11 ADVERTISEMENT. 



PP 10. Reconnaissance from Fort Hamlin to Kotzebue Sonnd, Alaska, by way of Dall, Kanuti, Allen, 



and Kowak rivers, by W. C. Mendenhall. 1902. 08 pp., 10 pis. 

 PP 11. Clays of the United States east of the Mississippi River, by Heinrich Ries. 1903. '298 pp., 9 pis. 

 PP 12. Geology of the Globe copper district, Arizona, by F. L. Ransome. 1903. 168 pp., 27 pis. 

 B 212. Oil fields of the Texas-Louisiana Gulf Coastal Plain, by C. W. Hayes and ^Villiam Kennedy. 



1903. 174 pp., 11 pis. 

 B 213. Contributions to economic geology, 1902; S. F. Emmons, C. W. Hayes, geologists in charge. 



1903. 449 pp. 



PP 1.5. The mineral resources of the Mount Wrangell district, Alaska, by W. C. Mendenhall and 



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. 

 PP 20. 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. 168 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-Colorado, by A. C. Spencer. 1904, 



107 pp., 2 pis. 

 B 22.5. Contributions to economic geology, 1903; S. 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. F. 

 Emmons and T. A.. Jaggar, jr. 1904. 222 pp., 20 pis. 



PP 27. A geological reconnaissance across the Bitterroot Range and Clearwater Mountains in Mon- 

 tana and Idaho, by Waldemar Lindgren. 1904. 123 pp., 15 pis. 



B 229. Tin deposits of the York region, Alaska, by A. J. Collier. 1904. 61 pp., 7 pis. 



B 236. 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, and 

 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 H. Foster Bain. 1904. 56 pp., 5 pis. 



B 247. The Fairhaven gold placers, Seward Peninsula, Alaska, by F. H. MofRt. 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 coal 

 deposit, by G. C. Martin. 190.5. —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. 



PP 36. The lead, zinc, and fluorspar deposits of western Kentucky, by E. O. Ulrich and W. S. T. Smith. 

 1905. — pp., 15 pis. 



PP 38. Economic geology of the Bingham mining district of Utah, by J. M. Boutwell, with a chapter 

 on areal geology, by Arthur Keith, and an introduction on general geology, by S. F. Emmons. 

 190.5. —pp., — pis. 



PP 41. The geology of the central Copper River region, Alaska, by W. C. Mendenhall. 1905. — pp., 

 — pis. 



B 2.54. Report of progress in the geological resurvey of the Cripple Creek district, Colorado, by Walde- 

 mar Lindgren and F. L. Ransome. 1904. 36 pp. 



B 2.55. The fluorspar deposits of southern Illinois, by H. Foster Bain. 1905. 75 pp., 6 pis. 



SERIES B, DESCRIPTIVE GEOLOGY. 



B 23. Observations on the juncti]n between the Eastern sandstone and the Keweenaw series on 



Keweenaw Point, Lake Superior, by R. D. Irving and T. C. Chamberlin. 1885. 124 pp., 



17 pis. 

 B 33. Notes on geology of northern California, by J. S. Diller. 1886. 23 pp. (Out of stock.) 

 B 39. The upper beaches and deltas of Glacial Lake Agassiz, by Warren Upham. 1887. 84 pp., 1 pi. 



(Out of stock.) 

 B 40. Changes in river courses in Washington Territory due to glaciation, by Bailey Willis. 1887. 



10 pp., 4 pis. (Out of stock.) 

 B 45. The present condition of knowledge of the geology of Texas, by R. T. Hill. 1887. 91 pp. (Out 



of stock.) 

 B 53. The geology of Nantucket, by N. S. Shaler. 1889. 55 pp., 10 pis. (Out of stock.) 

 B 57. A geological reconnaissance in southwestern Kansas, by Robert Hay. 1890. 49 pp., 2 pis. 

 B 58. The glacial boundary in western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois, by G. F. 



Wright, with introduction by T. C. Chamberlin. 1890. 112 pp., 8 pis. (Out of^stock.) 

 B. 67. The relations of the traps of the Newark system in the New Jersey region, by N. H. Darton. 



1890. 82 pp. (Out of stock.) 

 B 104. Glaciation of the Yellowstone Valley north of the Park, by W. H. Weed. 1893. 41 pp., 4 pis. 



