Bui. 24, Bureau of Forestry, U. S. Dept. of Agr. 



BEFORE CUTTING 



PLATE VI. 



PO 20 30 40 50 60 70 



AFTER CUTTING 



30 40 50 



AFTER 40 YEARS 



A s "e 60 



AFTER 60 YEARS 



60 YT. 



DIAGRAM TO REPRESENT THE PROGRESS OF CUTTING IN REGULAR SEED FOREST. 

 Each tree represents one even-aged division. Only one division in ten is represented. 



