160 THE PRINCIPLES OF HANDLING WOODLAN] 



Fig. 33. Just before the Removal of the Last Trees under the Shelter- 

 wood System. Young Growth has been Secured over the Whole 

 Area. Austria. 



Fig. 34. -After the First Work in an Open Irregular Stand. The Cut- 

 tings Followed the Principles of the Shelterwood System. Western 

 Yellow Pine. Black Hills National Forest, South Dakota. 



