78 THE U. S. GEOLOGICAL SURVEY 



i. To read critically and give advice as to physio- 

 graphic papers or physiographic chapters or sections in 

 other papers submitted for publication by the Survey. 



2. To consider the classification and nomenclature of 

 physiographic provinces. 



3. To prepare or make recommendations as to the 

 preparation of physiographic descriptions in popular lan- 

 guage, to be printed on the backs of topographic sheets. 



4. To consult with geologists regarding the solution of 

 physiographic problems. 



5. To formulate the usage of physiographic terms. 



6. To confer with the chiefs of sections and with the 

 chief geologist regarding physiographic work to be under- 

 taken by the Geological Survey. 



Division of Chemical and Physical Research. The Divi- 

 sion of Chemical and Physical Research, under the supervision 

 of a geologist in charge, makes such chemical and mineralogi- 

 cal determinations as are required by the general work of the 

 Survey and carries on special research work in chemistry and 

 physics. It is organized in three sections : 



1. Administrative and General 



2. Section of Chemistry 



3. Section of Physics 



Division of Mineral Resources. The Division of Mineral 

 Resources, under the direction of a geologist in charge, makes 

 field and office studies of mineral resources and industries and 

 collects and compiles for publication statistical information 

 concerning the mineral industries of the United States. It is 

 organized in the following subdivisions : 



1. Administrative and General 



2. Metals Section 



3. Non-Metals Section 



4. Field Offices 



