Bui. 741, U. S. Dept. of Agriculture. 



Plate 



Q Ld 



h 





w~0 c 



U I 



CO 





"d.S a) 



N H 







M^ 



< 









tr >- 







P § g 



CD m 



m 





>• Q 



T 





" p -a 



_l LU 



h 







Lu ^ 



C5 



z 







-L ,. 



rr 





^» 









d^ a 



Z IE 

 O UJ 



Q 





g A 



CO* 



en 





■« ..y 



t;i 



_) 





"Si"! 



o o 



7 





B% u 



CO > 



5 

 or 

 hi 





■fgs 



_l o 



o m 



h 



UJ 



I 



-w PI 



o.2 S 



ir h 



± 



^r 



^ & w 



< H 



h 



n 





uj O 







•ss-a 



>cn 



U. 

 O 



CD 



°a~ 



o , 







Sao 



T- O 



C3 



z 



CO 



O 



o 



z 

 o 



CO 



< 



second ; 

 •e subsec 

 the end 

 duced. 



. _] 



IT 



HI 





CD CL CO CO 



,§ P rf P< 



U. 







Eh 



