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



BEFORE CUTTING 



Plate VI. 



•i- 



i 



._i...._i.. 



Jl. 



20 30 



60 70 eoYrs. 



AFTER CUTTI NG 



__. L 



Age , ,0 



I 



1 



20 30 40 



50 60 



.JL 



AFTER 40 YEARS 



4 



i f ■ f 



60 70 



AFTER 60 YEARS 



.1, 



1_„ 



'^' 





Age 60 70 



20 30 





50 60- 



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. 



