34 



BULLETIN 681_, U, S. DEPARTMENT OF AGEICULTURE. 



^ 



^ 

 ^ 



crj 



o ^o 



R'w ft 



COfH CO 



a §^ 





M . ft 



a "-■ • 



ooo '-' 

 •43'OU:, 



^ § ft - - 



o S P 



'c^ 



g ft '3 aT 

 _ o ^ 3 w 



•S^ 



^.a o o o^ 



tS o 



w^iK a 



S O 3 03 



a a ft« 



(MM MIN 







vvaS o 



•aoS2 





OT) o 



ft 



C3 C3 !£ C3 !3 

 COC<l^ CO fl^ 



; ^ft-Sft 

 ■ £ X o X 



T3 O 



11 



§3 



o3 POO) 

 ^ X ^ X >^ 



dd®dOj^g""adoddd ddddfi 



.IM-1-H..Sg.rtrt rH 



• . . o .. '0.30.... 



d d d d g d d 



ft3 o.. 



■ -^ lO «0 t^ 00 Oi O ^^ (M CO 



-"^■^ 10 UO 0000 



0606 oooooioioioi 



] O C^ CO »0 t^ 00 O CO »0 CD GO 



^ ^O CO O r^ ^ C: 



C3 O 



^^' 



ccd 



ft^' 

 is 



•-^ 





