Bui. 32, Bureau of Forestry, U. S. Dept. of Agriculture. 



Plate V. 



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o 



CD 



m 



m 



H 



o 



c 

 2 



r - 

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O 

 > 



I 

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33 

 O 



O 

 O 



a 



oo 

 o 



o 



2 



P 

 IO 



'I 



O 



o 



$ 



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 > 



> 



z 

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