THE USE BOOK. 187 



progress and notable happenings of his Forest. This constitutes 

 the supervisor's service report which will be examined and 

 signed by each inspector who visits the Forest. 



It is essential that the supervisor's office be equipped with 

 accurate large-scale maps of his Forest % both for the informa- 

 tion of Forest users and for the supervisor's records. As 

 far as possible black and white photographic prints or litho- 

 graphic prints, Unjted^JStates Geological Survey topographic? 

 sheets, ^nd Land Qfflce^plats will be furnished from the Wash- 

 ington office on request. As fast as maps are supplied they 

 should be used to record much of the detail of progress ^gf 

 timber sales and other Forest business. 



THE FOREST ATLAS. 



As rapidly as possible the Forest Service will furnish to 

 Forest officers standard maps of the National Forests, showing 

 topography, drainage, improvements, etc. 



The central nart of the ni;m svstPm is n Forest Atlas. The 

 Atlas w T ill aim to show all data of use in connection with the 

 administration of the Forests. Copies of the Atlas sheets for 

 a" IHlrflcular Forest, as soon as completed, will be placed in the 

 hands of the supervisor. 



Data to be recorded in the Forest Atlas will be obtained by 

 the field force of the Service, and will usually be mapped on 

 township plats, or Atlas sheets, following the scheme of the 

 Forest Atlas legend page, which will be furnished to all mem- 

 bers of the field force of the Service. The data will be trans- 

 ferred from these plats to the Atlas, or the township plats or 

 sheets, where mapped with sufficient accuracy and care, will 

 be inserted in the Atlas sheets directly. 



The usual scale for the Atlas will be 1 inch to 1 mile, oil 

 which scale a standard sheet may show as much as a group of 

 six townships. The scale may vary above or below this stand- 

 ard. If a smaller scale is used, as, for instance, to cover larger 

 areas or for general maps, it is made either one-half inch to J. 

 mile or one-fourth inch to 1 mile. A larger scale than the stand- 

 ard will frequently be usetL lu many cases a single township 



