Bul, 154, U. S. Dept. of Agriculture. PLATE Il. 
-_e 
LOD GEPOLE FU a 
——_ ~ ~ the 
P Léeriode age Wat = ems 
ELLECT OF 7HINI 
EFFECT OF THINNING LODGEPOLE. 
After its release this tree increased in diameter from 3.5 to 6.3 inches in 12 years. In the last 
12 years the tree has been growingat the rate of an inch in diameter in 4 years, while in 
the previous 12 years it had been growing at the rate of an inch in 25 years. The tree has 
been growing 772 per cent faster in v olume in the last 12 years than in the preceding 12 
years. Note the thin bark. 
