BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 171 
Silver, L. P. 
2212. The Animikie iron range. — Ontario, Bur. Mines, Rept., 1906, vol. 15, 
pt 1, pp. 156-172, 6 figs., 1 map, 1906. 
Describes the occurrence, character, and relations of the pre-Cambrian rocks, and the 
character and composition of the iron ores, and discusses their origin. 
Sinclair, William J. 
2213. Some Edentate-like remains from the Mascall beds of Oregon. — Cali- 
fornia Univ., Dept. Geol., Bull., vol. 5, no. 2, pp. 65-66, 3 figs., 1908: 
2214. Volcanic ash in the Bridger beds of Wyoming. — Am. Mus. Nat. Hist.. 
Bull., vol. 22, pp. 273-280, 4 pis., 1906. 
Describes the general features of the geology, the lithologic and stratigraphic classifi- 
cation of the Bridger group, and the mode of accumulation of the Bridger beds. 
Tertiary faunas of the John Day region. — See Merriam and Sinclair, no. 1717. 
Slichter, Charles S. 
2215. The underflow in Arkansas Valley in western Kansas. — U. S. Geol. 
Survey, W.-S. and Irrig. Paper no. 153, 90 pp., 3 pis., 24 figs., 1906. 
Slichter, Charles S., and Wolff, H. C. 
2216. The underflow of the South Platte Valley.— IT. S. Geol. Survey, W.-S. 
and Irrig. Paper no. 184, 42 pp., 13 figs., 1906. 
Sloan, Earle. 
2217. A preliminary report on the clays of South Carolina. — South Carolina 
Geol. Survey, ser. 4, Bull. no. 1, 175 pp., 8 pis., 1904. 
2218. Geology and mineral resources [of South Carolina]. — Handbook of 
South Carolina, chapter 5, pp. 77-145, illus., South Carolina, State Dept. of 
Agriculture, Commerce, and Immigration, 1907. 
Slocom, Arthur YV. 
2219. A list of Devonian fossils collected in western New York, with notes 
on their stratigraphic distribution. — Field Columbian Mus., Geol. Ser., vol. 2, 
no. 8, pp. 257-265, 2 pis., 1906. 
2220. New processes of taking impressions of natural molds of fossils. — 
Science, new ser., vol. 25, pp. 591-592, April 12, 1907. 
2221. New crinoids from the Chicago area. — Field Columbian Mus., Geol. 
Ser., vol. 2, no. 10, pp. 273-306, 6 pis., 11 figs., 1907 [issued. Jan. 3, 1908]. 
Hypsocrinus, a new genus of crinoids from the Devonian. — See Springer and 
Slocom, no. 2268. 
Smith, Carl D. 
Ozokerite deposits in Utah.— See Taff and Smith, no. 2338. 
Smith, Essie Alma. 
2222. Development and variation of Pentremites conoideus. — Indiana, Dept. 
Geol. and Nat. Pes., 30th Ann. Kept., pp. 1219-1242, 3 figs., 1906. 
Includes a discussion of the dwarfing of the fauna of the Salem limestone. 
Smith, Eugene A. 
2223. Memoir of Henry McCalley. — Geol. Soc. America, Bull., vol. 16, pp. 
555-558, 1906. 
Includes a list of his writings. 
2224. The overlap of the St. Stephens limestone on the lower Tertiary for- 
mations in Crenshaw and Pike counties, Ala. — Abstract: Science, now ser., 
vol. 23, pp. 287 288, February 23, 1 !)<)(>. 
2225. On the Jackson anticlinal in Clarke County, Ala. --Abstract : Science, 
new ser., vol. 23, p. 288, February 23, 1900. 
