Geology and Natural History. 235 



restoration of such as were found to be not underlaid by valuable 

 deposits. The work involves also the performance of various 

 executive and advisory functions connected with the classification 

 and valuation of the public lands. 



The mining and technologic work of the Survey, which in the 

 last few years has assumed large importance, was transferred on 

 July 1, 1910, to the newly established Bureau of Mines (see v. xxx, 

 pp. 292, 419). Thus another child of the Geological Survey, 

 having grown to adult proportions and demonstrated its useful- 

 ness, has been launched on an independent career. No small part 

 of the great value which the Survey has been to the nation con- 

 sists in the foresight, efficiency, and high scientific grade with 

 which new branches of government work have been developed 

 under the care of that organization. The increase in the corre- 

 spondence of the Geological Survey and in the distribution of its 

 publications is a measure of the increasing appreciation by the 

 people of the work which is done. The correspondence increased 

 more than 20 per cent over that of the previous year and the 

 total number of reports and maps distributed has increased more 

 than 13 per cent. The publications of the Survey during the 

 year measure a part of its returns for the money expended. 

 They consisted of 4 professional papers, 47 bulletins, 18 water 

 supply papers, one volume on mineral resources, 6 geologic folios 

 and 94 topographic maps. j. b. 



2. Publications of the U. S. Geological Survey. — Recent 

 publications of the TJ. S. Geological Survey are noted in the fol- 

 lowing list (continued from vol. xxx, p. 417). The thirty-first 

 Annual Report of the Director is noticed above. 



Topographic Atlas. — Seventy-three sheets. 



Folio, No. 174. Johnstown Folio, Pennsylvania; by W. C. 

 Phalen. Pp. 15, with 1 columnar section, and 3 maps. 



Sacramento Folio, California ; by W. Lindgren. Pp. 3, 4 

 maps. 



Professional Paper, No. 72. Denudation and Erosion in 

 the Southern Appalachian Basin ; by Leonidas C. Glenn. Pp. 

 137, 21 plates, 1 figure. 



Bulletins. — No. 430. Contributions to Economic Geology 

 (Short Papers and Preliminary Reports, in part earlier issued as 

 separates.) 1909. Part I. Metals and Nonmetals except Fuels. 

 C. W. Hates and Waldemar Lindgren, geologists in charge. 

 Pp. 653, 14 plates, 75 figures. 



No. 431-A. Advance Chapter from Contributions to Eco- 

 nomic Geology, 1909. Petroleum and Natural Gas ; by A. G. 

 Leonard, H. E. Gregort, C. W. Washburne, and Robert 

 Anderson. Pp. 83, 3 plates, 1 figure. 



No. 433. Geology and Mineral Resources of the Solomon and 

 Casadepaga Quadrangles, Seward Peninsula, Alaska ; by Philip 

 S. Smith. Pp. 234, 16 plates, 26 figures. 



No. 436. The Fauna of the Phosphate Beds of the Park City 

 Formation in Idaho, Wyoming, and Utah ; by George H. Girty. 

 Pp. 82, 7 plates. 



