TABLES 



259 



TABLE LXI. ASPEN. 1 DIAMETER AND HEIGHT GROWTH. 



Based on measurements of 409 trees. 



1 Taken from U. S. Forest Service Bull. 93. 



TABLE LXII. PAPER BIRCH. 1 HEIGHT, DIAMETER 

 AND VOLUME GROWTH. 



i Taken from U. S. Forest Service Circular 163. 2 Based on measurements of 50 trees. 



8 Based on measurements of 30 trees. 



