104 



BULLETIN 948, U. S. DEPARTMENT OF AGRICULTURE. 



§ 



u « 



n 



> o 



CO Ph 



Si 



OS'S 



0)0)0003 O) 



C) rt —I -H -H 



CO CO CO CO CO 



: -^ O Oi CO 



(NOOKO 



IH-H O 



CO COCO 



CM CV1 



COCO 



WO C0> CiT CM O) 

 lONO: -<* CO 



o o o o o 



** CC SO CN i— I 



COOHH 

 CO CX CO CO CO 



CRCOOCMi-H 



CO '^ COO 

 COO-H 



COOrtOO 

 OONh 

 co co co co 



cs»a 



oj 



S £ 



raS o * 



-; 



»2c 



09 X - Z 





-ScoO 



w 





W 



owOfcQ 



H 



o 9 s a a 



O-g-Q O CD 



ScoCfcQ 



