100 



PKINCIPLES OF AMERICAN FORESTRY. 



TAULE SHOWIN'G THE APPROXIMATE HEIOHTS OV ONE- 

 YEAR-OLD SEEDLINGS GROWN ON GOOD AVERAGE 

 SOIL IN MINNESOTA— (Conhnwerf). 



size of seed and drj'ness. In the case of the Birch there 

 are perhaps four hundred thousand; in Scotch. Shortleaf, 

 Red Pine, and Norway Spruce there are ]icrhaps seventy 

 thousand; in White Pine about thirty thousand; in Box- 



