GEOLOGICAL SURVEY PUBLICATIONS ON GOLD AND SILVER. 
The following list includes the more important publications by the 
United States Geological Survey on precious metals and mining dis- 
tricts. Certain mining camps, while principally copper producers, 
also produce smaller amounts of gold and silver. Publications on 
such districts will be found in the bibliography for copper, on page 
186. For a list of the geologic folios in which gold and silver 
deposits are mapped and described, reference should be made to the 
table on pages 11 to 13 of the present bulletin: 
Becker, G. F. Geology of the Comstock lode and the Washoe district; with 
atlas. Monograph III. 422 pp. 1882. 
Gold fields of the southern Appalachians. In Sixteenth Ann. Rept., 
Pt. Ill, pp. 251-331. 189.-). 
- Witwatersrand banket, with notes on other gold-bearing pudding 
stones. In Eighteenth Ann. Rept., Pt. V, pp. 153-184. 1897. 
Reconnaissance of the gold fields of southern Alaska, with some notes 
on the general geology. In Eighteenth Ann. Rept., Pt. III. pp. 1-86. maps. 1897. 
Brief memorandum on the geology of the Philippine Islands. In Twen- 
tieth Ann. Rept., Pt. II, pp. 3-7. 1900. 
Brooks, A. H. Reconnaissance in the Tanana and White river basins, Alaska, 
in 1898. In Twentieth Ann. Rept., Pt. VII, pp. 429-494. 1900. 
Reconnaissance from Pyramid Harbor to Eagle City, Alaska. In 
Twenty-first Ann. Rept., Pt. II, pp. 331-391. 1901. 
Preliminary report on the Ketchikan mining district, Alaska. Profes- 
sional Paper No. 1 . 120 pp. 1902. 
Brooks, A. H., Richardson, G. B.. and Collier, A. J. Reconnaissance of the 
Cape Nome and adjacent gold fields of Seward Peninsula, Alaska, in 1900. In 
reconnaissances in the Cape Nome and Norton Bay regions, Alaska, in 1900; a 
royal octavo pamphlet published in 1901 by order of Congress, pp. 1-184. 
Collier, A. J. A reconnaissance of the northwestern portion of Seward Penin- 
sula. Alaska. Professional Paper No. 2. 68 pp. 1902. 
Cross, Whitman. General geology of the Cripple Creek district, Colorado. In 
Sixteenth Ann. Rept., Pt. II, pp. 13-109. 1895. 
— Geology of Silver Cliff and the Rosita Hills, Colorado. In Seventeenth 
Ann. Rept., Pt, II, pp. 209-403. 1896. 
Cross, Whitman, and Spencer, A. C. Geology of the Rico Mountains, Colo- 
rado. In Twenty-first Ann. Rept., Pt. II., pp. 15-165. 1900. 
Curtis, J. S. Silver-lead deposits of Eureka, Nevada. Monograph VII. 200 
pp. 1884. 
Diller, J. S. The Bohemia mining region of western Oregon, with notes on 
the Blue River mining region. In Twentieth Ann. Rept., Pt. Ill, pp. 7-36. 1900. 
Eldridge, G. H. Reconnaissance in the Sushitna Basin and adjacent territory 
in Alaska in 1898. In Twentieth Ann. Rept., Pt. VII, pp. 1-29. 1900. 
Emmons, S. F. Geology and mining industry of Leadville, Colorado; with 
atlas. Monograph XII. 870 pp. 1886. 
Progress of the precious metal industry in the United States since 1880. 
In Mineral Resources U. S. for 1891, pp. 46-94. 1892. 
Economic geology of the Mercur mining district, Utah. In Sixteenth 
Ann. Rept., Pt. II, pp. 349-369. 1895. 
The mines of Custer County, Colorado. In Seventeenth Ann. Rept., 
Pt. II, pp. 411-472. 1896. 
•id 
