ADVERTISEMENT. IIT 
PP1. Preliminary report on the Ketchikan mining district. Alaska, with an introductory sketch 
of the geology of southeastern Alaska, by A. II. Brooks. L902. L20 pp., 2 pis. 
PP2. Reconnaissance of the northwestern portion of Seward Peninsula, Alaska, by A. J.Collier. 
1902. 70 pp., 11 pis. 
PP3. Geology and petrography of Crater Lake National Park, by J. S. Diller and 11. B. Patton. 
1902. 167 pp., 19] .Is. 
PP10. Reconnaissance from Fort Hamlin to Kotzebue Sound, Alaska, by way of Dull. Kanuti, Allen, 
and Kowak rivers, by W. C. Mendenhall. L902. 68pp., LOpls. 
PP 11. Clays of the United States east of the Mississippi River, by Heinrich Ries. 1903. 298pp.,9pls. 
PP 12. Geology of the Globe copper district, Arizona, by F. L. Ransome. L903. L68 pp., 27 pis. 
PP 13. Drainage modifications in southeastern Ohio and adjacent parts of West Virginiaand Ken- 
tucky, by W. G. Tight, 1903. Ill pp., 17 pis. 
B 208. Descriptive geology of Nevada south of the fortieth parallel and adjacent portions of Cali 
fornia, by J. E. Spurr. 1903. 229 pp., 8 pis. 
B 209. Geology of Ascutney Mountain, Vermont, by R, A. Daly. L903. 122 pp., 7 pis. 
WS78. Preliminary report on artesian basins in southwestern Idaho and southeastern Oregon, by 
I. C. Russell. 1903. 51 pp., 2 pis. 
PP 15. Mineral resources of the Mount Wrangell district, Alaska, by W. C. Mendenhall and F. C. 
Schrader. 1903. 71 pp., 10 pis. 
PP 17. Preliminary report on the geology and water resources of Nebraska west of the one hundred 
and third meridian, by N. H. Darton. 1903. 69 pp., 43 pis. 
B 217. Notes on the geology of southwestern Idaho and southeastern Oregon, by I. C. Russell. 1903. 
83 pp.. IS pis. 
B 219. The ore deposits of Tonopah, Nevada (preliminary report), by J. E. Spun-. 1903. 31 pp., 1 pi. 
PP 20. A reconnaissance in northern Alaska in 1901, by F. C. Schrader. 1904. 139 pp., 16 pis. 
PP 21. The geology and ore deposits of the Bisbee quadrangle, Arizona, by F. L. Ransome. 1904. 
168 pp., 29 pis. 
WS 90. Geology and water resources of part of the lower James River Valley, South Dakota, by J. E. 
Todd and C. M. Hall. 1904. 47 pp., 23 pis. 
PP 25. The copper deposits of the Encampment district, Wyoming, by A. ('. Spencer. 1904. 107 pp., 
2 pis. 
PP 26. Economic resources of northern Black Hills, by J. D. Irving, with chapters by S. P. Emmons 
and T. A. Jaggar, jr. 1904. 222 pp., 20 pis. 
PP 27. Geological reconnaissance across the Bitterroot Range and the Clearwater Mountains in Mon- 
tana and Idaho, by Waldemar Lindgren. 1904. 122 pp., 15 pis. 
PP31. Preliminary report on the geology of the Arbuckle and Wichita mountains in Indian Terri- 
tory and Oklahoma, by J. A. Taff, with an appendix on reported ore deposits in the Wichita 
Mountains, by H. F. Bain, 1904. 97 pp., 8 pis. 
B 235. A geological reconnaissance across the Cascade Range near the forty-ninth parallel, by »;. < >. 
Smith and F. C. Calkins. 1904. 103 pp., 4 pis. 
B 236. The Porcupine placer district, Alaska, by C. W. Wright, 1904. 35 pp., 10 pis. 
B 237. Igneous rocks of the Highwood Mountains, Montana, by L. V. Pirsson. 1904. 208 pp., 7 pis. 
B 238. Economic geology of the Iola quadrangle, Kansas, by G. I. Adams. Erasmus Haworth, and 
W. R. Crane. 1904. 83 pp., 11 pis. 
PP 32. Geology and underground water resources of the central Great Plains, by N. H. Darton. 1905. 
- pp., 72 pis. 
WS 110. Contributions to hydrology of eastern United States, 1904; M. G. Fuller, geologist in charge. 
1905. —pp., 5 pis. 
B 242. Geology of the Hudson Valley between the Hoosic and the Kinderhook, by T. Nelson Dale. 
1904. 63 pp., 3 pis. 
PP 34. Delavan lobe of the Lake Michigan Glacier of the Wisconsin stage of glaciation and associated 
phenomena, by W. C. Alden. 1904. 106 pp., 15 pis. 
PP 35. Geology of the Perry Basin in southeastern Maine, by G. O. Smith and David White. L905. 
107 pp., 6 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 northeastern Illinois, by H. F. Bain. 1904. 56 pp., 5 pis. 
B 247. The Fairhaven gold placers of Seward Peninsula, Alaska.by F. H. Moflit. 1905. 85 pp., 1 1 pis. 
B 249. Limestones of southwestern 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 coal 
deposits, by G. C. Martin. 1905. — 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. 
Correspondence should be addressed to 
The Director, 
United States Geological Survey, 
\y vshington, i). ('. 
Ferruary, 1905. 
