INDEX 



163 



propriation for, 2; geographical, 

 2-5; of fortieth parallel, 3; of 

 the territories, 3; Rocky Moun- 

 tain region, 4; west of the one 

 hundredth meridian, geographical, 

 5; appropriations for, 5; in 

 Alaska, 12-13; land subdivision, 

 20; topographic, in connection 

 with the war, 27; topographic, 

 31-39; geologic, 39-43; surface 

 waters, 52-54; ground waters, 

 54-57- 



Tenth census, aid in collecting sta- 

 tistics of mines and mining, 15. 



Territories, survey of, 3. 



Test drilling, for ground waters, 54. 



Topographic atlas sheets, publica- 

 tion of, 33-34. 



Topographic branch, offices of, 74. 



Topographic maps, authority to 

 prepare, 14, 31; authority to 

 print and sell, 20; for war pur- 

 poses, 27; authority to sell to 

 general public, 32; detail and 

 quality of, 33 ; special preparation 

 of, 35; extent of use, 35; Alaska, 

 value of, 36; cost of, 36-37. 



Topographic surveys, importance of, 

 19, 20; on public lands, 22; in 

 connection with the war, 27; 

 methods employed in extending, 



31-30; cost and progress, 36-37. 

 "Tungsten Minerals and Deposits," 

 So. 



Underground waters, examination 

 of, for military encampments, 28. 



"Useful Minerals of the United 

 States," 50. 



Walcott, C. W., director of Survey, 

 20. 



War Department, surveys made by, 

 2 > 3 j 5> agreement with Survey 

 for expending appropriation for 

 national defense, 27. 



Water analyses, geochemical inter- 

 pretation of, 48. 



Water-power sites, withdrawn from 

 entry, 64; systematic classifica- 

 tion of, 68. 



Water resources, survey of, 51-57. 



Water resources branch, 79-81. 



"Water Supply Papers," 53. 



Water utilization and control, in- 

 vestigation of problems, 57-58. 



Water utilization division, 81. 



Weather Bureau, stream-gaging sta- 

 tions maintained in cooperation 

 with Survey, 52. 



Wheeler, Lieut. G. M., in charge of 

 geographical survey, 5. 



