Geology and Natural History. 469 



Alaska, the hydrographic work, the reorganization of the Geologic 

 Branch, the division of Mines and Mining, the Insular surveys. 



The reorganization of the Geological Branch of the Survey has 

 become necessary on account of the growth and complexity of 

 the work and the increased demands upon the director in admin- 

 istrating the whole bureau. The several branches of the geologic 

 work were placed in charge of specialists, who should supervise 

 the scientific investigations of their several divisions. 



The following divisions were made and officers placed in charge : 



Division of Areal Geology : Bailey Willis, Geologist in charge. 



Division of Pleistocene Geology : T. C. Chamberlin, Geologist 

 in charge. 



Division of Paleontology : T. W. Stanton, Paleontologist in 

 charge. 



Division of Pre-Cambrian and Metamorphic Geology: C. R. Van 

 Hise, Geologist in charge. 



Division of Mining and Mineral Resources : D. T. Day, Geologist 

 in charge. 



Division of Economic Geology: S. F. Emmons, Geologist in 

 charge of section of Metalliferous Ores : C. W. Hayes, Geol- 

 ogist in charge of section of non-Metalliferous Economic 

 Deposits, etc. 



Division of Physical and Chemical Research : G. F. Becker, 

 Geologist in charge. 



The authority of these chiefs of division is restricted to the 

 supervision of the scientific work, the administrative direction 

 remaining in the hands of the director. At the same time the 

 individual geologist is left free to make use of the facts observed 

 within his own field. 



The Director explains at some length the relation of the 

 Government Survey to Mines and Mining, and urges the provi- 

 sion of means for more fully organizing and conducting a Divi- 

 sion of Mines and Mining. He says, p. 45 : "The establishment 

 of a division of mines and mining within the survey would 

 broadeu the scope of its work and admit of a more direct applica- 

 tion of the energies of the survey to the mining industry. In a 

 general way such a division should be charged with the promo- 

 tion of the mining industry of the country as a whole, as far as 

 it can be done by a government organization, and in such way 

 as not to interfere with the work of state organizations on the 

 one hand or with the professional business of individuals on the 

 other." 



In response to a resolution passed by the Senate, the Director 

 submitted a report to the Secretary of the Interior on the present 

 condition of surveys in the islands now under the jurisdiction of 

 the United States ; together with recommendation of plans for 

 furthering the topographic and geological surveys in Porto Rico, 

 the Hawaiian Islands, the Philippines and Cuba, 



The summary account of the detailed work of the Survey 



