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



before: cutting 



Plate VI. 



^6" 



_-. 4_._f. 



Age 



20 





_i i 



Age AQ 50 



60 



I. 



I \ 



30 . 40 50 



ATTER CUTTING 



..JL 



60 



L__.JL... 



70 BOYrs. 



.±. 



40 



60 





70 



eoYrs 



AFTER 40 YEARS 





20 



I 



40 Yr-S. 



AFTER 60 YEARS 



L I _1 





"^ !r 



60 



[ 



60 Yr». 



Age 60 70 



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. 



