64 



PKINCIPLES OF AMERICAK FORESTRY. 



are known (1) as the Selection Method, (2) as the Strip 

 Method, and (3) as the Group Method. 



The Selection Method refers to the cutting of the mature 

 trees and to the removal of inferior trees to make room 

 for the better kinds. In this system much care should 

 be exercised to prevent the growth of grass, which gen- 

 erally comes in when the cutting is done more rapidly 

 than the seeding trees can seed the bare land. On the 



Fig. 9. — Trees with branches cut off before falling, so as to prevent 

 injury to young growth around them. 



other hand, it is just as important to exercise care that 

 the young seedlings which have started have sufficient 

 light so that they can make a good growth and not be 

 shaded out by the older trees. The removal of a single 

 tree often lets in so very little light that seedlings cannot 

 get a good start. On this account the group method is 

 probably best adapted for general use. 



