41^ 



University of California Publications in Agricultural Sciences [Vol. 2 



pq 



CO 

 ►3 



O 



i 



w 

 o 



Ph 

 Q 

 > 



w 



n 

 O 



63 



W 

 Eh 



>H 



n 



o 



a 



&H 



73 

 W 



5 



03 



<J 



M 

 O 



>< 



W 



a; 



CO 



O 



o 

 c» 



(d 



Oh 







<3 



w 



» 

 w 

 en 



w 



PM 



m 



Eh oj 

 W I 



1-H tH 



u 



e 



3 



H 



c 

 o 



3 



o" 



g^ 



e'S 



.2 ^ 



la® 



3 08 



c * 



C cJ 

 C3.„ 



U <u 



g"S 



. 3 

 .■J C 



i2 



3 '■" 

 •^3 

 3 ° 



£■& 



II s 



0/ en 

 g^ 



^% 



