Bui. 24, Div. of Forestry, U. S. Dept of Agr. 



Plate XXXII. 



-< 

 o 



c 



O 



X 



o 



c 

 z 

 o 



O 



r- 

 O 



H 



X 



m 



CO 



o 



c 



H 



I 



H 

 m 



X 

 2 



m 

 O 

 O 



z 



