BIBLIOGRAPHY OF NOKTft AMERICAN GEOLOGY, 100(3-1907. 103 
Hutchins, John Power — Continued. 
1262. The nomenclature of modern placer mining. — Eng. and Min. Jour., 
vol. 84, pp. 293-296, 4 figs., August 17, 1907. 
Discusses the classification and mode of formation of the placers. 
1263. Dredging beach gravel deposits near Nome. — Eng. and Min. Jour., 
vol. 84, pp. 955-9(51, 8 figs., November 23, 1907. 
Gives notes on the occurrence of placer gold. 
Hutchinson, W. Spencer. 
1264. The Bonanza silver mines of Cobalt, Ontario.— Eng. and Min. Jour., 
vol. 83, pp. 793-794, 9 figs., April 27, 1907. 
1265. Barytes deposits at Five Islands. Nova Scotia. — Eng. and Min. Jour., 
vol. 84, pp. 825-826, 7 figs., November 2, 1907. 
Idaho. 
[Seventh annual] report of the state inspector of mines, 1905. — See Bell, 
no. 195. 
Iddings, Joseph P. 
1266. Rock minerals, their chemical and physical characters ami their de- 
termination in thin sections. New York, John Wiley and Sons. L906. 548 pp. 
The texture of igneous rocks. — See Cross, Iddings, Pirsson, Washington, no. 
608. 
Ingall, Elfric Drew. 
1267. Summary of the mineral production of Canada for 1905. — Canada, 
Geol. Survey, Mineral Production for 1905, 16 pp., 1906. 
1268. Section of mines : Annual report for 1904. — Canada, Geol. Survey, 162 
pp., 1906. 
Gives various data relating to the mineral industries and products of Canada. 
1269. Report of the mines section. — Canada, Geol. Survey, Summ. Rept. for 
1906, pp. 158-163, 1906. 
Includes notes on the occurrence of various ores. 
1270. Annual report on the mineral industries of Canada for 1905. — Canada, 
Geol. Survey, Section of Mines, 174 pp. and pis., 1907. 
Ingalls, A. O. 
1271. Earthquakes and their probable origin. — Northwest Min. Jour., vol. 2, 
no. 1, pp. 2-12, 14 figs., July, 1906. 
(Jives a detailed discussion of the Pacific coast earthquakes from 1888 t<> 1808. 
Ingalls, Walter Ronton. 
1272. Mining the porphyry ore of Bingham [Utah]. — Eng. and Min. Jour., 
vol. 84, pp. 431^40, 1 pi., 17 figs., September 7, 1907. 
Includes a brief account of the geology and the occurrence and character of the copper 
ores. 
1273. The copper mines of Ely, Nevada. — Eng. and Min. Jour., vol. 84. pp. 
675-682, 7 figs., October 12. 1907. 
Includes a short account of the local geology and the occurrence of the ores. 
1274. The silver-lead mines of Eureka, Nevada. — Eng. and Min. Jour., vol. 
84, pp. L051 L058, 1 pi., 18 figs., December 7, 1907. 
Includes notes on the occurrence of the ores. 
Inkersley, Arthur. 
1275. Effects of the earthquake and fire upon the City of San Francisco and 
Its buildings.— Sci. Am., vol. 94, pp. 418-420, 9 figs., May L9, 1906. 
