14 



BULLETIN 958, U. S. DEPARTMENT OF AGRICULTURE. 



S s^ 



«^ 



^if- 



lO 



V 



©» 



s 





s 



p» 



l-^ 



■^ 



a 



s^ 













i«C* 



s 













cs 





5 s^ 



^1 











CO 









^ 

























CO 











fe=^ 



CO 



I> 





OT 













O 



00 













r>- 



CO 



t^ 



l> 







cx5 







^ 



rt' 



CO 



CO 



CO 



■<li 



in 



CO 



CO 



CO 



in 



r^ 



-* 



in 



IM 



(M 



rjl 



CO 



CO 



< 













































-ii 



o 



S 



o 



S 



o 



J= 



o 



O 



S8 



S 



s 



2 



s 



^ 







s 



R 



S 







s 



S 



g 



O 





o 





CO 



•— t 



00 





CO 





in 





cq 



T—t 













OS 



in 



in 







1 



rH 



T_4 



co- 



tH 





CO 





O 



CO 





in 



■clT 



CO* 



CO 







CO 



CO 



in 







00 





















































g 















g§ 

















s 











2 





ts^ 





ld 



00 



o 



t^ 



t^ 



t~ 



CO 



o 











t- 









CO 



in 





"o 







^ 



^ 



ni 





-l! 



tp 



.n 



in 



i> 



t^ 



CO 



CO 



in 



CC' 



in 



m 



cq 



rq 



CO 



^ 



fe 













































o 

 O 



fti 













































s8 



^ 



R 



1 



s 



o 



o 



^ 



s 



R 



i 



g 



^ 



s 



s 



S 



s 







5 







1 



s 



g 25 









CO 



cq 



lO 



CO 



CO 





t* 



CO 





CO 



r» 









00 



OS 





? 



,^ 



^^ 



CO 



Ttl 



CO 



00 



o 



05 



IM 



IM 



in 



in 



CO 



CO 



im" 



CO 



IN 



^'' 



in 



in 



t^ 





CJ 















'"' 







'"' 



'"' 



'^ 



*^ 



"^ 



'"' 





"^ 



'"' 











.<M 







C<l 





CT> 



o 













<N 



oc 



CO 



cc 



oc 



s 



s 



t- 



















t— 1 







CO 





1-1 

















CO 











T-H 



.^ 



c^ 



CO 



CO 



"•f 



^ 



CO 



r^ 



m 



r~ 



in 



t^ 



in 



in 



in 



CO 



cq 



ci 



CO 



■* 



l5 













































o 

 O 















































^O 



i 



R 



s 



g 



^ 



? 



^ 



R 



g 



o 



i 



s 



R 







R 



^ 



S 



^ 



? 







g 



go> 









00 



in 



o 



Tt* 





Tj* 









00 



*-t 



00 



?5 



00 





in 



OS 





? 



r^ 



CJ 



CO 



TtH 



CO 



t~ 



o 



» 



CO 



in 



^'' 



in 



IM' 



CO 



^ 



i-T 



,-4 



CO 



in 



■*" 



CO 





o 















'"' 





'"' 



"^ 



^ 



'"' 



■^ 



'"' 



'^ 



'"' 



'^ 













. c5 



S 



oc 



05 



to 



c^ 



s 



S 



o 



!5 



^ 



^ 



s 



s 



00 



s 



S 



s 



CO 





s 



S5 











^ 



^ 



M 



CO 





t^ 



t^ 



rp 





t- 



CO 



CO 



in 



in 



CO 



CO 



<N 



^ 



^ 





S; 



^ 













































g. 















































ts§ 



<^ 



s 



IC 



^ 



s 



R 



o 



^ 



1 



s 



i 



s 



R 



R 



R 



<^ 



s 



g 



^ 



2 



s 



CO 



g OS 



c^ 





f— t 



o 





m 



o 



CO 





IM 





CO 



00 



■^ 



CO 





00 



^ 



t^ 





f> 





fl 



CO 



•^ 



CO 



r- 



CO 



■^ 



,_h' 



in 



CO 



^ ^ 



w 



OS 







^ ,-( 



^ ^ 



~ ■* 



■ (N 



CO 



eo 





o 















'"' 



'"' 



•^ 



'"' 



'"' 



"^ 



'"' 





'"' 



■^ 



'"' 













,g 



S 



s 



s 



g 



?3 



oc 



in 



in 



OS 



s§ 



?? 



g 





s 



s 



s 



s 



g 



g 



a 



s 



s 







^ 







■o 



t^ 



r/ 



t- 



o 



00 







CO 



in 



-1! 



Hi 



■* 



f-H 



^ 



^ 





s 



^ 













































& 















































i^^ 



S 



iC 



s 



g 



1 



s 



s 



^ 



s 



^ 





s 



s 





8 



5 







? 







i 



i 



M 



gco 



ta 



05 



e<i 



05 



CO 





QO 





in 





CO 





CO 







t> 



OS 





f-H- 



^ 



^ 



^ 



t^ 



00 



tH 



CO 



IM 



t- 



CO 



■ o 



r>- 



■ 



■ 00 



■ t- 



M* 



t» 



cq 



"* r^ 



CO 



^ T-T 





o 













'^ 





'^ 



'"' 



'"' 



'"' 





'~' 





















^•So 



t~ 



S 



S 



s 



§ 



00 

 CO 



5 



£ 



s 



s? 



5: 



g 



s 



s 



t- 



;c 



CO 



8 



s 



t^ 











^ 







<yl 



t* 



^ 



^ 



^ 



00 



-* 



in 



^• 



CO 



« 



rA 



N 



^ 









CO 



















'" 



"^ 



























& 















































«»-5 



r^ 





o 



s 



S 



i 



!5 



O 





p, 





s 



^ 





2 



R 





^ 



<^ 









CQ 





OS 



•>!" 



t^ 



>o 



CO 



CO 





OS 





CO 













CO 





^ 



OS 









f-;- 





C^ 



- O 



o> 



' IM 



o 



CO 



CO 



in 



^ ,-t 



CO 



00 



CO 



in 



CO 



t-H 



CO 



■^ ,— 1 





t-^" 





Gj 











'"' 







*"* 





■^ 





























s 



^ 



So 



s 



s 



« 



g 



s 



?s 



s 



e« 



in 



1-* 



^ 







?g 



S 















c4 



>n 



00 



ci 



cq 



^* 



o 



OJ 



CD 



CO 



(M 



-1 



'^ 



















1 



^ 















































(^ 



S^ 



S 



s 



^ 



s 



s 



s 



S 



^ 







? 



s 



^ 





















CO 







CO 



»o 





CC< 





1- 







CO 





^ 

















? r- r 





' >o 



CB 







lO 







■ CO 



CO 



C<1 





■■ ,^ 





















03 

















































s 



« 



lO 



s 



s 



.s 



o- 



s 



Se 



i 



























o- 



oc 



en 



ai 



^ 



J- 



C<1 



CO 





























o 















































^ 



ft^ 





















































to 



o 





































ai 









































■< 





















c> 



























1" 











































































































































c< 



O 



^ 



1! 

































. 





o°! 

















































»o 





































CO 





c^ 



c^ 









































ti 



. ft, 













































gS 



? 



s 



^ 



5 



o 



SR 

































■< 



1"^ 



«. 



a 



-* 



^ - 









































<- 



























































































^00 



g 











































^ 



ft. 













































«•§ 



C 



c 









































< 



r^ 





- 











































in '• 



O 



lO 



o 



o 



o 



o 



o 



o 



o 



o 











































• 













-^ 





-*-i 



4^ 



+3 







+s 



■^ 



+* 



-4^ 



+^ 



+3 



-l-s 





4^ 



4i 



+a • 



m 





o 



o 



p 



,_, 





^_^ 





,_^ 



CO 



,_, 





T_4 



CO 



,_( 





,-H 









,_) 

















































'i 



^ : 



^, 





JO 









'^ 



O) 



CN 



IM 



cq 



CO 





CO 



CO 





■* 



^ 



Tfi 



m 





1 



^- : 



of 



CO 



th" 



>0'm 



CO OT 





00 a- 



•F 



0> M 



•Fl 





'^. F 



'^fi 



CO ^ 



''-F 



^. F 



^■f 





'^. F 



"f 



^F 



^.F 



hn 



° ,A 









" n 



" <T 



1^ " 



"-^ A 



^ ^ 



O- !r 



O n 



n 



„ 



„ 



n 



rf 



rf 



rf 



rr 



rf 



,T 





^a 



gp 



^F 



^a 



'^ bl 



J^ 6/ 



'^ bl 



'^S 



d'^ bi 



2;s 



j^:^ 



y^ a 



o!^S 



:^^ 



=^& 



o^fe 



i^ bj 



c^ s] 



0'^ & 



c^ a 



O^fe 



0^ w 



(S 





M * 



^^2 



Sin 

 Mm 



11 



03^ 



«? 



Srq 





tnio 



^* 



^^ 



k'^ 





si 







i^ 



ii 



1^ 





















































o 



>-> 



u 



o 



O 



u 



U 



u 



o 



u 



U 



U 



tj 



u 



u 







U 







u 



u 



u 



u 



