172 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1901 
Smith, Eugene A. — Continued. 
2226. On some post -Eocene and other formations of the Gulf region of the 
United States.— Science, new ser., vol. 23, pp. 481-491, March 30, 1906. 
Describes the progress of geologic investigation of the Gulf coastal region since 1881, 
and particularly the stratigraphic position, relations, and genesis of the Grand Gulf 
formation. 
2227. Sketch of the mineral resources of Alabama. — In "The Alabama Op- 
portunity," published by the [Alabama] Department of Agriculture and Indus- 
tries, pp. 169-184 [1906]. 
2228. On some post-Eocene and other formations of the Gulf region of the 
United States. — Am. Assoc Adv. Science, Proc, vol. 55, pp. 357-374, 1906. 
Discusses particularly the stratigraphic position, character, and genesis of the Grand 
Gulf formation. 
2229. The underground water resources of Alabama. — Alabama Geol. Sur- 
vey [Bull. no. 9 (?)], 388 pp., 30 pis., 23 figs., 1907. 
Describes the physical geography, geology, and climate of the State, the occurrence, 
character, and geologic horizon of the underground waters of each county, and dis- 
cusses the classification and composition of the waters. 
Smith, George Otis. 
2230. Two occurrences of graphite [in Maine]. — Abstract: Science, new ser., 
vol. 23, pp. 915-916, June 15, 1906. 
2231. Graphite in Maine.— U. S. Geol. Survey, Bull. no. 285, pp. 480-483, 
1900. 
Describes the occurrence and character of two deposits of graphite in western Maine, 
and discusses their origin and economic value. 
2232. Review of " Economic Geology of the United States," by H. Ries. — 
Econ. Geol., vol. 1, no. 7, pp. 719-725, 1906. 
2233. The occurrence of granite in Maine. — U. S. Geol. Survey, Bull. no. 
313, pp. 7-12, 1907. 
2234. Note on a mineral deposit in Maine. — U. S. Geol. Survey, Bull. no. 
315, pp. 118-119, 1907. 
2235. Twenty-eighth annual report of the Director of the United States 
Geological Survey to the Secretary of the Interior for the fiscal year ended 
June 30, 1907. Washington, 1907. 80 pp., 1 pi. 
An administrative report outlining the operations of the U. S. Geological Survey 
during the fiscal year ended June 30, 1907. 
2236. Methods of igneous intrusion. — Abstract : Science, new ser., vol. 25, 
p. 623, April 19, 1907. 
2237. Relations of Geological Survey to mining industry. — Min. World, vol. 27, 
pp. 924-926, November 23, 1907. 
2238. The possibilities and limitations of Geological Survey work as ap- 
plied to mining industry. — Min. and Sci. Press, vol. 95, pp. (552-654, November 
23, 1907. 
2239. The work of the U. S. Geological Survey.— Eng. and Min. Jour., vol. 
84, pp. 1019-1020, November 30, 1907. 
The production in the United States, in 1905, of asbestos, of graphite, and of 
mica. — See no. 2418. 
The production in the United States in 1906 of graphite. — See no. 2419. 
Smith, George Otis, and Calkins, Frank Cathcart. 
2240. Description of the Snoqualmie quadrangle [Washington]. — U. S. Geol. 
Survey, Geol. Atlas of U. S., folio no. 139, 14 pp., 3 maps, 1 columnar-sections 
sheet, 1906. 
Describes the geographic and physical features, the occurrence, character, and relations 
of pre-Tertiary and Tertiary sedimentary and igneous rocks, the geologic structure and 
history, and the economic resources, chiefly coal. 
