170 



INTERMEDIATE CUTTINGS THINNINGS 



PER CENT OF TOTAL CUBIC FOOT VOLUME REMOVED IN THINNINGS 



FIG. 67. 



The same stand as shown in Fig. 66, but after an A grade thinning removing 

 suppressed trees has been made. Note that the main crown canopy has not 

 been opened by this light thinning. Compare with Fig. 68. 



