Miscellaneous Pub. 61, U. S. Dept. of Agriculture 



PLATE 9 



F-29404-170769-173245 



EXPERIMENTAL THINNING IN PURE WHITE PINE, OLD ORCHARD PLANTATION 



A, The 18-year-old stand just before thinning; B, the 24-year-old stand just before the second thin- 

 ning; C, the stand just after the second thinning. 



