NATIONAL FOREST RESOURCES 187 



tions of the West additional trees must be left stand- 

 ing to protect the forest from excessive drying and 

 to prevent the ground from being occupied by use- 

 less tree weeds and brush. Often, especially along 

 highways, trees are left for their scenic effect. 

 From an economic standpoint it is important some- 

 times to leave trees in order to make a second cut 

 worth while. 



Where only dead timber is purchased, and no 

 hving trees are cut, or where patches of forest are to 

 be cut clean. Forest officers, instead of marking 

 every tree to be removed, blaze and mark a bound- 

 ary of the cutting area or patch and instruct the 

 purchaser accordingly. Where individual trees are 

 marked they are blazed and stamped "U. S." next 

 to the ground on the lowest side of the stump. 

 Additional blazes may be made several feet above 

 the ground whenever desired by the purchaser for 

 the convenience of his "fallers" or where deep snow 

 may conceal the lower mark from the "fallers." 

 Where both kinds of blazes are used, one man, in 

 fairly dense pine timber, can mark from 500 to 

 1,000 trees in a day. Under no condition may un- 

 marked or undesignated trees be cut by the pur- 

 chaser. 



