Geology and Mineralogy. 403 



No. 247. — The Fairhaven Gold Placers, Seward Peninsula, 

 Alaska ; b} T Fred H. Moffit. Pp. 85, 14 plates, 2 figures. 



No. 248. — A Gazetteer of Indian Territory ; by Henry Gan- 

 nett. Pp. 70. 



No. 251. — The Gold Placers of the Fortymile, Birch creek and 

 Fairbanks Region, Alaska; by Louis M. Prindle. Pp. 89, 16 

 plates. 



No. 253. — Comparison of a Wet and Crucible-fire methods for 

 the Assay of Gold Tellurite Ores, with notes on the errors 

 occurring in the operations of fire assay and parting ; by W. F. 

 Hillebrand and E. T. Allen. Pp. 30. 



No. 254. — Report of Progress in the Geological Resurvey of 

 the Cripple Creek District, Colorado ; by Waldemar Lindgren 

 and Frederick Leslie Ransome. Pp. 34. — Besides the details 

 of more purely economic importance it is noted that in the deeper 

 workings much annoyance and even serious interference with 

 work has been experienced from mine gases, often in spite of 

 vigorous measures for ventilation. The analyses showed the gas 

 to be a mixture of nitrogen with about 20 per cent, carbon 

 dioxide and a small amount of oxygen. The authors believe 

 that it represents the last exhalations from the throat of the 

 extinct Cripple Creek volcano. 



No. 256. — Mineral Resources of the Elders Ridge Quadrangle, 

 Pennsylvania ; by Ralph W. Stone. 86 pp., 12 plates, 4 figures. 



No. 257. — Geology and Paleontology of the Judith River Beds; 

 by T. W. Stanton and J. B. Hatcher ; with a chapter on the 

 Fossil Plants ; by F. H. Knowlton. Pp. 174, 19 plates. 



No. 262. — Contributions to Mineralogy from the U. S. Geolog- 

 ical Survey; by F. W. Clarke, W. F. Hillebrand and others. 

 Pp. 147, 12 text-figures. 



No. 263. — Methods and Costs of Gravel and Placer Mining in 

 Alaska ; by Chester Wells Purington. Pp. 273, 42 plates, 

 49 figures. 



No. 266. — Paleontology of the Malone Jurassic Formation of 

 Texas ; by F. W. Cragin ; with stratigraphic notes on Malone 

 Mountain and the surrounding region near Sierra Blanca, Texas ; 

 by T. W. Stanton. Pp. 172, 29 plates. 



No. 267. — The Copper Deposits of Missouri ; by H. F. Bain 

 and E. O. Ulrich. Pp. 52. 



No. 271. — Bibliography and Index of North American Geol- 

 ogy, Paleontology, Petrology and Mineralogy for the year 1904; 

 by Fred Botjghton Weeks. Pp. 218. 



Water Supply and Irrigation Papers. — Nos. 97, 98, 99, 100, 

 103, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 

 119, 124, 125, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 141, 

 143, 144, 146, 149. 



2. Osteology of Baptanodon (Marsh) ; by C. W. Gilmore. 

 Memoirs of the Carnegie Museum, Vol. II, No. 2, August, 1905. 

 — Mr. Gilmore's excellent paper gives us for the first time a satis- 

 factory discussion of the osteological structure of the Jurassic 



