: Bailar, 3.

North Boulder, ore deposits: Rickard, T. A., 28.

north central Colorado, map: Hender- son, J., 10.

northeastern Colorado, map: Clason

Map Co.; Martin, 1; Williamson-

Haffner Co., 2. paleontology: Henderson, J., 8. northern Colorado, artesian water:

Henderson, J., 10; Lakes, 112. coal: Day, 4; Henderson, J., 10;

Lakes, 112. geology, dynamic: Henderson, J.,

iron: Chauvenet, 3. limestone: Henderson, J., 10. map: Clason Map Co.; Ladd, 2. paleontology: Cope, 1. petroleum: Henderson, J., 10.

North Park, General: Broadhead, 1; Hague and Emmons 1; King, 1; Thomas, C, 2.

coal field: Grout, Worcester, and Henderson, 1; Hills, R. C, 22; Lakes, 163; Shubart, B., 2; Storrs, 1.

geology, dynamic: Hague and Em- mons, 1.

igneous rocks: Hague and Em- mons, 1.

lake beds: Dall and Harris, 1.

Mesozoic formations: Hague and Emmons, 1.

paleontology: White, 6b.

Paleozoic formations: Hague and Emmons, 1.

physical features: Hague and Em- mons, 1.

Tertiary beds: Hague and Em- mons, 1.

volcanic rocks: Hague and Em- mons, 1.

North Platte River: Thomas, C, 2.

Northwestern Colorado, coal, analysis:

Gale, 3, 7; Lord, 2. coal : Gale, 7 ; Fenneman and Gale,

2; Hewett, 1; Hills, 22; Lakes,

8; White, 4. geology, dynamic: Gale, 3, 7;

Fenneman and Gale, 2; Hewett,

1 ; White, 4, 26. hydrology: Hewett, 1; Newell, 16;

White, 4. map: Hayden, 31; Marvine, Peale,

Endlich, and White, 1; White, 4.

paleontology: Henderson, 14. physiography: Hewett, 1; Newell, 1 ; White, 4, 26.

Oak Creek, coal: Fenneman and Gale, 2; Gale, 7; White and Perry, 1,

Ocher, production 1889-1891 : Day, 5. 6.

Oh be Joyful Creek, coal: Peale, 7.

Ohio Creek, coal, analysis: Eakins, 6.

Ohio City, mines, production 1880: Burchard, H. C, 1.

Oil. See petroleum.

Indbx

Oil Creek, oil: Endlich, 1; Hayden, 6. stream measurements: Freeman and Mathers, 1.

Oligocene.

Stratigraphic,

Brule formation: Darton, 9; Os- bom, 4.

Castle conglomerate: Lee, 5; (Richardson, 4).

Castle Rock conglomerate: (Lee, 5); Richardson, 4.

Cedar Creek beds: Osborn, 4.

Chadron formation: Darton, 9; Osborn, 4.

Horsetail Creek beds: Osborn, 4.

Martin Canyon beds: Osborn, 4.

Monument Creek group: Cannon, 9, 10; Cope, 5; Darton, 9, 12, 13; Eldridge, 2 ; Ermmons, Cross, and Eldridge, 2; Hayden, 6, 14; Lee, 5; Richardson, 4; Scudder, 24.

White River group: Darton, 9; Os- born, 4. Paleontology,

General: Darton, 12; Osborn, 4; Scudder, 24.

Onyx, General: Bailar, 3; Lakes, 51; Rothwell, 3, 8.

Monarch-Tomichi district: Craw- ford, 4.

Routt County: Parsons and Lid- dell. 1.

Steamboat Springs: Lee, H. A., 9.

Opal, production, 1907: Thom, 2. Opalized wood, production, 1906: Thom,

Ophir, ore deposits: Rickard, T. A., 28.

silver deposits: Sweetser, 3. Ordovician. Stratigraphic, See also list of forma- tions, page 479. General: Girty, 2; Hayden, 14. Alma district: Patton, 10. Canon City: Am. Geol.,1; Walcott,

3,5. Castle Rock: Lee, W. T., 5. Manitou formation: Finlay, G. I.,

Monarch-Tomichi district: Craw- ford, 4.

Ordovician. — Continued. Stratigraphic, — Continued. Parting Quartzite: Cross, 41; Cross,

Howe, and Irving, 1; Cross,

Howe, Irving, and Emmons, 1;

Emmons, 2, 9, 27; Emmons and

Irving, 1; Spurr, 1. Tomichi formation : Crawford, 4. Trout Creek: Peale, 5. White Limestone: Emmons, 2.

Paleontology. General: Cross, 24; Darton, 13;

Meek, 1. Alma district: Patton, 10. Bcachiopoda: Schuchert, 1. Calciferous: Endlich, 5. Castle Rock: Lee, W. T., 5. Chazy, Bryozoa in: Nickles and

Bassler, 1. Cincinnati, Bryozoa in: Nickles

and Bassler, 1., Fremont limestone: Cross, 24;

Walcott, 3. Harding sandstone. Canon City:

Walcott, 3. Manitou limestone, goat-antelope

fauna: Cragin, 5. Manitou: Darton, 14; Cross, 24. Monarch-Tomichi district: Craw- ford, 4. Perry Park: Darton, 14. Quebec: Peale, 5. Trenton, Canon City: Walcott, 3. Trenton, fossil fish: Am. Geol., 1;

Orton, 1. Trenton: Nickles and Bassler, 1;

White, 22. Yule limestone: .Emmons, Cross,

and Eldridge, 1.

Ore deposits. General: Am. Jour. Mg., 1; Blow, 1; Clark, R. N., 2; End- lich, 1, 2, 3, 5; Parish, 2; Hay- den, 21; Jernegan, 1; Koenig, 3; Lakes, 193; Mg. Rept, 17; Mg. Rev., 4, 7; Newberry, 7; Pearce, 8; Rickard, F., 1; Rickard, T. A., 13, 20; Ritter, 8; Schwarz, 1; Stone, 7.

Alma: Patton, 10.

alteration of: Penrose, 3.

Indbx

Ore deposits. — Continued.

Aspen district: Henrich, 2; Spurr,

Aspen, dolomization of rocks: Spurr, 1.

Aspen, ferration of ores: Spurr, 1.

Aspen, MoUie Gibson and Smug- gler-Union: Emmons, 29; Jenney,

Aspen, source of metals: Spurr, 1.

Aspen, silicification of ores: Spurr,

Aspen: Newberry, 16; Van Rise, 4.

basaltic zones as guides to ore: Stevens, E. A., 2.

bismuth, associated with ore de- posits: Pearce, 15.

blankets, origin of, formation: Ransome, 2.

Boulder County, genesis of ore de- posits: Bagg, 1.

Boulder County, John Jay mine, origin of veins and ore: van Diest. 12.

Boulder County, mineral belt, to Leadville: Spurr, Garrey, and Ball, 1.

Boulder County, vein phenomena: Farish, 1.

Boulder County: E. and M. J., 39; Farish, 1.

Beckenridge, origin of placers: Lakes, 195.

Rio Blanco, origin of carnotite: Gale, 2; Ilillebrand and Ran- some, 1.

Cashin mine, origin of ore: Em- mons, W. H., 3.

cave deposits: Lakes, 60, 87, 91.

cement of rocks, in: Lakes, 139.

character of ore deposits: Cross and Ransome, 1; Hill and Lind- .gren, 1; Lakes, 21; Ransome, 2.

chimney deposits: Lakes, 60.

copper. Red Beds: Lindgren, 8.

Cripple Creek, basaltic zones as guides to ore: Stevens, E. A., 2.

Cripple Creek, genesis of ores: Lindgren and Ransome, 3.

Ore deposits. — Continued.

Cripple Creek, origin of ores: Spurr, Garrey and Ball, 1.

Cripple Creek, secondary enrich- ment: Bancroft, G. J., 1.

Cripple Creek, source and mode of deposition : Cross and Penrose, 1.

Cripple Creek: Bancroft, Q. J., 4; Lakes, 18; Pearce, 9; Stevens, E. A., 2; Van Hise, 4.

Custer County, genesis of ores: Emmons, 23.

Custer County, Geyser mine: Van Hise, 4.

deformation and ore deposition: Lakes, 5, 21, 143.

deposition: Finch, 4.

described by counties: Lakes, 21, 143,200; Smith, T. A., 1.

Disappointment ores, .origin of: Hillebrand and Ransome, 1.

down hill pressure and outcrops: Lakes, 133.

Empire mining district, vein for- mation: Spurr, Garrey, and Ball,

enarglte, formation of: Plrsson, 1.

eruptive lodes: Lakes, 5.

eruptive porphyry: Pearce, 15.

Evergreen copper deposit: Ritter,

faults and secondary alteration: Emmons, 10.

fissure system related to ore for- mation: Van Hise, 4.

fissure veins, origin of: Emmons,

fissuring and veins: Purington, 3.

Four Mile placers, origin of: Hoover, 3.

genesis of ore deposits: Bancroft, G. J., 6, 7, 8; Collins, O. J., 11; Emmons, 11 ; Pearce, 3.

geological formations, distribution of ore deposits in: Rickard, T. A., 28.

Georgetown ore deposits: Spurr, Garrey, and Ball, 1.

Georgetown, ores, chemical altera- tion of: Spurr and Garrey, 1.

Index

Ore deposits. — Continued.

Georgetown, vein materials : Spurr, Garrey, and Ball, 1.

Glacial lakes, and: Lakes, 227.

gold-bearing ores, paragenesis of: Pearce, 14.

gold, free, in other than oxidized zones: Lakes, 134, 145.

gold in drains of divide, origin of: Welles, A. M., 1.

gold in granite: Hastings, 1.

Gunnison gold belt, ore formation: Lakes, 20.

Hahns Peak, placer deposits: Gale, 1.

Hahns Peak: George and Craw- ford, 1.

Humboldt-Pocahontas vein: Clark, R. N., 2.

igneous rocks, and: Lakes, 215.

iron oxides: Devereux, W. B., 1.

La Plata Mountains, contact de- posits: Lakes, 84.

La Plata Mountains, origin of ore: Cross and Spencer, 1.

La Plata Mountains: Lakes, 119.

lateral secretion: Argall, P., 2.

Leadville, genesis of ore : Emmons, 9; Ameling, 1; Warwick, la.

Leadville, leaching and redeposi- tion of silver ore: Meunsch, 4.

Leadville: Emmons, W. H., 1; Em- mons, 2; Lakes, 5, 21; Posepny, 1; Rolker, 2.

limestone ore deposits: Mg. Ind.,

mineral belt: Lakes, 216.

mineralizing epoch : Spurr, Garrey, and Ball, 1.

mine water, sources of solid con- stituents: Emmons, 24.

Montrose County, uranium and vanadium : Fleck and Haldane, 1.

Monarch-Tomichi, genesis of ores : Crawford, 4.

Mosquito Range: Emmons, 9.

Needle Mountains, origin of veins : Cross, Howe, Irving, and Em- mons, 1.

nuggets, . formation of: Lakes, 14.

Ore deposits. — Continued.

Ouray, American Nettie Mine: Downer, 1.

Ouray, Camp Bird Mine: Puring- ton, 3; Titcomb, 1.

Ouray, gold deposits: Endlich, 9.

Ouray, mines: Downer and DeCou,

Ouray, Red Mountain, chimneys

and caves: Lakes, 60.

Ouray, Red Mountain, Yankee Girl: Emmons, 29.

Ouray, Red Mountain: Posepny, 1; Schwarz, 1.

Placerville: Hillebrand and Ran- some, 2.

Plomo, gold deposits: Gunther, 1.

Replacement deposits : Cross, Howe, and Ransome, 1; Cross, Howe, and Irving, 1 ; Emmons, 6.

Rico, Enterprise mine, veins struc- ture: Rickard, T. A., 12; Jenney,

Rico, genesis of ore deposits: Cross and Ransome, 1 ; Ransome, 2; Rickard. 7.

Rico, lode fissures, origin of: Ran- some, 2.

Rico, Newman Hill: Weed, 2.

Rico, pay shoots: Ransome, 2.

Rico: Cross and Spencer, 2; Rick- ard, T. A., 7.

Rosita and Silver Cliff: Emmons, 24; Spurr, Garrey, and Ball, 1.

Sangre de Cristo Range, copper: Bagg, 2.

San Juan County: Comstock, 1; Emmons, 29; Emmons, W. H., 4; Spurr, Garrey, and Ball, 1.

San Miguel County, uranium and vanadium: Fleck and Haldane,

San Miguel County: Lee, H. A., 9.

Salida, schist: Cross, 20.

secondary alteration : Emmons, 10.

schist veins in igneous rocks: Lakes, 177.

Silver Cliff, Bassick mine, charcoal in: Jenney, 1.

(14)

Indbx

Ore deposits. — Continued.

Silver Cliff, Bassick mine: Grabill,

Silver Cliff, Bassick mine, origin of ore: Mg. and Sci. Press, 12.

Silver Cliff, secondary enrichment : Emmons, 29.

Silver Plume, Seven thirty mine: Prosepny, 1.

Silver Plume: Van Hise, 4.

Silverton, stock and lode ores, origin of: Cross and Howe, 1.

Silverton: Cross, Howe, and Ran-

some, 1; Ransome, 3. southwestern Colorado: Comstock,

structural relations of ore deposits :

Emmons, 12. Summit County: Hills, R. C, 3. Telluride, origin of ore: Cross and

Purington, 1; Purington, 2. uranium and vanadium deposits,

Montrose and San Miguel: Fleck

and Haldane, 1. vulcanism and ore formation:

Lakes, 21, 140, 143. zeolitic minerals. Table Mountain,

Golden: Emmons, Cross, and

Eldridge, 2. zones of deposition, Georgetown:

Spurr, Garrey, and Ball, 1; Fos- ter, E. L., 1.

Oro City, General : Peale, 6.

geology, economic: Endlich, 1. gold : Loew, 1 ; Stevenson, 3. mines: Mg. and Sci. Press, 10.

Orogeny.

General: Suess, 1.

displacement, mountain building: Gilbert, 2.

mountain making, close of Carbon- iferous age: Dana, J. D., 3.

mountain making: Blake, W. P., 1.

mountain-upthrusts : White, 24.

orographic and structural features of Rocky Mountain geology: Hills, R. C, 17.

orographic structure, types of: Powell, 4.

Orography, Fortieth Parallel area, Colorado. Archean : King, 1. Colorado Range: King, 1. Medicine Bow Range: King, 1. Park Range: King, 1. Post-Carboniferous: King, 1. Post-Cretaceous: King, 1. Post-Laurentian : King, 1. Rocky Mountains: King, 1. Tertiary: King, 1. Uinta Range: King, 1.

Otero County, map: Clason Map Co. paleontology: Stanton, 3.

Ouray County, alunite: Hulbert, 1.

American Nettie mine, gold : Lakes,

American Nettie, ore deposits: Downer, 1; Lakes, 214.

andesite: Cross, Howe, and Irving,

Camp Bird mine, gold: Purington, 3. 4 ; Titcomb, 1.

Camp Bird mine, map: Purington,

Camp Bird mine, mill, description : Mg. and Sci. Press, 13.

Camp Bird mine, mining, milling: Purington, 3; Richards, 9; Tit- comb, 1; Worcester, 1.

Camp Bird ore deposits: Puring- ton, 3; Titcomb, 1.

Camp Bird ores, treatment: Head- den, 10.

Camp Bird, silver: Purington, 3, 4.

Camp Bird: E. and M. J., 42; Frecheville, 1; Purington, 3; Rickard, T. A., 29; Woods and Doveton, 1.

coal, lustrous, 'with native silver: Koenig, 3.

coal: Campbell, M. R., 5; Cross, Howe, and Irving, 1.

copper: Kedzie, 1; Ransome, 4.

diabase: Cross, Howe, and Irving,

geology, dynamic: Cross and Howe, 1; Cross, Howe, and Irving, 1; Downer and DeCou, 1 ; Emmons, 29; ETndlich, 9; Irving, 2; Lakes,

Indkx

Ouray County. — Continued.

6, 60, 181; Newsora, 1; Posepny, 1; Purington, 3; Ransome, 4; Schwarz, 1; Titcomb, 1.

geology, economic: Emmons, 7; Lee, H. A., 9.

glaciation: Cross, Howe, and Irv- ing, 1.

gold, origin of deposits : Endlich, 9.

gold: Cross, Howe, and Irving, 1; Endlich, 9; Irving, 2; Kedzie, 1; Lakes, 181; Sharwood, W. J.,

hydrology: Comstock, 9; Cross, Howe, and Irving, 1.

iron: Kedzie, 1.

latite: Cross, Howe, and Irving, 1.

lead: Kedzie, 1.

manganese: Kedzie, 1.

map: Clason Map Co.; Cross and Howe, 1; Cross, Howe, and Irv- ing, 1 ; Irving, 2 ; U. S. G. S.

milling: McLaughlin, 1.

minerals, analysis of: Clarke, F. W., 6; Emmons, 7.

mines, aerial wire rope tramways: Tucker, 1.

mining, cost of: Ingalls, 3.

mining and mineral production: Ameling, 3; Burchard, H. C, 2, 3, 4; Collins, G. E., 3; Cross, Howe, and Irving, 1; Downer and DeCou, 1; Endlich, 9; Hen- derson, C. W., 2, 4; Hodges, 1; Kedzie, 1; Lee, H, A., 9; Mg. Rept, 24; Rickard, T. A., 4.

ore deposits, bedded. Red Moun- tain: Kedzie, 1; Schwarz, 5.

ore deposits: Bancroft, G. J., 6, 7; Cross, Howe, and Irving, 1; Downer and DeCou, 1; Ihlseng, 1; Irving, 2, 4; Kedzie, 1; Pearce,

paleontology: Kindle, 1; Spencer,

A. V/.,

physiography: Kedzie, 1; Koenig, 3; Purington, 3; Titcomb, 1.

polybasite: Penfield, 8.

Potosi volcanic series: Cross, Howe, and Irving, 1.

Ouray County. — Continued.

pyroxene andesite: Cross, Howe, and Irving, 1.

quartz-blotlte latite: Clarke, F. W., 8; Cross, Howe, and Irving, 1.

quartz monzonlte: Clarke, F. W., 8; Cross, Howe, and Irving, 1.

quartz monzohite porphyry: Clarke, F. W., 8; Cross, Howe, and Irving, 1.

quartz-pyroxene latite: Clarke, F. W., 8; Cross, Howe, and Irving,

Red Mountain, alunite: Hurlburt,

Red Mountain, andesite: Kedzie,

Red Mountain, copper: Kedzie, 1;

Lakes, 60; Snedaker, 3.

Red Mountain creek : Cross, Howe, and Ransome, 1.

Red Mountain, enargite: Pirsson,

Red Mountain, gold: Kedzie, 1. Red Mountain, kaolinite: Hills, R.

C, 5. Red Mountain, lead: Schwarz, 1. Red Mountain, limestone: Kedzie,

Red Mountain, map: Fischer, 1. Red Mountain, minerals, analysis

of: Clarke, F. W., 6; Schwarz, 1. Red Mountain, ore deposits: Com- stock, 9; Emmons, 12; Kedzie,

1; Lakes, 21, 143, 217; Posepny,

1; Rickard, T. A., 28; Schwarz,

1, 5; Western, 3. Red Mountain, quartzite: Kedzie,

Red Mountain, silver: Kedzie, 1;

Lakes, 60, 91; Schwarz, 1;

Weston, 3. Red Mountain, Treasury Tunnel:

Russel, H. Y., 1. Red Mountain, tungsten: Ohly, 8. Red Mountain, zinckenite: Hille-

brand, 2. Red Mountain, zunyite: Penfleld,

Index

Ouray County. — Continued.

Red Mountain: Comstock, 7; Ked- zie, 1; Lakes, 10, 60; Ransome, 3.

rocks, analysis: Clarke, F. W., 8.

rhyollte: Cross, Howe, and Irving,

silica: Kedzie, 1.

silver, associated with clastic dike: Ransome, 4.

silver, with lustrous coal: Koenig,

silver: Cross, Howe, and Irving, 1;

Endlich, 9; Irving, 2; Pearce.

15; Purington, 3, 4. triangulation in: Gannett, S. S., 2.

tuff, Burns: Cross-, Howe, and Irv- ing, 1.

tungsten, hiibnerite: Hillebrand, 1; Ohly, 8.

uranium in: Lee, H. A., 7.

water analysis: Cross, Howe, and Irving, 1.

zinc: Kedzie, 1.

Pagosa Springs, General : Endlich, 4; Lowe, 1; McCauley, 2; New- berry, 3; Peale, 14; Stevenson, 3; Wheeler, G. M., 6.

coal deposits: Gardner, J. H., 1.

geology, dynamic: Lakes, 96, 223.

mineral waters: Lee, H. A., 9; Mc- Cauley, 2; Newberry, 3; Peale, 14; Wheeler, G. M., 6.

oil: Lakes, 181, 195a.

water analysis: Endlich, 4; Lee, H. A., 9; Peale, 14.

Paleobotany.

Cretaceous: Cockerell, 9, 45, 57 Cope, 69; Dana, 4; Knowlton, 2 Lesquereux, 1, 3, 7, 10, 11, 14, 16 Ward, L. F., 2, 5.

Fort Union: .Knowlton, 1.

fossil grass: Brues, C. T. and B. B.,

fossil flora: Cockerell, 33; Lesque- reux, 8, 12, 18; Ward, L. F., 19; White, 21.

fossil trees: Lakes, 75.

fossil woods: Platen, P., 1.

Paleobotany. — Continued.

Jurassic: Ward, L. F., 6.

Laramie: Hollick, 1, 2; Lesque- reux, 16, 17; Ward, L. P., 1.

Lignitic formation: Lesquereux, 2, 4, 9, 11 ; Newberry, 1, 2.

Mesozoic : Knowlton, 3.

Permian: Lesquereux, 16.

Platte valley : Cannon, 10a.

Tertiary: Cockerell, 17, 25. 32, 43, 61, 62; Cope, 34; Elmore, 1; Knowlton, 2, 3; Lesquereux, 1, la, 11, 12, 14, 16; Ward. L. F., 1,2.

Triassic: Ward, L. F., 4.

See also under age names, forma- tion names, locality names, etc.

Paleontology, Oeneral: Am. Nat. 1; Dawson, 1; Emmons, 7, 20; Hay- den, 4, 6, 12, 16, 26; Hills, 11, 17; Lakes, 5, 10; Lesley, 1; Lesque- reux, 2, 11; Lucas, 1; Meek, 1, 5; Newberry, 5; Osborn, H. F., 6; Parker, 1; Schiel, 1; Scudder, 9, 10; Stanton, 1, 3; Walcott, 8; White, 17. bibliography: 1886: Marcou, J. B., 1, 2—1888-1892: Keyes, 2—1892- 1905: Weeks, F. B., 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14—1908- 1912: Nickles, 1, 2, 3, 4, 5.

bibliography, fossil index: Grabau and Shimer, 1.

bibliography, geological formation names: Weeks, F. B., 9.

catalogue. United States National Museum specimens: Merrill, 7.

See also under: Paleozoic, Meso- zoic, Cenozoic, Cambrian, Ordi- vician, Silurian, Devonian, Car- boniferous. Permian, Triassic, Jurassic, Comanchean, Creta- ceous, Tertiary, Shoshone, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, formation names, Invertebrata, Vertebrata, Insecta, Paleobotany, locality names, etc.

Index

Paleozoic. Stratigraphic. General: Holmes, 6; Hunt, 5; King,

1; Peale, 8; Stevenson, 3; Wal-

cott, 4. Colorado Range: Hague and ETm-

mons, 1. Cordilleran sea, sediments: Wal-

cott, 4. Elk Range: Holmes, 1. interior strata: Peale, 10.

Leadville: Emmons, 2.

map: King, 1; Willis, 2.

Monarch-Gar field area: Crawford,

Monarch-Tomichi district: Craw- ford, 4.

North Park: Hague and Emmons,

northwestern Colorado: White, 24,

Palmer Lake: Cannon, 9.

Perry Park: Cannon, 7.

section: Hill, J. M. Paleontology,

General: Darton, 9, 13; Girty, 2; Scudder, 33; White, 15.

bibliography: Scudder, 31.

Brachipoda: Clark, J. M., 2.

Bryozoa, bibliography and cata- logue of genera and species: Nickles and Bassler, 1.

Canyon City: Am. Geol., 1; Wal- cott, 3, 3a, 5.

Crustacea: Vogdes, 1.

fish: Vaillant, 1.

Palmer Lake: Cannon, 9.

Perry Park: Cannon, 7.

Primordial period: Endlich, 5; White, 22. Paleozoic, Fortieth Parallel area, Colo- rado.

Box Elder Creek: Hague and Em- mons, 1; King, 1.

Browns Park: Hague and Emmons, 1; King, 1.

Cambrian : Hague and Emmons. 1 ; King, 1.

Colorado Range: Hague and Em- mons, 1; King, 1.

Paieozoic. — Continued.

Little Snake River: Hague and Emmons, 1; King, 1.

Lodore Canyon: Hague and Em- mons, 1; King, 1.

Medicine Bow Range: Hague and Emmons, 1; King, 1.

North Park: Hague and Emmons, 1; King, 1.

Ogden Quartzite: Hague and Em- mons, 1; King, 1.

Owi-yu-kuts: Hague and Emmons, 1; King, 1.

paleontology : Hague and Emmons, 1; King, 1.

Rocky Mountain province: Hague and Emmons, 1; King, 1.

Silurian: Hague and Emmons, 1; King. 1.

Uinta Range : Hague and Emmons, 1 ; King, 1.

Upper Coal- Measures: Hague and Emmons, 1; King, 1.

Weber Quartzite: Hague and Em- mons, 1; King, 1.

Palisades, coal field: Lee, W. T., 10.

Palmer Lake district, physiography: Cannon, 9.

Paradox Valley, General: Peale, 12. camotite: Curran, 1; Salt Lake

Mg. Rev., 2. copper, gold, silver: Lakes, 67. vanadium: Hess, 2, 3, 5; Lindgren,

Park County, Antelope springs, lacus- trine sands containing gold: Hastings, 1.

coal: McNeil, 1.

enargite: Spencer, L. J., 1.

geology, dynamic: Lee, H. A., 9; Sadtler, 1.

geology, economic: Emmons, 7; Fossett, 1.

geology: Lee, H. A., 9.

gold, Antelope springs: Hastings,

gold: Rickard, T. A., 9; Sadtler, 1.

Halls Valley ores: Jernegan, 2. fiee also Halls Valley.

Index

Park County. — Continued.

iron deposits, analysis : Chauvenet,

3, 8. mineral from: Hillebrand, 1. minerals, analysis of: Clarke, F.

W., 6. mines and mineral production:

Anderson, 1; Burchard, H. C; 1,

2, 3, 4; Henderson, C. W., 2, 4;

HolMster, 1; Lakes, 5, 143; Mg.

Rept., 18; Mg. Rev., 1; Raymond,

1, 4, 5, 7, 8, 10. ore deposits: Lakes, 143; Lee, H.

A.,

ore treatment: Sadtler, 1.

placer deposits : Emmons, 7 ; Hart- ley, 1; Lakes, 5; Lee, H. A., 9.

physiography: Sadtler, 1.

rocks, carbonate, analysis of: Clarke and Hillebrand, 1.

Tarryall placers: "Hartley, 1.

vanadium from: Fleck, 3.

water analysis: Lee, H. A., 9.

Whale lode: Jernegan, 1.

Park Province: Powell, 3.

Park Range, OeneraJ: Bechler, 1; Hague and Emmons, 1 ; King, 1 ; Peale, 5; Powell, 3. geology: Hayden, 14. gneisses: Zirkel, 1. pre-Cambrian : Van Hise, 1. silver: King, 1. Parks of Colorado, ore deposits: Lakes,

Parnassus springs: Lee, H. A., 9;

Loew, 1. Pawnee Suites, geology, dynamic:

Henderson, J., 7; Lakes, 112. Pearl, copper: Mg. Rept., 40; Read, 1, 2; Spencer, 5. mines: Mg. Rept., 30. Peat, bibliography: Lee and Nickles, 1. Pennsylvania. Paleontology.

General: Cross, 41; Girty, 2. Permian. StratigrapMc. General: Dutton, 1; Endlich, 5; Hollister, 1; Knight, W. C, 2; Marvine, 1 ; Peale, 7, 8.

Permian. — Continued. Stratigraphic. — Continued, eastern foothills, Permo-Carbonif-

erous, of: Butters, 2. Nebraska: Knight, W. C, 2. ore deposits in: Rickard, T. A., 28. Paleontology. General: Endlich, 5; Girty, 2, 5; Lesquereux, 11; Marvine, 1; Peale, 5, 7. Brachiopoda: Schuchert, 1. Front Range: Butters, 2. Lykins: Butters, 2; Girty, 5. Plants: Lesquereux, 15.

Permo-Carbonlf erous. 8 trat (graphic. General: Crawford, 4; King, 1;

Peale, 7, 8. eastern foothills: Butters, 2. San Juan: Read, 4. Paleontology. Front Range: Butters, 2; Girty, 5.

Permo-Pennsyivania (?), Monarch-To-

michi district: Crawford, 4. Perry Park, geology: Cannon, 7; Lee, W. T., 5.

gypsum beds: Lakes, 141.

paleontology: Lee, W. T., 5.

silver: Cannon, 7. Peru, mining in 1867: Hollister, 1. Petroleum, General: Burroughs, 1; George, 5 ; Henahen, 1 ; Johnson, 4; Lakes, 51, 93, 100, 165, 189, 205, 207, 239, 251, 252; Lee, H. A., 1; Mg. and Eng. World, 10; Nat Conservation Com., 1 ; New- berry, 11; Ores and Metals, 5; Smith, J. A., 1; Stevenson, 3; Van Wagener, T., 3; Weeks, 2; Youmans, 1.

Aguilar field: Laljes, 117.

Archuleta County: Caldron 1; Lakes, 96, 99; Lee, H. A., 9; Ores and Metals, 5.

Book Cliffs: Lakes, 146, 182.

Boulder County: Day, 22; Fenne- man, 2, 3, 5; Kirkbride, 1; Lakes, 124, 137, 173, 240; Lang- ridge, 1; Lee, H. A., 9; Mg. In- vestor, 1; Washburne, 1.

Index

Petroleum. — Continued.

Boulder and Florence fields: Day,

Canon City: Hayden, 12; Wil- liams, S. G., 1.

Denver Basin: Lakes, 100; More, 1; Ohly, 6.

eastern Colorado: Lakes, 195a.

Elmoro quadrangle: Hills, R. C,

Florence: Day, 22; Elridge, 4; Fenneman, 4; Hall, C. L., 1; Lakes, 6, 8, 86, 124, 241; Mg. In- vestor, 3; Newberry, 11, 15; Ohly, 9; Washbume, 2.

Fremont County: Ihlseng, 2; Lee,

H. A., 9. Front Range: Ikes, 185.

Glenwood Springs: Newberry, 15.

Hayden: Fenneman and Gale, 2.

Lay: Fenneman and Gale, 2.

Nepesta quadrangle: Fisher, 1.

northeastern Colorado: Lakes, 112.

northern Colorado: Henderson, J.,

origin of oil: Adams, G. 1., 2; E. and M. J., 35; Lakes, 65, 86; Newberry, 15.

Oil Creek Valley: Ehidlich, 1; Hay- den, 6.

Pagosa Springs: Lakes, 181.

production 18831884: Williams, A., 1—1887-1905: Day, 3. 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 —1892-1905, 1909, 1910: Roth- well, 1, 2, 3, 4, 5, 6, 7, 8. 9, 10. 11, 12, 13, 14, 15, 16, 17, 18, 20, 21— 1894: Weeks, 4—1901-1902: Struthers, 2, 3—1903: Newland, 1—1904: Judd, 1—1905: Ores and Metals, 9—1906: Ingalls, 5 Thom, 1—1907: Ingalls, 6 Thorn, 2; Thomas, K., 1—1908 Ingalls, 7—1910: Dalzell, 3 Fay, 1; Warwick, 4—1911 Parker, E. W., 7.

prospecting for: Lakes, 68, 93.

Pueblo quadrangle: Gilbert, 7.

Rangely: Gale, 5; Mg. World, 4.

Petroleum. — Continued.

Rio Blanco and Routt counties: Lakes, 86, 97.

Routt County: Lakes, 86; Parsons

and Liddell, 1. South Park: Lakes, 115. southeastern Colorado: Lakes, 107. St. Vrain: Lakes, 68. Spanish Peaks: Hills, R. C, 9. Walsenburg: Hills, R. C, 15. White River: Hollister, 1.

Petrology, General: Endlich, 1, 2, 3, 4, 5, 7; Hague and Emmons, 1 . Hayden, 14; Hills, R. C, 11. 14 Hunt, 2; King, 1; Lakes, 7, 10 Marvine, 1, 2; Peale, 5, 7, 8 Schiel, 1; Scudder, 15, 18, 27 Stevens, E. A., 2; Stevenson, 3.

allanite an accessory constituent of many rocks: Iddings and Cross, 1.

Archeau rocks: Emmons, 2.

areal geology of Lower Clear Creek: Underbill, 4.

bibliography, 1887-1888: Merrill, 1 —1892-1905: Weeks, F. B., 1, 2. 3, 4, 5, 6, 7, 10, 11, 12, 13, 14— 1906-1907: Weeks and Nickles, 1 —1908, 1909, 1910, 1911, 1912: Nickles, 1, 2, 3, 4, 5.

catalogue of U. S. National Mu- seum type specimens: Merrill, 7.

catalogue of rocks: Peale, 4, 5.

conglomerates of Georgetown : Spurr and Garrey, 1.

Cripple Creek gold mining district, geology of: Cross, 29.

dike of Columbia vein in Ward dis- trict, BOulder County: Palmer and Stoddard, 1.

dike rocks, Telluride: Cross and Puifington, 1.

dike rocks of Ruby Range: Em- mons, Cross, and Eldridge, 1.

eruptive rocks of Boulder and ad- joining counties: Palmer, 1.

igneous rocks of the Telluride dis- trict: Cross, 26.

Leadville: Rolker, 2.

Maroon formation: Spurr, 1.

Index

Petrology. — Continued.

metamorphic rocks: Lakes, 5. microscopical petrography: Zirkel. monzonitic faces of dioritic mass.

La Plata Mountains: Clarke, F.

W., 8. olivinite dike of the Magnolia dis- trict and the associated picroti-

tanite: Whitaker, 1. ore deposits, Evergreen, copper:

Hitter, 5. ore deposits. Summit district:

Hills, R. C, 3. paramorphic origin of certain min- erals: Cross, 11. pre-Cambrian rocks of Georgetown

quadrangle: Ball, S., 1. rocks of Boulder district: Lakes,

rocks of tungsten field: Lindgren,

Rosita Hills: Bayley, 1; Cross, 27. San Juan formation: Cross and

Purington, 1. sedimentary rocks, Hahns Peak:

Draper, 1. Sunset trachyte from near Sunset,

Boulder County: Breed, 1. Tepee rock: Gilbert and Gulliver,

Twin Butte, Gilbert, 6. volcanic rock of Alum Hill, Boulder

County: Andrews, 1. Weber limestone, Carboniferous:

Spurr, 1.

Phenacite, Mount Antero: Sterrett, 3. production 1888, 1892: Day, 4, 7; Henahen, 1.

Phillips County, map: Clason Map Co., 19, 21. water supply: Hay, R., 2.

Physiography, General: Beckwith, E. C, 1; Davis, Jefferson, 1; Davis, W. M., 4, 6; Elndlich, 4, 5; Fos- sett, F., 1 ; Foster, J. W., 1 ; Gan- nett, H., 2, 3, 4; Gardner, 3; Gil- pin, 2; Hayden, 17, 26, 28; Hum- phreys and Warren, 1; Jackson, 1, 3; King, 1; Koenigsberger, 1; Ladd, 2 ; Lindgren and Ransome.

Physiography. — Continued.

2; Loew, 1, 2, 3, 4; Marshall, W. L., 1, 2, 3; Morrison, Newell, 2; Peale, 7; Powell, 5, 6; Rhoda, 1, 2, 3; Science, 1; Scudder, 15, 18, 27; Stev.enson, 3, 7; van der Weyde, 1; Walcott, 4; Wheeler, G. M., 1, 2, 3, 5; Whipple, 1; Whitney, 1; Wilson, A. D., 1, 2, 5; Wilson, J. S., 1.

Agullar district: Lakes, 117.

altitude of Denver: Howe, H. A.,

altitudes, Arkansas Valley: Wal- cott, 6.

altitudes In Colorado, dictionary of: Gannett, H., 10, 11, 15, 24.

altitudes, in Colorado: Henahen, 1; Wilson, Henshawe, Douglas, and Goode, 1.

arable and pasture lands : Gannett, H., 6.

Archuleta County: Lee, H. A., 9.

area, land and water surface: Gan- nett, H., 26.

area, land surface: Newell, 14.

Arkansas Valley: Adams, G. I., 3; Darton, 13; Gilbert, 5; Walcott, 6; Westgate, 1.

Aspen: Henrich, 2; Spurr, 1.

Book Cliffs: Richardson, 1.

Boulder: Emmons, Cross, and Eld- ridge, 2 ; Fenneman, 5 ; Lakes, 6.

boundaries of the state: Gannett, H., 20; Keyes, 1.

Canon City: Walcott, 3.

Canyon embayment: Darton, IS.

canyons: Bross, 1.

Castle Rock: Lee, W. T., 5.

Chaffee County: Lindgren, 8.

Chalk Bluffs: Henderson, 7.

Clear Creek: Underbill. 4.

Colorado Canyon : Davis, W. M., 9.

Colorado plains: Davis, W. M., 3.

Colorado plateau: Gilbert, 2.

Cripple Creek district: Cross and Penrose, 1; Lindgren and Ran- some, 1, 3.

Custer County: Lee,'H. A., 9.

Index

Physiography. — Continued.

declination, table of: Gannett, 14.

Denver Basin: Emmons, Cross, and Eldridge, 2.

Dolores County: Walcott, 7.

Dolores plateau: Cross and Ran- some, 1; Cross, Spencer, and Purington, 1.

Dolores Valley: Cross and Ran- some, 1.

Durango: Taff, 1.

eastern Colorado: Hay, R.,2.

elevations, list of: Gannett, 5, 7.

Elk Mountains: Emmons, Cross, and Eldridge, 1.

Elmoro quadrangle: Hills, R. C,

Empire mining district: Spurr,

Garrey, and Ball, 1. Eocene and Miocene drainage:

Hills, R. C, 17. Florence oil fields: Eldridge, 5. Florissant lake basin: Henderson.

Fort Garland : Carpenter, 1. Fremont County: Lindgren, 8. Front Range: Davis, W. M., 10, 11;

Hayden, 18. gazetteer of Colorado : Gannett, 25. geographical positions : Cross,

Spencer, and Purington, 1. geographic positions, a dictionary

of: Gannett, 13. geographic report: Bechler, 1;

Gannett, H., 1; Wilson, A. D., 4. Georgetown: Ball, S., 1; Crosby,

4; Spurr and Garrey, 1; Spurr,

Garrey, and Ball, 1. glaciers: Shaler and Davis, 1. Grand River valley: Riggs and

Farrington, 1. Greeley: Boyd, D., 1. Green Mountain: Darton, 13. Green River: Emmons, 26. Gunnison County: Gannett, 12;

McConnell, 1. Hahns Peak : Draper, 1 ; George

and Crawford, 1. % Hinsdale County: Lee, H. A., 9.

Physiography. — Continued.

hogbacks, west of Denver: Gan- nett, 19.

Idaho Springs: Spurr and Garrey,

lakes, ancient: Blake, W. P., 1; Stevenson, 3.

lake basins: Davis, W. M., 2; Marsh, 2.

Lake County: Lee, H. A., 9.

La Plata Mountains: Cross, Spen- cer, and Purington, 1; Freeman, 1; Lee, H. A., 9; Walcott, 7.

Las Animas County, Mesa de Maya: Keyes, 1.

Leadville: ETmmons, 9; Freeland, 1; Weunsch, 6.

Manitou embayment: Darton, 13.

meridian marks: Walcott, 7.

Mesa Verde: Newell, 10.

Middle Park: Bechler, 1; Henning,

1; Ladd, 1. Mineral County: Lee, H. A., 9. Miocene drainage: Hills, R. C, 17. Montezuma County: Lee, H. A., 9. Mosquito Range: Emmons, 9. Mount McClellan: Berthoud, 3. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1. Nepesta quadrangle: Fisher, 1. northeastern Colorado: Dodds, 1. northwestern Colorado: Hewett,

1; Newell, 16; White, 26. Ouray district: Kedzie, 1; Koenig,

3; Purington, 3; Titcomb, 1. Palmer Lake district: Canon, 9. Park County: Sadtler, 1. Pawnee Buttes: Henderson, 7. Pikes Peak district: Cross, 24;

Lakes, 29; Mathews, 1, 2. Pitkin County: Gannett, 12. place names, origin of: Gannett,

21, 23. Placerville: Hillebrand and Ran-

some, 1. Placerville, west of: Hillebrand

and Ransome, 2. Plomo: Gunther, 1. Pueblo quadrangle: Gilbert, 7.

Index

Physiography. — Oi/udnued.

Rico Mountains: Cross, 31; Cross and Ransome, 1; Cross and Spencer, 1; Ransome, 2; Rick- ard, T. A., 7.

Rio Blanco oil field: Gale, 5.

river terraces, San Juan: Spencer,

rock streams, Alma district: Pat- ton, 10.

Rosita Hills: Carpenter, W. L., 1; Cross, 27.

Rosita and Silver Cliff: Emmons,

Routt County, Yampa: Fenneman and Gale, 2.

Sangre de Cristo Range: Wulston,

San Juan: Chittenden, 1; Com- stock, 1, 7; Cross and Purington, 1; Finch, 1; Lakes, 40; Spencer, A. C, 4; Walcott, 7.

sand dunes, San Luis Valley: In- gersoll, 1.

San Miguel County: Lee, H. A., 9;

Spaulding,' 1. secular variation: Gannett, 14. Sedgwick County: Walcott, 7. Sierra Blanca: Wulston, 3. Silver Cliff and Rosita Hills:

Cross, 27. Silverton: Cross, Howe, and Ran-

some, 1; Ransome, 3. south central Colorado: Bergland,

E., 1. southeastern Colorado, canyons of:

Lee, W. T., 7. southeastern Colorado: Wilson, A.

D., 3. Spanish Peaks: Hills, 25. Summit County: Lakes, 195; Pat- ton, 7. Tenmile quadrangle: Emmons, 27. Telluride quadrangle: Purington,

Tepee Buttes: Gilbert and Gulliver,

topographic maps, construction :

Thompson, A. H., 2.

Physiography. — Continued.

topographic surveying, map show- ing, 1903-1904: Walcott, 11.

topographic surveying, map show- ing: Walcott, 13.

triangulation: Wilson, Renshawe, Douglas, and Goode, 2, 4; Gan- nett, S. S., 1,2,3; Walcott, 6.

Trinidad: Lakes, 6.

Walsenburg: Hills, 16.

White River district: Chittenden,

PIctou, coal, analysis: Meade, 1.

Piedra River, hydrology: Newell, 7, 12. pi lies Peak, General: Belcher, 1; Cross,

amazonstone: Henahen, 1. andesite, analysis: Clarke, F. W.,

basalt, analysis: Clarke, F. W., 9. bastn&site and tysonite: Allen and

Comstock, 1 ; Hidden, 3. breccia, andesite: Cross, 24. cryolite: Clarke, F. W., 9; Ohly, 2. diabase: Cross, 24. geology, dynamic: Cross, 24, 25;

Lakes, 29, 33; Mathews, 1, 2;

Newsom, 1. geology: Hayden, 6, 14; Peale, 5. granite, composition: Clarke, F.

W., 9; Mathews, 1. granitic rocks: Cross, 2, 4; Lakes.

18, 33; Mathews, 2. iron mica: Clarke, F. W., 2. map: Cross, 24; U. S. G. S. mica: Clarke, F. W., 3. minerals: Cross, 22; Cross and

Hillebrand, 1, 3, 4; Hidden, 1;

Hillebrand, 10; Smith, W. B., 1. orthoclase, analysis: Endlich, 6. paleobotany: Nicholson, 1 ; paleon- tology: Cragin, 4, 5. phenacite: Penfield, 1. phonolite: Cross, 24. physiography: Cross, 24; Lakes,

29; Mathews, 2. quartz, smoky: Sterrett, 3. resources of the district: Birkin-

bine, 2. rhyolite: Cross, 24.

Indbx

Pikes Peak. — Continued.

rocks, analysis: Clarke and Hille- brand, 1; Mathews, 2.

sandstone dikes: Cross, 25.

topaz: Cross, R. T., 2; Eakle, 1.

trachyte: Cross, 24.

tysonite, and bastnasite: Allen and Comstock, 1; Hidden, 3.

Pitchblende, (General: Ohtegnot, 1.

Gilpin County: Fleck, 2, 3.

tellurium gold, and, in Colorado: Hill, N. P., 1.

Pitkin County. See also Aspen.

coal, analysis: Campbell, M. R., 5.

gas: Hills, R. C, 7.

geology, economic: Henrich, 2; Lee, H. A., 9.

halotrichite: Bailey, E. H. S., 1, 2.

iron ore, Taylor Peak and White- pine: Harder, 2.

iron ore: Devereux, 1; Leith, 1; Snedaker, Z.

manganese: Harder, 4.

marble: Merrill, 2.

mines: Burchard, H. C, 2, 3, 4; Henderson, C. W., 2, 4: Hodges, 1; Lakes, 5; Lee, H. A., 9; Mg. Rept, 18, 24.

ore deposits: Lakes, 143; Lee, H. A., 9; Rickard, T. A., 28.

paleontology, fossils described : Eastman, 1.

physiography: Gannett, H., 12.

rocks, Carboniferous, analysis of: Clarke and Hillebrand, 1.

silver: Mg. Rept, 11.

Taylor Peak, iron : Harder, 2.

triangulation : Gannett, H., 12.

Whitepine, iron: Harder, 2.

Placers, General: Emmons and Becker, 2; E. and M. J., 6; Lakes, 46; Lindgren, 2; Mg. Rept., 2; Rick- ard, T. A., 6.

Akron: Lakes, 24.

Alma and Fairplay: Lakes, 21.

Breckenridge : Bradford and Cur- tis, 1; Brown, T. A., 1; Janin, C, 1; Lakes, 121, 143, 191, 195, 199; Mg. Rept, 4; Of, 1; Ransome, 5.

Placers. — Continued.

Clear Creek: Callbreath, 1; Lakes, 19; Spurr and Garrey, 2.

Cripple Creek : Cross and Penrose, 1; Lindgren and Ransome, 3.

Dillon: Lakes, 249.

Fairplay: Lakes, 21, 81.

Fourmile: Hoover, 3.

Grand River, upper valley: Hart- ley, C, 2.

Gray back: Patton, 8.

Hahns Peak: Draper, 1; Gale, 1; George and Crawford, 1; Janin, C, 1; Lakes, 210.

iron: Putnam, 1.

La Plata Mountains: Cross, Spen- cer, and Purington, 1.

Lay: Fleck and Haldane, 1.

Leadville, California gulch: Lakes, 21; Warwick, la.

mining, 1876: E. and M. J., 4—1904: Richards, 8.

Monarch-Tomichl : Crawford, 4.

Newlins Gulch: Butler, G. M., 3.

Park County: Emmons, S. F., 7; Lakes, 5; Lee, H. A., 9.

Routt County: Lee, H. A., 9.

San Miguel County: Ihlseng, 1; Purington, 2.

South Park: Lakes, 110.

Summit County: Lee, H. A., 9.

Tarryall, Park County : Hartley, 1.

Telluride: Cross and Purington, 1.

Willow Creek: Hartley, C, 2. Placervltie, carnotite: Fleck and Hal- dane, 2; Hillebrand and Ran- some, 1, 2.

Cashin mine, ore deposits: Em- mons, W. H., 3; Lindgren, 9.

gold: Hess, 4.

uranium and vanadium: Fleck, 4; Hess, 3, 4; Mg. World, 8. Plains area, gypsum: Darton, 9. Plateau Creek, erosion: Endlich, 8;

Gilbert 2. Platinum and allied metals: Lindgren,

production 1902, 1905: Day, 15, 18. Piatora, ore deposits: Barnes, 1. Platte Basin, hydrography: Newell, 3.

Index

Platte Canyon, granite, red, analysis: Lakes, 165.

map: U. S. G. S.

rocks, analysis: Clarke, F. W., 5. Platte River, hydrography: Newell, 3.

Platte River valley, fossil woods: Can- non, 10a.

Platteville, coal: Hayden, 19.

Pleistocene. See also Quaternary and Glaclation. Stratigraphy.

General : Capps and Leffingwell, 1; Cross, 27.

Apishapa quadrangle: Stose, 1.

Denver Basin: Emmons, Cross, and Eldridge, 2.

glaciation, Sangre de Cristo Range: Siebenthal, 2.

Hahns Peak: George and Craw- ford, 1.

ice period of North America: New- berry, 9.

Ouray quadrangle: Cross, Howe, and Irving, 1.

San Juan: Atwood and Mather, 1. Paleontology.

General: Cockerell, 50; Cragin, 3,

Pliocene. Stratigraphy. General: Cope, 18; Hayden, 14, 19;

Peale, 5, 7, 12. eastern Colorado: Cannon, 5. lake basins: Marsh, 2. Tertiary: King, 1, Paleontology. General: Cope, 15 18; Dall and Harris, 1 ; King, 1 ; Lock wood, 1 ; Huerfano County: Cragin, 1, 3,

Plomo, gold: Gunther, 1.

syenite gneiss: Gunther, 1.

Plum Canyon, Morrison: Lee, W. T., 4.

Pocahontas and Humbolt mine, 1875- 1877: Clark, R. N., 2.

Polyzoa. See Bryozoa.

Porter, coal, analysis of: Cross, Spen- cer, and Purington, 1.

Po8t-C retaceous. Stratigraphic.

General: Endlich, 5; Peale, 13.

Grand River district: Peale, 12.

northwestern Colorado: White, 4. Paleontology.

General: White, 3.

Post-Devonian, igneous rocks: Mon- arch-Garfleld area: Crawford, 3.

Po8t-Laramle beds, (General: Cross, 18; Hills, R. C, 17. Middle Park: Cross, 19; Hills, R. C, 21.

Post-Tertiary: St. John, 1.

Pottery, clay: Bailar, 3; Lakes, 205;

Ries, 1. plant, Colorado Springs: Riddle, 1. production 1895, 1900-1905; Day, 9,

13, 14, 15, 16, 17, 18—1909: Mid-

dleton, 2.

Poudre Lakes district: Draper, 2.

Poughkeepsle Gulch, alaskite: Am. Jour. Sci., 1.

Powells Park: White, 4. Pre-Cambrlan, General: ETmmonB, Cross, and Eldridge, 2; Endlich, 1, 4, 5; Hayden, 6, 14; Hill, J. M., 1; Marvine, 1, 2; Peale, 5, 7; Ste- venson, 3; Van Hise and Leith,

Black Hills: Van Hise, la.

Breckenridge : Ransome, 5.

Elk Range: Holmes, 1.

Empire mining district: Spurr, Garrey, and Ball, 1.

geology: Van Hise, 2.

Georgetown: Ball, 1.

Gunnison gold belt: Lakes, 20.

Hahns Peak: George and Craw- ford, 1.

map: Van Hise, 2; Van Hise and Leith, 1.

Monarch-Garfield area: Crawford,

Monarch-TomichI district: Craw- ford, 4.

Salida: Cross, 20.

topography: King, 1.

western Colorado: Cross, 35.

Index

Pre-Cambrian Topography. Colorado Range: King, 1. Medicince Bow Range: King, 1. Park Range: King, 1. Rocky Mountain System: King, 1. Prc*Carbonlferout, central Colorado:

Berkey, 1. Pre-Cretaceout, Yampa field: Fenne-

man and Qale, 2. Pre-MMozolc and Mesozoic, map:

King, 1. Precious stones: Lakes, 212; Sterrett, production: Day, 1, 14; Henahen, Primero, coal: Hosea, 4; Herrick, 5. coal mine explosion: Herrick, 4. Prowers County, Comanche: Darton, map: Clason Map Co., 9, 29. rocks, analysis of: Hillebrand, 11. Pueblo, Arkansas River: Freeman and

Bolster, 2. Pueblo County, map: Clason Map Co.,

15, 38. Pueblo quadrangle, coal: Gilbert, 7. clay, analysis of: Clarke and Hille- brand, 1. clay: Gilbert, 7.

fire clay, analysis: Van F. Fur- man, 1. fire clay: Gilbert, 7. Fort Garland, geology: Hawn, L.,

geology, dynamic: Gilbert, 7. geology, economic: Loew, 2. gypsum: Gilbert, 7. hydrology: Gilbert, 7. iron ore: Gilbert, 7. limestone: Burchard, E. F., 8; Gil- bert, 7. map: Gilbert, 7; U. S. G. S. marble: Gilbert, 7. petroleum: Gilbert, 7. physiography: Gilbert, 7. resources: W. P. H., 1. rock gas: Gilbert, 7. rocks, analysis of: Gilbert, 7. sandstone: Gilbert, 7. water analysis: Fisher, 1. zinc smelting: Meister, 1.

Pumice: Phalen, 1.

production, 1907: Thom, 2.

Purgatory district, coal: Richardson, 2.

Purgatory River, fossils from: Stan- ton, 3.

hydrology: Freeman and Bolster, 2; Freeman and Mathers, 1; Newell, 12.

section: Stanton, 3. Pyrites, production 1894, 1897, 1898: Roth well, 3, 6, 8—1899: Day, 12 —1903: Newland, 1; Phalen, 3. Quartz, General: Lakes, 43.

production 1892: Day, 7.

rose: Henahen, 1; Sterrett, 2, 7.

rose, production: Day, 18; Thom,

smoky, Pikes Peak: Sterrett, 3. Quartzite, Monarch-Tomichi district:

Crawford, 4. Quartzite Mountains, pre-Cambrian : Chittenden, 1; Rhoda, 1, 2; Van Hlse, 1. Quaternary. Stratigraphy.

General: Emmons, 2; King, 1; Lakes, 5, 10; Newberry, 5; Ste- venson, 7, 8; Henderson, 4, 15.

Alma district: Patton, 10.

Anthracite-Crested Butte : Cross, Eldridge, and Emmons, 1.

Apishapa quadrangle: Stose, 1.

Arkansas Valley: Darton, 13; Gil- bert, 5.

Aspen district: Spurr, 1.

Bear Creek district: Emmons, W. H., 2.

Book Cliffs: Richardson, 1.

Boulder district: Fenneman, 5; Lee, 2.

Boulder County: George, 3.

Breckenridge district: Ransome, 5.

Castle Rock district: Lee, 5.

Clear Creek district: Underbill, 4.

Creede district : Emmons and Lar- sen, 1.

Danforth Hills and Grand Hog- back: Gale, 3.

Denver Basin: Cannon, 2, 10; Em- mons, Cross, and Eldridge, 2.

Indbx

Quaternary. — Continued. Stratigraphy, — Continued.

Downtown district, Leadville: Em- mons and Irving, 1. Eagle County: Burchard, 1. eastern Colorado: Darton, 7. Elk Mountains: Lee, 13.

Elmoro quadrangle: Hills, R. C,

El Paso County: Richardson, 3. Engineer Mountain quadrangle : Cross, 41.

Foothills east of Range, northern Colorado: Henderson, 10.

Georgetown quadrangle: Spurr and Garrey, 1; Spurr, Garrey, and Ball, 1.

Grand Mesa coal field: Lee, 10.

Grayback district: Patton, 8.

Gunnison County: Hill, G. M., 1.

Hahns Peak district: Gale, 1; George and Crawford, 1.

Idaho Springs district: Spurr and Garrey, 2.

Lake City district: Irving, 3.

La Plata quadrangle: Cross, Spen- cer, and Purington, 1.

Leadville quadrangle: Capps, 1; Emmons, 2, 9; Emmons and Irv- ing, 1.

Monarch-Tomichi district: Craw- ford, 3, 4.

Montezuma district: Patton, 7.

Mosquito Range: Emmons, 5.

Needle Mountains quadrangle : Cross, Howe, Irving, and Em- mons, 1.

Nepesta quadrangle: Fisher, C. A.,

Northeastern Colorado foothills : Henderson, 10.

ore in: Lakes, 135.

Ouray quadrangle: Cross, Howe, and Irving, 1; Irving, 2.

Palmer Lake: Cannon, 9.

Pueblo quadrangle: Gilbert, 7.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Red Mountain district: Fischer, 1.

Quaternary. — Continued. 8 1 rafigraphy. — Continued. Rico Mountain quadrangle: Cross, 31; Cross and Spencer, 1; Ran- some, 2.

Rocky Mountains: Emmons, 14. Sangre de Cristo Range: Sieben-

thal, 2. San Juan Mountains: Howe, 2. San Luis Valley: Siebenthal, 4, 5. Saguache Range: Capps and Lef-

flngwell, 1. Silverton quadrangle: Cross, 32;

Cross, Howe, and Ransome, 1;

Ransome, 3. Spanish Peaks quadrangle: Hills,

R. C, 25. Taylor Peak district: Harder, 2. Tenmile district: Emmons, 27. Walsenburg quadrangle: Hills, R.

C, 15. White Pine district: Harder, 2. Yampa coal field: Fenneman and

Gale, 1, 2. Paleontology. northwestern Colorado: Gale, 8.

Quicksilver. See also mercury.

La Plata Mountains: Freeland, H.

C, 1. mining: Van Wagenen, T., 2. production, 1895: Rothwell, 4.

Rabbit Ears Range, geology: Grout, Worcester, and Henderson, 1. Muddy Pass: Draper, 2.

Radium: Henahen, 1; Of, 1; Phillips, 1. See also Uranium, springs bearing. Delta County: Headden, 5.

Ragged Mountains, Chair Mountain, coal: Ilewett, 1. geology: Cross, 23. sanidine in rhyolite: Cross, 6.

Ralston Creek, coal: Emmons, Cross, and Eldridge, 2; Macfarlane, 1. pre-Cambrian: Van Hise, 1.

Ralston Dike, basalt: Emmons, Cross, and Eldridge, 2.

Rampart: Hague and Emmons, 1; King, 1.

Index

Rangely district, map: Gale, 5; U. S. G. S.

oil field, analysis of oil: Gale, 5; Mg. World, 4.

paleontology: Gale, 5.

Rare minerals: Frenzel, 1; Lakes, 205; Ores and Metals, 3, 9; Wood, J. R., 1.

Raton, coal field: Endlich, 4; Hills, R. C, 22; Lakes, 69; Storrs, 1; van Diest, 10. extrusive rocks: Hills, R. C, 20. Laramie: Lee, W. T., 11. Raven Park, geology: White, 4, 26. hydrology: Gale, 5.

oil: Gale, 5; Mg. World, 4. water analysis: Gale, 6.

Raven Hill, ore shoots: Skews, 3.

Recent: Peale, 7.

post-glacial, Mosquito Range: Em- mons, 9.

Reclamation work. General: Blanch- ard, 1.

Colorado and Grand rivers: Wal- cott, 13.

Grand Valley: Newell, 21; Quin- ton, J. H., 1.

in 1902: Newell, 19—1903: Fel- lows, 2—1903-1904: Walcott, 11; Fellows, 3—1906: Newell, 20.

Red Cliff, General: Hoskin, A. J., 2; Lakes, 10.

Ground Hog mine: Lakes, 214.

hessite from: Pearce, 15.

ore, analysis of: Lakes, 122.

ore deposits: Emmons, 10; Lakes, 21, 122; Pearce, 15; Sinirr, Car- rey, and Ball, 1; Weunsch, 5; Rickard, T. A., 28.

Red Cloud mine, tellurium ores: Silli- man, 1.

Red Mountain. See Ouray.

Red River, Cretaceous, upper: Hill, R. T., 1.

Red Rock Basin: White, 4.

Redwtfll Basin: kaolin, analysis of: ESakins, 3.

Reptilla, Atlantosaurus, McElmo: Cross, Spencer, and Purington, 1; Williston, 3.

Baptandon: Williston, 3.

Ceratopsia, Denver and Arapahoe formations: Hatcher, Marsh, and Lull, 1.

dinosaur, Brachiosaurus altitho- rax: Riggs, la.

dinosaur, Creosaurus: Williston, 2.

dinosaur. Cretaceous: Marsh, 3.

dinosaur, Dakota, carnivorous: Cope, 27.

dinosaur, Dakota: Cope, 25, 28, 29,

31, 39; Lucas, 1; Marsh, 3.

dinosaur, Denver group: Cannon, 3, 6.

dinosaur, Jurassic: Cope, 24, 33, 35, 44, 51; Hatcher, 5; Marsh, 3, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25, 26, 27, 28, 29, 31,

32, 33, 34, 36, 38, 40, 42, 44, 45; von Huene and Lull, 1; Willis- ton, 1.

dinosaur, Laramie: Cope, 67.

dinosaur, Morrison: Lee, W. T., 5.

dinosaur. Tertiary: Cannon, 3.

dinosaur, Triassic: Marsh, 45; von Huene and Lull, 2.

dinosaur: Lakes, 1, 6; Lucas, 1; Riggs, la.

Hallopoda: Marsh, 32; Williston,

Jurassic, Cametosaurus: Gilmore,

Jurassic, Goniopholis: Cope, 64.

Jurassic, Morosaurus agilis: Gil- more, 1.

Jurassic, Stegosauria: Marsh, 6,

Jurassic, Sauropoda: Marsh, 13.

Jurassic: Marsh, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 24. 44.

Miocene tortoise: Hay, O. P., 4a.

Morrison, Morosaurus agilis: Gil- more, 1.

saurians, Dakota: Cope, 36.

Sauropoda, Diplodocidae: Marsh,

Index

ReptI I ia. — Continued.

Sauropodan gastroliths: Cannon,

Sauropoda: Marsh, 13. Stegosaurus: Lull, 2; Marsh, 34. Theropoda: Marsh, 19. tortoises: Baur, 1; Hay, O. P., 4a.

Reservoir site, General: Thompson, 1. Antero: Schuyler, 1. area and capacity: Newell, 16. Arkansas Basin: Thompson, 2. Kremmllng: Quinton, J. H., 1. Lost Canyon: Schuyler, 1. Mancos Canyon: Newell, 14. South Fork: Schuyler, 1. Sugarloaf on Ike Fork : Hosea, 7. survey of: Newell, 12. Tarryall: Schuyler, 1.

Rico, General: Lakes, 44.

acanthite, Enterprise mine: Ches- ter, 1.

alunite rocks, analysis: Cross and Spencer, 1.

basic dike rocks: Cross and Ran- some, 1; Cross and Spencer, 1.

building stone: Cross and Ran- some, 1.

Calico Peak, porphyry: C'ross and Spencer, 1.

Coal, Dakota formation: Cross and Ransome, 1.

geology, dynamic: Cross and Ran- some, 1; Cross, Spencer, and Purington, 1; Farish, 3; Jenney, 1; Lakes, 120, 150; Ransome, 2; Rickard, T. A., 7, 12; Van Hise, 4, 6; Weed, 2.

Enterprise mine: Chester, 1; Rick- ard, T. A., 4, 7, 12.

gold : Cross and Ransome, 1 ; Farish, 3; Lakes, 44; Ransome, 2; Rickard. T. A., 7.

granite gneiss: Clarke. F. W., 8.

gypsum: Ransome. ?.

hornblendic monzonite i)nrphyry: Cross and Spencer, 1.

hydrology: Cross and RaM.;onu, 1; Cross and Spencer, 1.

jarosite: Ransome, 2.

landslides: Cross, 31.

R Ico. — Continued.

lead: Cross and Ransome, 1; Ran- some, 2.

limestone, alteration product, an- alysis: Ransome,

limestone, magnesian: Farish, 3.

limestone, ore-bearing: Cross and

Spencer, 1. limestone: Cross and Ransome, 1.

map: Cross and Ransome, 1; Cross and Spencer, 1; Ransome, 2; U. S. G. S.; Wittle, 1.

minerals, analysis: Clarke, F. W.,

mines, production: Cross and Ran- some, 1; Ransome, 2; Rickard, T. A., 7.

monzonite, quartz-bearing: Cross and Spencer, 1.

Newman Hill: Farish, 3; Lakes,

ores, analysis: Ransome, 2; Rick- ard, T. A., 7.

ore deposits, blanket deposits: Cross and Ransome, 1.

ore deposits, lodes : Cross and Ran- some, 1.

ore deposits, Newman Hill: Far- ish, 3.

ore deposits: Comstock, 7; Lakes, 143; Ransome, 2; Rickard, T. A., 28; Spurr, Garrey, and Ball, 1.

physiography: Cross, 31; Cross and Ransome, 1; Cross and Spencer, 1; Ransome, 2; Rick- ard. T. A., 7.

quartzlte: Cross and Spencer, 2.

sandstone, alteration product, an- alysis: Ransome, 2.

silver: Cross and Ransome, 1; Lakes, 44; Ransome. 2; Rick- ard, T. A., 7.

vein structure. Enterprise mine: Rickard, T. A., 12.

Wellington mine: Salt Lake Mg. Rev., 2.

zinc: Cross and Ransome, 2.

Rifte asphaltum: Lakes, 116.

paleontology: Cockerell, 20d.

Index

Rio Blanco County, carnotite, map: Gale, 2; xMg. World. 2. 8. Coal Creek, vanadium from: Mg. World, 8.

coal, analysis: Campbell, M. R., 5; Fleck and Haldane, 1 ; Gale, 5.

coal: Fleck and Haldane, 1; Gale,

geology, dynamic: Gale, o.

map: Gale, 2.

mineral production: Henderson,

C. W.. 4. minerals: Mg. World, 3. oil, analysis: Lakes, 97. oil, map: Gale, 5; Lakes, 86, 97,

99; Mg. World, 4; Ores and

Metals, 5. physiography: Gale, 5. uranium : Blanc, 1 ; Lee, H. A., 7. uranium-vanadium : Fleck and

Haldane, 1; Mg. World, 8. vanadium: Hess, 1.

Rio Cimarron, Morrison: Lee, W. T., 6. section: Stanton, 3.

Rio Dolores: Holmes, 2; Peale, 12.

Rio Grande County, enargite: Spencer,

L. J., 1. geology, dynamic: Patton, 2. geology, economic: Emmons, 7. map: Clason Map Co., 24. mines, production: Burchard, H.

C, 2, 3; Henderson, C. W., 2;

Lee, H. A., 9; Mg. Rept., 18. ore deposits: Lakes, 37; Lee, H.

rhyolite, analysis: Clarke, F: W.,

rocks, analysis: Clarke, F. W., 8. Summit, gold: Hills, R. C, 3;

Lakes, 37. Summit, Little Anne mine: E. and

M. J., 7; Robins, 1. Summit, ore deposits: Hills, R. C.,

Summit: Comstock, 7; Endlich, 4,'

5; Hills, R. C, 3; Lakes, 37;

Lindgren, 1; Wheeler, G. M., 6. triangulation: Gannett, S. S., 3. volcanic craters: van Diest, 9.

Rio Grande River, General: Cope, 23; Endlich, 3, 4; Wheeler, G. M., 6.

erosion forms: Patton, 2.

hydrography: Cross, Howe, and Ransome, 1; Freeman and Ma- thers, 2 ; Newell, 2, 4, 6, 7, 12, 14, 16; Taylor and Hoyt, 1, 2; Tay- lor and Lamb, 1.

valley: Newberry, 3;

Rio San Miguel: Peale, 12.

Roan (Book Cliffs): Peale, 12.

(Book Mountains): Beckwith, E. G.. 1.

Roaring Fork: Emmons, 20; Holmes, 1. Rob Roy, coal mine: E. and M. J., 3. Roc Creek, carnotite: HlUebrand and Ransome, 1. vanadium: Hess, 1; Lindgren, 9. Rock Creek, coal field: Hewett, 1; Lakes, 6. marble: Lakes, 6. Rockford, Donaldson mine: Tonge, 13. Rock gas, Pueblo quadrangle: Gilbert,

Rocks described. See list, page 470. Rocky ISIountains, General: Emmons, 20; Newberry, 3; Suess, 1; You- mans, 2. age: Peale, 10, 11; Stevenson, 3,4. fossils from, described: Dana, J.

D., 1 ; Meek, 3. front: Davis, W. M., 6. map: Emmons, 20; Hague andE>m- mons, 1; Long, 1. Rollins, coal field: Lee, W..T., 10. Rosemount, riebeckite granite: Clarke,

F. W., 8. Roaita, andesite: Cross, 27.

Bassick mine, breccia and associ- ated ores: Lakes, 245. copper: Clark, R. N., 2. geology, economic: Emmons. 7;

Wheeler, G. M., 2. geology: Lakes, 57. gold: Clark, R. N., 2; Mg. Rept,

Humboldt-Pocahontas vein: Clark,

R. N., 2; Lakes, 220. minerals, analysis: Eakins and Chatard, 1.

Indbx

Rotita. — Continued.

mines: Burchard, H. C, 2.

ore deposits: Wulsten, 1; Lakes,

physiography: Carpenter, 1. rocks, analysis of: Clarke and

Hillebrand, 1. rocks: Cross, 12. silver: Clark, R. N., 2.

Roslta Hifis, alunite and diaspore, an- alysis of: Cross, 16

diaspore, analysis of: Cross, 16; Melville, 1.

geology of: Cross, 16, 17, 27; Wul- sten, 1.

physiography: Cross, 27.

rock formation: Bayley, 1.

Rotlta-Sllver Cilff. See also Roslta and

Silver Cliff, geology, dynamic: Emmons, 24;

Lee, H. A., 9; Spurr, 1; Welles

and Lakes, 1. geology: Cross, 27. map: Cross, 27. mines: Emmons, 23, 24; Lakes

142; Tolman, 1. ore deposits: Clark, R. N., 2;

Lakes, 21, 214; Rickard, T. A.,

28; Spurr, Garrey, and Ball, 1. rocks, analysis of: Cross, 27. silver: Emmons, 24; Lee, H. A., 9;

Lakes, 55. spherulites: Eakins und Chatard,

Routt County, carnotite deposits: Gale,

6; JJndgren, 9. coal, analysis of: Campbell, M. R.,

5; B. and M. J., 37; Gale, 3;

Headden, 9; Parsons and Lid- dell, 1; Weston, 5. coal : Chisolm, 3 ; Craise, 1 ; E. and

M. J., 37; Gale, 3; Headden, 8.

9; Herrick, 2; Lakes, 167, 168,

172, 190; Lee, H. A., 9; Parsons

and Liddell, 1 ; Weston, 5. coal. See also Routt County,

Yampa coal field, geology, dynamic: Parsons and

Liddell, 1; Lakes, 162. geology, economic: Emmons, 7.

Routt County. — Continued.

gold placers, Lay: Gale, 4; Rick- ard, T. A., 9.

Hahns Peak: George and Craw- ford, 1; Lakes, 210; Lee, H. A.,

hydrology: Lakes, 162.

Lay, placers near: Gale, 4; Rick- ard, T. A., 9.

map: Clason Map Co., 3, 29.

minerals: Gale, 6.

mineral waters. See Mineral Springs, in general index.

mines, production: Burchard, H. C, 2; Henderson, C. W., 4.

oil: Lakes, 86; Ores and Metals. 5 ; Parsons and Liddell, 1.

olivine basalt, analysis of: Clarke, F. W., 8.

onyx beds: Parsons and Liddell, 8.

ore deposits: Lakes, 243.

placer mines: Gale, 4; Hoover, 3; Lakes, 210; Lee, H. A., 9; Rick- ard, T. A., 9; Snow, 1.

Rabbit Ears Range: Grout, Wor- cester, and Henderson, 1.

rocks, analysis of: Clarke, F. W., 7.

springs: Lee, H. A., 9.

triangulation and traverse: Wilson

et al., 4. uranium: Blanc, 1; Lee, H. A., 7. vanadium: Hess, 1. Yampa coal, analyses: Campbell.

M. R., 2 ; Fenneman and Gale, 1 ;

Headden, 8; Herrick, 2; Lakes.

161; Weston, 6. Yampa coal field, map: Fenneman

and Gale, 1, 2; Gale, 7. Yampa coal field, physiography:

Fenneman and Gale, 2. Yampa coal field: Campbell, M. R.,

2; Fenneman and Gale, 1, 2;

Gale, 7; Herrick, 2; Hills, R. C.

22; Jones, J. D., 3; Lakes, 69,

129, 153, 161, 129; Mg. Reprt, 36;

Storrs, 1; Thomas, K., 1;

Weston, 5, 6, 7; White and

Perry, 1.

Indbx

Ruby (Floresta), coal: Rosea, 6.

mines, production, 1880: Burchard, H. C>, 1. Ruby Range, dike rocks: Emmons, Cross, and Eldridge, 1. geology: Cross, 23. ore deposits: Rickard, T. A., 28.

Running Lod mine, water analysis: Headden, 4.

Ruttelfy placer deposits: Patton, 8.

Russell Gulch, enargite: Spencer, L. J.,

meteorite: Smith, J. L., 1, 2.

ore deposits: Rickard, T. A., 28.

Saguache, Liberty, platinum and allied metals: Lindgren, 10.

Saguache County, calcite: Rogers, A. F., 1.

Creede. See Creede.

geology, economic: Emmons, 7; Lee, H. A., 9.

iron ores, analysis of: Chauvenet,

iron ores: E. and M. J., 40; Sued* aker, 2.

map: Clason Map Co., 24.

mines, production 1881-1S83: Bur-

cliard, H. C, 2, 3, 4—1900:

Hodges, 1. ore deposits: Kirby, 1; Lee, H. A.,

triangulation: Gannett, S. S., 3. turquoise: Jones, F. A., 1. Villa Grove, iron deposits: Sned-

aker, 2.

St. Charles River, fossils from de- scribed: Hawn, L., 1.

St. Elmo, ore deposits: Rickard, T. A.,

St. Peters Dome, aplitic granite: Clarke, F. W., 8.

astrophyllite: Eakins, 7. minerals: Cross and Hillebrand, 3. riebecklte: Clarke and Stelger, 2;

Murgoci, 1. rutile: Schaller, W. T., 3; Smith,

W. B., 2.

St. Vrain, Fox Hills: Stevenson, G. hydrology: Lamb, Freeman, and

Henshaw, 1 ; Newell, 7, 12, 16. oil: Lakes, 68. paleontology, fossil footprints:

Parker, H. W., 1; White, 6b.

Sal Ida, General : Rath, 1.

Arkansas River: Freeman and

Bolster, 2. copper: Emmons, 21. garnet and pseudomorph : Penfleld

and Sperry, 1. geology: Lakes, 67. granite: Bailar, 3; Henahen, 1. ore deposits: Rickard, 28; Lakes,

paleontology, fossils from :

Spencer, 2. pre-Cambrian: Van Hise, 1. schists near: Cross, 20. smelter, Ohio-Colorado: Mg. Rept.,

volcanic crater near: Lakes, 244. Salt: Bailar, 3; Frazer, 1; Hague, 1; Hayden, 6; Peale, 8; Wilson, J. S., 1. Sindbad Valley: Gannett, H., 4. Sanborn quadrangle, map: U. S. G. S. San Cristobal, alunite: Larsen, E. S., 1. San Cristobal Lake, origin: Cross, 40. Sand, production: Burchard, E. F., 4,

6, 8; Day, 17, 18; Parker, E. W., 7; Thom, 1, 2.

Sand-lime brick. General: Middleton, 3.

production: Burchard, E. F., 8; Thom, 1, 2. Sandstone. General: Merrill, 4.

Armejo quarry: Chatard, 1.

Elmoro quadrangle: Hills, R. C,

eastern foothills: Foster, Wm., 1.

Nepesta quadrangle: Fisher, 1.

production 1888-1905: Day, 4, 6, 6,

7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18—1899: Roth well, 7—1906- 1907: Thom, 1, 2—1909: Bur- chard, E. F., 4.

Pueblo quadrangle: Gilbert, 7. Spanish Peaks: Hills, R. C, 25. Walsenburg: Hills, R. C, 15.

Index

Sangre de Cristo Range. General:

Bagg, 2; Beckwith, 1; Endllch,

1, 4; Hills, 20; Siebenthal 2. copper: Bagg, 2. geological formations, section:

Lee, W. T., 8. geology: van Diest, E. C. and P.

H., 1. glaciation: Siebenthal, 2. gold: Hawn, L., 1; Rhoda, 3; van

Diest, E. C. and P. H., 1. Grayback gold mines: Hawn, L.,

1 ; Patton, 8. intrusive bodies: Hills, 20. mining: Rickard, T. A., 6; Wul-

ston, 2. physiography: Wulston, 2. silver: van Diest, E. C. and P. H.,

structure: Hills, 20.

San Juan. General: Comstock, 7; End- lich, 2, 3, 4, 5; Lakes, 40, 42; Lindgren, 1, 2; Morrison, R. S., 1; Newberry, 3; Read, 5; Rhoda, 1; Wilson, A. D., 1, 2.

altitudes: Wilson et al., 3.

American Nettle mine. See Ouray County.

bismuth: Ingalls, 8. , bismuth and tungsten: Mines and Mining, 4.

bonanzas: Rickard, T. A., 17.

Camp Bird Mine. See Ouray County

central: Comstock, 7.

coal, Dakota formation: Comstock,

coal: Lakes, 181; Spaulding, 1.

copper: Comstock, 1; Endlich, 3; Ihlseng, 1.

cyanidation' of ores: Draper, 4.

Devonian: Cross, 33.

enargite: Spencer, L. J., 1.

geology, dynamic: Comstock, 1, r>. 7; Cross, 32; Cross, Howe, and Ransome, 1 ; Cross and Ransome, 1; Emmons, 29; Finch, 1; Hills, R. C, 4, 20; Howe, 1, 2; Lakes, 223; Lay, 1; Lee, H. A., 9; Pur- ington, 8; Ransome, 1; Read, 4;

San Juan. — Continued.

Rickard, T. A., 23; Snedaker, 1; Spencer, 3; Spurr, Garrey, and Ball, 1 ; Van Hise, 6.

geology, economic: Emmons, 7; Fossett, 1; Irving and Bancroft, 1; Stevens, R. P., 1.

geology, fissure system: Ransome.

geology: Comstock, 1; Chittenden, 1; Cross, Howe, and Irving, 1; Holmes, 2 ; Irving and Bancroft, 1; Lakes, 45, 50; McCauley, 1; Rhoda, 2.

glaciation: Atwood and Mather, 1; Atwood, 1.

glaciers: Hills, R. C, 4; Spencer, A. C, 3; Stone, 3.

Golden Fleece mine: Lakes, 56.

Gold Prince mine: Bacon, 1.

gold: Comstock, 1, 7; Curie, 1; E. and M. J., 36; Endlich, 3; Ihl- seng, 1 ; Prosser, 2 ; Rickard, T. A., 9; Sharwood, W. J., 1.

greenstone schists: Howe, 1.

hydrology: Newell, 12, 14.

landslides: Howe, 2.

Little Annie mine: Pearce. 15; Robins, 1.

manganese: Harder, 4.

map: Chittenden, 1; Clason Map Co., 1 ; Comstock, 1 ; Holmes, 2 : Howe, 2 ; .Ihlseng, 1 ; Thayer, 4 ; Williams, H. T., 1.

metamorphism: Comstock, 5.

milling: MacGregor, F. S., 1.

minerals, analysis of: Clarke, F. W., 6; Comstock, 1; Emmons, 7.

mines and mineral production: Burchard, H. C, 1, 2. 3, 4; Col- lins, G. E., 3, 5, 6, 9; E. and M. J., 9, 36; Finch, 1; Ihlseng, 1; Lakes, 5; Lee, H. A., 9; Mc- Cauley, 1; Mg. Investor, 4; Mg. Rept, 15, 24; Raymond, 10; Read, 3, 4 ; Rickard, T. A., 4, 18, 23; Spurr, Garrey, and Ball, 1; Storms, W. H., 1.

Index

San Juan. — Continued.

ore deposits: Bancroft/ G. J., 7; Comstock, 2; Elftman, 1; E)m- mons, W. H., 4; Finch, 1; Ihl- seng, 1; Kedzie, 1; Lakes, 10, 21, 138. 143, 233. 242, 255; Lee, H. A., 9; Read, 4; Rickard, T. A., 26; Snedaker, 1; Walsh, 1.

physiography : Chittenden, 1 ; Com- stock, 1, 7; Cross and Purington,

placer mines: McCauley, 1.

pleistocene history: Atwood and Mather, 1.

prospecting in: Lakes, 229.

quartz monzonite: Clarke. F. W.,

Red Mountain district. See Ouray County.

river terraces: Cross, Howe, and Ransome, 1; Spencer, 4.

rivers: McCauley, 1.

rocks, analysis of: Clarke, F. W.,

5,8. silver: Comstock, 1; Endlich. 3;

Hartman, 2; Ihlseng, 1; Lakes,

5; Weston, 1; W. W., 1. slides, effect of: Lakes, 253. South Mineral Creek district, ore

deposits: Lakes, 242. Sunnyside mines: Mines and Min- ing, 2. Treasure Mountain, ore deposits:

Purington, 8. Treasury Mountain, geology:

Holmes, 1. triangulation : Gannett. S. S.. 3. tungsten, hiibnerite : Genth, 2. tungsten, wolframite: Irving, 1. tungsten: Cooper. C. A., 1; George,

3; Mines and Mining, 4; Ohly.

8; Prosser, 1. uranium from: Blanc, 1; Lee, H.

A., 7. Virginius mine: Purington. 5. zinc: Osgood. 1. zinckenite: Hillebrand, 2.

San Juan Mountains: Hills, 20; Rhoda. 1,2.

San Juan River, ancient pueblos: Bar

her, E. A., 5. hydrography: Endlich, 4; Newell,

San Juan Valley: Holmes, 2.

San Luis Park, General: Gilpin, 1.

artesian water: Hills, R. T., 23.

geology, dynamic: Lakes, 102.

ore deposits: Lakes, 109. San Luis Valley, General: Beckwith, 1; Endlich, 4; Marshall, 3; Thomas, C. 2; Wheeler, G. M., 6.

artesian water: Headden, 13; Lakes, 224; Siebenthal, 4.

gas: Lakes, 238; Siebenthal, 4.

hydrography: Newell, 4, 14; Sie- benthal, 4.

map: Clason Map Co., 6, 24, 40; Siebenthal, 4.

oil: Lakes, 238.

sand dunes: Ingersoll, 1.

sodium carbonate: Fleck, 1; Hos- ker, 1, 2.

soil survey: Holmes, J. G., 1.

water analysis: Fleck, 1. San Miguel County, copper: Spaulding,

eruptive rocks : Peale, 9.

geology: Lee, H. A., 9; Spaulding,

gold: Mg. Ind., 2; Spaulding, 1.

hydrology: E. and M. J., 32; New- ell, 12, 14.

Marshall Basin, Sheridan vein: E. and M. J., 17.

minerals: Hillebrand and Ran- some, 1.

mines and mineral production: Ameling, 4; Burchard. H. C, 4; Curry, 1; Henderson, C. W., 2, 4; Hodges, 1; Lee, H. A., 9; Rothwell, 6; Spaulding, 1.

ores: Hillebrand and Ransome, 2; Ihlseng, 1; Spaulding. 1; Rick- ard, T. A., 28.

paleontology: Hills. R. C. 1. physiography: Lee. H. A., 9;

Spaulding, 1. placer mining: E. and M. J., 32; Ihlseng, 1; Mg. Ind., 2.

Indbx

San Miguel County. — Continued. Placerville. See Placerville. rocks, analysis of: Clarke, P. W.,

5; Hlllebrand, 11. silver: Spaulding, 1. Silver Pick mine: Spaulding, 1. Telluride. See Telluride. uranium: Blanc, 1; Lee, H. A., 7;

Fleck, 4. vanadium : Fleck, 2, 4 ; Hess, 1, 4, 5 ;

Mg. World, 2; Thomas, K., 2.

San Miguel Mountains, General: End- lich, 7; Holmes, 6. geology: Cross, 23; Lakes, 67.

San Miguel Peak, monzonite: Cross and Purington, 1.

San Miguel Plateau: Peale, 12.

San Miguel quadrangle, map: Fischer,

San Miguel River, General; Peale, 8, 12; Marshall, 3. Dolores river and, map: Peale, 8. hydrography: Newell, 7. placer mining: Purington, 2.

Sapphire, production: Roth well, 5; Thom, 2.

Saucer Valley: Peale, 12.

Sawatch island: Crawford, 4.

Sawatch Range, General: Endlich, 4;

Hayden, 14. geology, economic: Lakes, 2. glaciation : Davis, W. M., 7 ; Lakes,

gold : Peale, 7. iron ore : Snedaker, 2. Pleistocene: Capps and Leffing-

well, 1. pre-Cambrian : Van Hise, 1, 2.

Sawpit, carnotite: Fleck and Haldane, gold: Hess, 4. ore deposits: Hess, 4.

Saxon Mountain, corundum from: Pratt, J. H., 1.

Scranton, coal field: Emmons, Cross,

and Eldridge, 2. Seaton Mountain, Franklin mines:

Bain, 1.

Sedaiia, coal district: Emmons, Cross, and Eldridge, 2.

copper: Mg. Rept, 40.

Sedimentation, General: Cross, 13 Hayden, 12, 19; Kneeland, 1 Loew, 2; Peale, 13; Powell, 3 Scudder, 9, 10, 14; Wads worth, 1; Walcott, 4.

Arkansas Valley: Darton, 13; Gil- bert, 5; Westgate, 1.

Boulder district: Lakes, 124.

Cambrian sediments: Walcott, 1.

Cordilleran sea: Walcott, 4.

Cretaceous time: Gilbert, 4.

Denver formation, source of sedi- ments : Emmons, Cross, and Eld- ridge, 2.

Denver formation :- Davis, W. M., 5.

Elmore quadrangle: Hills, R. C, 24.

Fourmile district, lake and stream deposits: Hoover, 3.

Laramie sea: White, 7.

lignite beds : Lesquereux, 5.

Manitou embayment: Crosby, 3.

Nepesta quadrangle: Fisher, 1.

northwestern Colorado: White, 26.

Paleozoic, early, Denver Basin: Emmons, Cross, and Eldridge, 2.

Paleozoic, peneplanatlon : Cross, Howe, and Irving, 1.

Pleistocene sediments: Emmons, Cross, and Eldridge, 2.

Pueblo quadrangle: Gilbert, 7.

Rico quadrangle: Cross and Ran- some, 1.

Rico: Rickard, T. A., 7.

Rocky Mountains: Emmons, 17.

Silverton quadrangle : Cross, Howe, and Ransome, 1.

Telluride quadrangle: Cross and Purington, 1.

terrace gravels. La Plata Moun- tains: Cross, Spencer, and Pur- ington, 1.

Sedgwick County, map: Clason Map Co., 19, 21. physiography: Walcott, 7. water supply: Hay, R., 2.

Index

Shoshone.

Paleontology.

Arapahoe: Cannon, 10; Clark, W. B., 1; Emmons, Cross, and Eld- ridge, 2; Lakes, 163; Lee, W. T., 5; White, 27.

Denver: Cannon, 3, 10; Cross, 13, 22; Clark, W. B., 1; White, 27.

Sierra Abajo, General: Endlich, 7. eruptive rocks: Peale, 9. map: Holmes, 6.

Sierra Blanca, General: Beckwith, 1; Wheeler, O. M., 6.

glaciers: Henderson, 15. physiography: Wulsten, 3. telluride ores: Pearce, 13.

Sierra Garrison: Endlich, 7; Holmes,

Sierra el Late, General: Holmes, 2. rocks, analysis of: Clarke, F. W.,

Sierra la Sal: Endlich, 7.

Slllclfied wood, production: Day, 7.

Silurian. (This should all be referred to Ordovician and Cambrian.)

BtratigrapMc, General: Cope, 23; Elndlich, 1, 3, 4,

5; Hayden, 14, 19; Hollister, 1;

Lakes, 5, 10, 143; Peale, 5, 7, 8;

Schiel, 1; Stevenson, 3. Aspen: Henrich, 2; Newberry, 16;

Spurr, 1. Canon City: Am. Geol., 1; Cope,

71, 72; Walcott, 3, 5. eastern slope: Hayden, 24. Elk Range: Holmes, 1. iron ore: Snedaker, 2. Leadville: Emmons, 2, 21. lower or Ordovician, Alma district:

Patton, 10. lower: Hayden, 19. northwestern Colorado: White, 4. ore in: Lakes, 135; Rickard, T. A.,

Sangre de Cristo Range: van Diest,

E. C. and P. H., 1. upper, San Juan County: Com-

stock, 1, 7; Endlich, 3.

Silurian. — Continued.

Paleontology.

General: Clarke, J. M., 1; Endlich, 1, 5; Girty, 2; Hayden, 14; Marsh, 35; Stevenson, 3.

Brachiopoda: Schuchert, 1.

Bryozoa: Nickles and Bassler, 1.

Canon City: Am. Geol., 1; Em- mons, 16, 20; Walcott, 3, 3a, 5.

Front Range: Emmons, 9.

lower: Hayden, 19; Am. Geol., 1.

vertebrate life: Clark, W. B., lb; Walcott, 3a, 5.

Silver, General: Berthoud, 4; Collins, G. E., 9; Comstock, 7; ETmmons, 7, 20; Endlich, 1, 2, 5; Farish, 3; Fossett, 1; Frazer, 1; Hayden, 6; Lakes, 5, 22, 143, 205, 219; - gren, 1; Marshall, 3; Mg. Rev., 3; Nat. Conservation Com., 1; Pearce, R., 15 ; Stevens, R. P., 1 ; Stevenson, 3; Wheeler, G. M., 1; Wilson, J. S., 1.

Aspen district: Henrich, 2; Matte- son, 1; Morse, 1; Newberry, 16.

Blackhawk smelters: Egleston, 1.

Boulder County: E. and M. J., 5; Jennings, 1.

Boulder County, Caribou mine : Mg. and Sci. Press, 5.

Breckenridge : Ransome, 5.

calaverite: Hillebrand, 10.

Cashin mine: Emmons, W. H., 3.

Chaffee County: E. and M. J., 15. Clear Creek County: Lawrence, B. B., 2; Vinton, 2.

Creede: Lakes, 16.

Crested Butte: Warren, E. R., 2.

Cripple Creek : Cross and Penrose, 1; Rickard, T. A., 14.

Custer County: Emmons, 23.

Durango quadrangle: Emmons, W. H., 1.

Georgetown: Spurr and Garrey, 1; Spurr, Garrey, and Ball, 1.

Gilpin County: Collins, G. E., 1; Rickard, F., 1.

gold minerals, and: Pearce, R., 12.

Goldhill: Eilers, 3.

Index

Silver. — Continued.

Gunnison County: Frazer, 2; Lakes, 32.

Hahns Peak: Draper, 1; George and Crawford, 1.

Hall Valley: Jernegan, 2.

history of industry: Williams, A.,

Idaho Springs: Spurr and Garrey, 2; Underhill, 2.

Jamestown: Parish, 1.

Lake City: Irving, 3; Irving and Bancroft, 1.

Lake Fork : Woolsey, 2.

La Plata Mountains: Cross, Spen- cer, and Purington, 1; Freeland,

£1. C, 1.

La Sal Mountains: Lakes, 67.

Leadville: Blow, 1; Emmons, 2, 9, 11; Emmons and Irving, 1; Free- land, F. T., 1; Matteson, 1; Rolker, 2; Shedd, 1; Tonge, 8; Warwick, la.

mining: Am. Jour. Mg., 2; Hague, 1; Van Wagener, 2.

mining and milling: Hubbard, G. D., 1.

minerals: Penfield, 8.

Montezuma: Ritter, 8.

Monarch-Garfleld: Crawford, 3.

Monarch-Tomichi district: Craw- ford, 4.

Ophir: Sweetser, 3.

ores, genesis of: Matteson, W. G., 2, 3.

Ouray, Camp Bird mine: Puring- ton, 3, 4.

Ouray : Cross, Howe and Irving, 1 ; Endlich, 9; Irving, 2; Koenig. 3; Ransome, 3.

Paradox Valley: Lakes, 67.

Park Range: Hayden, 14.

Pitkin: Mg. Rept. 11.

production 1869-1874: Raymond, 1, 4, 5, 7, 9, 10—1872-1876: E. and M. J., 1, 2—1874: Egleston, 1— 1872-1877: Fossett. 2—1881-1883: Burchard, H. G., 2, 3, 4—1885, 1887, 1889-1893, 1897-1905: Day. 1, 3, 5, 6, 7, 8, 10. 11, 12. 13, 14,

8 1 1 ve r. — Continued.

15, 16. 18—1885: E. and M. J., 10; Kimball, 1,2— 1887: Mg. Ind., 1; Munson, 1 — 1888: Munson, 2 —1889: Smith, M. E., 1—1889- 1890: Emmons, 19; Smith, M. E., 2—1892: Roth well, 1; Williams, A., 2—1892-1899: Rothwell, 1, 2, 3, 4, 5, 6, 7, 8—1870-1896: Mg. Ind. and Rev., 9—1896: Rickard, T. A., 6 — 199: Hodgson, 1— 1900: Hodges, 1; Ores and Metals, 3; Struthers, 1—1901: Hodges, 2; Lee, H. A., 8; Smith, M. E., 3; Struthers, 1—1902: Downer, F. M., 1, 2; Mines and Mining, 2; Ores and Metals, 6; Struthers, 3—1903: Eckel, 2; E. and M. J., 38; Mg. Rept., 34— 1904: Judd,l; Mines and Mining, 3; Ores and Metals, 8; Puckett, 1—1905: Day, 18; Ores and Metals, 9—1906: Ingalls, 5; Thom, 1—1907: Dalzell, 2; In- galls, 6; Thom, 2—1908: Hen- derson, C. W., 1; Ingalls, 7; Llndgren and McCaskey, 1 — 1909: Ingalls, 8—1910: Dalzell, 3; Fay, 1; Henderson, C. W., 4; Van Wagener, T., 4; McCaskey, 1; Warwick, 4—1911: Breen, L. A., 1; Collins, 11; Henderson, C. W., 5 ; Of , 1 ; Parker. E. W., 7— 1912: Henahen, 1; Tonge, 14.

Red Mountain: Kedzle, 1; Lakes, 60, 91 ; Schwarz, 1 ; Weston, 3.

Rico quadrangle: Cross and Ran- some, 1; Lakes. 44; Ransome, 2; Rickard, T. A., 7.

Rosita: Clark, R. N., 2.

Roslta and Sliver Cliff: Emmons. 24; Lakes, 55; Lee, H. A., 9.

Sangre de Crlsto Range: van Dlest, E. C. and P. H., 1.

San Juan County: Comstock, 1; Endlich, 3; Hartman, 2; Ihlseng, 1; Lakes, 40; Weston, 1.

San Miguel: Spauldlng, 1.

Sliver Cliff, gold, and: Lakes, 53.

Index

81 1 vcp, — Continued.

Silverton: Cross, Howe, and Ran-

some, 1. South Park: Lakes, 115. Summit County : Patton, 7. Telluride district: Cross and Pur-

ington, 1; Porter, 1; Purington,

2; Winslow, 2. telluride ore, Silverton, Bear

Creek: Emmons, W. H., 2;

Needle Mountains : Cross, Howe,

Irving, and Emmons, 1. Tenmile district: Cross, Howe,

Irving, and Emmons, 1 ; Emmons,

Silver Cliff, General: Lakes, 53; Lind- gren, 1; Rath, 1.

andesite, analysis: Clarke, F. W.,

Bassick mine: Grabill, 1.

charcoal at depth in mine: Charl- ton, 1.

geology, dynamic: Emmons, 29; Grabill, 1; Jenney, 1; Mg. and Sci. Press, 12.

geology : Cross, 27 ; Vinton, 1 ; Wal- lace, 1.

gold: Lakes, 53.

minerals, analysis: Clarke, F. W., 6; Eakins and Chatard, 1.

mines: Burchard, H. C, 2; Em- mons, 24; Tolman, 1.

ore deposits: Emmons, 12; Keck,

peridotite: Clarke, F. W., 9.

ptilolite: Cross, 1.

psilomelane, analysis: Clarke, F. W., 9.

rocks, analysis: Clarke and Hille- brand, 1.

rocks: Cross, 12; Bayley, 1.

Rosita, and. See Rosita and Silver Cliff.

silver: Lakes, 53.

Silver Plume, geology, dynamic: Posepny, 1; Spurr, Garrey, and Ball, 1; Van Hise, 4.

granite : Bailar, 3.

map: U. S. G. S.

mills: Mg. Rept, 39.

Silver Plume. — Continued.

mines, timbering: McClelland, 1. mines: Callbreath, 1; Spurr, Gar- rey, and Ball, 1.

ore deposits: Rickard, T. A., 28.

Seven Thirty mine : Rickard, F., 3.

Silverton, General: Endlich, 3.

andesite breccia, analysis of: Clarke, F. W., 8.

andesitic rocks: Van Horn, 3; Cross, Howe, and Ransome, 1.

building stone: Cross, Howe, and Ransome, 1.

Burns latite complex : Cross, Howe, and Ransome, 1.

crystalline schists: Berg, 1.

diabase: Cross, Howe, and Ran- some, 1.

enargite: Spencer, L. J., 1.

geology, dynamic: Cross, 32; Cross, Howe, and Ransome, 1; Ransome, 3.

geology, economic: Ransome, 3.

geology and mineralogy: Com- stock, 1.

gold: Cross, Howe, and Ransome,

granites: Cross, Howe, and Ran- some, 1.

ground water: Cross, Howe, and Ransome, 1; Ransome, 3.

guitermanite and zunyite: Dana, E. S., 4; Hillebrand, 3.

iron ore: Cross, Howe, and Ran- some, 1.

kaolinite: Milch, 1.

latite: Clarke, F. W., 8.

limestone: Cross, Howe, and Ran- some, 1.

map: Clason Map Co., 1; Cross, Howe, and Ransome, 1; Ran- some, 3; U. S. G. S.

milling: Baron, 2; Pasco, J. M., 1.

minerals, analyses: Clarke, F. W.,

mining, 1905: Collins, G. E., 3; Lakes, 223; Prosser, 4.

monzonite porphyry: Clarke, F. W., 8.

Indbx

81 1 verton. — Continued.

ore deposits: Cross, Howe, and Ransome, 1; Irving, 4; Spurr, Garrey, and Ball, 1 ; Ransome, 3 ; Rickard, T. A., 28.

ore dressing: Kinney and Mc- Naughton, 1.

physiography: Cross, Howe, and Ransome, 1; Ransome, 3.

porphyries : Cross, Howe, and Ran- some, 1.

pyroxene andesite: Clarke, F. W., 8 ; Cross, Howe, and Ransome, 1.

quartz latite: Clarke, F. W., 8; Cross, Howe, and Ransome, 1.

quartz syenite porphyry: Cross, Howe, and Ransome, 1.

rhyolite: Cross, Howe, and Ran- some, 1.

rocks, analysis of: Clarke, F. W., 8.

schists: Cross, Howe, and Ran- some, 1.

silver: Cross, Howe, and Ransome,

Silver Lake mine: Lakes, 123.

tuff: Cross, Howe, and Ransome,

tungsten, hiibnerite ore, analysis: George, 3.

tungsten, htibnerite: Cross, Howe, and Ransome, 1.

tungsten, wolframite, analysis of: George, 3.

tungsten: Ekeley, 1.

zinc: Cross, Howe, and Ransome,

zunyite and guitermanite : Dana, B. S., 4; Hillebrand, 3.

SInbad Vailey, General: Peale, 8. salt: Gannett, H., 4. vanadium: Lindgren, 9.

Slate, General: Coons, 1; Lakes, 51; Merrill, 4. production: Burchard, E. F., 4; Day, 16.

Slate Creek, coal, analysis: Eakins, 6.

Smaltlte: lies, 2.

Smelter Creek, stream measurement: Lamb and party, 1.

Smelting, General: Austin, L*. S., 1; Guiterman, 1, 2 ; Ores and Metals, 2; Johnson, 3.

Argo: Lakes, 132; Pearce, H. V., 1.

Blackhawk: Egleston, 1; Rickard,

T. A., 6. Colorado- American Zinc-Liead Co.:

Rothwell, 1.

Dudley : Peters, 1.

gold and silver ores: Tonge, 5.

Green: Rickard, T. A., 6.

in 1871 : Raymond, 5 — 1874, Black- hawk: Egleston, 1—1882-1883: Burchard, H. C, 3, 4 — 1887: E. and M. J., 12—1892: Rothwell, 1 —1905: Day, 18—1909: Argall, P.. 14.

history of. In state: Bain, 7; Pearce, R., 4.

Leadville and Robinson: Doolittle, 1 ; Tonge, 8.

matte and ore, Leadville and Rob- inson: Doolittle and Jarvis, 1; Struthers, 3.

Ohio-Colorado, Salida: Mg. Kept,

pyrite: Argall, P., 4; Carpenter, F. R., 1.

rates: Mg. Mag., 2.

Salida: Mg. Rept, 29; Ritter, 1.

San Juan, Durango: Rickard, T. A., 6.

sinter roasting: Weeks and Laws,

slag treatment, Argo: Pearce, H. v., 1.

sulpho-tellurides: Argall, 18.

zinc ore dressing: Parmelee, 6; Prosser, 5.

Smoky Hill, chalk: Conrad, 1.

Snake River district, mines: Eilers, 1; Hague, 1. mining, 1867: Hollister, 1.

Soda, General: Bailar, 3.

Denver, near: Wilson, 1.

San Luis Valley: Siebenthal, 4.

sulphate of: Smith, J. A., 1.

Soda Creek, hot springs: Spurr and Garrey, 2.

Index

Soda Lake, soda: Hayden, 12.

Soda Springs, hot: Spurr and Garrey,

Sodium carbonate, San Luis Valley: Fleck, 1. General: Elliott, R. S., 1; Thomas, C, 2.

Soils. It was found possible to include only a few references to soils of the state. For information re- garding soils consult —

1. Reports of the Field Opera* tions of the Division of Soils by the U. S. Dept. of Agric, Nos. 4, 5, 6, 7, and 12.

2. Reports of the Experiment Station, State Agricultural College, Ft. Collins.

Soils, General: Elliott, R. S., 1;

Thomas, C, 2. Arid lands: White, 7. Arkansas Valley, lower: Lapham

and party, 1. Cache la Poudre Valley: Means,

T. H., 1. cultivable and cultivated area:

Newell, 14. Denver Basin, loess: Emmons,

Cross, and Eldridge, 2. Grand Junction district: Holmes

and Rice, 1. Greeley: Holmes and Neill, 1. Nepesta quadrangle: Fisher, 1. nitrates in: Headden, 15. San Luis Valley: Holmes, J. G., 1.

Somerset coal field: Lee, W. T., 10.

Sopris, coal mines: Hills, R. C, 25; White and Perry, 1. coal washing plant: E. and M. J., 22; Hosea, 1.

Sopris Peak geology: Holmes, 1. South Boulder Creek, Bear Canyon, paleontology : Fenneman, 5 ; White, 6b. hydrology: Lamb and party, 1;

Newell, 7, 12, 16. ore deposits : Rickard, T. A., 28. placer mining: Mg. Rept, 2. pre-Cambrian : Van Hise, 1.

South-central Colorado, physiography: Bergland, 1.

Southeastern Colorado, canyons: Lee, W. T., 7.

geology, dynamic: Endlich, 4; Gil- bert, 6; Stevenson, 8.

geology, economic: Endlich, 4.

geology, topographic: Rhoda, 3.

iron ore: Endlich, 4. laccolites: Gilbert, 6. map: Hills, R. T., 1. physiography: Lee, W. T., 7; Wil- son, A. D., 3.

Southern Colorado, andesite: Conk- ling, 2. basalt: Conkling, 2. coal mines: Day, 4; Stevenson, 6. diorite: Conkling, 2. dolerite: Conkling, 2. geology : Stevenson, 9. gold deposits: Rickard, 9. granite: Conkling, 2. Laramie group: Stevenson, 6. map: Newberry, 3. Mesozoic rocks: Stevenson, 12. prehistoric ruins: Gannett, 8. trachyte: Conkling, 2.

South Fork, hydrography: Schuyler, 1.

South Park, General: Bechler, 1; Cope,

21 ; Hayden, 6 ; Lakes, 10 ; Peale,

Alma, placer deposits: Lakes, 22. ancient lake : Stevenson, 3. coal: Hills, R. C, 22; Lakes, 115,

163, 165; Mallett, 1; Stevenson,

1; Washburne, 4. coal field, map : Washburne, 4. geology: Hayden, 14; Lakes, 115. gold: Lakes, 115. Laramie: Cross, 18. lead: Lakes, 115. map: Bechler, 1; Peale, 6. mines: Peale, 6. oil: Lakes, 115. ore deposits: Lakes, 243. placer beds: Lakes, 22, 110. paleontology: Cope, 21, 40. silver: Lakes, 115. sulphur springs : Stevenson, 3.

Index

South Platte River, General: Bechler, 1; Thomas, C, 2. coal field: Hayden, 14, 19; Hills, R. C, 22; Lakes, 69; Storrs, 1.

Fox Hills: Stevenson, 5.

hydrography : Lamb, Freeman, and Henshaw, 1 ; Lamb and party, 1 ; Newell, 7, 12, 16.

paleontology, fossils described : White, 17.

South Platte Valley, and Cache la Poudre, map: Clason Map Co.,

and Denver, map : Clason Map Co.,

South River, erosion: Endlich, 8.

Southweetern Colorado, ancient ruins:

Jackson, 1, 2. coal: Lakes, 8. geology, dynamic: Comstock, 5, 6,

maps: Comstock, 7; Hayden, 31;

St. John, 1. oil: Lakes, 107. physiography: Wilson et al., 1.

Red Beds: S , C, 1.

veins: Comstock, 6.

Spanish Peaks, General: Beckwith, 1;

Endlich, 4, 7; Hayden, 6; Jewett,

augite granite porphyry: Daly, 1;

Hills, R. C, 26. basalt: Hills, R. C, 25. coal: Hills, R. C, 9, 25; Lakes, 108,

coke making: Hills, R. C, 25. erosion: Endlich, 8. eruptions: Hills, R. C, 9, 14. eruptive rocks: Peale, 9. fulgurite: Hills, R. C, 16. geology, dynamic: Hills, R. C, 9,

10, 14, 16, 20, 25; Lakes, 108, 143,

156; Savage, 1. geology : Savage, 1. granite felsophyre: Hills, R. C, 25. granite porphyry: Hills, R. C, 25. intrusive rocks: Hills, 20. lamprophyre: Hills, R. C, 25. limestone: Hills, R. C, 25.

Spanish Peaks. — Continued.

map: Endlich, 4; Hills, R. C, 25; U. S. G. S.

minerals : Schaller, 1. petroleum: Hills, R. C, 9. physiography: Hills, R. C, 25. sandstone: Hills, R. C, 25.

Spiders: McCook, 1.

Splegeieiten, production 1903-1904: Day, 16, 17—1907: Thom, 2.

Split Mountain Canyon: White, 4.

Sprague Glacier: Henderson, J., 15.

Springfield quadrangle, map: U. S. 6. S.

Starkvilie, coal mine explosion: Mines and Minerals, 9.

Steamboat Springs, General: Draper, 2;

Lakes, 23. building stone : Fleck and Haldane,

geology, dynamic: Lee, H. A., 9. geology: Witter, 1. mineral springs: Lakes, 23, 125;

Lee, H. A., 9; Lowther and

Knowles, 1. onyx: Bailar, 3; Lee, H. A., 9. water analysis: Lakes, 23; Lee, H.

A., 9.

Sterling, underground water: Slichter and Wolff, 1. water, analysis of: Slichter and Wolff, 1.

Stonewall district, coal: Richardson, 2.

Storm ridge, geology: Cross, 23.

Stream measurements, General: Hoyt, 1 ; Newell, 2, 4, 8, 9, 11, 13, 15. 17,

Animas: Newell, 12, 14.

Arkansas: Emmons, Cross, and Eldridge, 2; Freeman and Bol- ster, 2: Freeman and Mathers, 1; Hinderlider and Hoyt, 1; Newell, 2, 4, 7, 12, 14, 16.

Bear Creek: Newell, 12, 16.

Big Sandy : Freeman and Mathers,

Big Springs Creek: Freeman and Mathers, 1.

Index

Stream meaturementt. — Continued. Big Thompson: Lamb, Freeman, and Henshaw, 1; Lamb and party, 1; Newell, 12, 16.

Blue: Freeman and Bolster, 1, 4.

Boulder: Lamb, Freeman, and Henshaw, 1; Newell, 12, 16.

Cache la Poudre: Emmons, Cross, and ETldridge, 2; Lamb, Free- man, and Henshaw, 1 ; Lamb and party, 1; Newell, 2, 7, 12.

Chalk Creek: Freeman and Ma- thers, 1.

Clear Creek: Freeman and Ma- thers, 1, 2; Lamb and party, 1; Newell, 16.

Colorado River, above Yuma: Hin- derlider, Swendson, and Chand- ler, 1; Hinderlider and Swend- son, 1; Meeker and Reed, 1.

Conejos Creek: Freeman and Ma- thers, 2.

Cottonwood Creek: Freeman and Mather9, 2.

Crystal Creek: Freeman and Bol- ster, 1, 4.

Culebra Creek: Freeman and Ma- thers, 2.

Dolores: Newell, 14.

Duck Lake Creek: Lamp and party, 1.

Eagle: Freeman and Bolster, 1, 4.

Florida: Newell, 14.

Fourmile Creek : Freeman and Ma- thers, 1.

Frazer: Freeman and Bolster, 1, 4.

Geneva Creek: Lamb and party, 1.

Grand: Freeman and Bolster, 1; Newell, 12, 14, 16.

Gunnison: Freeman and Bolster, 1, 4; Newell, 12, 14.

Laramie River: Lamb and party, 1.

Mancos: Newell, 14.

Mississippi drainage: Hinderlider, Giles, and Hoyt, 1; Meeker and Giles, 1.

Missouri River drainage: Babb, Hinderlider, and Hoyt, 1; Fol- lansbee, Meeker, and Stewart, 1.

Stream meaeuremente. — Continued.

northwestern Colorado, low water: Newell, 16.

Oil Creek: Freeman and Mathers,

Piedra: Newell, 12.

Purgatory: Freeman and Mathers, 1; Newell, 12.

resources, and: Fellows, 1.

Rio Grande: Freeman and Math- ers, 2; Newell, 12, 14; Taylor and Hoyt, 1, 2; Taylor and Lamb, 1; Newell, 16.

Roaring Fork: Freeman and Bolster, 1, 4.

San Juan: Newell, 12, 14.

San Luis Creek: Freeman and Mathers, 2.

San Miguel: Newell, 12, 14.

Scott Gomer Creek: Lamb and party, 1.

Smelter Creek: Lamb and party, I.

South Boulder: Lamb and party, 1; Newell, 12, 16.

South Platte: Inib and party, 1; Newell, 12, 16.

St. Vrain: Lamb, Freeman, and Henshaw, 1; Lamb and party, 1; Newell, 12, 16.

Tarry all Creek: Imb and party,

Uncompahgre : Newell, 12; Free- man and Bolster, 1, 4.

White River: Gale, 5.

Strontium, production 1901: Day, 14.

Sub-Carbon if eroue, Paleontology: Hay, O. P.. la; Peale, 8; White, 22.

Sugarloaf district, geology: Emmons, 7. Lake Fork, hydrology: Hosea, 7.

Sugarloaf Mountain, eruptive rocks: Emmons, 7.

Sulphur. General: Baldacci, 1.

Mineral County: La r sen and

Hunter, 1; Phalen, 3. production 1905: Day, 18—1906, 1907: Ingalls, 5, 6; Thom, 1, 2.

Sulphuric acid, production: Parker, E. W., 7; Phalen, 3.

Sulphur Springs, fossils from de- scribed: Cross, 18, 19.

Indbx

Summit County, alabandite and pyrite: Smith, W. B., 2.

Bell mine, Glacier Mountain, min- erals: Van Horn, 1.

bismuth, Montezuma district: Ingalls, 8.

Breckenridge. See Breckenridge. enargite: Pirsson, 1.

Farncomb Hill, gold: Hausmann,

geology: Emmons, 7; Fosset, 1; Hills, R. C, 3; Lee, H. A., 9; Merrick, 1; Mg. Ind., 5; Patton,

Glacier Mountain, Bell mine, min- erals: Van Horn, 1.

gold: Hausmann, 1; Mg. Rept., 5; Patton, 7 ; Sharwood, W. J., 1.

iron ore: Patton, 7.

minerals, analyses: Clarke, F. W.,

mining and mineral production: Burchard, H. C, 1, 2, 3, 4; Call- breath, 3; Hollister, 1; Hender- son, C. W., 2, 4; Lakes, 5; Lee, H. A., 9; Mg. Rept., 18, 24; Mg. Rev., 1; Munson, 1, 2; Patton, 7; Raymond, 1, 4, 5, 7, 9, 10; Roth well, 6.

Montezuma district, geology, map: Patton, 7.

ore deposits, Bancroft, G. J., 6; Hills, R. C., 3; Lakes, 143, 195; Lee, H. A., 9; Merrick, 1; Mg. Ind., 5; Patton, 7.

physiography: Lakes, 195; Patton,

placer mining: Brown, T. A., 1; Lakes, 121, 133; Mg. Rept., 5.

pyrite and alabandite: Smith, W. B., 2.

silver: Patton, 7.

Summftville, ore deposits: Hills, 3; Raymond, 10; Rickard, T. A., 28.

Sunlight, coal: Shubart, B., 1.

Sunshine, geology: Emmons, 7; End- lich, 5.

Superior, coal: Emmons, Cross, and Eldrldge, 2.

Swan River, placer mines': E>. and M.

Tantalum, Canon City: Hess, 1, 3. production 1906: Thorn, 1.

Tar, production 1908: Parker, B. W., 3.

Tarryall reservoir site: Schuyler, 1.

Taylor Peak, iron deposits, map: Harder, 2; Hills, 20.

Teller County, amazonstone and moon- stone from: Sterrett, 2.

Cripple Creek. See Cripple Creek.

geology, dynamic: Rickard, T. A.,

mineral production: Henderson, C. W., 4.

molybdenum: Sebben, 1.

moonstone and amazonstone: Ster- rett, 2.

uranium: Lee, H. A., 7. Tel lu ride. General: van Diest, 5.

andeslte: Cross and Purlngton, 1. coal, Dakota formation: Purington,

coal : Cross and Purington, 1 ; Pur- ington, 2.

copper, native: Purington, 2.

gabbro, gabbro porphyry, analysis: Clarke, F. W., 8.

geology, dynamic: Cross, 26; Cross and Purington, 1; Lay, 1; Pearce, 5; Purington, 2.

geology, fissure and vein system: Cross and Purington, 1.

glaciation: Hole, A. D., 2.

gold: Cross and Purington, 1; Porter, 1; Purington, 2; Win- slow, 2.

hydrology: Purington, 2.

igneous rocks: Cross, 26.

lamprophyre: Clarke, F. W., 8.

Liberty Bell mine, analysis of ore: Winslow, 2.

Liberty Bell mine, gold: Winslow, 2; Mg. and Sci. Press, 14.

Liberty Bell mine, milling: Bpsqui, 1, 2; Of, 1.

Liberty Bell mine, minerals: Wins- low, 2.

Indbx

Tellurlde. — Continued.

Liberty Bell Mine: Bosqui, 2;

Henahen, 1; Mines and Mining,

1; Winslow, 2. map: Clason Map Co.; Cross and

Purington, 1; Purington, 2; U. S.

G. S. mica: Purington, 2. mills: Mg. Rept., 41; Purington, 2. minerals: Cross and Purington, 1.

mining: Collins, G. E., 3; Cross and Purington, 1; Ingalls, 3; Mg. Rept., 10; Purington, 2.

ore deposits: Cross and Purington, 1; Lakes, 143; Pearce, 5; Pur- ington, 1, 2, 7; Spurr, Garrey, and Ball, 1.

orthoclase: Purington, 2.

placer mining: Cross and Puring- ton, 1.

platinum and allied metals: Lind- gren, 10.

quartz: Purington, 2.

quartz monzonite: Clarke, F. W., 8, 9.

rhyolite: Cross and Purington, 1.

rocks, analysis: Clarke,, F. W., 8; Cross, 26; Cross and Purington,

San Miguel formation: Cross, 30.

silver: Cross and Purington, 1; Porter, 1; Purington, 2; Wins- low, 2.

Smuggler-Union mine, analysis of ore: Porter, 1.

Smuggler - Union mine, milling: Adams, W. E., 1.

Smuggler-Union mine: Nye and Clifford, 1; Met. and Chem. Eng.. 1; Porter, 1.

Tom Boy mine: Roth well, 5.

vitrophyre, black, analysis: Clarke, F. W., 8; Cross and Purington, 1.

vanadium: Zalinski, 1.

Telluride ores. General: Lakes, 56, 61, 78, 79, 174; Pearce, 7, 11; Silli- man, B., 1. Gilpin County: Rickard, T. A., 16. Gilpin County: Rickard, F., 1.

Telluride oree. — Continued.

La Plata Mountains: Austin, 2;

Freeland, H. C, 1. production 1886: Day, 2—1893,

1897: Roth well, 2, 6.

Tenmile district, allanite: Iddings and

Cross, 1. diorite porphyries: Emmons, 27. geology: Cross, 23; Emmons, 27;

Lakes, 228. Kokoma: Tro, 1. lead: Emmons, 27. map: Emmons, 27; U. S. G. S. minerals, analysis of: Clarke, F.

W., 6; Clarke and Hillebrand, 1. mining: HoUister, 1; Emmons, 27. molybdenum: Hess, 5. ores: Emmons, 27; Rickard, T. A.,

28; Spurr, Garrey, and Ball, 1. physiography: Emmons, 27. rhyolite: Emmons, 27. silver: Emmons, 27. zinc: Ehnmons 27.

Teocalli Mountain: Hayden, 30. Tepee Buttee, geology, dynamic: Gil- bert and Gulliver, 1.

map: Gilbert and Gulliver, 1.

physiography: Gilbert and Gulli- ver, 1. Tercio, coal mines: Hosea, 5; Merriam,

1 ; Plumb, 1 ; Richardson, 2. Tertiary. Stratigraphic,

General: Cope, 18, 56, 60; Elliott E. T., 1; Emmons, 20; Endlich 1, 5; Gale, 7; Hallowell, 2; Hay den, 5, 6, 12, 14, 16, 18, 22 Holmes, 2; Lakes, 5, 6, 10, 143 Ie, W. T., 10; Marvlne, 1 Matthew, 1 ; Newberry, 5 ; Peale 5, 7, 12; Stevenson, 7; Stone, 2 St. John, 1; Ward, L. F., 1 White, 4, 9, 26; Williams, S. G.. 1 ; Willis, 1.

Amyzon Beds: Cope, 43.

Apishapa: Stose, 1.

coal beds. Canon City: Clark, R. N., 1.

coal measures: Hewett, 1; Hodge, 1; Macfarlane, 1.

Index

Tertiary. — Continued.

Stratigraphic. — Continued, correlation: Dall, 1.

Creede: Emmons and Larsen, 1. Denver Basin: Eldridge, 2. Denver formation: Cross, 13;

Davis, W. M., 5. eastern Colorado: Hay, R., 1, 2;

Hayden, 20, 24. eruptives, Creede: Emmons and

Larsen, 1. eruptives, San Juan: Read, 4. eruptives, southeastern Colorado:

Stevenson, 8. Florissant: Henderson. J., 6 ;

Scudder, 10, 15, 18, 27. fresh water formations: Chamber-

lin, 1; Marsh, 47. Grand Canyon: Dutton, 3. Grand River district: Peale, 12. Green River: Scudder, 1, 2. Huerfano River basin: Hills, R. C,

10, 13. iron ore: Berthoud, 4. lake basin, Florissant: Henderson,

J., 6; Scudder, 10, 15. Lake Beds. See Lake Beds, lakes: King, 1. Laramie, age of: Bannister, 1;

White, 25. lignite deposits: Hayden, 4; Is-

quereux, 2. lower: Hayden, 19. map: King, 1; Willis, 2. northeastern Colorado: Matthew,

North Park: Hague and Emmons,

northwestern Colorado: Gale, 3;

White. 4. ore in: Lakes, 135; Riokard, T. A..

Palmer Lake: Cannon, 9. Post-Laramie. See Post-Laramie. Rabbitt Ears district: Grout, Wor- cester, and Henderson, 1. Rocky Mountain region: Davis,

W. M., 5a. San Juan County: Comstock, 1;

Lakes, 181.

Tertiary. — Continued. Stratigraphic. — Continued.

shales, San Miguel: Spaulding, 1. silver, uranium in: Berthoud, 4. southeastern division: Endlich, 5. Trinidad: Richardson, 2. White River: Hollister, 1. Yampa: Fenneman and Gale, 2.

Paleontology. General: Adams, 2; Allen, 2, 5, 7; Cockerell, 3, 7b, 12, 23, 35, 50, 60; Cope, 15, 21, 40; Cross, 13, 18, 19. 24, 38; Hayden, 19, 23, 25; Hills, 10, 13, 15, 21, 25, 28; Hollister, 1; Lesquereux, 4, 13, 14; Marsh, 21, 35; Matthew, 1, 3; Peale, 5, 7; Scudder, 7, 8, 9, 15, 18, 20; White,

3, 8, 9, 15, 16, 18, 21, 22. Aphidae: Scudder, 38. articulate from: Scudder, 20. bibliography and catalogue of

genera and species: Nickles and Bassler, 1.

cemetery: Ickwood, 1.

Coleoptera: Scudder, 4.

Dinosauria, Denver Beds: Cannon.

Eocene. See Eocene.

fishes. South Park: Cope, 21.

Florissant: Scudder, 37, 41; Wick- ham, 1, 2, 3.

Front Range: Lesquereux, 13.

Huerfano: Hills, 10.

insecta: Brues, 1, 2, 3, 4, 5, 6; Cock- erell, 2, 4, 5, 6, 7, 7a, 10, 11, 13,

14, 15, 16, 17, 18, 19, 19a, 20a, 20b, 20c, 20d, 20, 21, 22, 24, 26, 27, 28,

29, 30, 31, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 47, 48a, 48, 49, 51, 52, 53, 55, 60, 63, 64, 65, 66; Rohwer, 1, 2, 3, 4, 5, 6, 7; Scudder, 1. 2, 3,

4, 5, 6, 7, 8. 9, 10, 11, 12, 13, 14,

15, 16, 19, 20, 24, 25, 26, 27, 28, 29,

30, 31, 32, 3, 34, 35, 36, 37, 38, 39. 40, 41 ; Wickham, 1, 2, 3, 4.

invertebrata (see also Insecta and General) Meek, 4a, 7; White, C. A., la, 1, 2, 8. 4, 8. 9, 11, 12. 15,

16, 17, 18, 21, 22, 25.

Indbx

Tertiary, — Continued. Paleontology, — Continued.

invertebrates: Gabb, 1.

lake basin: Scudder, 15.

Loup Fork: Cope, 54; Dall and Harris, 1; W. J. L.. 1.

mammals: Marsh, 23, 41; Matthew, 2, 6; Osbom, 4; W. J. L., 1.

Megacerops: Leidy, 2.

Miocene. See Miocene.

northwestern Colorado: Gale, 3, 8.

Oligocene. See Oligocene.

Physopoda: Scudder, 3.

plants: Britton and Hollick, 1; Cockerell, 1, 6, 8, 17, 25, 32, 34, 44, 46, 54, 56, 68, 59, 61, 62; Cope, 34; Cross, 13; Kirchner, 1; Knowlton, 1, 2, 3, 4; Lesquereuz, 1, la, 2, 4, 8, 11, 12, 13, 14, 16, 18; Peale, 12; Scudder, 10,15; Ward, Lester F., 1, 2; White, C. A., 21.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Rhinoceridae: Cope, 48.

Roan Mountains: Scudder, 37.

Shoshone. See Shoshone.

South Park: Cope, 21.

upper: Cope, 41.

vertebrata: Cope, 6, 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 20, 21. 36, 38, 40, 41, 42, 47, 54, 56, 58, 59, 60, 61, 62, 63, 65, 66, 68, 69, 70; Leidy, 1, 2; Marsh, 1, 5. 23. 41. 43, 46, 47; Matthew, 2, 4, 5, 6; Peale, 7, 12.

vertebrate, Canon City: Hayden,

White River: Scudder, 37.

Texas Creek, rose quartz: Sterrett, 7.

Yhermai springs. See hot springs.

TImpae quadrangle, map: U. S. G. S.

Tin. General: Rolker, 3; van Diest, 13. bibliography: Collier, A. J., 1; Hess, F. L., and E., 1.

Tin Cup, ore deposits: Rickard, T. A.. placer mining: Lakes, 258.

Titaniferoue Iron ore: Chauvenet, 3, 4, 8; Hayden, 14; Jennings, 2; Put- nam, 1; Singewald, 1, 2.

Tonnichi-Monarch. See Chaffee Coun- ty, Monarch-Tomichi.

Tongue Mesa coal field: Lakes, 157; Storrs, 1.

Topaz. General: Cross, 4.

production, 1888, 1892: Day, 4, 7; Henahen, 1.

Topaz Butte, crystal beds: Smith, W. B.. 1. phenacite: Penfield, 1.

Tournnaline. General: Sterrett, 2.

production 1906-1907: Thorn, 1, 2.

Toualand. coal: Hayden, 19. Trachorheltea: Endlich, 1, 7; Peale,

7, 8. Triasaic.

Stratigraphic.

General: Endlich. 1, 5; Hayden, 6, 12, 14, 19, 22; Holmes, 2; King, 1; Lakes, 6, 10; Marvine, 1; Newberry, 3; Peale, 5, 7, 8; Stevenson, 3, 12.

Colorado Range: Hague and Em- mons, 1.

Denver Basin: Eldridge, 2.

Elk Range: Holmes, 1.

Fremont County: Williams, S. G.,

Grand River valley: , 3; Riggs and Farrington, 1.

map: Willis, 2.

northwestern Colorado: White, 4.

Perry Park: Cannon, 7.

Rabbit Ears district: Grout, Wor- cester, and Henderson, 1.

Rio Blanco County: Gale, 2.

Shinarump group: Cross, 36.

southern Colorado: Stevenson, 12.

southwestern Colorado: Hess, 4.

Telluride district: Purington, 2.

westem Colorado: Cross, 36. Paleontology.

General: Hay, O. P., 5; Hills, R. C, 1, 2; Marsh, 35; Newberry, 4; Stanton, 3; White, 15; Williston,

Carboniferous, and Shinarump group: Cross, 36.

dinosaurs: Marsh, 45.

(15)

Ind1Bx

TriaMic. — Continued. Paleontology. — Continued.

Dolores: Cross and Howe, 1;

Cross, Howe, and Irving, 1;

Cross and Purington, 1; Cross

and Ransome, 1; Cross and

Spencer, 1. Engineer Mountain: Cross, 41. insects: Scudder, 19. limestone: Clarke and Hillebrand,

Red Beds: Cross and Howe, 1. San Juan: Newberry, 4. Shinarump group: Cross, 36.

Trimble Springs, water analysis: Lee, H. A., 9.

Trinidad, General: Endlich, 4; St John, 1.

artesian wells: Lakes, 3.

Barela Mesa, coal: McLaughlin, J. E., 1.

building stone: Merrill, 2.

coal, analysis: Lakes, 3, 6.

coal: Ashley and Fisher, 1; Conk- ling, 3; Darton, 9; Englemann, 1; Haydon, 6; Hills, R. C, 26; Lakes, 3, 6; Lesquereux, 2; Mc- Laughlin, J. E., 1 ; Potter, W. B., 1; Richardson, 2; Stevenson, 8; Stone, 8; Whiteside, 2.

coke: Eilers, 4; Englemann, 2; Lakes, 3; Potter, W. B., 1; Weeks, J. D., 3.

geology: Conkllng, 3; Lakes, 6; Stevenson, 8.

graphite: Lakes, 3.

map: Clason Map Co.; Endlich, 4.

physiography: Lakes, 6. Tungsten, General; Ackerraan, E., 1; Ekeley, 1; Fleck, 4; Frenzel, A. B., 1; George, 3; Henahen, 1; Hess, 5; Hills, V. G., 2; Lakes, 143; Lee, H. A., 4; Ohly, 8; Ran- some, 3.

Boulder County: Fleck, 2; George, 4; Greenawalt, 2, 3; Hess, 1, 2, 3; Mg. Rept., 38; Mg. World, 1; Tovote, 2; Walker, 1; Wood, 1.

Chaffee County: Hess, 3.

metallurgy of: Ohly, 1.

T u ng at e n . — Continued.

milling, Boulder County: Carl, 1; George, 3; Paddock, 1; Parma- lee, 3, 4.

prices, production, mines, Boulder Coimty: George, 3; Llndgren, 6.

production, 1898: Rothwell, 8 — 1899-1905: Day, 12, 13, 14, 15, 16, ' 17, 18—1899, Ohly, 1— -1900: Ores and Metals, 3; Stnithers, 1 — 1901: Lee, H. A., 8; Struthers, 2—1904: Judd, 1—1905: Ingalls, 4; Ores and Metals. 9 — 1906: Ingalls, 5; Thom, 1—1907: In- galls, 6; Thomas, K., 1; Thom, 2—1908: Collins, G. B., 8; George, 2; Ingalls, 7 — 1909: Col- lins, G. E., 9; Hess, 2; Ingalls, 8—1910: Dalzell, 3; Fay. 1; Hess, 3; Warwick, 4 — 1911: Mg. and Eng. World, 9; Of., 1; Parker, E. W., 7.

San Juan: Cooper, C. A., 1; George, 4; Irving, 1; Mines and Mining, 4; Prosser, 1. Turkey Creek, coal: Stone, 8.

columbite: Headden, 1. Turquoise, La Jara, Conejos County: Sterrett, 3, 7. production, 1888, 1892-1893, 1901:

Day, 4, 7, 8, 14. . Saguache County: Jones, F. A., 1. Twin Butte, laccolites: Gilbert, 6. Twin Lakes, General: Hayden, 14, 30. glaciated area: Hayden, 28; West- gate, 1. gold, lode and placer: Guenthe-

rodt, 1. ore deposits: Rickard, T. A., 28. placer mine: Mg. Rept., 13. Twin Mountains, marble: Lakes, 221,

Two Buttea, Comanche: Darton, 11. geology, dynamic: Stanton, 3. map: U. S. G. S. minerals, analysis: Clarke, F. W.,

paleontology: Stanton, 3; Darton,

n.

prowersose: Cross, 34.

rocks, analysis: Clarke, P. W., 5.

Index

Tyndall Glacier: Henderson, J., 15.

Uinta Basin, map: Eldridge, 6.

Uinta Mountains, General: Powell, 3. chert, analysis of: King, 1. Green River, antecedent to (?): Davis, 4.

Uinta Range: Cope, 60; King, 1; White, 4. geology: White, 24, 26.

Una weep Canyon: Gannett, 4, 9; Peale, map: Peale, 8.

Uncompahgre Canyon: Cross and Howe, 1; Ransome, 3.

Uncompahgre Mountains: Endlich, 7. pre-Cambrian: Van Hlse, 2.

Uncompahgre Peak: Endlich, 3; Mar- shall, 3.

Uncompahgre Plateau: Gannett, 4, 9; Peale, 8.

Uncompahgre region, General: Wheeler, G. M., 4. gyspum: Siebenthal, 1. map: Siebenthal, 1.

Uncompahgre River, hydrology: New- ell, 12; Walcott, 13.

Uncompahgre Valley, coal: Peale, 8. map: Clason Map Co. reclamation work: Quinton, 1.

Underground waters: Apishapa quad- rangle: Stose, G. W., 1.

Arkansas Valley: Darton, 5; Gil- bert, o.

Boulder district: Fenneman, 5.

Cripple Creek district: Cross and Penrose, 1; Lindgren and Ran- some, 1, 3.

eastern Colorado: Hay, Robert, 2.

Georgetown district: Spurr, Car- rey, and Ball, 1.

Geyser mine: Emmons, 23.

Rosita-Silver Cliff district: Sirurr, Garrey, and Ball, 1.

Silverton: Cross, Howe, and Ran- some, 1.

Sterling: Slichter and Wolff, 1. Upper Blue River, mining, 1867: Hol- lister, 1.

Uranium, General: Becke, 1; Berthoud, 4; Blanc, 1; Endlich, 5; Fleck, 3; Frnzel, A. B., 1; Henning, 2; Hess, 5; Hillebrand and Ran- some, 2; Lakes, 67, 143, 165; Phillips, 1.

Chemistry, minerals, and ores: radio-activity, radium, produc- tion, etc.: Baskerville, 1; Bas- tin, 2; Boltwood, 1; Collins, 8, 9; Cumenge and Freidel, 1 ; Curran,

1, 2; Endlich, 6; Fleck, 2, 3, 4; Fleck and Haldane, 1, 2; Fisch- er, 1, 2; Gale, 2, 6; George, 4a; Gleditsch, 1; Hess, 1, 2, 3, 4, 5; Hill, 1; Hillebrand, 5, 11; Hille- brand and Ransome, 1, 2; Lakes, 67, 143, 165, 205; Lindgren. 9; Moore and Kithil, 1; Ohly, 1, 11, 12; Ohtegnot, 1; Rickard, F., 1, 6; Rutherford and Boltwood, 1; Schaaf-Regelman, 1; Strutt, 1; To vote, 1.

bibliography of Colorado uranium: George, 4a.

Boulder and Gilpin counties: Wood, 1.

Gilpin County, Central City: Pearce, 10.

Gilpin Coimty: Hess, 1; Rickard, F., 1; Tovote, 1.

Montrose County: Mines and Min- ing, 1; Ohly, 1.

production 1893, 1897: Rothwell,

2, 6—1899, 1901-1905: Day, 12, 14, 15, 16, 17, 18—1906: Thom, 1—1907: Ingalls, 6; Thom, 2— 1908: Collins, G. E., 8—1909: Hess, 2—1911: Of, 1; Parker, E. W., 7 — by counties: Lee, H. A.,

southeastern Utah: Boutwell, 1. western Colorado: Hillebrand and Ransome, 1 ; W , C. H., 3.

Ute Indian War, map: Rand, McNally and Co., 3.

Ute Pass, fault and sandstone dikes: Crosby, 2. map: Crosby, 1.

Index

Vanadium, General: Bcnicke, 1; Carl, 1, 3; E. and M. J., 46, 47; Fischer, S., 1, 2; Fleck, 3, 4; Hess, 1, 5; Hillebrand and Ran- some, 2; Lakes, 153; Lindgren. 9; Mg. World, 8, 9.

Chemistry, ores, minerals, metal- lurgy, mining, etc.: Baskerville, 1; Berthoud, 4; Collins, 8, 9; Cross and Purington, 1; Curran, 1; Endlich, 6; Fleck, 2; Fleck and Haldane, 1, 2; Gale, 2, 6; George, 4a; Henning, 2; Hess, 1, 2, 3, 4, 5; Hillebrand, 5, 11; Hillebrand and Ransome, 1, 2; Lakes, 67, 143,165,205; Lindgren, 9; Moore and Kithil, 1; Ohly, 1, 11, 12; Pearce, 10; Philips, 1; Schaaf- Regelman, 1; Thomas, K., 2; Zalinsky, 1.

bibliography of Colorado vana- dium: George, 4a.

Boulder County: Wood, 1, 2.

Greenhorn Mountains: B. and M. J., 44.

Montrose County: Mines and Min- ing, 1 ; Ohly, 1.

Paradox Valley: Salt Lake Mg. Rev., 2.

Placerville: Hess, 4.

production 1900-1905: Day, 13, 14, 15, 16, 17, 18—1907: Ingalls, 6; Thorn, 2—1-909: Collins, G. E., 9; Hess, 2—1910: Dalzell, 4; Fay, 1; Hess, 3; Warwick, 4 — 1911: Of, 1; Parker, E. W., 7.

Rio Blanco County: Fleck and Haldane, 1.

San Miguel County: Fleck, 3; Hess, 3. See also Newmire, Placerville, Paradox Valley, Fall Creek.

southeastern Utah: Boutwell, 1.

southwestern Colorado: Thomas, xv., 2.

Telluride: Zalinski. 1.

western Colorado: Hillebrand and Ransome, 1; W — — , C. H., 3.

Vermilion Creek: King, 1.

Vernal, coal field, map: Gale, 7.

Vertebrata, General: Cope, 14, 16, 26, 30, 37, 46, 49, 50, 52, 61, 62, 65, 68; Lull, 1; Marsh, 4, 5, 35, 39, 46; Roger, 1; Wortman, 1; Wortman and Matthew, 1; Zit- tel, 2, 3.

Arapahoe formation, Denver: Em- mons, Cross, and Eldridge, 2.

bibliography and catalogue: Hay, O. P., 1.

Cretaceous: Cope, 19, 22; Emmons, Cross, and Eldridge, 2.

Dakota: Cope, 27.

Denver, near: Cannon, 11.

Denver beds : Cope, 69 ; Marsh, 46.

Dolores: Cross, Spencer, and Pur-

ing, 1. Equus beds: Cope, 66. Florissant: Cockerell, 34.

Jurassic, Denver Basin: Emmons, Cross, and Eldridge, 2.

Jurassic: Knight, W. C, 1; Leidy, la.

Morrison, Lee, W. T., 4.

Pliocene, northern Colorado: Cope,

Puerco: Cope, 63.

Silurian, Canon City: Walcott, 3, 3a, 5.

Tertiary: Cope, 60; E?mmons, Cross, and Eldridge, 2; Hayden, 13; Leidy, 1, 2.

Titanotherium beds: Hatcher, 2.

Victor, Ajax mill: Of, 1.

Anna Lee mine: Lakes, 62.

gold: Lakes, 41.

Golden Cycle mill: Henahen, 1.

Independence mine: Rickard, T. A., 19.

Portland mill: Edgerton, 1; Hena- hen, 1.

Vilas quadrangle, map: U. S. G. S.

Volcanic ash, General: Woolsey, 1. Durango: Woolsey,!. dust. Green River district: Mont- gomery, 1. production 1897: Roth well, 6.

Index

Volcanic rocks, Fortieth Parallel area, Colorado.

analyses: King, 1.

andesites: King, 1.

basalts: King, 1.

dacites: King, 1.

fusion: King, 1.

genesis and classification: King, 1.

propylltes: King, 1.

rhyolites: King, 1.

Vulcan, mining: Spurr, Garrey, and Ball, 1. rickardite: Ford, 1.

Vulcanlsm, GeneraZ; Ball,S.H.,l; Blow, 1 ; Comstock, 8 ; Conkling,! ; Cope, 6; Emmons, 4, 15; Endlich,l,2,3, 4, 5, 7, 8; Farish, 1, 2; Gilbert, 2; Hayden, 6, 14, 19, 22, 26; Hague and Emmons, 1; Hills, R. C, 3; Holmes, 2, 6 ; King, 1 ; Lakes, 54 ; Loew, 2; Marvine, 1, 2; New- berry, 3; Peale, 5, 7, 8; Pirsson, 2; Powell, 6; Purington, 3; Schiel, 1; Schwarz, 1; Scudder, 9, 10, 14; Stevenson, 3, 7; St. John, 1; Stone, 7; Wadsworth, 1; White, 4.

Archuleta County: Lee, H. A., 9.

Aspen : Henrich, 2.

Boulder, Magnolia district, olivinite dike: Whitaker, 1.

Boulder County, Sugarloaf: Ho- garty, 1.

Boulder County, trachyte: Breed,

Boulder County, Valmont dike: Lakes, 124.

Cebolla hot springs: Rickard, 23.

Cenozoic eruptions: Hills, R. C,

Cenozoic series, order of flows: Comstock, 7.

coal, anthracite, Gunnison County: Lakes, 6.

coal, changed by heat: Lakes, 172.

craters: van Diest, 9.

Crested Butte coal field : Lakes, 6.

Cripple Creek, limburgite: Stevens, E. A., 1.

Vulcanlsm. — Continued.

Cripple Creek, subterranean gases : Lindgren, 3; Lindgren and Ran- some, 2, 3.

Cripple Creek, volcanic rocks: Cross, 29.

Cripple Creek volcano: Miller, G. W., 1; Rickard, T. A., 15.

Cripple Creek: Cross and Penrose, 1; Lakes, 18, 21, 88; Lee, H. A., 9; Lindgren and Ransome, 3; Rickard, T. A., 15, 22, 26.

Custer County, eruptive rocks: Cross, 12.

Dotsero : Lakes, 6.

Elk Range: Holmes, 1; Lakes, 143.

Elmoro quadrangle: Hills, R. C,

Eocene eruptions: Hills, R. C, 17.

eruptive mountains: Peale, 9.

eruptives: Rickard, F., 1.

Evergreen : Ritter, 5.

extinct volcanoes in Colorado.

Lakes, 7. Florissant: Heilprin, 1. Glen wood, hot springs: Lakes, 6. Golden coal beds: Lakes, 6. Grahamite, dike of: Newsom, 1. Grand River coal field: Lakes, 72.

Grizzly Peak, granitic breccias:

Stone, 7. Gunnison gold belt: Lakes, 20. Gunnison and Ouray districts:

Lakes, 6. Hahns Peak: Draper, 1; Gale, 1;

Lakes, 143. Hinsdale County: Lee, H. A., 9. hot springs, Glenwood: Lakes, 6. hot springs, origin and heat.

Lakes, 164. hot springs, Pagosa: Lakes, 223. hot springs, Routt County: Lakes,

hot springs. Steamboat Springs:

Lee, H. A., 9. hot springs: Lakes, 178. igneous intrusion, examples of:

Lakes, 143.

Index

Vulcanitm. — Continued.

laccolitic mountains: Cross, 23; Gilbert, 6; Iddings, 2; Rickard, T. A., 15.

La Plata Mountains, igneous in- trusions: Cross, Spencer, and

Purington, 1; Lakes, 119. La Plata Mountains: Lakes, 34,

lava sheets, Colorado Plateau:

Gilbert, 2. Leadville district, eruptive rocks:

Emmons, 2. Leadville: Rolker, 2. Middle Park, asphalt veins: New-

som, 1. Monarch-Tomichi : Crawford, 4. monuments: Lakes, 176. Mosquito Range: Emmons, 9;

Lakes, 143. Needle Mountains: Cross, Howe,

Irving, and Emmons, 1. North Park: Hague and Emmons,

ore deposition: Lakes, 5, 21, 113,

140. 143. Ouray, dike of shale fragments

cutting sandstone dike: New*

som, 1. Ouray, hot springs: Cross, Howe,

and Irving, 1; Lakes, 6. Ouray: Cross, Howe, and Irving, 1. Pagosa, gas and hot springs:

Lakes, 96, 223. Pikes Peak district, sandstone

dike in granite: Newsom, 1. Pikes Peak: Cross, 24. Pliocene, and later eruptions:

Hills, R. C, 17. Plomo, lava flows: Gunther, 1. pre-Tertiary eruption: Hills, R. C,

Quaternary: Lakes, 143. Rabbit Ears district: Grout, Wor- cester, and Henderson, 1. Rico Mountains, gas springs:

Cross and Spencer, 2; Ransome,

Rosita, volcano: Cross, 27. Rosita: Wulsten, 1.

Vulcanltm. — Continued.

Rosita Hills: Cross, 27.

Rosita and Silver Cliff, early

Eocene: Emmons, 24. Rosita and Silver Cliff: Lee, H. A.,

9; Welles and Lakes, 1. Routt County, hot springs: Lakes,

Salida, crater near: Lakes, 244. San Juan, eruptives: Comstock, 1,

San Juan: Cross, 32; Pinch, 1;

Lakes, 223; Read, 4. San Miguel County: Lee, H. A., 9;

Spaulding, 1. Silverton district: Cross, Howe,

and Ransome, 1. southeastern Colorado: Gilbert, 6;

Stevenson, 8. southwestern Colorado: Comstock,

Spanish Peaks, coal seams, effect

of volcanic action on: Lakes,

108; Savage, 1. Spanish Peaks, eruptions: Hills, R.

C, 9, 10, 14, 25; Lakes, 143, 156. Steamboat Springs, hot springs:

Lee, H. A., 9. subterranean gases : Lindgren and

Ransome, 1. Telluride, lava flow, Marshall

basin: Pearce, 6. Telluride: Cross, 26; Cross and

Purington, 1. Tertiary: Hollister, 1; King, 1;

Spurr, Garrey, and Ball, 1. Trinidad coal fleld: Lakes, 6; Rich- ardson, 2. Types of volcanic rocks: Hills, R.

C, 20. Walsenburg, intrusions: Hills, R.

C, 15.

Wagon Gulch, bog iron ore: Larsen, 1.

Wagon Wheel Gap, water analysis: Lee, H. A., 9.

springs: Loew, 1. Walsenburg, andesite: Hills, R. C, 15.

artesian wells: Hills, R. C. 16.

basalt: Hills, R. C, 15.

cement rock: Hills, R. C, 15.

Indkx

Walsenburg. — Continued.

coal, analysis of: Hills, R. C, 15. coal: Darton, 9; Hills, R. C, 15,

27; Lakes, 158; Potter, W. B, 1;

Richardson, 2; Whiteside, 4. coke: Hills, R. C, 15. fire clay: Hills, R. C, 15. granite-felsophyre: Hills, R. C, 15. lamprophyre: Hills, R. C, 15. limestone: Hills, R. C, 15. map: Hills, R. C, 15; U. S. G. S. monzonite porphyry: Hills, R. C,

Morrison: Lee, W. T., 6. paleontology, fossils from : Hollick,

petroleum: Hills, R. C, 15. physiography: Hills, R. C, 15. sandstone: Hills, R. C, 15.

Ward, dike rock: Palmer and Stod- dard, 1. geology, economic: Emmons, 7. minerals: Loew, 1. mines: Mg. Rept., 7. ore deposits: Rlckard, T. A., 28. tungsten, analysis of: George, 3. tungsten: Ekeley, 1.

Washington County, map: Clason Map

Co. Water, General: Elliot, R. S., 1; End-

lich, 4, 5; Gannett, H., 1, 6;

Ladd, 1; Lowe, 2; Newell, 6, 7;

Thomas, C, 1, 2; Wheeler, G. M.,

6; Wilson, J. S., 1. Arkansas Valley, water of other

formations than Dakota: Darton,

arid regions: Newell, 1. Dakota water, quantity and source,

Arkansas Valley: Darton, 13. Dakota water, Spanish Peaks:

Hills, R. C, 25. Denver well, analysis of: Eakins,

Eocene, lower, Spanish Peaks:

Hills, R. C, 25. floods, destructive, 1905: Meeker,

Hinderlider, and Tobish, 1. gaging stations: Walcott, 10,' 11,

13; Wood, B. D., 1.

Water. — ('ontinued.

northwestern Colorado: White, 4. Platte River basin: Newell, 3. pollution of inland streams, laws

forbidding: Goodell, 1. rainfall in Denver Basin: Emmons,

Cross, and Eldridge, 2. rainfall: Newell, 12; Ward, R.

Dec, 1. Ravens Park district: Gale, 5. San Luis Valley: Slebenthal, 4. San Miguel, mining: E. and M. J.,

silicic acid in waters of mountain

streams: Headden, 4. White River district: Chittenden,

It was found impossible to in- clude all references to water re- sources of the state. For informa- tion along this line consult —

1. Water Supply Papers, published by the U. S. Geol. Surv., espe- cially Nos. 16, 18, 28, 37, 66, 75, 84, 99, 133, and 175. A general bibliography from 1879 to 1904 will be found in Water Supply Paper No. 120.

2. Annual reports of the U. S. Geol. Surv., under topics: water re- sources, underground water, irrigation, hydrography, stream measurements, reservoirs, names of streams, etc.

Water supply, General: Newell, 8. Apishapa quadrangle: Stose, G.

W., 1. Denver, near: Foster, E. L., 1. Hahns Peak: Draper, 1. Ouray quadrangle: Cross, Howe,

and Irving, 1. plains: Hay, Robert, 2. public lands: Newell, 5. Rico quadrangle: Cross and Ran-

some, 1. San Luis Valley: Siebenthal, 4.

Weathering, General: Endlich, 4, 6, 8 Hayden, 6, 12, 14, 19; Holmes, 6 Newberry. 3; Peale, 5; Rhoda, 3 Russell, 1.

1 Xdex

Weather! ng. — Continued.

discoloration of rocks: Blake, W.

P., 2. Elk Range: Holmes, 1. ore deposits, Summit district:

Hills, R. C, 3. Pikes Peak granite: Lakes, 33;

Matthew, 2. rockslides, Monarch - Garfield :

Crawford, 3. rock streams, Ouray quadrangle:

Cross, Howe, and Irving, 1. rock streams, Needle Mountains:

Cross, Howe, Irving, and Em- mons, 1. Telluride mining district, effects

on topography: Purington, 2.

Weld County, altitudes in: Wilson et a1., 3. map: Clason Map Co.

Weils, Arkansas Valley: Darton, 13. Dakota, in, Boulder district: Fen-

neman, 5. Denver Basin: Emmons, Cross, and

Eldridge, 2. deep borings: Fuller, Lines, and

Veatch, 1. deep borings, record by counties:

Darton, 9, 10. deep drilling: Fuller, Lines, and

Veatch, 1. flowing, Boulder district: Fenne-

man, 5.

West Denver sheet, map: Gannett, 19.

Western Colorado, asphaltum: Lakes,

map: Hayden, 31. uranium: Hillebrand and Ran-

some, 1 ; W , C. H., 3.

vanadium: Hillebrand and Ran-

some, 1 ; W , C. H., 3.

Western Elk Mountains, coal: Lee, W. T., 13.

geology: Cross, 23.

rocks, analyses: Clarke and Hille- brand, 1.

Western oil fields: Lakes, 195a.

Western Yampa coal fleld: Gale, 8.

West San Miguel, map: Holmes, 6.

Wet Mountains, minerals from, list: Charlton, 3. pre-Cambrian : Van Hise, 1.

Wheatatone Mountain, geology: Cross,

White Cross, mining area: Woolsey, 2.

White Earth River: Pale, 8.

White Pine, iron ore: Chauvenet, 8; Harder, 2. map: Harder, 2.

White River, General: Bechler, 2; Chit- tenden, 2 ; Endlich, 5, 7, 8 ; White,

coal, analysis of: Hollister, 1.

coal field, map: Gale, 7, 8; Hewett,

fossil insects. Chagrin Valley: Scudder, 8.

gas: Lakes, 8, 65, 188, 236.

geology, dynamic: Hills, 20.

gllsonite, map: Eldridge, 6.

hydrology: Chittenden, 2; Gale, 6.

Indian reservation, map: Nell, 3.

map: U. S. G. S.

oil. Black Gulch: Gale, 5; Hollis- ter, 1.

paleontology: White, 6b.

physiography: Chittenden, 2.

plateau: Hills, 20.

Will lama Canyon, paleontology, fossils described: Walcott, 14.

Williams Fork, Yampa River: White,

Williams River: Bechler, 1.

Williams River valley: Marvine, 1.

Willis Gulch, enargite: Burton, B. S., 1.

Willow Creek, Draper, 2.

placer mining: Hartley, C, 2.

Wind Cave: LeCouppey de la Forest,

Wind River, Wind River and Huerfano beds in Huerfano lake basin: , Osborn, 1.

WItherite: Ohly, 2.

Wonsitz Valley: White, 4.

Woolton, coal mines: Hills, R. C, 25.

Yampa, coal field. See Routt County.

Index

Yampa Canyon and Plateau: King, 1.

Yampa Mountain (Juniper): White, 4.

Yampa Plateau: Powell, 2; White, 26.

Yannpa Plateau: Hague and Emmons, 1; Powell, 2; White, 26. See also Blue Mountains.

Yampa River, geology: Bechler, 2; Powell, 1. Laramie: Cross, 18. paleontology: White, 6b. Williams Fork: White, 4.

Yampa River Valley, General: White,

Fortification Peak: Hague and Emmons, 1.

geology, general: Hague and Em- mons, 1.

igneous rocks: Hague and Em- mons, 1.

physical features: Hague and Em- mons, 1.

structural features: Hague and Emmons, 1. Yankee Girl: Schwarz, 5; Weston, 2. Yule Creek. See Gunnison County. Yule formation. See list of formations,

page 479. Yuma County, map: Clason Map Co.

volcanic ash: Woolsey, 1.

water supply: Hay, R., 2. Zinc, Oeneral: Bain, 5; Demaret, 1; Endlich, 5; Lakes, 76, 143; Mg. Rept., 45; Nat. Conservation Com., 1; Swart, 1.

carbonates, Leadville: Mg. World,

Clear Creek County: Lawrence, B. B., 2.

Custer County, Marlon mine: Bab- bit, 1.

Gladstone: Richards and Locke, 2.

history of pilnlng: Mg. Rept., 45; Mg. Scl., 6.

Idaho Springs: Spurr and Garrey,

Lake City: Irving and Bancroft,!.

nc. — Continued.

Leadville: Argall, G. O., 2; Bur- ton, 1; Emmons, 2, 9; Freeland, 1; Henderson, C. W., 5; War- wick, 1.

metallurgy of: Lawrence, D. H., 1; Siebenthal, 6; Swart, 1.

metallurgy, treatment of ores at Canon City plant: Barber, P., 1; DeCou, 1; Lakes, 184; Mines and Mining, 5; Parmelee, 2.

metallurgy, smelting at Pueblo: Meister, 1.

Monarch-Garfield district: Craw- ford, 3.

Monarch-Tomichi area: Crawford,

Montezuma district: Ritter, 8.

Ouray: Kedzie, 1.

production 1898-1899: Rothwell, 7, 8—1900-1902: Struthers, 1, 2, 3— 1901: Lee, H. A., 8—19024905: Day, 15, 16, 17, 18—1902: Dow- ner, F. M., 1, 2; Mines and Min- ing, 2; Ores and Metals, 6 — 1903: Eckel, 2; Mg. Rept, 34; New- land, 1—1904: Mines and Min- ing, 3; Ores and Metals, 8— 1905: Collins, G. E., 3; Mg. Rept., 45; Ores and Metals, 9 — 1906: In- galls, 5; Thom, 1—1907: Dalzell, 2; Ingalls, 6; Thom, 2—1908: Henderson, C. W., 1; Ingalls, 7 —1909: Collins, G. E., 9; Ingalls, 8—1910: Dalzell, 3; Fay, 1; Hen- derson, C. W., 4; Siebenthal, 6; Van Wagener, T., 4; Warwick, 4—1911: Collins, G. E., 11; Hen- derson, C. W., 5; Of, 1; Parker, E. W., 7—1912: Henahen, 1.

Rico quadrangle: Cross and Ran- some, 1; Ransome, 2.

San Juan: Osgood, 1.

silver-lead and, Montezuma: Rit- ter, 7.

Sllverton: Cross and Howe, 1.

Tenmlle district: Emmons, 27.

Lists

CHEMICAL (See also analyses of rocks in:

Air: Schiel, 1.

Alaskaite: Am. Jour. Sci., 1; Lewis, H.

C.,1. Albertite: Kneeland, 1.

Alkali syenite porphyry: Clarke, P. W., 8.

Allanite: Clarke, F. W., 6; Eakins, 1.

Altaite: Endlich, 6.

Alumina: Kedzie, 1.

Alunite: Clarke, F. W., 6; Cross, 16; Cross and Spencer. 2; Eakins, 9; Hurlburt, 1.

Alunogen: Headden, 6; Hobbs, 2.

Analcite: Clarke, F. W., 6; Clarke and Hillebrand, 1; Cross and Hillebrand, 4; Steiger, G.,"l.

Analcite, basalt: Clarke, F. W., 9; Clarke and Hillebrand, 1; Cross, 28.

Andeslte: Clarke, F. W., 9; Crawford, 4; Cross, 1, 12; Hillebrand, 11; Ho- garty, 1; Kedzie, 1; Ransome, 3.

Andeslte breccia, altered: Clarke, F. W., 8; Ransome, 3.

Andesite tuff: Lakes, 118.

Annaberglte: Genth, la.

Aplitic granite: Clarke, F. W., 8.

Apophylllte: Clarke, F. W., 6; Cross and Hillebrand, 2, 4.

Arfvedsonite : Endlicli, 6.

Argentite: Van Horn, 1.

Argentobismutite: Genth, la.

Astrophyllite: Clarke, F.W., 6; Eakins, 7, 8; Endlich, 6.

Augite: Clarke, F. W., 6.

Augite andesite: Clarke and Hille- brand, 1.

Augite diorite: Clarke and Hillebrand, 1; Cross, 12.

ANALYSES Iddings, 3; Washington, 1, 2.)

Augite-mica syenite: Clarke and Hille- brand, 1; Emmons, Cross, and Eld- ridge, 2.

Augite monzonite: Clarke, F. W., 8.

Augite syenite: Clarke, F. W., 8; Cross, Spencer, and Purlngton, 1.

Basalt: Clarke, F. W., 9; Clarke 'and Hillebrand, 1; Emmons, Cross, and Eldridge, 2; Grout, Worcester, and Henderson, 1.

Basic dike rock. La Plata Mountains: Clarke, F. W., 8; Cross, Spencer, and Purlngton, 1.

Bastn&site: Allen and Comstock, 1; Clarke, F. W., 6; Hillebrand, 8.

Bauxite: Ohly, 7.

Beegrite: Genth, la.

Bertrandite: Penfleld, 2.

Biotite latite: Clarke, F. W., 8.

Biotite porphyrite: Clarke and Hille- brand, 1; Crawford, 4.

Biotite trachyte: Clarke, F. W., 8.

Bismuth: Hillebrand,!.

Bole: Clarke, F. W., 6; Cross and Hillebrand, 4.

Bornite: Pearce, R., 2.

Building stone: Foster, E. L., 1.

Calaverite: Clarke, F. W., 6; E:ndlich, 6; Hillebrand, 6, 7, 10; Rickard, T. A., 16.

Camptonite: Clarke, F. W., 9; Cross, 42; Hillebrand, 11.

Carnotite: Clarke, F. W., 6; Day, 12. 13; Fleck and Haldane, 1; Hille- brand and Ransome 1, 2; Lindgren, 9; Ohly, 1, 11, 12.

Cement: Bancroft, G. J., 3; Lakes, 204.

Cerussite: Warren, C. H., 1.

Chabazite: Clarke, F. W., 6; Cross and Hillebrand, 4.

Lists

CHEMICAL ANALYSES— Continued

Chert: King, 1.

Chloropal: Cross and Penrose, 1.

Clay: Clarke and Hillebrand, 1; Day,

10; Richardson, 3; Schaller, 1. Coal, 37 from Rocky Mountain region:

Belden, Delamater, and Groves, 1. Coal: Campbell, 1, 2, 5; Chisholm, 3; Clark, R. N., 1; Cross, Spencer, and Purington, 1; Day, 7, 18; Drown, 1; Eakins, 6; Eldridge, 2; Emmons, Cross, and Eldridge, 1, 2; Endlich, 4, 6 ; E. and M. J., 3, 37 ; Fenneman and Gale, 1; Femald, 2; Fleck and Hal- dane, 1 ; Frazer, 2 ; Gale, 3, 5, 7 ; Gard- ner, J. H., 1; Goldman, 1; Grout, 1; Hayden, 4, 12; Headden, 8, 9; Her- rick, 2; Hills, R. C, 6, 15, 22, 24; Hodge, 1; Hosea, 2, 4; HoUister, 1; Jones, J. D., 2; Koenig, 3; Lakes, 3, 4, 6, 8, 58, 69, 72, 90, 105, 116, 117, 128, 149, 154, 157, 160, 161; Lee, W. T., 10, 13; Lesquereux, 2; Loew, 1; Lord, 1, 2; Macfarlane, 1 ; Martin, 2; Marvine, 1; McLaughlin, J. E., 1; McNeil, 1, 4; Meade, 1; Merriam, 1; Parker, Holmes, and Campbell, 1, 2; Parsons and Liddell, 1; Peale, 7, 8; Potter, W. B., 1 ; Raymond, 1, 7 ; Richardson, 1, 2; Rickard, T. A., 23; School of Mines, 1; Shaler, 2; Taff, 1; Thiele, 1; Washburne, 4, 5; Weeks, 1; Weston, 5, 6; Williams, C. P.. 1; Woodruff, E. G., 1.

Coal dust and air from mines: Ekeley,

Coke: Day, 7; Lakes, 4, 128; School of Mines, 1; Weeks, J. D., 3.

Coloradoite: Endlich, 6.

Columbite: Clarke, F. W., 6; Genth, la; Hillebrand, 1.

Cosalite: Cross and Hillebrand, 4.

Covellite: Thornton, 1.

Cryolite: Clarke, F. W., 6; Cross and Hillebrand, 3, 4; Ohly, 2.

Cuprobismutite: Clarke, F. W., 6.

Cyrtolite: Clarke, F. W., 6; Genth, 1.

Dacite: Clarke and Hillebrand, 1.

Danalite : Genth, 1.

Diabase: Clarke, F. W., 7.

Diaspore: Clarke, F. W., 6; Cross, 16; Eakins, 9.

Diorite: Clarke and Hillebrand, 1; Crawford, 4; Cross, 23; Cross, Spen- cer, and Purington, 1; Hillebrand, 11; Purington, 2.

Diorite-monzonite: Cross and Puring- ton, 1.

Diorite porphyry: Clarke, F. W., 8, 9; Clarke and Hillebrand, 1; Crawford,

4; Cross, Spencer, and Purington, 1;

Hillebrand, 11.

Dolerite: Clarke and Hillebrand, 1.

Dolomite: Chauvenet, 1; Clarke and Hillebrand, 1; Crawford. 4; Ohly. 2; Spurr, 1.

Efflorescence on sandstone: Eakins, 4.

Elpasolite: Clarke, F. W., 6.

Ehnmonsite: Hillebrand, 12, 13.

Elmpressite : George, 5.

Bnargito: Burton, B. S., 1: Headden, 6; Thornton, 1.

Enstatite diabase porphyry: Clarke and Hillebrand, 1.

Epidote: Clarke.. F. W., 6; Eakins. 10.

Epsomite: Hobbs, 2.

Eyruptive rocks, Mosquito Range: Em- mons, 9.

Fayalite: Hidden and Mackintosh, 1.

Feather alum: Hiiiley, E. H. S., 1.

Feldspar: Clarke, F. W., 6; Geijsbeek, 1 ; Headden, 4.

Felsite porphyritc: Palmer and Stod- dard, 1.

Ferberite: Ekeley, 1; George, 3.

Fire clay: Clarke and Hillebrand, 1 Emmons, Cross, and Eldridge, 2 Fisher, 1; Furman, 1; Geijsbeek, 1 Ikes, 165; Mg. Rept., 33; Stose, 1 Ward. W. S., 1.

Fluorspar: Burchard, E. F., 6.

Freieslebenite (mineral wool) : Clarke, F. W., 6.

Gabbro: Clarke. F. W., 8; Cross and Purington, 1.

(rabbro porphyry: Clarke, F. W., 5. 8; Cross and Purington, 1.

Gadolinite: Elakins, 1.

4G0

Lists

CHEMICAL ANALYSES— Continued

Garnet: Clarke, F. W., 6; Cross, 8;

Eakius, 10; Koenlg, 1; Penfleld and

Sperry, 1. Gas: Curtis, H. H., 1; George, 5; Lind-

gren, 3. Gearksutite: Clarke, F. W., 6; Cross

and Hillebrand, 3, 4. Goldschmidtite: Hobbs, 1. Granite: Chauvenet, 1; Clarke, F. W.,

8, 9; Clarke and Hillebrand, 1; Craw- ford, 4; Hague and Emmons, 1;

Henry, 1; Lakes, 94, 165. Granite gneiss: Clarke, F. W., 8;

Clarke and Hillebrand, 1. Granite porphyry: Clarke and Hille- brand, 1; Crawford, 4. Granitite: Clarke and Hillebrand, 1.' Guitermanite: Clarke, F. W., 6; Cross

and Hillebrand, 4; Hillebrand, 3. Gypsum: Burchard, E. F., 5; Clarke, F.

W., 6; Henahen, 1; Ransome, 2. Halloysite: Clarke, F. W., 6; Ransome,

Halotrichite: Bailey, E. H. S., 1, 2. Hematite: Day, 3; Rolker, 1. Henryite: Endlich, 6. , Hessite: Endlich, 6. Heulandite: Clarke, F. W., 6; Eakins,

Hinsdalite: Larsen and Schaller, 1;

Schaller, W. T., 3. Hornblende andesite: Van Horn, 3. Hornblende-mica porphyrite: Craw- ford, 4. Hornblende porphyrite: Clarke and

Hillebrand, 1. Hubnerite: Clarke, F. W., 6; Cross and

Hillebrand, 4; Ekeley, 1; Genth, 2;

George, 3; Hillebrand, 1. Hydrophane: Kunz, 1. Hypersthene: Clarke, F. W., 6; Clarke

and Hillebrand, 1. Hypersthene andesite: Clarke and

Hillebrand, 1. Igneous rocks in Colorado: Spur, Gar-

rey, and Ball, 1. Ilesite: Am. Jour. Sci., 1. Interspherulitic mass: Clarke and

Hillebrand, 1.

Iron, meteoric: Headden, 12.

Iron ore, bog: Lakes, 5.

Iron ore: Chauvenet, 3, 4, 5, 6; Clark. R. N., 1; Devereux, 1; Drown, 1; Putnam, 1; Raymond, 7; Slngewald.

Jarosite: Clarke, F. W., 6; Koenig, 2; Ransome, 2.

Kaolinite: Clarke, F. W., 6; Cross and Hillebrand, 4; Cross and Pen- rose, 1; Loew, 1; Rickard, T. A., 15.

Kobellite: Kellar, 1.

Krennerite: Chester, 2.

Lamprophyre: Clarke, F. W., 5, 8; Cross and Spencer, 1.

Latite: Clarke, F. W., 8; Ransome, 3.

Latite-phonolite: Clarke, F. W., 8.

Laumontlte: Clarke, F. W., 6; Cross and Hillebrand, 2, 4.

Lava: Chauvenet, 1.

Ipidomelane: Clarke, F. W., 6.

Levynite: Clarke, F. W., 6; Cross and Hillebrand, 4.

Limestone, alteration product: Ran- some, 2.

Limestone, blue: Clarke and Hille- brand, 1 ; Emmons, 9 ; Lakes, 2.

Limestone, crystalline: Kedzie. 1.

Limestone, dolomitic: Clarke and Hillebrand, 1.

Limestone, in tepee core: Darton, 13; Fisher, 1.

Limestone, oiilitic: Clarke and Hille- brand, 1.

Limestone, serpen tinous: Clarke and Hillebrand, 1.

Limestone, white: Clarke and Hille- brand, 1.

Limestone: Burchard, E. F., 8; Chau- venet, 1, 6; Clarke and Hillebrand, 1; Crawford, 4; Eckel, 1; Fisher, 1; Hague and Emmons, 1; Kedzie, 1; Lakes, 165, 204; Martin, 1; Stose, 1.

Lionite: EIndlich, 6.

Ix)ess: Clarke, F. W., 9; Clarke and Hillebrand, 1.

Liillingite: Clarke, F. W., 6; Cross and Hillebrand, 4; Hillebrand, 1.

Magnesite: Ohly, 2.

Lists

CHEMICAL ANALYSES— <:;ontinued Manganese iron ore: Lakes, 26; Pen- Olivinite: Whitaker, 1.

rose/1. Manganiferous ores: Weeks, J. D., 5.

Marble: Chauvenet, 1; Day, 11; Lakes,

Mesolite: Clarke, F. W., 6; Cross and

Hillebrand, 2, 4; Patton, 4. Meteorite: Butters, 1; Smith, J. L., 1,

Mica: Clarke, P. W., 2, 3. Mica andesite: Blake, J. C, 1. Mica schist: Clarke, F. W., 8. Mineral springs, radium-bearing:

Headden, 5. Mineral springs: Peale, 14. Mineral iw:aters. See water. Mineral wool: Clarke, F. W., 6. Minerals from Gold Hill: EJndlich, 1. Minium: Hawkins, 1. Mizzonite: Clarke, F. W., 6. Molybdite: Schaller, 2. Monchiquite: Clarke, F. W., 8. Monzonite, quartz bearing: Cross and

Spencer, 1. Monzonite: Clarke, F. W., 5, 9; Cross,

Howe, and Ransome, 1; Cross and

Purington, 1; Cross, Spencer, and

Purington, 1. Monzonitic facies of diorite mass:

Clarke, F. W., 8. Monzonitic porphyry: Clarke, F. W.,

8; Ransome, 3. Mordenite: Clarke, F. W., 4. Muscovite: Clarke, F. W., 6. Natramblygonite: Schaller, W. T., 3. Natrolite: Clarke, F. W., 6; Cross and

Hillebrand, 4. Nepheline basalt: Clarke and Hille- brand, 1 ; Cross and Penrose, 1. Nepheline syenite: Clarke, F. W., 9;

Clarke and Hillebrand, 1 ; Cross and

Penrose, 1; Hillebrand, 11. Nepheline tephrite: Clarke, F. W., 7,

Nevadite: Crawford, 4. Oil: Gale, 5; Kirkbride, 1; Lakes, -97,

146, 195a; Ivee, H. A., 9; Ohly, 9;

Washburne, 2. Olivine basalt: Clarke, F. W., 8.

Ores, Battle Mountain: Gulterman, F.,

Ores, Cripple Creek: Cross and Pen- rose, 1; Baker, 1; Graton, 1; Smith, F. C, 1.

Ores, Custer County: Emmons, 23.

Ores, Dudley smelter: Peters, 1.

Ores, Geyser mine: Emmons, 24.

Ores, Gilpin County, California mine: Rickard, F., 1.

Ores, Idaho Springs: Bain, 2.

Ores, Lake City: Emmons and Irving,

Ores, Leadville: Butler, G. M., 2; Free- land, T., 1; lies, 3; Rolker, 2.

Ores, Ouray County: Kedzie, 1.

Ores, oxidized: Ransome, 2.

Ores, Pikes Peak quadrangle: Math- ews, 2.

Ores, Red Cliff: Lakes, 122; Kedzie, 1.

Ores, Red Mountain: Kedzie, 1.

Ores, Rico: Rickard, T. A., 7.

Ores, Rosita: Clark, R. N., 2.

Ores, telluride. Cripple Creek: Crowe,

Ores, Telluride, Liberty Bell Mine: WInslow, 2.

Ores, Telluride, Smuggler - Union

mines: Porter, 1.

Orthoclase: Clarke, F. W., 6; Clarke and Hillebrand, 1 ; Crawford, 4 ; End- lich, 6.

Ozokerite: Ohly, 5.

Pachnolite: Clarke, F. W., 6; Cross and Hillebrand, 3.

Palladium: Headden, 6.

Pearceite: Penfield, 8.

Peridote: Clarke and Hillebrand, 1.

Peridotile: Clarke, F. W., 9; Cross, 12.

Petzite: Endlich, 6; Hillebrand, 9.

Phenacite: Penfield and Sperry, 2.

Phonolite: Clarke, F. W., 9; Clarke and Hillebrand, 1; Cross, 10; Cross and Penrose, 1; Hillebrand, 11.

Phosgenite: Warren, C. H., 1.

Pickeringite: Endlich, 6.

Picrotltanite: Whltaker. 1.

Pitchblende: Ohly, 12.

Lists

CHEMICAL ANALYSES— Continued

Pitc)i8tone, devitrified: Clarke and HiUebrand, 1.

Plagioclase basalt: Clarke and Hille- brand, 1.

Polybasite: Genth, la; Penfield and Pearce, 1; Spurr, 1.

Porphyrite: Clarke, F. W., 5; Craw- ford. 4.

Porphyrite, quartz: Clarke and Hille- brand, 1.

Porphyrite, quartz-hornblende-mica : Clarke and Hillebrand, 1.

Porphyritic diorite: Clarke, F. W., 5; Crawford, 4.

Porphyritic granitite: Clarke, F. W., 5.

Porphyritic lamprophyre: Clarke, F. W., 5, 8.

Porphyry: Crawford, 4; Cross, 23; Clarke and Hillebrand, 1; Patton, 10.

Potosi volcanic series: Cross, Howe, and Ransome, 1.

Prosopite: Clarke, F. W., 6; Cross, 3; Hillebrand, 8.

Proustite: Van Horn, 1.

Prowersose: Cross, 34.

Psilomelane: Clarke, F. W., 6; Em- mons, 23.

Ptilolite: Clarke, F. W., 4, 6; Cross and Eakins, 1, 2; Dana, E. S., 7.

Pyrite: Kraus and Scott, 1.

Pyroxene: Clarke, F. W., 6; Eakins,

Pyroxene andesite: Clarke, F. W., 8; Clarke and Hillebrand, 1; Cross, Howe, and Ransome, 1.

Pyroxene-hornblende andesite: Clarke, F. W., 8.

Quartz alunite: Clarke and Hille- brand, 1.

Quartz-biotite latite: Clarke, F. W., 8; Cross, Howe and Irving, 1.

Quartz diaspore: Clarke and Hille- brand, 1.

Quartz diorite: Crawford, 4.

Quartz - hornblende - mica porphyrite : Crawford, 4.

Quartz latite: Clarke, F. W., 8; Craw- ford, 4; Cross, Howe, and Ransome,

Quartz latite porphyry: Crawford, 4.

Quartz monzonite: Clarke, F. W., 5, 8, 9; Crawford, 4.

Quartz monzonite gneiss: Crawford, 4.

Quartz monzonite porphyry : Clarke, F.

W., 8; Crawford, 4; Cross, Howe,

and Irving, 1.

Quartz porphyrite: Crawford, 4.

Quartz porphyry: Clarke, F. W., 9; Cross, 23; Palmer and Fulton, 1.

Quartz-pyroxene latite: Clarke, F. W., 8; Cross, Howe, and Irving, 1.

Quartz syenite porphyry: Cross, Howe, and Ransome, 1.

Quartz trachyte: Cross, 41, 42.

Quartzlte, lower: Kedzle, 1.

Quartzlte: Kedzle, 1.

Rhode chrosite: Kunz, vl.

Rhyolite: Clarke, F. W., 8; Clarke and Hillebrand, 1; Crawford, 4; Cross, 8. 12; Eakins and Chatard, 1; Lakes. 94; Larsen. B. S., 1.

Rhyolite residual glass: Clarke and Hillebrand, 1.

Rhyolite tuff: Clarke and Hillebrand. 1; Lakes, 165.

Rhyolitic vitrophyre: Clarke. F. W.. 5,

Riebeckite granite: Clarke, F. W., 8.

Riebeckite: Clarke and Stelger, 2.

Rocks of Colorado: Iddings, 3; Wash- ington, 1, 2.

Rocks from Cripple Creek district: Miller, G. W., 1.

Rocks from Cripple Creek volcano: Graton, 1,

Rocks from Elk Mountains: Crawford,

Rocks from Glenwood Springs: Spurr.

Rocks from Monarch-Tomlchi district: Crawford, 4.

Rocks from Pikes Peak district: Math- ews, 2.

Rocks from Pueblo quadrangle: Gil- bert, 7.

Rocks from Roslta and Sliver Cliff: Cross, 27.

L18Ts

4G3

CHEMICAL ANALYSES— Continued

Rocks from Tomichi and Monarch dis- trict: Crawford, 4.

Rocks from West Elk Mountains: Crawford, 4.

Roscoelite: Endlich, 6; Hillebrand and Ransome, 2.

Rutile: Clarke, F. W., 6; Genth, 1; Schalier, W. T., 3; Smith, W. B., 2.

Samarsklte: Clarke, F. W., 6; Hille- brand, 4.

Sandstone, alteration product: Ran- some, 2.

Sandstone: Chatard, 1; Chauvenet, 1; Day, 5; Hague and Emmons, 1; Lakes, 95.

Sanidine: Clarke and Hillebrand, 1.

Schirmerite: Endlich, 6.

Scolecite: Clarke, F. W., 6; Cross and

Hillebrand, 4; Eakius, 10. Shale: Fisher, 1; Martin, 1; Van Hlse,

Silver: Emmons, 24; Kedzie, 1;

Pearce, R., 12. Sinter: Elmmons, 23, 24. Slate: Van Hise, 3. Smaltite: lies, 2. Soda: Hayden, 12. Sodium carbonate: Hosker, 1, 2. Soils: Ix)ew, 3; Emmons, 7; Van Hise,

Spessartite: Clarke, F. W., 6. Spherulites in rhyolite: Clarke and

Hillebrand, 1; Eakins and Chatard,

Stilbite: Clarke, F. W., 6; Cross and

Hillebrand, 4. Sulphantimonites: Eakins, 2. Sulphur ore: Larsen and Hunter, 1;

Schalier, W. T., 13. Syenite: Clarke, F. W., 8, 9; Clarke

and Hillebrand, 1 ; Cross, 12. Syenite lamprophyre: Clarke and

Hillebrand, 1 ; Hillebrand, 11. Sylvanite: Clarke, F. W., 1; Endlich,

6; Ohly, 10; Palache, 1; Rickard, T.

A., 16. Tellurium associated with arsenopy-

rite: Headden, 3.

Tellurium: Bailar, 1; Bail ar and Wood- ward, 1; Endlich, 6; Hillebrand and Allen, 1; Jennings, 1; Pearce, R., 9, 13; Purington, 2; Rickard, T. A., 16; Woodward, 1.

Tenuantite: Penfleld and Pearce, 1; Spurr, 1.

Tetradymlte: Hillebrand, 13; Genth, la.

Thomsonite: Clarke, F. W., 6; Clarke and Steiger, 2; Patton, 4; Steiger,

Thomsonite spherules: ' Cross and Hillebrand, 4.

Tinguaite: Clarke, F. W., 5; Clarke and Hillebrand, 1.

Topaz: Clarke, F. W., 6.

Trachyte: Breed, 1; Clarke, F. W., 8; Clarke and Hillebrand, 1; Cross, 12.

Trachyte-phonolite: Cross and Pen- rose, 1.

Trachydolerlte: Clarke, F. W., 8.

Tscheffkinite: Eakins, 7.

Tuff: Emmons, Cross and Eldridge, 2.

Tuff, andesite: Lakes, 118.

Tungsten: Cooper, C. A., 1; Ekeley, 1;

George, 3; Lindgren, 6; Ohly, 8;

Walker, 1. Tysonite: Allen and Comstock, 1;

Clarke, F. W., 6; Hillebrand, 8, 10. Uraninite: Clarke, F.W., 6; Endlich, 6;

Fleck, 4; Hillebrand. 5. Uranite: Day, 12.

Uranium, chemical estimation of: Grif- fin, C. E., 1. Vanadiferous sandstones: Day, 13,

Hillebrand and Ransome, 1. Vanadium, chemical estimation of:

Griffin, C. E., 1. Vanadium mica: Day, 13. Vanadium in porphyry: Hillebrand, 11. Vanadium: Fleck, 4. Vesuvianite: Clarke, F. W., 6. Vitrophyre: Clarke, F. W., 8; Cross

and Purington, 1. Vogesite: Clarke, F. W., 8. Volcanic ash: Woolsey, 1. Warrenite: Clarke, F. W., 6.

Gi

Lists

CHEMICAL ANALY8E8--Continued

Water, Arkansas Valley: Clarke, F.

W., 9; Gilbert, 5. Water, artesian: Clarke, F. W., 9;

Chauvenet, 2; Strong, W. C, 1. Water, Custer County, Geyser mine:

Clarke, F. W., 9; Emmons, 23, 24. Water, Dakota sandstone, eastern

Colorado: Darton, 13. Water, Denver wells: Clarke, F. W.,

9; Emmons, Cross, and Eldrldge, 2;

Foster, E. L., 1. Water, Good Hope mine: Rickard, T.

A., 23. Water, Idaho Springs, Stanley mine:

Clarke, F. W., 9. Water, mineral springs: Clarke, F. W.,

9; Chauvenet, 7; Cross, Howe, and

Irving, 1; Emmons, 24; Endlich, 4;

Hayden, 6; Headden, 6, 14; Jones,

L. J. W., 1 ; Lakes, 23 ; Lee, H. A., 1,

9; Lowther and Knowles, 1; Peale,

1, 3, 15; Smith, J. A., 1; Stevenson,

3; Strieby, 1.

Water, San Luis Valley: Fleck, 1;

Headden, 13; Siebenthal, 4. Water, spring: Eakins, 5; Fisher, 1;

Gale, 5; Lee, H. A., 9; Spurr, 1;

Spurr, Garrey, and Ball, 1. Water, Sterling: Sllchter and Wolff, 1. Water, Steamboat Springs: Lowther

and Knowles, 1.

Water, White river: Gale, 6.

Water: Headden, 4.

Wheelerite: Endlich, 6.

Witherite: Ohly, 2.

Wolframite: Bkeley, 1; George, 3.

Xenotime: Penfleld, 6.

Zircon: Endlich, 6; Hillebrand. 4.

Zinkenite: Clarke, F. W., 6; Cross and Hillebrand, 4; Hillebrand, 2.

Zunyite: Clarke, F. W., 6; Cross and Hillebrand, 4; Hillebrand, 3; Pen- field, 6; Ransome, 3.

Minerals Described

(See also lists of Colorado minerals in Dana, E. S., 8; Endlich, 1, 3, 4, 5, 6; Frazer, 1; Hollister, 1; Randall, J. S., 1; Smith, J. A., 1.)

Acanthite: Chester, 1.

Actinolite: Crawford, 4; Hollister, 1.

Aegirine: Lindgren and Ransome, 3.

Agate: Hollister, 1; Sterrett, 2.

Alabandite: Patton, 10; Smith, W. B.,

Alabaster: Hollister, 1.

Alaskaite: Am. Jour. Sci., 1; Lewis, H. C, 1.

Albertite: Cross, 5; Denton, 1; Knee- land, 1; Koenig, 4.

Albite: Lindgren and Ransome, 3; Smith, W. B., 1.

Allanite: Eakins,!; Iddings and Cross, 1; Ransome, 5.

Altaite: Cross, 5; Genth, 1, 2.

Alum: Hollister,!.

Alumina: Kedzie, 1.

Alunite: Butler and Gale, 1; Cross, 16;

Cross and Spencer, 1; Eakins, 9;

Hurlburt, 1 ; Larsen, 2 ; Lindgren and

Ransome, 3; Ransome, 3.

Alunogen : Headden, 6 ; Hobbs, 2.

Amazonstone: Hollister, 1; Lakes, 75; Peale, 5.

Amethyst: Hollister,!.

Ammonium oxide: Kedzie,!.

Amphibole: Cross, 14; Graton, 1; Min. Mag., 1; Ransome, 5.

Analcite : Clarke and Steiger, 1 ; Cross, 5; Cross and Hillebrand, 4; Graton, 1 ; Lakes, 6 ; Lindgren and Ransome, 3; Patton, 4.

Andradite: Crawford, 4; Patton, 10. Anglesite: Crawford, 3, 4; Patton, 10. Anhydrite: Hollister,!. Anorthite: Lindgren and Ransome, 3.

Lists

Minerals De8Cr

Antimony: Cross and Penrose, 1; Hol- lister, 1.

Antunlte: Lakes, 143.

Apatite: Lindgren and Ransome, 3;

Ransome, 5. Apophyllite: Cross, 5; Cross and Hille-

brand, 2, 4; Lake6, 6; Patton, 4. Aquamarine : Cross, R. T., 1 ; Hollister,

Aragonite: Patton, 4; Min. Mag., 1. Arfvedsonite: Cross, 6; Koenig, lb;

Lindgren and Ransome, 3; Min.

Mag., 1. Argentite: Crawford, 4; Cross and

Howe, 1; Cross and Ransome, 1;

Lakes, 6; Patton, 10; Ransome, 2, 3;

Van Horn, 1, 2. Arsenic : Hollister, 1. Arsenopyrite: Irving and Bancroft, 1;

Lakes, 143. Asbestos: Crawford, 4; Hollister, 1. Asphaltum: Lee, H. A., 2. Astrophyllite : Cross, 6; Eakins, 8;

Min. Mag., 1. Atacamite: Lakes, 143. Augite: Cross, 11; Lindgren and Ran- some, 3. Augite and diopside: Ransome, 5. Aventurine quartz: Hollister, 1. Azurite: Crawford, 3, 4; Hollister, 1;

Lakes, 143; Patton, 10; Ransome, 6. Barite: Crawford, 4; Cross, 5; Cross

and Howe, 1 ; Cross and Ransome, 1 ;

Hollister, 1 ; Irving and Bancroft, 1 ;

Kemp, 1 ; Lindgren and Ransome, 3 ;

Patton, 10; Ransome, 2, 3, 5. Bastn&site: Allen and Comstock, 1;

Cross, 5; Hidden, 3; Hillebrand, 8,

10; Kunz, 2; Min. Mag., 1. Beegerite: Cross, 5; Konig, 2; Min.

Mag., 1. Bertrandite: Penfield, 2, 3. Beryl: Hills, R. C, 12; Hollister, 1;

Penfield, 4. Beryllium minerals: Penfield, 4. Biotite: Cross, 5; Lewis, 1, 2; Lind- gren and Ransome, 3 ; Ransome, 5. Bismuth: Irving and Bancroft, 1; Mg.

Rev., 6.

I BED— Continued

Bismuthinite: Cross and Howe,l; Ran- some, 3, 5.

Bismuthite: Cross, 5; Genth, 2.

Bloodstone: Hollister, 1.

Blue vitrol : Hollister, 1.

Bole: Cross and Hillebrand, 4.

Bornite : Crawford, 4 ; Cross and Howe, 1 ; Patton, 10 ; Pearce, 2 ; Ransome, 3.

Bournonite: Cross and Howe,l; Lakes, 143; Ransome, 3.

Brochantite: Cross, 5.

Cairngorm stone: Hollister, 1.

Calamine: Clarke, F. W., 9; Crawford,

3, 4; Farrington and Tillotson, 1; Grabill, 1.

Calaverite: Hillebrand, 7, 10 ; Lindgren and Ransome, 3; Penfield, 7; Pen- field and Ford, 1; Rickard, T. A., 16; Smith, G. F. H., 1.

Calcareous spar: Hollister, 1.

Calcite: Crawford, 3, 4; Cross and Hillebrand, 4 ; Cross, Howe, and Ran- some, 1 ; Cross and Penrose, 1 ; Cross and Ransome, 1; Headden, 7, 11; Lindgren and Ransome, 3; Patton,

4, 10 ; Purington, 2 ; Ransome, 2, 3, 5. Calcium sulphate: Kedzie, 1. Carnelian: Hollister, 1.

Carnotite: Blanc, 1; Clarke, F. W., 9; Fleck and Haldane, 1, 2; Gale, 2, 6; Hess, 4; Hillebrand and Ransome, 1, 2; Mg. World, 2, 3; Ohly, 1, U;

W , C. H., 3. See also Uranium

in general index.

Cassiterite: Smith, W. B., 1.

Celesite: Cross, 5; Lindgren and Ran- some, 3.

Cerargyrite: Crawford, 4; Lakes, 5, 21; Patton, 10.

Cerussite: Briusmade, 1; Crawford, 3, 4; Lakes, 5, 21, 143; Patton, 10; Ran- some, 5; Warren, C. H., 1.

Ceylonite (spinel) : Read, 1.

Chabazite: Cross, 5; Cross and Hille- brand, 4; Lakes, 6; Patton, 4.

Chalcanthite : Lakes, 143; Lindgren and Ransome, 3; Patton, 10.

Chalcedony: Hollister, 1; Lindgren and Ransome, 3; Patton, 1.

MINERALS DESCRIBED— Continued

Chalcocite: Crawford, 3, 4; Cross and Howe, 1; Irving and Bancroft, 1; Lindgren and Ransome, 3 ; Ransome,

Chalcopyrite : Crawford, 3, 4; Cross, Howe, and Ransome, 1; Cross and Ransome, 1 ; Hollister, 1 ; Irving and Bancroft, 1; Lindgren and Ransome, 3; Patton, 10; Ransome, 2, 3.

Chlorite: Crawford, 4; Cross and Ran- some, 1; Hollister, 1; Lindgren and Ransome, 3; Ransome, 2, 5.

Chloropal: Lindgren and Ransome, 3.

Chromite: Lakes, 143; Patton, 10.

Chrysocolla: Crawford, 4; Hollister,!;

Lakes, 143; Lindgren and Ransome,

3; Ransome, 5. Chrysoprase: Hollister, 1. Cinnabar: Lindgren and Ransome, 3. Coal : Lindgren and Ransome, 3.

Coloradoite: Cross, 6; Dana, E. S., 1; Genth, la; Hillebrand, 9; Rickard, T. A., 16.

Columbite: Cross, 5; Headden, 6; Min. Mag., 1; Smith, J. L., 3; Smith, W. B., 1.

Copper: Crawford, 3, 4; Cross and

Ransome, 1; Cross and Penrose, 1;

Hollister, 1 ; Lindgren and Ransome,

3; Patton, 10; Purington, 2; Ran-

,some, 2, 3.

Copper carbonates: Lakes, 21.

Copper, gray. See tetrahedrite.

Corundum: Finlay, G. T., 2; Pratt, 1.

Cosalite: Cross, 5; Cross and Hille- brand, 4; Hillebrand. 1; Pearce, 3.

Crocoite: Lakes, 143.

Cryolite: Cross, 5; Cross and Hille- brand, 4; Halland, 1; Ohly, 2.

Cuprite: Crawford, 3. 4; Patton, 10.

Cyrtolite: Genth, 1.

Danalite: Genth, 1.

Derbyshire spar: Hollister,!.

Diallage: Lindgren and Ransome, 3.

Diaspore: Cross, 16; Eakins. 9; Mel- ville, 1.

Diopside: Crawford, 4.

Diopside and augite: Ransome, 5.

Dolomite: Crawford, 3, 4; Cross, Howe, and Ransome, 1; Lindgren and Ran- some, 3; Patton, 5; Ransome, 3.

Dolomite and calcite: Irving and Ban- croft, 1.

Domingite: Eakins, 2.

Dumortierite: Finlay, G. I., 2.

Egeran: Hollister, 1.

Elaterite: Weston, 4.

Elpasolite: Cross and Hillebrand, 4.

Embolite: Cross, 5.

Emerald : Hollister, 1.

Emmonsite: Hillebrand, 12, 13; Lind- gren and Ransome, 3.

E!mpressite: George, 6.

Enargite: Burton, 1; Cross, 5; Craw- ford, 4; Cross, Howe, and Ransome, 1; Cross and Ransome, 1; Headden, 6; Patton, 10; Plrsson, 1; Ransome, 3; Spencer, L. J., 1.

Epidote: Cross and Ransome, 1; Hol- lister, 1 ; Ransome, 5 ; Smith, W. B.,

Epsomite: Hobbs, 2; Lindgren and Ransome, 3.

Erubescite: Hollister, 1.

Evansite: Min. Mag., 1.

Fayalite: Hidden, 1; Hidden and Mack- intosh, 1.

Feather alum: Bailey, 1.

Ferberite : George, 3.

Ferrotellurite: Dana, E. S., 1; Min. Mag., 1.

Fluorite: Crawford, 4; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Cross and Ransome, 1; Lindgren and Ransome, 3; Patton, 10; Puring- ton, 2; Ransome, 2; Smith, W. B., 1.

Fluorite: Crawford, 4; Lakes, 21; Ran- some, 3.

Gadolinite: Eakins, 1; Patton, 10.

Gahnite: Crawford, 4.

Galena: Crawford, 3, 4; Cross, Howe, and Ransome, 1 ; Cross and Ransome, 1; Irving and Bancroft, 1; Lakes, 21, 143; Lindgren and Ransome, 3; Pat- ton, 10; Ransome, 2, 3.

Lists

Minerals Descr

Garnet: Bailey, Rath, and Grider, 1; Crawford, 4; Cross, 8; Cross and Ransome, 1; Hollister, 1; Min. Mag., 1; Penfield and Sperry, 1; Ransome, 5; Smith, W. B., 2.

Gearksutite: Cross, 3, 5; Cross and Hillebrand, 4.

Gilsonite: Weston, 4.

Glockerite: Lindgren and Ransome, 3.

Goethite: Cross, 5.

Gold: Crawford, 4; Cross, 5; Cross, Howe, and Ransome, 1; Cross and Ransome, 1; Eilers, 3; Irving and Bancroft, 1; Lindgren and Ransome, 3; Patton, 10; Ransome, 2, 3, 5.

Gold (crystals): Hollister, 1; Lakes,

Gold (wire): Mg. Sci., 5. Goldschmidtite : Hobbs, 1 .

Groslarite: George, 5.

Grahamite: Newberry, 10; Wurtz, 1.

Graphite: Bastin. 1; Ihne, 1.

Greenockite: Crawford, 4.

Guitermanite : Cross, 5; Cross and Hillebrand, 4 ; Cross, Howe, and Ran- some, 1; Hillebrand, 3; Ransome, 3.

Gypsum: Cross and Penrose, 1; Cross and Ransome, 1; Hollister, 1; Lind- gren and Ransome, 3; Patton, 10; Ransome, 2.

Halotrlchite: Bailey, 1, 2.

Heliotrope: Hollister, 1.

Hematite: Crawford, 3, 4; Cross, Howe, and Ransome, 1; Patton, 10; Ran- some, 3, 5; Smith, W. B.. 1.

Hessite (auriferous): Cross, 5; Genth, la; Palache, 1; Silliman, 1.

Heulandite: Eakins, 9.

Hinsdalite: Irving and Bancroft, 1; Larsen and Schaller, 1.

Hornblende: Lindgren and Ransome, 3; Min. Mag., 1.

Hiibnerite: Cross, 5; Cross, Howe, and Ransome, 1; Cross and Hillebrand, 4 ; Genth, 2; George, 3; Hillebrand, 1; Lindgren and Ransome, 3 ; Ransome,

Hyalite: Hollister,!.

I BED— Continued

Hydrophane: Church, A. H., 1; Kunz,

Hypersthene: Ransome, 5.

Idocrase: Hollister, 1.

Ilesite: Am. Jour. Sci., 1; lies. 1.

Ilsemannite: Lindgren and Ransome,

Jamesonite: Patton, 10.

Jarosite: Cross, 6; Genth, la; Koenig,

Jasper: Hollister,!.

Kaolin: Patton, 10.

Kaolinite: Cross, 5; Cross and Hille- brand, 4 ; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Cross and Ransome, 1; Dana, E. S., 6; Hills, R. C, 5; Lindgren and Ransome, 3; Milch, 1; Ransome, 2, 5.

Kobellite: Kellar, 1; Min. Mag., 1.

Krennerite: Chester, 2; Genth, la; Lindgren and Ransome, 3.

Labradorite: Hunt, 1; Lindgren and Ransome, 3; Ransome, 5.

Laumontite: Cross, 5; Cross and Hille- brand, 4; Lakes, 6; Patton, 4.

Lavenite: Graton, 1.

Lead: Cross and Hillebrand, 4.

Levynite: Cross and Hillebrand, 4.

Limonite: Crawford, 3, 4; Cross, 5; Lakes, 143; Lindgren and Ransome, 3; Patton, 10; Ransome, 5; Smith, W. B., 1.

Lollingite: Cross, 5; Cross and Hille- brand, 4; Hillebrand, 1.

Magnetite: Crawford, 3, 4; Lindgren and Rasome, 3; Patton, 10; Ransome, 3; Patton, 10; Ransome, 2, 5; Sne- daker, 2.

Magnolite: Dana, E. S., 1; Genth, la; Min. Mag., 1.

Malachite: Crawford, 3, 4; Hollister, 1; Lakes, 5, 143; Patton, 10; Ran- some, 5.

Mallardite: Lindgren and Ransome, 3.

Manganese: Chauvenet, 8; Crawford, 4; Cross and Penrose, 1; Hollister, 1; Lakes, 143.

Lists

MINERALS DESCRIBED— Continued

Manganif erouB iron ores : Weeks, J. D.,

Manganiferous silver ores: Weeks, J. D., 5.

Manganite: Smith, W. B., 2.

Marcasite: Lindgren and Ransome, 3.

Mariposite: Hess, 4.

Melanterite: Patton, 10.

Melonite: Cross, 5; Hillebrand, 2, 9.

Mercury: Lakes, 174.

Mesolite: Cross, 5; Cross and Hille- brand, 2, 4; Lakes, 6; Patton, 4.

Meteoric iron: Headden, 12.

Mica: Clarke, F. W., 2, 3; Hollister, 1; Purington, 2; Schwarz, 4.

Microcline: Cross, 5; Koenig, la; Lindgren and Ransome, 3; Ransome, 5; Smith, W. B., 1.

Mimetite: Crawford, 3; Patton, 10.

Minium: Hawkins,!.

Mirabilite: Lindgren and Ransome, 3.

Molybdenite: Crawford, 4; Cross, Howe, and Ransome, 1; Hollister, 1; Lindgren and Ransome, 3; Ransome, 3; Schaaf-Regelman, 1; Schaller, 2; Sebben, 1.

Molybdite: Crawford, 4; Schaller, 4.

Monazite: Schaaf-Regelman, 1.

Morencite: Lindgren and Ransome, 3.

Muscovite: Lindgren and Ransome, 3; Ransome, 5; Smith, W. B., 1.

Natrolite: Cross and Hillebrand, 4; Lakes, 6; Lindgren and Ransome, 3.

Natron : Headden, 13.

Nepheline: Lindgren and Ransome, 3.

Niccolite: Cross, 5.

Nosean: Lindgren and Ransome, 3.

Oligoclase: Lindgren and Ransome, 3.

Olivine: Lindgren and Ransome, 3.

Onyx: Hollister,!.

Opal: Hollister, 1; Lindgren and Ran- some, 3; Patton, 1.

Orthoclase: Lindgren and Ransome, 3; Purington, 2; Ransome, 6.

Ozokerite: Ohly, 6.

Pachnolite: Cross, 3, 5; Cross and Hillebrand, 4.

Palladium: Headden, 6.

Pearceite: Penfleld, 8.

Petzite: Ellers, 3; Genth, la; Hille- brand, 9; Lindgren and Ransome, 3; Rickard, T. A., 16.

Phenaolte: Cross, 5; Cross and Hille- brand, 4; Hidden, 12; Penfield, 1, 4; Penfleld and Sperry, 2; Smith, W. B.,

1, 2.

Phosgenite: Warren, C. H., 1.

Picrotitanite: Whitaker,l.

Pitchblende. See Uranium.

Platinum : Kemp, 3.

Polybasite: Cross, Howe, and Ran- some, 1; Lakes, 5, 21, 143; Penfield, 8; Penfleld and Pearce, 1; Ransome,

2, 3.

Prosopite: Cross, 6; Cross and Hille- brand, 3, 4; Hillebrand, 8.

Proustite: Cross, Howe, and Ransome, 1 ; Irving and Bancroft, 1 ; Patton, 10 ; Ransome, 2, 3; Van Horn, 1, 2.

Psilomelane: Clarke, F. W., 9; Craw- ford, 3, 4; Lindgren and Ransome, 3; Patton, 10.

Ptilolite: Clarke, F. W., 4; Cross and Eakins, 1, 2; Dana, E. S., 5, 7.

Pyrargyrite: Irving and Bancroft, 1; Patton, 10.

Pyrite: Ayres, 1; Crawford, 3, 4 ; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Cross and Ransome, 1; Irving and Bancroft, 1; Kraus and Scott, 1; Lakes, 6, 21, 143; Lindgren and Ransome, 3; Patton, 10; Puring- ton, 2; Ransome, 2, 3, 5; Schaller, 1; Smith, W. B., 2; Spurr, Garrey, and Ball, 1.

Pyroluslte: Crawford, 3, 4; Patton, 10.

Pyromorphite : Patton, 10.

Pyroxene: Cross, 1, 14; Cross and Ran- some, 1.

Pyrrhotite: Crawford, 4.

Quartz: Crawford, 3, 4; Cross, 5; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Cross and Ransome, 1; Grabill, 1; Irving and Bancroft, 1; Lindgren and Ransome, 3; Patton, 10; Purington, 2; Ransome, 2, 3, 6; Smith, W. B., 1; Tassln, 1.

Quartz (smoky) : Peale, 5.

Lists

MINERALS DESCRIBED— Continued

Ralstonite: Cross, 5; Cross and Hille- brand, 4.

Rhodochrosite: Cross, 5; Cross and Ransome, 1; Dana, E. S., 6; Irving and Bancroft, 1; Kunz, 1; Lindgren and Ransome, 5; Patton, 10; Ran- some, 2, 3.

Rhodonite: Ransome, 3.

Rickardite: Ford, 1, 2.

Riebeckite: Clarke and Steiger, 2; Murgoci, G. M., 1.

Roscoelite: Genth, la; Henahen, 1; Hillebrand and Ransome, 2; Lind- gren, 6, 9; Lindgren and Ransome, 3; Min. Mag., 1.

Rosin, mineral: Hollister, 1.

Ruby silver: Lakes, 6.

Rutile: Genth, 1; Lindgren and Ran- some, 3; Smith, W. B., 2.

Sanfordite: Ores and Metals, 6a.

Sanidine: Cross, 4, 6.

Sapphire: Smith, W. B., 2.

Sardonyx: Hollister, 1.

Scheelite: George, 3; Mg. Rept., 14.

Schirmerite: Cross, 5; Genth, la.

Schorlomite: Koenig, 1.

Scolecite: Cross and Hillebrand, 4;

Lakes, 6. Selenite: Gale, 6. Selenium : Ohly, 3.

Sericite: Cross and Ransome, 1; Ran- some, 2. Serpentine: Crawford, 4; Emmons, 9;

Hollister, 1; Lindgren and Ransome,

3; Patton, 10. Siderite: Lakes, 5; Patton, 10; Pur-

ington, 2; Ransome, 5. Siderophyllite: Cross, 5; Lewri, H. C,

la. Silver: Crawford, 4; Cross, Howe, and

Ransome, 1; Cross, 6; Cross and

Ransome, 1; Patton, 10; Ransome,

2, 3, 5. Smaltite: Cross, 5; lies, 2; Min. Mag.,

1; Smith, W. B., 1. Smithsonite: Crawford, 3, 4 ; Grabill, 1;

Ransome, 5. Sodalite: Lindgren and Ransome, 3.

Specularite : Cross and Ransome, 1; Lindgren and Ransome, 3 ; Ransome,

Sphalerite: Crawford, 3, 4; Cross, Howe, and Ransome, 1; Cross and Ransome, 1; Irving and Bancroft, 1; Lakes, 6, 21; Ransome, 2, 3, 6.

Spinel (ceylonite) : Read, 1.

Staffelite: Min. Mag., 1.

Stephanite: Crawford, 4; Lakes, 5; Patton, 10; Ransome, 2.

Stibnite: Cross, Howe, and Ransome, 1; Lakes, 6; Lindgren and Ransome, 3; Patton, 10; Ransome, 3.

Stilbite: Cross, 5; Cross and Hille- brand, 4; Lindgren and Ransome, 3; Patton, 4.

Stromeyerite : Cross, Howe, and Ran- some, 1; Pearce, 2; Ransome, 3.

Sulphantimonites: Eakins, 2.

Sulphobismuthites: Cross, Howe, and Ransome, 1; Ransome, 3.

Sulphur: Ransome, 5.

Sylvanite: Blake, lb; Clarke, F. W., 9 Cross, 5; Davis, W. H., 1; Genth, la Lindgren and Ransome, 3 ; Moses, 2 Palache, 1; Penfield, 7; Rickard, T. A., 8, 16; Silliman, 1.

Tantalum: Schaaf-Regelman, 1.

Tellurite: Cross, 5; Genth, 1, 2.

Tellurium : Cross, 5 ; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Dana, E. S., 1; Genth, la; Grabill, 1; Headden, 3; Hess, 1; Hillebrand, 13; Hillebrand and Allen, 1; Irving and Bancroft, 1; Jennings, 1; Kemp, 2; Lakes, 25, 56, 61, 174; Lindgren, 7; Lindgren and Ransome, 3; Marvine, 1; Mg. Rev., 6; Ohly, 3; Palache, 1; Pearce, 11; Ransome, 3; Schaller, 1;

Sharwood, 1; Silliman, 1; W , C.

H., 2.

Tennautite: Crawford, 4; Patton, 10; Penfield and Pearce, 1.

Tenorite: Crawford, 3, 4.

Lists

MINERALS DE8CR Tetradymite: Hillebrand, 13.

Tetrahedrite : Crawford, 4; Cross,

Howe, and Ransome, 1; Cross and

Ransome, 1; Grabill, 1; HoUister, 1;

Irving and Bancroft, 1; Lakes, 5, 21;

Lindgren and Ransome, 3; Patton,

10; Ransome, 2, 3. Thomsenolite: Cross, 5. Thomsonite: Clarke and Steiger, 2;

Cross, 5; Cross and Hillebrand, 4;

Lakes, 6; Patton, 4. Titanite: Ransome, 5. Titanium: Chauvenet, 3, 4, 8; Hayden,

14; Jennings, 2; Lindgren and Ran- some, 3; Putnam, 1; Schaaf-Regel-

man, 1; Singewald, 1, 2. Topaz: Cross, R. T., 2; Cross, 5, 8;

Cross and Hillebrand, 1, 4 ; Eakle, 1 ;

Min. Mag., 1; Penfield and Minor, X]

Smith, W. B., 1. Tourmaline: Lindgren and Ransome,

3; Min. Mag., 1; Patton, 3; Upham,

Tremolite: Crawford, 4. Tungsten minerals: Cooper, C. A., 1;

George, 3; Mg. Rept, 14; Ohly, 8;

Ransome, 3; Schaaf-Regelman, 1. Turgite: Crawford, 3, 4; Smith, W. B.,

Tysonite: Allen and Comstock, 1;

Cross, 5; Dana, E. S., 2; Hidden, W.

E., 3; Hillebrand, 8, 10; Kunz, 2;

Min. Mag., 1. Uraninite: Cross, 5; Hill, N. P., 1. Uranium minerals: Becke, 1; Blanc, 1;

E. and M. J., 27; Fleck, 3; Fleck and

Haldane, 1; Hill, N. P., 1; Hillebrand,

5; Hillebrand and Ransome, 1; Lee,

I BED — Continued

H. A., 7; Mines and Mining, 1; Mg. Rev., 2; Ohly, 1; Ohtegnot, 1; Ores and Metals, 7; Ross, 1; Schaaf- Regelman, 1; Tovote, 1.

Vanadium minerals: Fleck, 3; Fleck and Haldane, 1 ; Hillebrand and Ran- some, 1, 2; Mines and Mining, 1; Ross, G. M., 1; Schaaf-Regelman, 1.

Vandiestite: Pearce, 18.

Von Diestlte: B. Cumenge, 1.

Warrenite: Eakins, 2.

Wavellite: Lindgren and Ransome, 3.

Willemite: Randall, 1..

Wolframite: George, 3; Mg. Rept., 14; Moses, 1.

Wollastonite : Cross and Ransome, 1.

Wulfenite: Crawford, 3, 4; Lakes, 143.

Wurtzite: George 5.

Xenotime: Hidden, 1; Penfield, 6.

Zeolites: Cross and Hillebrand, 2, 4; Emmons, Cross, and Eldridge, 2; Lakes, 218; Marvine, 1.

Zinc blende: Crawford, 4; Lindgren and Ransome, 3; Weed, W. H., 1.

Zinc spinel: Crawford, 4.

Zinckenite: Cross, 5; Cross and Hille- brand, 4 ; Cross, Howe, and Ransome, 1; Hillebrand, 2; Patton, 10; Ran- some, 3.

Zircon: Cross, 5; Cross and Hille- brand, 1, 4; Genth, 1; Koenig, lb; Lindgren and Ransome, 3 ; Min. Mag., 1; Ransome, 5.

Zirconium: Schaaf-Regelman, 1.

Zunyite: Cross, 5; Cross and Hille- brand, 4 ; Cross, Howe, and Ransome, 1; Hillebrand. 3; Penfield, 6; Ran- some, 3.

Rocks Described

Adamellite gneiss: Spurr, Garry, and Ball.

Aegirine and aegirine-augite in phono- lite: Graton, 1.

Agglomerate: Larsen, 1. Alasklte phonolite: Spurr, Garrey, tmd Ball.

Alaskitic quartz monzonite porphyry: Spurr, Garrey, and Ball.

Alkali syenite porphyry: Clarke, F. W., 8; Mg. Sci., 2; Spurr, Garrey, and Ball.

Amphibole and hornblende schist: Pat- ton, 8.

Lists

Rocks De8Cri

Amphibolite: Cross, 14; Emmons, 2, 9. Analcite basalt: Cross, 28. Analcite in phonolite: Graton, 1. Andesite breccia: Clarke, F. W., 8; Cross, 24.

Andesite, hypersthene: Cross, 1.

Andesite porphyry: Crawford, 4; Grout, Worcester and Henderson, 1.

Andesite, sanidine-bearing: Cross, 12.

Andesite: Comstock, 7; Crawford, 2. 4; Conkling, 2; Cross, 24, 27; Cross, Howe, and Ransome, 1 ; Cross, Howe, and Irving, 1 ; Cross and Penrose, 1 ; Cross and Purington, 1; Emmons, 9; George and Crawford, 1 ; Hills, R. C, 15; Hogarty, 1; Irving and Ban- croft, 1; Kedzie, 1; Lakes, 18, 143; Larsen, 1; Patton, 8; Ransome. 5; Van Horn, 3. .

Anorthosite: Graton, 1.

Anthophyllite-epidote rock: Crawford,

Aplite: Crawford, 4; Cross, Howe, and Irving, 1; Patton, 10; Underbill, 4.

Aplitic granite: Clarke, F. W., 8.

Augite camptonite: Lee, H. A., 9.

Augite diorite: Cross, 12.

Augite granite porphyry: Hills, R. C,

Augite-homblende vogesite: Stose, 1.

Augite-mica syenite: Emmons, Cross, and EHdridge, 2.

Augite minette: Lee, H. A., 9.

Augite monzonite: Clarke, F. W., 8.

Augite syenite: Clarke, F. W., 8; Cross, Spencer, and Purington, 1.

Augite syenite porphyry: Cross and Penrose, 1.

Basalt: Comstock, 7; Conkling, 2; Crawford, 2 ; Draper, 1 ; Emmons, Cross, and Eldridge, 1, 2; Grout, Worcester, and Henderson, 1 ; Hills, R C, 15, 24, 25; Lakes, 21, 143; Stevenson, 8.

Basalt-llmburgite: Cross, 27.

Basalt, quartz-bearing: Iddings, 1.

Basic agglomerate: Cross, 24, 27.

Basic breccia: Cross, 24.

BED — Continued

Basic dike rock: Clarke, F. W., 8; Cross and Ransome, 1; Cross, Spen- cer, and Purington, 1; Cross and Spencer, 1; Miller, G. W., 1.

Binary granite: Underbill, 4.

Biotite aplite: Patton, 7.

Biotite diorite porphyrite: Patton, 10.

Biotite gneiss: Patton, 8. Howe, and Ransome, 1.

Biotite granite: Crawford, 4; Cross,

Biotite latite: Mg. Sci., 2; Spurr. Car- rey, and Ball, 1.

Biotite schist: Cross, Howe, and Irv- ing, 1; Spurr, Garrey, and Ball, 1.

Biotite-sillimanite schist: Crawford, 4; Spurr, Garrey, and Ball, 1.

Botonite: Mg. Sci., 2; Spurr, Garrey, and Ball, 1.

Breccia: Crawford, 4; Emmons, Cross and Eldridge, 1; Graton, 1; Grout, Worcester, and Henderson, 1; Lind- gren and Ransome, 3; Miller, G. W., 1 ; Rickard, T. A., 15.

Breccia, igneous: Patton, 8.

Breccia, West Elk: Lee. W. T., 13.

Bums andesite: Cross, 27.

Burns latite complex: Cross, Howe, and Ransome, 1; Cross, 43 (in Irv- ing and Bancroft, 1).

Cordierite hornfels: Crawford, 4.

Corundum in pegmatite: Finlay. G. I., 1, 2.

Dacite: Crawford, 2: Cross. 27; Spurr, Garrey, and Ball, 1; George and Crawford, 1.

Dacite porphyry: George and Craw- ford, 1; Grout, Worcester, and Hen- derson, 1.

Diabase: Crawford, 2; Cross, 1, 27; Cross, Howe, and Ransome, 1 ; Cross, Howe, and Irving, 1; Cross and Pen- rose, 1; Graton, 1; Patton, 7; Stose,

Diabase and syenite: Cross, 24.

Diorite: Ball, S., 1; Conkling, 2; Craw- ford, 4; Cross, 21, 23, 27; Cross, Spen- cer, and Purington, 1; Emmons, 9; Emmons, Cross, and Eldridge, 1; George and Crawford, 1 ; Lakes, 143 ; Patton, 8, 10; Spurr and Garrey, 1; Underbill, 4.

Lists

Rocks De8Cri

Diorite-monzonite: Cross and Purlng- ton, 1.

Diorite porphyrite: Patton, 10.

Diorite porphyry: Clarke, F. W., 8; Cross and Purington, 1 ; Cross, Spen- cer, and Purington, 1; Emmons, 27; Lee, H. A., 9; Spurr, 1.

Dolerlte: Conkling, 2; Emmons, Cross, and Eldridge, 2.

Dolomite: Spurr, 1.

Dolomitic quartzite: Spurr, 1.

Eolus granite: Cross, 41.

Epidote rock: Crawford, 4.

Eureka rhyolite: Cross, 43; Cross,

Howe, and Ransome, 1. Evergreenite: Ritter, 5. Felsite: Crawford, 2; Patton, 8. Feldspar basalt (tephrite): Stevens,

E. A., 2.

Floetz trap: James, 1. Fulgurite: Hills, R. C, 16. Gabbro: Cross, 41; George and Craw- ford, 1 ; Lakes, 1 43. Gabbro-diorite: Cross and Purington,

Gabbro porphyry: Clarke, F. W., 8. Garnet schist: Crawford, 4; Cross,

Howe, and Irving, 1. Glauconitic grit: Spurr, 1. Gneiss: Ball, S., 1; Cross, 27; Cross,

Howe, and Irving, 1; Emmons, 2, 9;

George, 3; Graton, 1; Patton, 10;

Spurr and Garrey, 1; Underbill, 4. Granite, Alma type: Patton, 10. Granite, Aspen type: Spurr, 1. Granite, Central City type: UnderhiU,

Granite, Crested Butte type: Emmons,

Cross, and Eldridge, 1. Granite, Cripple Creek type: Clarke,

F. W., 8; Graton, 1; Mathews, 1, 2; Rickard, T. A., 15.

Granite, Eolus: Cross, Howe, and Irv- ing, 1.

Granite, fine grained: Lakes, 18; Math- ews, 1, 2.

Granite, Georgetown type: Ball, 1 ; Spurr and Garrey, 1.

B E D — Continued

Granite, Monarch-Garfield type: Craw- ford, 3, 4.

Granite, Monarch-Tomichi type: Craw- ford, 4.

Granite, Montezuma type: Patton, 7.

Granite, Mosquito Range type: Em- mons, 9.

Granite, muscovite-blotite : Cross,

Howe, and Ransome, 1. Granite, Needle Mountains type:

Cross, Howe, Irving, and Emmons,

Granite, Pikes Peak type: Crosby, 1; Cross, 24; Lakes, 18; Mathews, 1, 2.

Granite, Rosalie: Spurr, Garrey, and Ball.

Granite, Resit a Hills type: Cross, 27.

Granite, Santa Fe type: Patton, 7.

Granite, Silver Plume type (corn gran- ite): Mg. Sci., 2.

Granite, Summit type: Mathews, 1, 2.

Granite, Tenmile type: Cross, Howe, and Irving, 1.

Granite, Trimble type: Cross, Howe, and Irving, 1.

Granite, Troutdale type: Underbill, 4.

Granite, Twilight type: Cross, Howe, and Irving, 1.

Granite, white: Henry, 1.

Granite, Whitehead type: Cross, Howe, and Irving, 1.

Granite: Conkling, 2; Cross and Pen- rose, 1; Emmons, 2; George, 3; Lakes, 143; Underbill, 4.

Granite-felsophyre: Hills, R. C, 15, 25.

Granite gneiss: Clarke, 8; Crawford, 4; Gunther, 1; Patton, 8; Spurr, Gar- rey, and Ball, 1.

Granite porphyry: Crawford,- 4; Cross, Howe, and Irving, 1; Hills, R. C, 25; Lee, H. A., 9; Spurr, Garrey, and Ball, 1.

Granitic breccia: Stone, 7.

Granodiorite: Cross, Howe, and Irv- ing, 1.

Greenstone: Howe, 1.

Henson tuff: Cross, 43; Cross, Howe, and Irving, 1.

Lists

ROCKS DESCRIBED— Continued

Hinsdale volcanic series: Cross, 43 (in Irving and Bancroft, 1).

Hornblende andesite: Van Horn, 3.

Hornbleude-biotite diorite porphyrite: Patton, 10.

Hornblende diorite porphyrite: Patton,

Hornblende gneiss: Patton, 7, 10; Spurr, Garrey, and Ball, 1.

Hornblende monzonlte porphyry: Cross and Ransome, 1; Cross and Spencer, 1.

Hornblende schist: Crawford, 4; Cross, Howe, and Ransome, 1.

Hornblende schist and amphibolite: Patton, 8.

Hornblendite: Crawford, 4; Spurr, Garrey, and Ball, 1.

Intermediate series: Cross and Puring- ton, 1.

Lacustrine sands: Hastings, 1.

Lamprophyre dike: Clarke, F. W., 8; Cross, 41; Cross, Howe, and Irving,

Lamprophyre: Clarke, F. W., 8; Craw- ford, 2; Hills, R. C, 15, 24, 25.

Latite: Clarke, F. W., 8; Crawford, 2, 3, 4; Cross, Howe, and Irving, 1; Clarke, F. W., 8.

Latite-phonolite: Clarke, F. W., 8; Mil- ler, G. W., 1.

Latite porphyry: Crawford, 2, 3, 4; George and Crawford, 1; Graton, 1; Underbill, 4.

Leucitophyre: Graton, 1.

Limburgite: Crawford, 2; Stevens, E. A., 1, 2.

Limestone, crystallized: Kedzie, 1.

Limestone, magnesian : Farish, 3.

Marble: Crawford, 4.

Mica andesite: Blake, J. C, 1.

Mica dacite: Cross, 27.

Mica schist: Clarke, F. W., 8; Craw- ford, 4.

Micaceous granite: Clarke, F. W., 8.

Minette : Stose, 1.

Monchiquite: Clarke, F. W., 8.

Monzonlte: Ball, 1; Cross, 41; Cross and Ransome, 1; Cross and Spencer, 1; Cross, Spencer, and Purington, 1.

Monzonite-diorite: Crawford, 4.

Monzonlte porphyry: Clarke, 8; Craw- ford, 4; Cross, 41; Hills, R. C, 15, 25 ; Patton, 8 ; Ransome, 5.

Nepheline basalt: Cross and Penrose,

1; Stevens, 2. Nepheline dolerite: Conkling, 2. Nepheline phonolite: Graton, 1.

Nepheline syenite: Cross and Penrose,

Olivine basalt: Clarke, 8; George and Crawford, 1; Grout, Worcester, and Henderson, 1.

Olivine-bearing augite vogesite: Stose,

Olivine-plagioclase basalt: Stose, 1.

Olivine syenite: Graton, 1.

Olivinitic marble: Crawford, 4.

Ophicalcite: Crawford, 4.

Pegmatite: Ball, S., 1; Finlay, G. I., 2 Crawford, 4; George, 3; Mg. Sci., 2 Patton, 8, 10; Spurr and Garrey, 1 Spurr, Garrey, and Ball, 1; Under- bill, 4.

Pegmatite, corundum-bearing: Finlay, G. I., 1, 2.

Peridotite: Cross, 11, 12, 27.

Phonolite: Cross, 10, 24; Cross and Penrose, 1; Graton, 1; Lakes, 143; Miller, G. W., 1.

Picayune andesite: Cross, Howe, and Ransome, 1.

Picayune volcanic group: Cross, 43 (in Irving and Bancroft, 1).

Pitchstone porphyry: Crawford, 4.

Plagioclase basalt: Cross and Pen- rose, 1; Lee, H. A., 9.

Porphyrite: Cross, 23; Emmons, 2, 9; Emmons, Cross, and Eldridge, 1.

Porphyritic biotite granite: Spurr, Gar- rey, and Ball, 1.

Porphyritic diorite: Emmons, Cross, and Eldridge, 1.

Porphyritic granite: Crawford, 4; Cross and Howe, 1.

Msts

Rocks De8Cri

Porphyritic lamprophyre: Clarke, F. W., 8.

Porphyry, Aspen type: Henrich, 2; Lakes, 2.

Porphyry, Bear Mountain type: Pat- ton, 7.

Porphyry, Calico Peak type: Cross and Ransome, 1 ; Cross and Spencer,

Porphyry, Georgetown type: Spurr and Garrey, 1.

Porphyry, granite: Patton, 7.

Porphyry, gray: Emmons, 9.

Porphyry, Grayback type: Patton, 8.

Porphyry, green: Eramons, 9.

Porphyry, Hahns Peak type: George and Crawford, 1.

Porphyry, Leadville or White: Em- mons, 3, 9; Gale, 1 ; Julien, 1; Ikes, 5, 21; Patton, 10.

Porphyry, Lincoln: Emmons, 9; Pat- ton, 10.

Porphyry, Monarch-Garfield: Craw- ford, 3.

Porphyry, Mosquito: Emmons, 9.

Porphyry, Mount Zion: Emmons, 9.

Porphyry, Sacremento: Emmons, 9.

Porphyry, Silverheels: Emmons, 9.

Porphyry, Silverton type: Cross and Howe, 1.

Porphyry: Emmons, 2; Lakes, 5, 143; Patton, 7.

Potosi volcanic series: Cross, Howe, and Ransome, 1; Cross, Howe, and Irving, 1; Cross and Purington, 1; Cross, 43 (in Irving and Bancroft, 1).

Pringle andesite: Cross, 27.

Pronolite (phonolite): Lakes, 18.

Propylite: Comstock, 7.

Prowersose (syenite lamprophyre) : Cross, 34.

Pyritiferous porphyry: Emmons, 9.

Pyroxene andesite: Clarke, P. W., 8; Cross, Howe, and Ransome, 1 ; Cross, Howe, and Irving, 1.

Pyroxene-hornblende andesite: Clarke, F. W., 8.

Pyroxene latite: Cross, 43 (in Irving and Bancroft, 1).

D — Continued

Pyi'oxene monzonite porphyry: Cross and Ransome, 1.

Pyroxene: Crawford, 2.

Quartz basalt: George and Crawford.

Quartz-biotlte diorite: Patton, 10.

Quartz-biotite latite: Clarke. F. W., 8.

Quartz diorite: Crawford, 4; Larsen, 1; Mg. Sci., 2; Spurr, Garrey, and Ball, 1.

Quartz diorite porphyrlte: Patton, 10.

Quartz gneiss: Spurr, Garrey, and Ball, 1.

Quartz-hornblende diorite: Patton, 10.

Quartz latite: Clarke, F. W., 8; Grout, Worcester, and Henderson, 1; Irv- ing and Bancroft, 1; Larsen, 1.

Quartz latite porphyry: Crawford, 4.

Quartz monzonite: Clarke, F. W., 8; Crawford, 3, 4; Cross, Howe, and Ransome, 1; Cross, Howe, and Irv- ing, 1.

Quartz monzonite gneiss: Crawford, 4; Mg. Sci., 2; Irving and Bancroft, 1; Ransome, 5; Spurr, Garrey, and Ball.

Quartz monzonite porphyry: Clarke, F. W., 8; Crawford, 3, 4; Lee, W. T., 13; Patton, 10; Spurr, Garrey, and Ball, 1.

Quartz porphyry: Cross, 23; Gunther. 1; Lakes, 21; Palmer, 1; Palmer and Fulton, 1; Patton, 8; Spurr, 1.

Quartz-pyroxene latite: Clarke, F. W..

Quartz trachyte: Cross, 41.

Quartzite: Crawford, 4; Cross. Howe, and Irving, 1; Cross and Spencer, 1; Kedzie, 1.

Quartzite, lower: Emmons, 9; Kedzie,

Quartzite, Parting: Emmons, 9, 27;

Spurr, 1.

Quartzite, pink: Kedzie, 1. Riebeckite granite: Clarke, F. W., 8. Riebeckite rocks: Murgoci, 1.

Lists

Rocks De8Cri

Rhyolite: Clarke, F. W., 8; Comstock, 7; Crawford, 4; Cross, 8, 12, 23, 24, 27; Cross, Howe, and Ransome, 1; Cross, Howe, and Irving, 1; Cross and Penrose, 1 ; Cross and Purington, 1; Emmons, 9, 27; Emmons, Cross, and Eldridge, 1; George and Craw- ford, 1; Irving and Bancroft, 1; Graton, 1 ; Lakes, 18, 21, 143 ; Miller, G. W., 1; Stevenson, 8.

Rhyolite porphyry: Crawford, 4.

Rhyolitie vitrophyre: Clarke, F. W., 8.

Sandstone: James, 1.

Sandstone dike rock: Cross, 25.

Sanidine rhyolite: Cross, 6.

San Juan tuff: Cross, Howe, and Irv- ing, 1; Cross, Howe, and Ransome, 1; Cross and Purington, 1; Cross, 43 (in Irving and Bancroft, 1).

Schist: Berg, 1; Cross, 20; Cross, Howe, and Ransome, 1; Cross and Penrose, 1; Graton, 1; Howe, 1; Grout, Worcester, and Henderson, 1 ; Patton, 10.

Silverton volcanic series: Cross, Howe, and Ransome, 1; Cross, 43 (in Irving and Bancroft, 1).

Sodalite phonolite: Graton, 1.

Smoky-quartz granite: Crawford, 4.

Spherulites: Cross, 15; Patton, 2.

Syenite: Clarke, F. W., 8; Cross, 12, 27; Crawford, 4; Graton, 1; Miller, G. W., 1.

D — Continued

Syenite gneiss: Gunther, 1.

Syenite porphyry: Cross, Spencer, and Purington, 1.

Titanite phonolite: Graton, 1.

Topaz rhyolite: Cross, 8.

Tourmaline and tourmaline schists :

Upham, 2. Trachorheites: Endlich, 1, 7; Peale,

7, 8.

Tra&ydolerlte: Clarke, F. W., 8; Gra- ton, 1; Lindgren and Ransome, 3.

Trachyte: Breed, 1; Clarke, F. W., 8; Comstock, 7; Conkling, 2; Cross, 12, 24, 27; Draper. 1; Lakes, 18, 21, 143; Miller, G. W., 1 ; Pearce, 1 ; Steven- son, 8.

Trachytic phonolite: Cross and Pen- rose, 1.

Tuff and breccia: Cross and Penrose,

Tuff, Burns: Cross, Howe, and Irving,

Tuff, Florissant: Wadsworth, 1.

Tuff, Henson: Cross, Howe, and Irv- ing, 1.

Twilight granite: Cross, 41. Vanadiferous sandstone: Hess, 4. Vogesite: Clarke, F. H., 8; Graton, 1;

Lee, H. A., 9. Volcanic breccia: Crawford, 4. Volcanic rocks: King, 1.

Geological Formations Grouped According To Age

(R. D. George.)

Where difference of opinion exists as to the age of formations, they are listed in two or more groups. In the less probable age groups the names are in parentheses.

Cenozolc

Quaternary (see Quaternary in the gen- Quaternary. — Continued.

Alluvial deposits.

Alluvium.

(Bishop Mountain Conglomerate.)

(Browns Park.) Wash beds.

Dune sand. (Wyoming Conglomerate.)

Glacial or Lake beds. Loess.

Lists

GEOLOGICAL FORMATIONS GROUPED ACCORDING TO AGE— Continued

Cenozoic — Continued

Tertiary:

Alamosa.

Alnwick.

Amyzon.

Animas.

Arapahoe.

Arikaree.

Bad Lands group.

Bishop Mountain Conglomerate.

Bitter Creek.

Bridger.

Browns Park.

Brule.

Castle Conglomerate.

Castle Rock Conglomerate.

Ceratops beds.

Chadron.

Cuchara.

Dawson Arkose.

Denver.

Florissant.

Fort Union.

High Park.

Gallisteo.

Green River.

Horsetail Creek.

Huerfano.

Lacustrine (Scott, W. B., 3).

Lake beds, in part.

Loup Fork.

Loup River.

Tertiary, — Continued.

Mauvaises Terres (White River)

Middle Park.

Monument Creek.

Niobrara of King.

Nussbaum.

Ogalalla.

Ohio.

Ohio Creek.

Pawnee Creek.

Pliocene.

(Point of Rocks).

Poison Canyon.

Post-Laramie.

Puerco.

Puerco Marl.

Ruby.

San Juan.

San Miguel.

Santa Fe.

Shoshone.

Telluride.

Titanotherium beds.

Uinta.

Vermilion Creek.

Wasatch (Wahsatch).

Washakie.

White River.

Wind River.

Wyoming Conglomerate.

Mesozolc

Cretaceous :

(Animas beds.)

Apishapa.

(Arapahoe.)

(Bad Lands group.)

Benton.

(Bitter Creek.)

Bowie.

Carlile.

(Ceratops beds.)

Colorado.

Comanche.

(Cuchara.)

Dakota.

Qreiaceous. — Continued.

(Denver.)

Escarpment sandstone.

Fox Hills.

Graneros. .

Greenhorn.

Halymenites.

Hell Creek.

Henrys Fork.

(Huerfano.)

Hygiene.

Judith River.

Laramie.

Lewis.

Lists

GEOLOGICAL FORMATIONS GROUPED ACCORDING TO AG E— Continuel

Mesozoic — Continued

Cretaceous. — Continued.

Lignitic. Mancos. Mesaverde. (Middle Park.) Montana.

(Monument Creek.) (Morrison.) Niobrara.

(Ohio and Ohio Creek.) Paonia. Pictured Cliff. Pierre. Platte series. Point of Rocks. (Poison Canyon.) Purgatoire. Rollins.

(Ruby and Ruby Creek.) Salt Wells. Sulphur Creek. . Tepee zone (Pierre). Timpas. Trinidad. Trout Creek. Twenty Mile. Vermejo.

Jurassic: Atlantosaurus beds. Baptonodon beds. Flaming Gorge. Gunnison. La Plata. McElmo.

Mariposite Sandstone. Morrison. Red Beds, in part. Sauranodon. Saurian Conglomerate. Saurian Sandstone. Sundance. White Cliff.

Triassic: Chugwater, possibly upper part. Dolores.

Lykins, possibly upper part. Red Beds, in part. Shinarump, in part. Upper Wyoming, possibly upper

part. Vermilion Cliff. Wyoming, possibly part of the

Upper Wyoming.

Paleozoic

Permian :

Chugwater, lower part, possibly all.

Crinkled Sandstone, probably.

Cutler.

Jaque Mountain.

Kangaroo, probably Permo-Pennsyl- vanian.

Lykins, lower part.

Maroon, upper may be Permian.

Permo-Carboniferous of King, and in part the Permo-Carboniferous of other early writers.

Red Beds.

Rico.

Shinarump, in part.

Upper Carboniferous of Hay den geol- ogists and other early workers, in part.

Upper Wyoming, in large part.

Wyoming, part of Upper Wyoming.

Pennsylvanian {Upper Carboniferous) : Arkansas Sandstone.

Aubrey.

Badito.

Carboniferous (undivided) of earlier writers, in part.

Casper.

Coal Measures (Carboniferous). The same name has been applied to Cretaceous coal strata.

Creamy Sandstone.

Fountain.

Garfield.

Gleneyrie.

Hermosa.

Kangaroo, probably Permo-Pennsyl- vanian.

Lower Wyoming.

Lyons.

Lists

GEOLOGICAL FORMATIONS GROUPED ACCORDING TO AGE— Continued

Pennsylvanian {Upper Carboniferous) .

— Continued.

Middle Carboniferous of Hayden geologists is largely Pennsyl- vanian.

Pennsylvanian.

Red Beds, in part.

Red Wall, probably Mississippian at tbe base.

Robinson Limestone.

Shinarump, in part.

Tensleep.

(Uinta Sandstone.)

Upper Carboniferous of earlier liter- ature, in part

Upper Coal Measures of the King Survey are probably equivalent to the Weber (Pennsylvanian), and the Wasatch (Mississippian), of the Wasatch Mountains.

Wasatch, upper part.

Weber Grits.

Weber Limestone.

Weber Sandstone (Uinta Moun- tains).

Weber Shale.

Mississippian (Lower Carboniferous) : *Blue Limestone, upper part.

Brown Limestone (Aspen).

Leadville Limestone, upper part.

Lower Carboniferous. The Hayden geologists appear to have used this term as a name for the lowest Carboniferous rocks locally pres- ent, without regard to their place in a full Carboniferous section.

Millsap.

Ouray, upper part.

Red Beds, in part.

Red Wall, possibly lower part.

Wasatch, lower part.

Devonian :

Blue Limestone, lower part. , Elbert. Leadville Limestone, lower part. Ouray, lower part. (Parting Quartzite, probably Ordovi- cian.)

-Continued Devonian. — Continued.

(Uinta Sandstone, probably Pre-

Cambrian.)

Silurian (Upper Silurian) : Silurian strata have not been found in Colorado. The "Silurian" of the Hayden geologists includes strata ranging in age from Cambrian to middle Devonian. That of the earlier literature of the present U. S. Geological Survey is mainly Ordovician. The "Niagara" of the Hayden geologists is probably Or- dovician.

Ordovician (Lower Silurian) : Calciferous. Canadian. Fremont. Harding.

Lower Paleozoic, includes Ordovi- cian. Manitou.

Niagara of Hayden Survey. Ogden, possibly Devonian. Parting Quartzite. Quebec, mainly. Silurian. See above. Tomichi. Trenton. White Limestone.

Cambrian:

Ignacio.

Lodore.

Lower Quartzite.

Potsdam.

Primordial.

Quebec group, in part.

Saratogan.

Sawatch.

Silurian of the earlier literature con- tains Cambrian.

(Uinta sandstone, probably Pre- Cambrian.)

Ute limestone, variously regarded as Cambrian, Ordovician, Silurian, Carboniferous, etc.

(White Limestone, probably Ordovi- cian.)

Lists

GEOLOGICAL FORMATIONS GROUPED ACCORDING TO AGE— Continued

Proterozoic

Pre-Cambrian (sec general index) :

Algonkian.

Huronian.

Idaho Springs.

Irving Greenatone.

Laurentian.

Needle Mountains. Pre-Cambrian, general. Red Creek Quartzite.

Pre-Oarnhrian. — Continued.

Uinta Quartzite (Sandstone) has been assigned to every age from Penn- sylvanian to pre-Cambrian.

Uncompahgre.

Vallecito.

Weber Quartzite of King, regarded by him as Pennsylvanian and Mis- sissippian, but probably equivalent to the Uinta.

Geological Formations Described

Alamosa formation, San Luis Valley: Siebenthal, 4.

Algonkian: See Algonkian in general

index. Alluvial deposits, Brecken ridge:

Lakes, 199.

Alluvium, Quaternary: Darton, 13.

Alnwick lake beds. Pikes Peak dis- trict: Cross, 24.

Amyzon shales: Clark, W. B., 1; Cope, 43; Scudder, 12; Smith, J. H., 1.

Animas, Durango-Gallup field: Shalor,

Animas: Cross, 18; Hills, R. C, 10; Howe, 2; Spencer, A. C, 1.

Apishapa, Apishapa quadrangle: Stose, 1.

Apishapa, Arkansas Valley: Darton, 9; Gilbert, 5.

Apishapa, Cretaceous: Darton, 13.

Apishapa, Elmoro quadrangle: Hills, R. C, 24.

Apishapa, Nepesta quadrangle: Fisher.

Apishapa, Spanish Peaks: Hills, R. C,

Apishapa, Walsenburg quadrangle: Hills, R. C, 15.

Arapahoe, Castle Rock district: Lee, W. T., 5; Richardson, 4.

Arapahoe, Cretaceous (?): Darton, 13.

Archean: See Archean in general in- dex.

Aiapahoe, Denver Basin: Cannon, 10;

Eldridge, 2; Emmons, Cross, and

Eldridge, 2. Arapahoe, eastern Colorado: Darton,

7 ; Richardson, 4. Arapahoe: Cross, 18; Geijsbeek, 1;

Hatcher, 3; Stanton and Kuowlton,

1; Washburne, 5.

Arikaree: Cragin, 3; Darton, 9, 13; Osborn, 4.

Arkansas sandstone: Butters, 2; End-

lich, 1, 5; Girty, 2. Atlantosaurus beds: Emmons, Cross,

and Eldridge, 2; White, 19. Aubrey: Girty, 2; Powell, 3. Badito, Walsenburg quadrangle: Hills,

R. C, 15. Badito: Butters, 2; Girty, 2. Bad Land group: Holmes, 2. Baptanodon beds: White, 19. Bellerophon limestone: Girty, 2;

Powell, 3. Benton shale, Anthracite-Crested

But to quadrangle: Emmons, Cross,

and Eldridge, 1. Benton, Apishapa quadrangle: Stose, 1. Benton, Arkansas Valley: Gilbert, 5. Benton, Boulder district: Fenneman, 5. Benton, Castle Rock: Lee, W. T., 5. Benton, Cretaceous: Darton, 9. Benton, Denver Basin: Cannon, 10;

Emmons, Cross, and EHdridge, 2. Benton, eastern Colorado: Darton, 7. Benton, Florence: Eldridge, 4.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Benton, Hahns Peak: Gale, 1.

Benton, Rabbit E2ars region: Grout, Worcester, and Henderson, 1.

Benton, San Juan: Comstock, 7.

Benton, southeastern Colorado: Stev- enson, 8.

Benton, southern Colorado: Stevenson.

Benton, Tampa: Fenneman and Gale,

Benton: Eldridge. 1; Geijsbeek, 1 Hayden, 6. 19; Henderson, J.. 10 King, 1; I-akes. 117, 165; Logan, 1 Martin, 1; Marvine,, 1; Peale. 7 Rles, 1; Spencer, 1.

Bishop Mountain conglomerate: Gale, 8; Powell, 3.

Bitter Creek: Peale, 7; Powell, 3; Scott, W. B., 2; Stanton and Knowl- ton, 1.

Blue limestone. Alma: Patton, 10.

Blue limestone. Aspen: Hen rich, 2; Newberry, 16; Spurr, 1.

Blue limestone. Carboniferous: Em- mons, 9; Spurr. 1.

Blue limestone, Leadville: Emmons and Irving, 1; Girty, 2.

Blue limestone, San Miguel County: Spaulding, 1.

Blue limestone, Tenmile district: Em- mons, 27.

Bowie, Grand Mesa district: Lee, W. T., 13.

Bridger beds,. Huerfano lake basin: Cross, 18; Osbom, 1, 2, 4; Osbom and Wortman, 3.

Bridger beds, northwestern Colorado: Powell, 3; Smith, J. H., 1; White, 4.

Bridger beds: Cope, 54, 60; Hills, R. C. 19; King. 1; Peale, 7; Scott, W. B., 2, 3; White, 26b.

Brown limestone. Aspen: Henrich, 2; Newberry, 16.

Browns Park formation: Gale. 7. 8; Hague and Emmons, 1; King, 1; Powell, 3; White, 26.

Brule: Darton, 9; Osbom, 4.

Calciferous: Hayden, 19; Peale, 7.

Canadian: Peale, 7.

Carlile, Arkansas Valley: Gilbert, 5. Carlile, Cretaceous: Darton, 13. Carlile, eastern Colorado: Darton* 7. Carlile, Elmoro quadrangle: Hills, R.

C, 24. Carlile, Nepesta quadrangle: Fisher, 1. Carlile, Pueblo quadrangle: Gilbe'-t, 7. Carlile, Spanish Peaks: Hills, R C,

Carlile, Walsenburg: Hills, R. C, 15.

Castle Rock conglomerate: Lee, W. T.,

5; Richardson, 4. Ceratops beds, Wyoming, Converse

County: Hatcher, 1. Ceratops beds: Hatcher, 1, 3; Marsh.

in Elmmons, Cross, and Eldridge, 2;

Knowlton, 3; Stanton, 5. Chadron: Darton, 9; Osbom, 4. Chart of formations from folios: Un- derbill, 3. Chugwater: Darton, 7, 9, 13; Girty, 2. Coal measures, age of: Chauvenet, 10. Coal measures, Rio Blanco County:

Gale, 2. Coal measures, southeastern Colorado:

van Diest, 10. Coal measures: Holmes, 2; King, 1;

Lakes, 186; Peale, 8. Colorado, Aspen (Niobrara) : Spurr, 1. Colorado, Colorado Range: Hague and

Emmons, 1. Colorado, Denver Basin: Eldridge, 2;

Emmons, Cross, and Eldridge, 2. Colorado, North Park: Grout, Worces- ter, and Henderson, 1; Hague and

Emmons, 1. Colorado, northwestern Colorado:

WTiite, 4. Colorado, Perry Park district: Kruger.

Hamilton, and Enriquez, 1. Colorado. Pikes Peak district: Cross,

Colorado, Rabbit Elars region: Grout,

Worcester, and Henderson. 1. Colorado, shales: Hewett, 1. Colorado, southeastern division: E2nd-

lich, 4. Colorado, usage of term: Eldridge, 1.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Colorado: Henderson, J., 10; Holmes,

2; King, 1; Stevenson, 7, 13; White,

Comanche, Apishapa: Stose, 1. Comanche, correlation with Dakota:

Stanton, 3. Comanche: Cretaceous, Darton, 9, 13. Comanche, eastern Colorado: Darton,

Comanche, southeastern Colorado:

Darton, 11.

Comanche (?): Henderson, J., 10.

Creamy sandstone, eastern foothills: Butters, 2; Emmons, Cross, and Eld- ridge, 2; Fenneman, 5.

Crinkled sandstone, eastern foothills: Butters, 2 ; Fenneman, 5 ; Henderson,

Cuchara, Cretaceous (?): Darton, 13.

Cuchara, Spanish Peaks: Hills, R. C,

Cuchara, Trinidad : Richardson, 2.

Cuchara, Walsenburg: Hills, R. C, 15.

Cuchara: Hills, R. C, 19.

Cutler, Durango quadrangle: Emmons, W. H., 1.

Cutler. Engineer Mountain quad- rangle: Cross, 41.

Cutler, Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Cutler, Ouray district: Irving, 2.

Cutler, Rico quadrangle: Cross and Ransome, 1.

Cutler, San Juan: Cross, 35; Cross and Howe, 1.

Cutler, Silverton: Cross, Howe, and Ransome, 1; Cross, Howe, and Irv- ing, 2; Howe, 2.

Cutler: Butters, 2.

Dakota, Anthracite-Crested Butte: Km- mons, Cross, and Eldridge, 1.

Dakota, Apishapa quadrangle: Stose,

Dakota, Arkansas Valley: Darton, 9, 13; Gilbert, 5.

Dakota, Aspen: Spurr, 1.

Dakota. Book Cliffs district: Richard- son, 1.

Dakota, Boulder district: Fenneman, 5; Henderson, J., 3.

Dakota, Breckenridge district: Ran- some, 5.

Dakota, coal in : Stone, "S.

Dakota, Colorado group: Hague and Emmons, 1.

Dakota, Cretaceous: Darton, 9, 13; Spurr, 1.

Dakota, Denver Basin: Cannon, 10; Eldridge, 2; Elmmons, Cross, and Eadridge, 2.

Dakota, Durango-Gallup field: Shaler,

Dakota, eastern Colorado: Darton, 7.

Dakota, Elk Range: Holmes, 1.

Dakota, Elmoro quadrangle: Hills, R. C, 24.

Dakota, Ehigineer Mountain quad- rangle: Cross, 41.

Dakota, Florence: Eldridge, 5.

Dakota formation, relation to Co- manche: Stanton, 3.

Dakota, Front Range: Stanton, 3.

Dakota, Grand Mesa: Lee, W. T.. 13.

Dakota, Grand River district: Peale,

Dakota, Grand River Valley: Riggs and Farrington, 1.

Dakota, Hahns Peak: Gale, 1; George and Crawford. 1.

Dakota, LaPlata Mountains: Cross, Spencer, and Purington, 1.

Dakota, Montrose County: Emmons, W. H., 3.

Dakota, Morrison, relation to: Stanton,

Dakota, Nepesta quadrangle: Fisher, 1.

Dakota. North Park: Grout. Worcester, and Henderson, 1; Hague and Em- mons, 1.

Dakota, northwestern Colorado: Gale, 8: Henderson, J., 13; Wliite, 4.

Dakota, ore in: Lakes, 135.

Dakota, Ouray district, upper quartz- ite: Irving, 2.

Dakota, Perry Park: Kruger, Hamil- ton, and Enriquez, 1.

Dakota. Pikes Peak: Cross, 24.

Lists

GEOLOGICAL FORMATIONS DESCRIBEE)— Continued

Dakota, Placerville: Hillebrand and

Ransome, 1. Dakota, Pueblo quadrangle: Gilbert, 7. Dakota, Rabbit Ears region: Grout,

Worcester, and Henderson, 1. Dakota, Rico quadrangle: Cross and

Ransome, 1.

Dakota, Rio Blanco County: Gale, 2, 5.

Dakota, San Juan: Comstock, 7.

Dakota, southeastern division: £>nd- lich, 4; Lee, W. T., 4, 7; Stevenson,

Dakota, southern Colorado: Stevenson,

Dakota, Telluride: Cross and Puring- ton, 1, 2.

Dakota, Uncompahgre region: Sieben- thal, 1. '

Dakota, Walsenburg: Hills, R. C, 15.

Dakota. Yampa: Fenneman and Gale, 1, 2.

Dakota: Cross, Howe, and Irving, 1; Endlich, 5; Gale, 7; Gardner, J. H., 1; Geijsbeek, 1; Hayden, 6, 12, 14, 19, 22; Henderson, J., 10; Holmes, 6; King, 1; Lakes, 67, 95, 117, 165; Lee, W. T., 9, 10; Martin, 1; Mar- vine, 1; Peale, 7, 8; Ries, 1; Spencer, A. C, 1; Stevenson, 7; White, 26.

Dawson arkose, Castle Rock area: Richardson, 4.

Denver beds, age of: Cross, 13, 18, 19, 38; Knowlton, 3; Stanton, 5.

Denver, Cretaceous (?): Darton, 13.

Denver, Denver Basin: Cannon, 6, 10; Eldridge, 3; Emmons, Cross, and Eldridge, 2; Lakes, 165; Richardson,

Denver, eastern Colorado: Darton, 7.

Denver, lacustrine or fluviatile?: Davis, W. M., 5.

Denver, Tertiary: Cross, 13.

Denver: Cross. 18; Dall. 1; Hatcher, J. R., 3; Spencer, A. C, 1; Wash- burne, 5.

Doleritic breccia: Cross, 19.

Dolores, LaPlata Mountains: Cross and Spencer, 1.

Dolores, Montrose County: Emmons, W. H., 3.

Dolores, Ouray district: Irving, 2; Pur- ington, 3.

Dolores, Placerville: Hillebrand and

Ransome, 1. Dolores, Rico quadrangle: Cross and

Ransome, 1 ; Cross and Spencer, 1. Dolores, San Juan : Cross and Howe, 1. Dolores, Telluride: Cross and Puring-

ton, 1. Dolores: Butters, 2; Cross, Howe, and

Irving, 1; Hess, 4; Howe, 2; Lee, H.

A., 9. Dune sands, Quaternary: Darton, 13. Elbert, Engineer Mountain quadrangle:

Cross, 41. Elbert, Needle Mountains: Cross.

Howe, Irving, and Emmons, 1. Elbert, Ouray district: Irving, 2. Elbert, Silverton: Cross, Howe, and

Ransome, 1. Elbert: Cross, 33; Cross, Howe, and

Irving, 1; Howe, 2. Eolian soil : San Juan : Cross, 37. EiOlus granite. Needle Mountains:

Cross, Howe, Irving, and Emmons,

Escarpment, lower: Holmes, 2. Escarpment, upper: Holmes, 2. Flaming Gorge, Rio Blanco field:

Gale, 5, 8. Flaming Gorge : Powell, 3. Florissant lake beds. Pikes Peak dis- trict: Cross, 24. Fort Union group: Hayden, 19; Knowl- ton, 1; Newberry, 17; Smith, J. H.,

1; Weed, la. Fountain, age of: Pinlay, G. I., 3. Fountain, Boulder district: Butters, 2;

Fenneman, 5. Fountain, Boulder and Larimer coun- ties: Martin, 1. Fountain (?), Cripple Creek: Lind-

gren and Ransome, 3. Fountain, Manitou district: Finlay, G.

L, 3. Fountain, Pikes Peak diatrict: Cross,

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Fountain, Pueblo: Gilbert, 7. Fountain: Butters, 2; Girty, 2; Hen- derson, J., 10, 11. Fox Hills, Arkansas Valley: Gilbert, 5. Fox Hills, Boulder district: Fenneman,

Fox Hills, Castle Rock district: Lee, W. T., 5.

Fox Hills, Cretaceous: Darton, 9, 13.

Fox Hills, Denver Basin: Cannon, 10;

Eldridge, 2; Elmmons, Cross, and

Eldridge, 2.

Fox Hills, eastern Colorado: Cannon,

5: Darton, 7; Hayden, 20. Fox Hills, Florence: Eldridge, 5.

Fox Hills, Grand River district: Peale,

Fox Hills, northwestern Colorado: White, 4, 26.

Fox Hills, paleobotany: Cockerell, 9.

Fox Hills,' paleontology: Cragin, 2.

Fox Hills, San Juan: Comstock, 7.

Fox Hills southeastern division: End- lich, 4.

Fox Hills, southern Colorado: Steven- son, 12.

Fox Hills: Cope, 19; Eldridge, 1; End- lich, 5; Geijsbeek, 1; Hayden, 6, 19; Henderson, J., 10; King, 1; Lakes, 95, 165; Martin, 1; Marvine, 1; New- berry, 16; Peale, 7; Ries, 1; Spen- cer, A. C, 1; Stevenson, 5.

Fremont limestone. Canon City: Wal- cott. 3.

Fremont limestone, eastern Colorado: Darton, 7.

Fremont limestone, Ordovician: Dar- ton, 9, 13.

Fremont limestone. Pikes Peak: Cross,

Fremont limestone: Darton, 14; Girty,

Gallisteo sand group: Hayden, 6, 12; Peale, 7.

Garfield, Monarch-Tomichi: Crawford,

Glacial or lake beds, Mosquito Range: Emmons, 9.

Gleneyrie, Manitou district: Finlay, G. I., 3.

Graneros. Arkansas Valley: Gilbert, 5. Graneros, Apishapa quadrangle: Stose,

Graneros shale, Cretaceous: Darton,

Graneros shale, eastern Colorado: Dar- ton, 7. Graneros shale, Elmoro quadrangle :

Hills. R. C, 24. Graneros shale, Nepesta quadrangle:

Fisher. 1. Graneros shale. Pueblo quadrangle:

Gilbert, 7. Graneros shale, Walsenburg: Hills, R.

C, 15. Granitic rocks: HoUister, 1. Gray porphyry, Leadville: Emmons

and Irving. 1. Greenhorn, Apishapa quadrangle:

Stose. 1. Greenhorn, Arkansas Valley: Gilbert,

Greenhorn, Cretaceous: Darton, 13. Greenhorn, eastern Colorado: Darton,

Greenhorn, ESmoro quadrangle: Hills,

R. C, 24. Greenhorn, Nepesta quadrangle: Fish- er, 1. Greenhorn, Pueblo quadrangle: Gilbert,

Greenhorn, Walsenburg quadrangle:

Hills, R. C. 15. Green River, Grand Mesa: Lee, W. T..

Green River, Grand River district:

Peale, 12. Green River, northwestern Colorado:

Gale, 8; Powell, 3; White, 4, 26. Green River, Rio Blanco oil fields:

Gale, 5. Green River: Endlich, 5; Gale, 7;

King, 1; Lee, W. T., 10; Peale, 7. Gunnison, Anthracite-Crested Butte:

Emmons, Cross, and Eldridge. 1. Gunnison, Aspen: Spurr, 1. Gunnison, Grand Mesa: Lee, W. T., 13.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Ck>iitinued

Gunnison, Telluride: Purlngton, 2.

Gunnison: Lee, W. T.. 10, 13.

Halymenites sandstone: Hewett, 1; Stevenson, 8.

Harding sandstone. Canon City: Wal- cott, 3.

Harding sandstone, eastern Colorado: Darton, 7.

Harding sandstone, Ordovician: Dar- ton, 9, 13.

Harding sandstone, Pikes Peak : Cross,

Harding sandstone, Pueblo quad- rangle: Gilbert, 7.

Harding sandstone: Darton, 14; Girty,

Hell Creek beds: Brown, B., 1; Knowl- ton, 3; Stanton, 5.

Henrys Fork group: Peale, 8; Powell,

Hermosa, Engineer Mountain quad- rangle: Cross, 41.

Hermosa, Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Hermosa, Ouray district: Irving, 2; Purington, 3.

Hermosa, Rico quadrangle: Cross and Ransome, 1; Cross and Spencer, 1.

Hermosa, Silverton: Cross, Howe, and Ransome, 1.

Hermosa: Cross, Howe, and Irving, 1; Girty, 2; Howe, 2.

High Park beds. Pikes Peak district: Cross, 24; Cross and Penrose, 1.

Horsetail Creek: Darton, 9; Osborn, 4.

Huerfano, Spanish Peaks: Hills, R. C.

Huerfano, Trinidad: Richardson, 2.

Huerfano: Cross, 18; Hills, R. C, 13, 19; Lakes, 156; Osborn, 2; Smith, J. H., 1; Weller, 1.

Huronian: Hague and Emmons, 1; King, 1.

Hygiene sandstone: Fenneman, 5; Henderson, J., 10.

Idaho Springs: Patton, 7; Spurr, Car- rey, and Ball, 1.

Ignacio quartzite, Engineer Mountain: Cross, 41.

Ignacio quartzite. Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Ignacio quartzite, Rico Mountains: Cross and Ransome, 1.

Ignacio quartzite, Silverton: Cross, Howe, and Ransome, 1.

Ignacio quartzite: Cross, 33; Cross, Howe, and Irving, 1; Howe, 2.

Ingleside, eastern foothills: Butters, 2.

Irving greenstones. Needle Moimtains: Cross, Howe, Irving, and Emmons, 1.

Jaque Mountain: Emmons, 27.

Judith River beds: Peale. 18; Stanton and Knowlton, 1.

Kangaroo: Monarch-Tomichi: Craw- ford, 4.

Lacustrine: Scott, W. B., 3.

Lake beds, age of: Cross, 18.

Lake beds, Hahns Peak: George and Crawford, 1.

Lake beds, Leadville: Emmons, 2; Em- mons and Irving, 1.

Lake beds. Mosquito Range: Emmons,

Lake beds: Cross, 27; Marvine, 1.

Lake beds. See also Alnwick, High Park, Middle Park, etc.

IwAPlata sandstone: Engineer Moun- tain, Cross, 41.

IPlata, xMontrose County: Emmons, W. H., 3.

IPlata, ore deposits in: Lindgren, 9.

IPlata, Ouray district: Irving, 2.

IPlata, Placerville: Hess, 4; Hille- brand and Ransome, 1, 2; Lindgren,

LaPlata, Rico Mountains: Cross and Spencer, 2.

I-APlata, sandstone: Cross, Howe, and Irving, 1; Cross and Ransome, 1; Cross and Spencer, 1; Hess, 4; Howe, 2; Lee, H. A., 9; Lindgren, 9.

IaPIata, San Juan: Cross and Howe,

LaPlata, Telluride: Cross and Puring- ton, 1; Purington, 2.

IPlata: Cross, 35; Girty, 2; Woolsey.

GEOLOGICAL FORMATIONS DESCRIBED — CODtlnuea

Laramie, age o(: BanniBter, 1; Croas,

18; Knowkon, 3; Stanton, 6; Veacb,

Laramie, Anthraclte-CreBted Butte:

HanmoQS, Cross, and Eldrldge, 1. Iramle, Aspen: Spurr, 1. Lararuie, Boulder: Fenneman. 5. f,aramie, CasUe Rock: Lee, W. T., 5, Laramie, coal-bearing: Hills, R. C, 22;

I.akes, 149. Laramie, correlation: White, 7, l.aramie. Crested Butte: Warren, E.

R.. 2. 1.aranUe, Cretaceous: Darton, fl, 13. Iramie, J>iivfr Basin Cannon. 10;

Cross. 3, 13; Eldrldge, 2; Emmons,

Cross, iinii Eldrldge, 2. Iramle. Durango coal field: Taft, 1, Laramie, Ourango-Gallup field: Shaler,

1; Shaler and Gardner, 1. I.aramle, eastern Colorado: Darton, 7. I.aramle. BImoro quadrangle: Hills, R.

Laramie, extent and correlation:

White. 7. Laramie, Florence: Eldrldge, 5. Laramie, Grand River district: Peale.

Iaramle. Hahns Peak: George and

Crawford. 1. I-aramle, literature: Hay, O. P.. 3. lramle, northwestern Colorado: Gale,

8: While, 4, 26. I.dramle, ore In: Lakes. 135. Iramle, origin: Vealch. 1. lramle. paleoAtology : Holllck, A., 2. lramle. relation to earlier and later

formations: White, 25. I.jiramie, Rouit County: E. and M. J.,

l.ramie, Shoshone group: Cross, 3S. I.rarale, soulheastem Colorado: Stev- enson, 8; van Diest. 10. l..aramle, southern Colorado: Steven- son, 6, 10, 12. Laramie, Spanish Peaks: , R. C

2S.

mie. Trinidad: Richardson. 2.

Laramie. Wal sen burg guadrangle: HIIIb. R. C, 15.

I.Aramle, western Wyoming and adja- cent regions: Peale, 13.

I.,aramie, Yanipa: Fenneman and Gale,

l.Aramlc: Eldridge, 1 ; Endlich, G; Gale, 7; Gardner, J. H., 1; Geljebeek, 1; Hayden. 19: Henderson. J., 10; Howe, 2; King. 1; Lakes, 96, 117, 165; Lee. W. T., 11, 12, 14; Martin, 1; Newberry, 12, 16; Peale, 17; Spen- cer, A. C. 1; Stevenson, 7; Wash- bume, 5.

Laurentlan: Hague and Emmone, 1; Hunt, 4; King. 1.

LeadvUle limestone. See also Blue limestone.

Leadvllle limestone. Alma: Paiton, 10.

Leadvllle limestone, Anthracite- Crested Butte; Emmons, Cross, and Eldrldge, 1.

l.,eadvlllc llmeetone. Aspen, Carbonlt-

l..eadvllle llmesione: Raymond. 11. Leadvllle porphyry. Alma: Patton, 10. Lewis shale. Durango-Gallup field:

Shaler, 1 ; Shaler and Gardner. 1. Tewls shale. La Plata Mountains:

Cross and Spencer, 1. Lewis shale, northwestern Colorado:

Gate, g. Lewis shale. Vampa: Fenneman and

Gale. 2. Lewis shale: Gale, T; Lee. W. T., 14. Lignites, age of: Cope. 12; Sievenson,

Llgnitlc, age of Laramie: Bannister, 1. , Denver: Brooks, 1; Mally, 1. Llgnitlc. eaatem Colorado: Hayden,

Ugnltic, Golden: Berthand, 2. Llgnitlc, Marshall mine: Hayden. 16. Llgnitlc, paleontology: Lesquereux, 2. Llgnitlc, Rocky Mountain region: Les-

quereui. 5. 6,

4S(i

Lists

GEOLOGICAL FORMATIONS DESCRIBED— ConUnued

Lignitic, southeastern division: End lich, 4.

Ugnitic: Cross, 19; Dana, J. D., 2

Endlich, 1; Hayden, 14, 18, 19, 22

Holmes, 2; Manine, 1; Peale, 5, 7

West, H. T., 1. Lodore group : Berkey, 1 ; Emmons, 32 ;

Gale, 8 ; Hague and Emmons, 1 ; King,

1; Powell, 3; Weeks, 15. Loup Fork: Cope, 54, 60. Loup River beds: Hayden, 19. Lower Carboniferous, Aspen : Henrich,

2; Newberry, 16. See Brown lime- stone. Lower quartzite, Cambrian: E*nmons,

Lower quartzite, Leadville: Emmons

and Irving, 1. Lykins, Boulder district: Butters, 2;

Fenneman, 5. Lykins: Henderson, J., 10; Martin, 1. Lyons, Boulder and Larimer counties:

Butters, 2; Fenneman, 5; Martin, 1. Lyons, stains on: Tillman, 1. Lyons: Henderson, J., 10. Mancos, Book Cliffs: Richardson, 1. Mancos, Cretaceous section: Stanton,

Mancos, Durango coal field: TaCf, 1. Mancos, Durango-Gallup field: Shaler,

1; Shaler and Gardner, 1. Mancos, E3ngineer Mountain: Cross. 41 Mancos, Grand Mesa: Lee, W. T., 13. Mancos, Hahns Peak: George and

Crawford, 1. Mancos, LaPlata Mountains: Cross,

Spencer, and Puringtou, 1. Mancos, Ouray district: Irving, 2. Aancos, northwestern Colorado: Gale,

8; Henderson, J., 13. Mancos, Placerville: Hillebrand and

Ransome, 1. Mancos, Rico quadrangle: Cross and

Ransome, 1 ; Holmes, 4. Mancos, Rio Blanco: Gale, 2, 5. Mancos, Telluride: Cross and Puring-

ton. 1; Purington, 2. Mancos, Yampa: Fenneman and Gale,

Mancos: Cross, Howe, and Irving, 1; Gale, 7; Gardner, J. H., 1; Howe. 2; Lee, W. T., 9, 10, 13, 14.

Manitou, eastern Colorado: Darton, 7.

Manitou, Ordovician: Darton, 9, 13.

Manitou, Pikes Peak district: Cross,

Manitou: Darton, 14; Girty, 2. Mariposite sandstone: Hess, 4. Maroon, Anthracite-Crested Butte: Emmons, Cross, and Eldridge, 1.

Maroon, Aspen: Spurr, 1.

Maroon, Grand Mesa: Lee. W. T., 13.

Maroon, Tenmile: Emmons, 27.

Maroon: Girty, 2.

Mauvaises Terres or WTiite River: Marsh, 1.

McElmo, Engineer Mountain: Cross,

McElmo, LaPlata Mountains: Cross, Spencer, and Purington, 1.

McElmo, Montrose County: Emmons, W. H., 3.

McElmo, Ouray district: Irving, 2.

McElmo, Placerville: Hess, 4: Hille- brand and Ransome, 1, 2.

McEUmo, Rico quadrangle: Cross and Ransome, 1; Cross and Spencer, 1.

McElmo, San Juan: Cross and Howe,

McElmo, Telluride: Cross and Puring- ton, 1.

McElmo: Cross, 35; Cross, Howe, and Irving, 1; Howe, 2; Ie, H. A., 9.

.Mesaverde, Book Cliffs: Richardson, 1.

Mesaverde, Durango coal field: Shaler. 1 ; Shaler and Gardner, 1 ; Taff, 1.

Mesaverde, Grand Mesa: Lee. W. T.,

Mesaverde, LaPlata mountains: Cross* Spencer, and Purington, 1.

Mesaverde, northwestern Colorado: Gale, 8; Henderson, 13.

Mesaverde, Rio Blanco oil field: Gale.

Mesaverde, Yampa: Fenneman and Gale, 2.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Mesaverde: Cross, Howe, and Irving, 1; Gale, 7; Gardner, J. H., 1; Hay- den. 22; Holmes, 2; Howe, 2; Lee, W. T., 10, 13, 14.

Middle Park formation: Cross, 18, 19;

Eldridge, 6. Millsap. Carboniferous-Triassic: Dar-

ton, 9, 13. Millsap, eastern Colorado: Darton, 7. Millsap (?), Manitou region: Finlay,

G. I., 3.

Millsap, Pikes Peak district: Cross, 24.

Millsap, Pueblo quadrangle: Gilbert, 7.

Mississippian. map showing: Willis, 2.

Mississippian: Girty, 2.

Molas, Engineer Mountain: Cross, 41.

Molas, Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Molas. Ouray district: Irving, 2.

Molas, Silverton: Cross, Howe, and Ransome, 1.

Molas: Cross, Howe, and Irving, 1; Girty, 2; Howe, 2. -'

Montana. Anthracite-Crested Butte: Emmons, Cross, and Eldridge, 1-.

Montana, Aspen, (Pierre): Spurr, 1. Montana, Cretaceous: Lakes, 157. Montana, Denver Basin: EJmmons,

Cross, and Eldridge, 2. Montana, Florence oil field: Eldridge.

Montana, ore in: Ikes, 135. Montana, Pikes Peak district: Cross.

Montana, Rabbit Ears region: Grout,

Worcester, and Henderson, 1. Montana, usage of term: Eldridge, 1. Montana: Ikes, 99, 117, 165. .Monument Creek, age of: Darton, 12. .Monument Creek, Castle Rock: Ie,

W. T., 5; Richardson, 4. .Monument Creek, Denver district:

Cannon, 10: EHdridge, 2; Emmons,

Cross, and Eldridge, 2. Monument Creek, Palmer Lake: Can- non, 9. Monument Creek, Tertiary: Darton, 13.

Monument Creek: Hayden, 6, 12, 14, 18, 19; lAkes, 6; Peale, 7; Richard- son. 4.

Morrison, Apishapa quadrangle: Stose,

Morrison. Boulder district : Fenueman,

.Morrison, Canon City: Stanton, 3. Morrison, Castle Rock: Lee, W. T., 5. Morrison, correlation, Comanche and

Dakota: Stanton, 3. Morrison, Cretaceous: Darton, 9, 13. .Morrison. Denver Basin: Emmons,

Cross, and Eldridge. 2. Morrison, eastern Colorado: Darton, 7. Morrison, fresh water beds: Hender- son, J., 10. Morrison. Front Range: Stanton, 3. -Morrison, Perry Park: Kruger, Hamil- ton, and Enriquez, 1. .Morrison, Pikes Peak district: Cross,

Morrison, Pueblo: Gilbert, 7. Morrison, Purgatory River: Stanton. 3. Morrison, Rabbit Ears region: Grout,

Worcester, and Henderson, 1. Morrison, Rio Cimarron: Stanton. 3. .Morrison (?), southeastern Colorado:

Lee, W. T., 4. Morrison, Walsenburg quadrangle:

Hills, R. C. 15. .Morrison: Cross, 22; Girty, 2; Hen-

ning, 3; Ie, W. T., 6; Martin, 1. Xeedle Mountain group. Engineer

Mountain: Cross, 41. Niagara: Hayden, 12; Peale, 5. Niobrara, Anthracite-Crested Butte:

Emmons. Cross, and Eldridge, 1. Niobrara, Apishapa quadrangle: Stose,

Niobrara. Arkansas Valley: Gilbert. 5. Niobrara, Boulder district: Fenneman,

Niobrara. Castle Rock: Lee, W. T.. 5. Niobrara, Colorado Range: Hague and

Emmons, 1. Niobrara, Cretaceous: Darton, 9. Niobrara, Denver Basin: Cannon, 10;

Emmons, Cross, and Eldridge, 2.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Niobrara, eastern Colorado: Darton, 7. Niobrara, Florence: Eldridge, 5. Niobrara, ore in: Lakes, 135. Niobrara, Pueblo quadrangle: Gilbert,

Niobrara, Rabbit Ears region: Grout, Worcester, and Henderson, 1.

Niobrara, San Juan: Comstock, 7.

Niobrara, southeastern Colorado: Stev- enson, 8.

Niobrara, southern Colorado: Steven- son, 12.

Niobrara, Tertiary: Hague and Em- mons, 1; King, 1.

Niobrara, Yampa: Fenneman and Gale, 1.

Niobrara: Eldridge, 1; Geijsbeek, 1; Hayden, 6, 19; Henderson, J., 10; King, 1; Lakes, 99, 117, 165, 204; Logan, 1; Martin, 1; Marvine, 1; Peale, 7; Ries, 1; Spencer, 1.

Nussbaum, Apishapa quadrangle: Stose, 1.

Nussbaum, Elmoro quadrangle: Hills. R. C, 24.

Nussbaum, Nepesta quadrangle: Fish- er. 1.

Nussbaum, Pueblo quadrangle: Gilbert,

Nussbaum, Spanish Peaks: Hills, R. C,

Nussbaum, Tertiary: Darton, 13.

Nussbaum, Walsenburg: Hills, R. C,

Ogalalla: Darton, 9, 13; Osbom, 4.

Ogden Quartzlte: Berkey, 1; Emmons, 32; Gale, 8; Hague and Emmons, 1; King, 1; Weeks, 15.

Ohio, Anthracite-Crested Butte: Em- mons, Cross, and Eldridge, 1.

Ohio Creek, Grand Mesa: Lee, W. T., 10, 13.

Ouray, Engineer Mountain: Cross, 41.

Ouray, Monarch-Tomichi : Crawford, 4.

Ouray, Needle Mountains: Cross, Howe, Irving, and Emmons, 1; Hay, O. P., 2.

Ouray, Ouray district: Irving, 2.

Ouray, Rico Mountains: Cross ' and Ransome, 1; Cross and Spencer, 1.

Ouray, Silverton: Cross, Howe, and Spencer, 1.

Ouray: Cross, Howe, and Irving, 1; Girty, 2; Howe, 2; Kindle, 1; Pur- ington, 3.

Paonia, Grand Mesa: Lee, W. T., 13.

Parting quartzite. Alma: Patton, 10.

Parting quartzite. Aspen: Henrich, 2.

Parting quartzite, Cambrian: Emmons,

Parting quartzite, Leadville: £>mmon8 and Irving, 1.

Parting quartzite, Tenmile district: Emmons, 27.

Parting quartzite: Cross, 33; Girty, 2; Spencer, A. C, 2.

Pawnee Creek: Osbom, 4.

Pennsylvanian, Monarch-Tomichi dis- trict: Crawford, 4.

Pennsylvanian: Girty, 2; Henderson, J., 10.

Permo-Carboniferous, San Juan: Read,

Permo-Carboniferous: Butters, 2; King, 1; Peale, 7, 8.

Pictured Cliff group: Holmes, 2.

Pierre, Arkansas Valley: Gilbert, 5.

Pierre, Boulder district: Fenneman, 5.

Pierre, Canon City: Washbume, 5.

Pierre, Castle Rock: Lee, W. T., 5.

Pierre, Cretaceous: Darton, 9, 13.

Pierre, Denver Basin: Cannon, 10; Em- mons, Cross, and Eldridge, 2.

Pierre, eastern Colorado: Darton, 7.

Pierre, Elmoro quadrangle: Hills, R. C, 24.

Pierre, Florence: Eldridge, 5.

Pierre, Nepesta quadrangle: Fisher, 1.

Pierre, Pueblo quadrangle: Gilbert, 7.

Pierre, Rabbit Ears region: Grout, Worcester, and Henderson, 1.

Pierre, San Juan: Comstock, 7.

Pierre, southeastern Colorado: Steven- son, 8.

Pierre, southern Colorado: Stevenson,

Pierre, Spanish Peaks: Hills, R. C, 25.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Pierre, Tepee Buttes: Gilbert and Gul- liver, 1.

Pierre, Walsenburg quadrangle: Hills, R. C, 15.

Pierre: Eldridge, 1; Geijsbeek, 1; Hay- den. 6, 19; Henderson, J., 9, 10 King, 1; Martin, 1; Marvine, 1 Peale, 7; Richardson, 2; Ries, 1 Spencer, A. C., 1 ; White, 4.

Platte series: Cragin, 3.

Pliocene (?), Apishapa quadrangle: Stose, 1.

Point of Rocks: Powell, 3.

Poison Canyon, Cretaceous (?): Dar- ton, 13.

Poison Canyon, Spanish Peaks: Hills, R. C, 26.

Poison Canyon, Trinidad: Richardson,

Poison Canyon, Walsenburg: Hills, R.

Poison Canyon: Osbom, 2, 4. Post-Laramie, coal-bearing, northwest- ern Colorado: Gale, 8. Post-Laramie deposits of Colorado:

Cross, 18, 19 ; Hills, 17, 21. Potosi rhyolite, Needle Mountains:

Cross, Howe, Irving, and Elmmons, 1. Potosi rhyolite, Telluride: Cross and

Purington, 1. Potosi rhyolite: Cross, 32; Cross and

Purington, 1; Finch, 1; Howe, 2;

Lee, H. A., 9; Purington, 3. Potosi volcanics, Creede: Emmons and

Larsen, 1. Potsdam, contact with Archean:

Hovey, 1. Potsdam: Endlich, 5; Hayden, 14;

King, 1; Peale, 5, 7, 8. Pre-Cambrian. See Pre-Cambrian in

general index. Primordial period: Endlich, 5; Peale,

Prozoic : Endlich, 5. Puerco, Durango-Gallup field: Shaler,

Puerco, southern Colorado: Scott, W.

B., 3; Smith, J. H., 1.

Puerco: Cope, 54, 60, 63; Howe, 2; Newberry, 17.

Purgatoire, Apishapa quadrangle: Stose, 1.

Quartzite, Monarch-Tomichi: Craw- ford, 4.

Quebec : . Hague and Emmons, 1 ; King, 1; Peale, 5, 7.

Red Beds, Carboniferous and Triassic I?): Darton, 13.

Red Beds, Castle Rock: Lee, W. T., 5.

Red Beds, Colorado Range: Butters, 2; Hague and Emmons, 1.

Red Beds, Denver Basin: Cannon, 10.

Red Beds, Durango quadrangle: Elm- mons, W. H., 1.

Red Beds, eastern slope: Butters, 2; Hayden, 24.

Red Beds, Florence: Eldridge, 5.

Red Beds, Fremont County: Lindgren,

Red Beds, Grand River district: Peale,

Red Beds, Hahns Peak: Gale, 1; George and Crawford, 1.

Red Beds, North Park: Hague and Em- mons, 1.

Red Beds, Perry Park: Cannon, 7.

Red Beds, Rabbit Ears region: Grout, Worcester, and Henderson, 1.

Red Beds, San Miguel County: Spauld- ing, 1.

Red Beds, southwestern Colorado: Cross and Howe, 1; S — , C, 1.

Red Beds, Triassic, Aspen: Spurr, 1.

Red Beds, western Colorado: Cross,

Red Beds: Endlich, 5; Gale, 2; Girty, 2; Hayden, 5, 6. 14, 19, 22; Hender- son, J., 11 ; King. 1 ; Lakes, 95 ; Mar- vine, 1; Peale, 8.

Red Creek Quartzite: Powell, 3.

Red Wall: Powell, 3.

Rhyolite, Castle Jlock district: Lee, W. T., 5.

Rhyolite, Needle Mountains: Cross, Howe, and Irving, 1.

Rico, Engineer Mountain: Cross, 41.

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Rico, Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

Rico, Rico quadrangle: Cross and Ran- some, 1; Cross and Spencer, 1; Ran- some, 2.

Rico, Silverton: Cross and Howe, 1.

Rico: Butters, 2; Girty, 2.

River beds: Peale, 7.

Robinson: Emmons, 27.

Rollins sandstone, Grand Mesa: Lee, W. T., 13.

Ruby, Anthracite-Crested Butte: Em- mons, Cross, and Eldridge, 1.

Ruby, Grand Mesa: Lee, W. T., 13.

Ruby (Wasatch): Lee, W. T., 10.

Salt Wells: Powell, 3.

San Juan, Telluride: Cross and Pur- ington, 1.

San Juan breccias: Purington, 3, 7.

San Juan tuff. Needle Mountains: Cross, Howe, Irving, and Emmons, 1.

San Juan tuff, Ouray district: Irving.

San Juan tuff: Cross, Howe, and Irv- ing, 1; Howe, 2; Cross, 32; Finch, 1; Lakes, 50: Lay, 1; Lee, H. A., 9; Spaulding, 1; Winslow, 2.

San Miguel, Camp Bird mine: Tit- comb. 1.

San Miguel. Telluride: Cross, 30; Cross and Purington. 1; Purington,

San Miguel: Cross, 30; Hills, R. C. 11, 17; Lakes, 50; Lay, 1; Lee, H. A., 9; Spaulding, 1.

Santa Fe: San Luis Valley, Siebenthal,

Saratogan: Cross and Ransome, 1.

Sauranodon beds: White, 19.

Saurian sandstone: Denver Basin, Can- non, 10.

Sawatch, Anthracite-Crested Butte: Emmons, Cross, and Eldridge, 1.

Sawatch, Tenmile quadrangle: Em- mons, 27.

Sawatch: Girty, 2.

Sawatch quartzite. Monarch-Tomichi: Crawford, 4.

Section, Aguilar coal field: Lakes, 117.

Section, Alma, South Mosquito Gulch: Patton, 10.

Section, Animas canyoA: Hawn, L., 1; Lakes, 223.

Section, Arkansas River to New Mex- ico line: Butters, 2.

Section, Arkins: Butters, 2. Section, Aspen region: Lakes, 2, 21. Section, Bear Canyon: Butters, 2. Section, Bellvue: Butters, 2. Section, Book Cliffs: Lakes, 96. Section, Boulder: Butters, 2; Fenne- man, 5; Lakes, 124.

Section, Box Elder Canyon: Butters, 2.

Section, Carter Lake: Butters, 2.

Section, Chicago Park, Gunnison Coun- ty: Mg. Rept, 11.

Section. Colorado: Lakes, 21.

Section, Colorado-New Mexico bound- ary: Cope, 54.

Section, Colorado Springs: Butters, 2.

Section, Colorado- Wyoming boundary: Dart on, 15.

Section, Cottonwood Creek: Butters, 2.

Section, Deer Creek: Butters, 2.

Section, Eagle County, Battle Moun- tain: Tilden, 1.

Section, Florence: Lakes, 86; New- berry, 15.

Section, foot hills, eastern Colorado: Lakes, 3, 93, 111.

Section, Front Range: Lakes, 125.

Section, Glen wood Springs: Newberry,

Section, Grand River near Grand Junc- tion, Book Cliffs, Debeque: Lakes,

Section, Gunnison County, Chicago Park: Mg. Rept, 11.

Section, Hahns Peak: Parsons and Liddell, 1.

Section, Heygood Canyon: Butters. 2.

Section, Huerfano County: Lakes, 147.

Section, Indian Creek: Butters, 2.

Section, LaPIata Mountains: Lakes, 87.

Section, Larimer County, North Table Mountain: Butters, 2.

Section, Las Animas River: Clayton. 1.

GEOLOGfCAL FORMATIONS DE8CRr BED— Continued Seclion. LeadvHIe: Ameliog. 2; Miller. Sulphur Creek; Powell, 3.

G. W., 1; Robblne, F.. 1. Suii<ianc-e, eastern Colorador Butters,

Section, Leadvjlle, cut by Yak tunnel:

Armlngton and Stotesbury 1. Section, Leithand Creek Butters, 2. Section. Leyden coal mine: Mg. Rept.,

Section, Lyona: Butters, 2.

Section, Masonvllle: Buttera. 2.

Section, Slorrlaon: Butters, 2.

Section. N'epeBta. quadrangle: Flaher,

Section, one hundred and second mfr lidian: Hoy R.. 1,

Section. Owl Canyon: Butters, 2.

Section, Parh County: Lahea, 5.

Section, Perry Park: Butters. 2.

Section. Plctou: Meade, 1,

Section. Pitkin County: Lakes, S.

Section. Purgatory Canyon: Stevenson,

Section, Ralston Creek: Butters. 2.

Section, Rio Blanco County: Lakes, 97.

Section, Rocky Mountains, general- ized: Ball, J., 1.

Seclion, St- Charles River: Hawn, U,

Section. Sand Creek: Butlers, 2.

Section, South Park: Takes. 115; Mg. Rev., 5.

Section, Soulh Table Mountain; But- ters. 2.

Section, aouthwesiem Colorado: I.akeB, 107.

Section. Sterling: Lakes, 112.

Section, Stout: Butters, 2.

Section. Trinidad coal field: Steven- son, S.

Section. Turkey Creek: Butters, 2.

Sedimentary rocks, San Juan: Sned-

Shlnarump: Cross, 36; Oale, S; Olrty,

2; Powell. 3- Staoshone group: Cross. 38; -

Sllverton series: Cross, 32; Finch, 1;

Purlngton, 3, 7. Stratigraphy: Hayden, 14, 2S; Lesque-

Sundance. marine beds: Henderson. J.,

Teiluride, Engineer Mountain: Cross,

Teiluride. Sllverton: Cross and Howe,

Teiluride: Cross. Howe, and Irving. 1;

Finch, 1; Hills, R. C-, 11, 17. Tensleep: Butters, 2; Darton, 9, 13;

Henderson, J., 11. Tepee zone, Pierre shale: Gilbert, 5. 7. Ttmpas, Apistaapa quadrangle: Stose.

Tinipas. Arkanaas Valley: Gilbert, 5. Tlmpas, Cretaceous: Darton, 13. Tlmpas, Elmoro quadrangle: Hills, R.

C, 24. Timpas, Nepesta quadrangle: Fisher,

Tlmpas. Spanish Peaks: Hills. R. C,

Tlmpas. Walaenburg quadrangle: Hills,

R. C, 15. Tlmpas; I.gan. 1. TItanotherlum beds: Hatcher, 2. TonilchI limestone: Crawford. 4. Trenton: Endllch, 5; Olrty, 2; Wolcott,

Trinidad, Elmoro quadrangle: Hills,

R. C, 24. Trinidad. Spanish Peaks; Hills, R. C,

Trinidad, Walsenburg: Hills, R. C, 25.

Trinidad: Lakes, IS6, 15S; Richardson, 2: Washburne, 6.

Trout Creek. Yampa: Fenneman and Gale, 2.

Twenty Mile sandstone, Yampa: Fen- neman and Gale. S.

Uinta formation. Tertiary: Clark, W. B., 1; Cope, 60; Gale, 2, 3, 5, 6, 7, S; King, 1; Osboni, 4; Scott, W. B., 2; Smith, J. H., 1; White, 4, 26b-

Lists

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Uinta Quartzite, Pre-Cambrian : Berkey,

1; Emmons, 32; Gale, 8; Girty, 2;

Hague and Emmons, 1; King, 1;

Powell, 3; Weeks, 15; White, 26b. Uncompahgre, Engineer Mountain :

Cross, 41. Uncompahgre, Needle Mountains:

Cross, Howe, Irving, and Emmons, 1. Uncompahgre, Ouray district: Irving,

Uncompahgre, Rico Mountains: Cross

and Ransome, 1. Uncompahgre, Silverton: Cross, Howe,

and Ransome, 1.

'Uncompahgre: Emmons, W. H., 2; Cross, Howe, and Irving, 1.

Upper Coal-Measures: Berkey, 1; Sum- mons, 2, 9, 32; Hague and Emmons, 1; King, 1; Weeks, 15.

Vallecito, Needle Mountains: Cross, Howe, Irving, and Summons, 1.

Vermejo: Lee, 12.

Vermilion Cliff group: Gale, 8; Girty,

2; Powell, 3. Vermilion Creek, Routt County: Gale,

4; Hague and Emmons, 1; King, 1. Wasatch, Durango-Gallup field: Shaler,

Wasatch, Grand Mesa: Lee, W. T., 13. Wasatch, Grand River district: Peale,

Wasatch limestone: Berkey, 1; Em- mons, 32; Hague and Emmons, 1;

King, 1; Powell, 3; Weeks, 15. Wasatch, northwestern Colorado: Gale,

8 ; Henderson, J., 13 ; Smith, J. H., 1 ;

White, 4, 26. Wasatch, Rio Blanco oil field: Gale,

Wasatch, Routt County: Gale. 4. Wasatch, San Juan and Yampa dis- tricts: Cope, 15. Wasatch: Cope. 54; Endlich, 5; Girty,

2; Hayden, 27; Lee, W. T., 10;

Scott, W. B., 3. Washakie: Osborn, 4; Scott. W. B., 2. Wash Beds, Leadville: Emmons and

Irving, 1.

Weber, Anthracite-Crested Butte: Em- mons, Cross, and Eldridge, 1.

Weber, Aspen, Carboniferous: Spurr,

Weber, Tenmile district: Emmons, 27.

Weber: Girty, 2.

Weber grits, Alma: Patton, 10.

Weber grits, Carboniferous: Emmons,

Weber quartzite, northwestern Colo- rado: Berkey, Emmons, 32; Gale, 8; Hague and Emmons, 1; King, 1; Powell, 8; Weeks, 15; White, 4.

Weber shales, Carboniferous: Em- mons, 9.

White Cliff, Rio Blanco oil field: Gale.

White Cliff: Gale, 8; Girty, 2; Powell,

.White limestone. Alma district: Pat- ton, 10.

White limestone, Cambrian: Emmons,

White limestone, Leadville: Emmons and Irving, 1.

White porphyry, Alma: Patton, 10.

White porphyry, Leadville: Emmons and Irving, 1.

White River: Cope, 54, 60; Darton, 9. 13; Hayden, 19; King, 1; Matthew, la; Osborn, 1, 4; Peale, 7.

Wind River: Hayden, 19; Hills, 10, 13, 19 ; Osborn, 1, 2, 4 ; Osborn and Wort- man, 3; Scott, W. B., 2.

Wyoming, Breckenridge : Ransome, 5.

Wyoming, Carboniferoue-Triassic: Dar- ton, 9.

Wyoming, Chugwater, eastern Colo- rado: Darton, 7.

Wyoming Conglomerate: Hague and Emmons, 1; King, 1. See Bishop Mountain Conglomerate.

Wyoming, Denver Basin: Emmons. Cross, and Eldridge, 2.

Wyoming, Fountain, eastern Colorado: Darton, 7.

Wyoming, Front Range, Red Beds: Butters, 2; Fenneman, 6.

Wyoming, lower: Butters. 2.

Lists 493

GEOLOGICAL FORMATIONS DESCRIBED— Continued

Wyoming, lower. Perry Park: Kniger, Wyoming: Girty, 2.

Hamilton, and Enriquez, 1. Yampa: Girty, 2; Powell, 3.

Wyoming, Tenmile district: Emmons, Yule, Anthracite-Crested Butte: Em-

27. mons, Cross, and Eldridge, 1.

Wyoming, upper: Butters, 2. Yule, Tenmile quadrangle: Emmons,

Wyoming, upper, Perry Park: Kruger, 27.

Hamilton, and Enriquez, 1. Yule: Girty, 2.

3 bios 007 7H'1 AA5

aid /ibstracts Scctioa

'1

Bibliography of Colorado geology and mining, with subject index : from the earliest explorations to 1912

Colorado State Geological Survey

Boulder

Bulletin 7

Bibliography Of Colorado Geology And

Mining

With Object Index "' !"- :

From The Earliest Explorations

To 1912

By

Olive M. Jones

Denver, Colorado The Smith-Brooks Printing Company, State Printers

Geological Board

Letter Of Transmittal

Contents

Introduction

Biblioguapuy Of Colokado Geology 9

12 Bibliography Of Colorado Geology

Bibliography Op Colorado Geology 13

14 Bibliography Of Colorado Geology

Bibliography

10 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 17

37S-394, 18G4.

18 Bibliography Of Colorado Gbology

Bibliography Of Colorado Geology 19

Bibliography Of Colorado Geology 21

22 Bibliography Op Colorado Geology

Bibliography Of Colorado Geology 23

24 Bibliography Of Colorado Geology

G14, 1878.

Bibliography Op Colorado Geology 25

26 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 27

2S Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 29

30 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 31

32 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 38

84 Bibliography Of Colorado Qboloot

36 Bibliography Of Colorado Qxoloot

Bibliography Of Colorado Geology 37

18 Biblioobafhy Of Colorado Geology

Bibliography Of Colorado Oboloqy

40 Bibliography Of Colorado Gbologt

Bibliography Of Colorado Qboloot 41

Bibliography Of Colorado Geology 43

44 Bibliography Of Colorado Gboloqy

46 Bibliography Of Colqrado Qbologt

Bibliography Ok Colorado Gbologt 47

48 Bibliogeapiiy Of Colouado Geology

Bibliogbafhy Of Colorado Geology 49

50 Bibliography Of Colorado Qboloot

62 Bibliography Of Colorado Oeolooy

Bibliography Of Colorado Geology 68

66 Bibliography Of Colohado Geology

Bibliography Of Colorado Qbology 57

58 Bibliography Of Colorado Gboloot

Bibliogeapht Of Colorado Gboloot 59

60 Bibuooraphy Of Colorado Geology

Bibliography Of Colorado Geology 61

62 Bibliography Of Colorado Geology

Bibliography Of Colorado Gbolooy 63

64 Bibliography Of Colorado Gboloqy

Bibliography Of Colorado Geology B5

A. F.)

(S)

66 Bibliography Op Colorado Obolooy

Riblioobaphy Of Colorado Gbology 67

68 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 69

70 Bibliography Of Colorado Geology

Bibliography Of Colorado Geology 71

72 Bibliography Of Colorado Geoloot

Bibliography Of Colorado Geology 73

Biblioguaphy Of Colorado Geology 76

76 Bibliography Of Colorado Geology

Bibliography Of Colorado Geoloot 77

78 Bibliography Of Colobado Oioloot