34 



BULLETIN 948, U. S. DEPARTMENT OF AGRICULTURE. 



R, 



03 | 



as 



as 



m ft 



ag 



Soooio 

 S _- 



o r " 1 



ft* 



18 



■8g 



OCOOrf^H 



,g co co ^ 00 CO 



8CNCN OOCNCN 



CO OiCOCOCN 



?i 



00 t^ 



r~cp 



OIO 



CNCNCNCO 



COCN IO00O1 



t?3 co ^ r— 



OOOOO) 



CNCNCNCNCN 



CNCNCO t»t> 



,3 ST" 



III 



c <^ ~ 



OOOcO 

 00)01 



OOCNrt< 

 0.-ICN 

 CO CO CO 



lOCO^CDCN 



CO ^H OS — I CO 



OOOIOO 



OJOJONC] CR 

 l/j O rH O) OJ CT> 

 (M CO CO CN CN CM 



CO-* IOIOH 

 CN rt rH 



CN 05 



COCO 



00 t^ 1^ OS 00 



os .-i eft r- r^ 



C4003 010 



CN CNCNCNCN 



>- C35 tO t~ •<* 



IOIONOCO 



co co cp r- th 



OOOOO 



CN CN CN "O -H 



COOHHC1 

 CN CO CO CO CO 



INCOMH-H 



wOfcCU 



id"- 'tis-" 



H ft-g O CO 



l£1ga£ 



«o?o3 



hi 



•«! 5. 



ffiO^^ 



