22 BULLETIN 863, U. S. DEPARTMENT OF AGRICULTURE 



Fig. 13. — The growth and value of pine are increased by repeated thinning. The trees removed can gener- 

 ally be used or sold profitably for firewood, treated fence posts, or small timber. A, Before thinning. 

 Fifteen overcrowded trees (shaded trees to be cut). B, The same stand five years after thinning! Six 

 larger and more valuable trees (shaded tree to be cut) 



