ADVERTISEMENT. HI 
h\ PP35. Geology of the Perry basin in southeastern Maine, by G. o. Smith and David While. L905. 
107 pp., 6 pis. 
B 243. Cement materials and industry of the United States, by E. C. Eckel. 1905. 395 pp., 15 pis. 
B 246. Zinc and lead deposits of northeastern Illinois, by H. F. Bain. 1904. 56 pp., 5 pis. 
d B 247. The Fairhaven gold placers of Seward Peninsula, Alaska, by F. II. Moffit. 1905. 85 pp., 14 pis. 
B 249. Limestones of southwestern Pennsylvania, by F. G. Clapp. 1905. 52 pp., 7 pis. 
[if B 250. The petroleum fields of the Pacific coast of Alaska, with an account of the Bering River coal 
deposit, by G. C. Martin. 1905. 64 pp., 7 pis. 
k B241. The gold placers of the Fortymile, Birch Creek, and Fairbanks regions, Alaska, by L. M. 
Prindle. 1905. 89 pp., 16 pis. 
*ii| WS 118. Geology and water resources of a portion of east central Washington, by F. C. Calkins. 1903. 
96 pp., 4 pis. 
B 252. Preliminary report on the geology and water resources of central Oregon, by I. C. Russell. 
1905. 138 pp., 24 pis. 
J PP 36. The lead, zinc, and fluorspar deposits of western Kentucky, by E. 0. Ulrich and W. S. Tangier 
Smith. 1905. 218 pp., 15 pis. 
!„ PP38. Economic geology of the Bingham mining district of Utah, by J. M. Bout well, with a chapter on 
areal geology, by Arthur Keith, and an introduction on general geology, by S. F. Emmons. 
1905. 413 pp., 49 pis. 
PP 41. The geology of the central Copper River region, Alaska, by W. C. Mendenhall. 1905. 133 pp., 
20 pis. 
B 254. Report of progress in the geological resurvey of the Cripple Creek district, Colorado, by 
Waldemar Lindgren and F. L. Ransome. 1904. 36 pp. 
B 255. The fluorspar deposits of southern Illinois, by H. Foster Bain. 1905. 75 pp., t; pis. 
B 256. Mineral resources of the Elders Ridge quadrangle, Pennsylvania, by R. W. Stone. 1905. 
86 pp., 12 pis. 
B 257. Geology and paleontology of the Judith River beds, by T. W. Stanton and J. B. Hatcher, with 
a chapter on fossil plants, by F. H. Knowlton. 1905. 174 pp., 19 pis. 
PP 42. Geology of the Tonopah mining district, Nevada, by J. E. Spurr. 1905. 295 pp., 23 pis. 
WS 123. Geology and underground water conditions of the Jornada del Muerto, New Mexico, by C. R. 
Keyes. 1905. 42 pp., 9 pis. 
p WS 136. Underground waters of Salt River Valley, Arizona, by W. T. Lee. 19G5. 196 pp., 24 pis. 
PP 43. The copper deposits of Clifton-Morenci, Arizona, by Waldemar Lindgren. 1905. 375 pp., 25 pis. 
J B 265. Geology of the Boulder district, Colorado, by N. M. Fenneman. 1905. 101 pp., 5 pis. 
B 267. The copper deposits of Missouri, by H. F. Bain and E. O. Ulrich. 1905. 52 pp., 1 pi. 
PP 44. Underground water resources of Long Island, New York, by A. C. Veatch and others. 1905. 
WS 148. Geology and water resources of Oklahoma, by C. N. Gould. 1905. 
B 270. The configuration of the rock floor of Greater New York, by W. H. Hobbs. 1905. 96 pp., 5 pis. 
Correspondence should be addressed to 
The Director, 
United States Geological Survey, 
Washington, D. C. 
W October, 1905. 
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