II ADVERTISEMENT. 
B 212. Oil fields of the Texas-Louisiana Gulf Coastal Plain, by C. W. Hayes and William Kennedy, 
1903. 174 pp., 11 pis. 
B 213. Contributions to economic geology, 1902; S. F. Emmons, ('. W. Hayes, geologists in chargl 
1903. 449 pp. 
PP 15. The mineral resources of the Mount Wrangell district, Alaska, by W. C. Mendenhall am 
F. C. Schrader. "1903. 71 pp., 10 pis. 
B 218. Coal resources of the Yukon, Alaska, by A. J. Collier. 1903. 71 pp.. 6 pis. 
B 219. The ore deposits of Tonopah, Nevada (preliminary report), by J. E. Spurr. 1903. 31 pp., 1 pi 
PP20. A reconnaissance in northern Alaska, in 1901, by F. C. Schrader. 1904. 139 pp., 16 pis. 
PP 21. Geology and ore deposits of the Bisbee quadrangle, Arizona, by F. L. Ransome. 1904. 1G8 pp, 
29 pis. 
B 223. Gypsum deposits of the United States, by G. I. Adams and others. 1904. 129 pp., 21 pis. 
PP 24. Zinc and lead deposits of northern Arkansas, by G. I. Adams. 1904. 118 pp., 27 pis. 
PP 25. Copper deposits of the Encampment. district, Wyoming, by A.C.Spencer. 1904. 107pp.,2pB 
B 22. r >. Contributions to economic geology, 1903; 8. F. Emmons, C. W. Hayes, geologists in charge. 
1904. 527 pp., 1 pi. 
PP 26. Economic resources of the northern Black Hills, by J. D. Irving, with contributions by S. 
Emmons and T. A. Jaggar, jr. 1904. 222 pp., 20 pis. 
PP27. A geological reconnaissance across the Bitterroot Range and Clearwater Mountains in Moi 
tana and Idaho, by Waldemar Lindgren. 1904. L23 pp., 15 pis. 
B229. Tin deposits of the York region, Alaska, by A. .1. Collier.. 1901. 61 pp., 7 pis. 
B 230. The Porcupine placer district, Alaska, by C. W. Wright. 1904. 35 pp., 10 pis. 
B 238. Economic geology of the lola quadrangle, Kansas, by G. I. Adams. Erasmus Haworth, an 
W. R. Crane. 1904. 83 pp., 11 pis. 
B 243. Cement materials and industry of the United States, by E. C. Eckel. 1905. —pp.. 15 pis. 
B 246. Zinc and lead deposits of northwestern Illinois, by II. Foster Bain. 1904. 56 pp., 5 pis. 
B 247. The Fairhaven gold placers, Sew aid Peninsula, Alaska, by F. H. Moffit. 1905. 85 pp., 14 pis. 
B 249. Limestones of southeastern Pennsylvania, by F. G. Clapp. 1905. 52 pp., 7 pis. 
B 250. The petroleum fields of the Pacific coast of Alaska, with an account of the Bering River coa 
deposits, by G. C. Martin. 1905. 65 pp., 7 pis. 
B 251. The gold placers of the Fortymile. Birch Creek, and Fairbanks regions, Alaska, by L. M 
Prindle. 1905. 89 pp., 16 pis. 
WS 117. The lignite of North Dakota and its relation to irrigation, by F. A. Wilder. 1905. 59 pp 
8 pis. 
PP36. The lead, zinc, and fluorspar deposits of western Kentucky, by E. 0. Ulrich and W. S. 
Smith. 1905. —pp., 15 pis. 
PP 38. Economic geology of the Bingham mining district of Utah, by J. M. Boutwell, with a chapte 
on areal geology, by Arthur Keith, and an introduction on general geology, by £ 
Emmons. 1905. — pp., 49 pis. 
PP 41. The geology of the central ("upper River region, Alaska, by W. C. Mendenhall. 1905. — pp 
-pis. 
B 254. Report of progress in the geological resurvey of the Cripple Creek district, Colorado, by Waldj 
mar Lindgren and F. L. Ransome. 1904. 36 pp. 
B 255. The fluorspar deposits of southern Illinois, by H. Foster Bain. 1905. 75 pp., 6 pis. 
B 250. Mineral resources of the Elders Ridge quadrangle, Pennsylvania, by R. W. Stone. 1905. — pp 
- pis. 
B 259. Report on progress of investigations of mineral resources of Alaska, in 1904, by A. H. Brook 
and others. 1905. 196 pp., 3 pis. 
Correspondence should be addressed to 
Tin: Director, 
United States Geological Survey, 
Washington, D. C. 
April, 1905. 
