Bul. 1496, U. S. Dept. of Agriculture PLATE 4 
THINNING OUT A STAGNAT:NG JACK PINE STAND 
The same stand is shown in (A) and (B) before and after thinning. This jack pine on the Cloquet 
Forest in Minnesota is 27 years old and had grown to 2,200 trees to the acre. Only 700 trees to the 
acre are left after thinning, but they comprise half of the former volume, and their growth will 
be greatly accelerated by reason of this operation 
