FOEEST RESERVE MANUAL. 



47 



difficulty in numbering them by any definite system. For 

 instance, application for timber in the southern end of a dis- 

 trict, and the consequent survey of the block from which it is 



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,-B' 





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n9° 





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Fig. 2. — Big Horn Reserve. Piney Creek Drainage Basin, valley of South Piney, Dis- 

 trict No. 3, Block No. 1. 



to be taken, may be followed by a similar requirement in the 

 north end, while the intermediate portion remains unsurveyed. 

 In such a case it will be necessary to number the blocks as 



