EEPORTS. 



125 



SCALE OF FIELD WORK. 



The scale upon which the field work is executed is commonly larger 

 than that upon which the maps are to be published. In the northeastern 

 states it is set at 1:45000, the scale of publication being 1:62500. In 

 the southeastern States it is approximately 1 mile to an inch, the scale of 

 publication being for most sheets 1:125000, though certain sheets in Mary- 

 land and Florida have been published on the scale 1:62500. In the Missis- 

 sippi valley it is uniformly about double that of publication. Where the 

 scale of publication is 1 : 62500, the scale of field work is 2 inches to 1 mile, 

 and where the former is 1:125000, the latter is 1 mile to an inch. In the 

 western states, the scale of publication being 1:125000, the field sheets are 

 made uniformly on the scale of 1 mile to an inch. 



REPORTS. 



Each field party is required to make a monthly report to the chief of 

 division and the chief topographer upon the progress of the work in his 

 party during the month. In the case of topographic parties these reports 

 are made upon printed forms, of which the following is a sample: 



MONTHLY REPORT OF TOPOGRAPHIC PARTY. 



[To bo made out in duplicate promptly at the close of each month, one copy to be sent to the geographer 

 in charge of the division and one copy to the chief topographer.] 



Department of the Interior, U. S. Geological Survey, 



ISH 



Sir: The following report for the month of 

 topographic party under my charge: 



Names and positions of all members of party. 

 Instruments used. 



189 , includes a statement of progress of the 



Expended— for salaries, $- 

 Yours respectfully, 



- ; all other expenses, $- 



total, $- 



