BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1006-1907. 31 
Bowman, H. L. 
274. Note on the refractive indices of pyromorphite, mimetite, and vanadi- 
nite. — Mineralog. Mag., vol. 13, pp. 324-329, December, 1903. 
Bowman, Isaiah. 
275. Northward extension of the Atlantic preglacial deposits. — Am. Jour. 
Sci., 4th ser., vol. 22, pp. 313-325, 3 figs., October, 1906. 
276. Problems of water contamination. — U. S. Geol. Survey, W.-S. and Irrig. 
Paper no. 160, pp. 92-95, 1906. 
The discussion has especial reference to underground waters. 
Well records on Long Island. — See Yeatch and Bowman, no. 2441. 
Bowman, Isaiah, and Reeds, Chester Albert. 
277. Water resources of the East St. Louis district. — Illinois State (ieol. 
Survey, Bull. no. 5, 128 pp., 4 pis. (inch 1 map), 11 figs., 1907. 
Describes physiographic features, the stratigraphy, and the water resources. 
Bownocker, John Adams. 
278. Salt deposits and the salt industry in Ohio. — Ohio Geol. Survey, 4th ser., 
Bull. no. 8, 42 pp., 6 figs., 1906. 
Reviews the salt industry in Ohio and describes present operations. Includes notes 
on the composition of the brines, the geological horizon of the salt beds, and well 
records. 
Bowron, William M. 
The origin of Clinton red fossil-ore in Lookout Mountain, Alabama. — Am. 
Inst. Min. Eng., Trans., vol. 36, pp. 587-604, 3 figs.. 1906 (Bi-Mo. Bull. no. 6, pp. 
1245-1262, 3 figs., 1905).— See Bowron, 1, page 44 of Bulletin no. 301, U. S. 
Geol. Survey. 
Boyle, O. M., Jr. 
279. The Greenwater mining district, California. — California Jour. Tech., 
vol. 10, no. 1, pp. 29-32, 2 figs., August, 1907. 
Boynton, C. H. 
280. The Little Rockies mining district. — Eng. and Min. Jour., vol. 81, p. 181, 
2 figs., January 27, 1906. 
Describes the general geology and the occurrence and character of tbe gold ores. 
Branner, John C. 
281. Geology in its relation to topography. — /// Beahan, Willurd. The Field 
Practice of Railway Location, Chapter 5, pp. 115-141, 19 figs., 1904. 
282. The university training of engineers in economic geology. — Econ. 
Geology, vol. 1, no. 3, pp. 2S9-294, December-Janaury, 1905-1906. 
283. A bibliography of clays and the ceramic arts. Published by the Am. 
Ceramic Soc, 1906. 451 pp. 
284. [Fault lines in the Santa Cruz Mountains, California. 1 — Min. and Sci. 
Press, vol. 92, p. 347, May 26, 1906. 
Discusses the movements along the fault lines which produced the California earth- 
quake. 
285. The California earthquake: movements along the Santa Cruz fault 
line. — Palo Altan, May 1, 1906 [not seen] ; Eng. News, vol. 55, no. 20, p. 542, May 
17, 1906; Mines and Minerals, vol. 26, no. 12, p. 536. July, 1906. 
286. The relations of the drainage of the Santa Clara Valley. California, t<> 
that of the Pajaro River. — Abstract : Science, new ser.. vol. 24. pp. :;<'.'.» .".7". 
September 21, 1906; Am, Assoc, Adv. Sci., Proc, vol. 5(H>7, V- 270, L907, 
