THE SHEL'l'KRWOOlJ S'lSI'EM 



J 39 



Fig. 30.— Reproduction of a Stand by the Shelterwood System, The 

 Sheltering Trees will be Removed in the Next Ten Years. Black 

 Forest, Germany. 



Fig. 31. — Primitive Application of the Shelterwood System, after the First 

 Cutting. ■ Lodp;ep')le Pine. Big Horn National Forest, Wycmiing:. 



