100 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Horton, F. W. 
The production in the United States in 1905 of platinum and quicksilver. — 
See no. 2418. 
Hoskins, L. M. 
1217. The rigidity of the earth. — Science, new ser., vol. 24, p. 403, September 
28, 1906. 
Hotchkiss, W. O. 
1218. Cobalt mining district, Ontario.— Min. World, vol. 23, no. 2.°,, pp. 634- 
630, 4 tigs., December 9. 1905. 
Describes the geology and the occurrence and character of the ore deposits. 
1219. Mining and mineral resources of Wisconsin. — Am. Min. Congr., Kept, 
of Proc, 9th Ann. Sess., pp. 220-225, 1907. 
Hovey, Edmund Otis. 
1220. Present condition of Mont Pele. — Abstract: Geol. Soc. America, Bull., 
vol. 16, pp. 566-569, 2 pjs., 1906. 
1221. Soufriere of Saint Lucia. — Abstract: Geol. Soc. America, Bull., vol. 10. 
pp. 569-570, 1 fig., 1906. 
1222. Boiling lake of Dominica. — Abstract : Geol. Soc. America, Bull., vol. 
16, pp. 570-571, 1 fig., 1906. 
1223. The geology of the Guaynopita district, Chihuahua [Mexico]. — Fest- 
schrift Harry Rosenbnsch, E. Schweizerbartsehe Yerlagsbuchhandlung, Stutt- 
gart, 1906, pp. 77-95, 2 pis., 7 figs. 
1224. The collections illustrating the rocks and minerals of Manhattan 
Island. — Am. Mus. Jour., vol. 0, no. 1, pp. 6-12, 3 figs., January, 1906. 
1225. Geological notes on the western Sierra Madre of Chihuahua, Mexico. — 
Abstract: Science, new ser., vol. 23, p. 467, March 23, 1900. 
1226. [Report of the meeting of] Section E — Geology and Geography: Ameri- 
can Association for the Advancement of Science. — Science, new ser., vol. 23, 
pp. 286-291. February 23, 1906. 
Contains abstracts of papers read at the jpeeting held at New Orleans, December. 1905. 
1227. The American Association for the Advancement of Science. Special 
meeting, Ithaca, New York, June 28-July 3, 1906. Section E — Geology and 
Geography. — Science, new ser.. vol. 24. pp. 365-372, September 21, 1906. 
Gives an account of the meeting and abstracts of the papers presented. 
1228. Notes on the geology of the Guaynopita, Chihuahua, Mexico, mining 
district. — Abstract : Science, new ser., vol. 24, p. 369, September 21, 1900. 
1229. The Willamette meteorite. — Am. Mus. Jour., vol. 6, no. 3, pp. 105-116, 
4 pis., July, 1900. 
Describes the finding, subsequent history, and characters of this meteorite. 
1230. Notes on northern Mexico: Its deserts, plateaus, and canyons. — 
Philadelphia Geog. Soc, Bull., vol. 4, no. 5, pp. 1-24 (247-270), 3 pis., October, 
1906. 
1231. The Tenth International Geological Congress. — Am. Geog. Soc, Bull., 
vol. 38, no. 12, pp. 730-741, December, 1906. 
Gives an account of the Tenth International Geological Congress held in the City of 
Mexico, September, 1906, and abstracts of some of the papers presented. Includes notes 
on the geology of Mexico in the account of the excursions. 
1232. The Selma meteorite. — Am. Mus. Jour., vol. 7, no. 1, pp. 8-12, 4 figs., 
January, 1907. 
Describes the physical characters of this aerolite, found near Selma. Alabama. 
