ORGANIZATION 75 



Each of the five territorial divisions has a geographer in 

 charge who reports to the chief geographer. Each geographer 

 in charge has supervision of all field and office work on the 

 topographic maps prepared in his division. Each division 

 maintains headquarters in the field during the field season, 

 the chief geographer and most of his force returning to the 

 Washington office at its close for the execution of work of 

 preparing the maps for publication. Inspectors, whose func- 

 tions are to examine field work in progress and to aid in the 

 maintenance of high and uniform standards, assist the chief 

 geographer in the technical supervision of the work of the 

 branch. 



The operations of this branch do not extend to Alaska, all 

 topographic work in that territory being carried on by the 

 Division of Alaskan Mineral Resources in the Geologic 

 Branch. 



Geologic Branch. The Geologic Branch of the Survey is 

 under the charge of the chief geologist. The number of em- 

 ployees under his direction on June 30, 19 17, was 245, the 

 largest number employed in any of the six branches of the 

 Survey. In addition to this number 61 persons, most of them 

 geologists, were employed occasionally by this branch. It is 

 organized in four divisions : 



1. Division of Geology 



2. Division of Chemical and Physical Research 



3. Division of Mineral Resources 



4. Division of Alaskan Mineral Resources 



Division of Geology. The Division of Geology is under the 

 immediate direction of the chief geologist, who is also head 

 of the Geologic Branch. 



The division is organized into sections corresponding to 

 the several types of field and research work it performs. 

 These sections do work in areal, glacial and coastal plain 



