118 



BULLETIN 948, U. S. DEPARTMENT OF AGRICULTURE. 



O 



8 











70 





SO 70 



o 









— 





■* 





7T7 





CM 







-r >-"7 



CO 00 CO oo 



-V 



CM 



















■a 

 8 • 



M 



■ O X 



OS • 



A — io 





UOCM 00 • 



00 • 



~ CC 'TO 



oo r^ -tsH — oo 



CO ' 















"c3 



OS 



OS OS 



00 • 



37 O OS 







OS ; 



X OS OS 



OS 00 00 OS 00 



OS • 















CO 



§ • 



































s 



o • 

































>o 





ft, : 

































ei : 



■tf 



CO CO 



CO • 



a> oc o 





■*«■* 



OS '• 



U0CM OS 



IO — < <N^00 



o '• 













4 







CO 



T 01 



-tf • 



7 17-177 





CM CM CO 





CM CO CM 



O CO t* -tfi IT7J 



CO ' 

















tt 



CO CO 



CO • 



TO TO CO 











COCO COCO CO 



CO ■ 













OS 



O 



o • 





































ft, : 



































(N 



— f- 



,_, ; 



CO CM >C 





co-tf CO 



rt : 



CDiO-* 



CO-*— CO»-H 



CM | 















as 



cars 



















CM 





















































CO & 





































«j : 





L3 5 S 







lO OS »c 



CO — OS CM O 









■* OS 





SO 



,_, 



■tf CO 





X 









"3 



CO 











O CO — 



OCOUOOCM 









77 -7 





Ol 



01 



oo 





O) 







s : 











O OS OS 



OS OS OS OS O 









OS TT. 





o 



c 



or- 





OS 







O ' 





































CO 





ft. : 







































g 





•tf <-, r- 







— OS CO 



r~ co — b- r-- 









'-7 X 





SO 



_ 



CM-H 





TO 





5 







'0 TO TO 







'~ - 77 



CO COCO Tf CM 









7-7 77 







~v 



CO — 





TO 









CO CO CO 







CO CO CO 



CO COCO CO CO 









TO TT 







CO 



coco 





CO 





o 



s 





































OS 



o 









































ft. 





































, 







CM -tf -*sp 







CM — »0 



rtNTfrt^ 









— .77 





^ 



CO 



HrH 





,_, 







a c3 













CM 











(M 



















ca — < 









































CO ft 











































S 



s 



o 





co — o 







•tf t^CM 





CM CO-* 





IO 



X -f 



OS CO 



to r^ 



CO 



t- 



o 







"3 



CO 





TO SO TO 







X 777 X 





OhN 





Ol 



r- — p 



IO o 



X X 



o 



r- 



TO 









OS X OS 







X OS X 





OS OS 00 





OS 



X OS 



OS OS 



OS X 



OS 



00 



OS 



d 



o 



r~ 





ft. 





































■3 





CN| 00 00 







CO OS OS 





— «tf 00 





■o 



tt; -* 



•*o 



OS CM 



00 



,_, 



s 



03 



3 







'0 -f TT 







Tl 77 77 





-tf COCM 





■rf 



-t T 



r-, CO 



TO -T 





TO 



-sf 







a 





CO COCO 







CO CO CO 









CO 



CO TT 



coco 



70 TO 



CO 



TO 



CO 







O 



s 

































ft 



o 



OS' 



ft. 







































































O 





S CO 







CM CM — 







lOOOCO 





Tt<-tf to 





CM 



U5CM 



-* 



— — 



to ei 





1-1 



1-1 







CO ft 









































T3 



s 

 o 





cm co— i 



CM CM CM lO CM 





00 i- 1 CM — 





CO 



tt; — 



to t^ 



•tf 



00 



IO 



t 







13 



CO 





n-. — — 





CO U0CM C\ 





o 



Tj; -_r 



CC' o 



1^ 



00 



CO 



■Si 









x or. ~ 



oo as os x os 





00 OS OS a 





7T. 



X X 



OS OS 



00 



00 



00 



OS 





00 





ft, 

































3 





CO CO CM 



00 HO O CM CM 





CO •* O CT 





o 



IN tH 



00 OS 



CO 



00 



■tf 



a 











~ 70 — 



OS CO CM CO — 





CI OTO C\ 





Ol 



TT 7 7 



CO OS 









~ 











CO CO CO 



CM CO CO CO CO 





COCO CO c 





CO 



TO TO 



CO CM 



CO 



CO 



TO 



TO' 







o 



s 































OS 



o 



































ft. 





























. 







CMOS 00 



HHNHOl 





OS »o o o 





■* 



TO ^ 



ION 



CO 



CO 



U3 



M 







a co 







rt 



CM — 





rt 







»o 

















c«— : 



































CO ft 





































So 



OOO) 





CM CO 00 CO 





some- 





■* 



C". 7T 



XO to 



CO 



CO 





t~ 











7 ~ ' 





7CXNCC 





xsc* 





TO 



T0 777 



OS CO 



t~ 



CO 













CO 



OS X o; 





O OS OS OS 





OS OS OS c 





TO 



OS TO 



oos 



OS 



OS> 





o 









s - 



© ^ 







r-T 









■^ 



— 



- — r 









rn" 







OS 





ft, 

































SCO 



OSO — 





00 CO IO CO 





IO CO ** •- 





,_, 



— CO 



OCO 



ff^ 



,_, 





IO 







3 





CO CO — < 





— CO) — 





CM CM CM C 





= 



— C 



— CO 



rS 







3 









CO CO CO 





CO CO COCO 





CO CO CO c 





CO 



TO TO 



coco 



eo 



CO 





TO 









O 



s 

































os 



o 





































ft. 































, 



<N 



— OS OS 





— r^ — io 





-H -^<TJ,i- 





■* 



OSC 



CO "0 



oo 



o 





'o 









as 





^ 





"tf OS 











i-O 



































CM 



















OS'S 





































CO ft 

































© 





is cm o co — < as 



COf~CM CO- 



CO 00 CO 00 -tl 



CM UO CO CM t) 

 00 to OS CM H 



r^ o to co cc 



OC' CO — t^- CC 



9 



bo 



"3 



CO 



»-m:i-i: 



CD r*- io *tf cm 



OCM -KCM O 



O CO Tf, CO c/ 

 O OS 00 OS o* 



WONhcc 



fi 1 



l> o 



P. O' c. o; c. ~ 

 s - 



00 OS OS OS c 



OS OS OS OS o 



OS cs 00 OS O" 



0>N»00 



















S3 





,2 co th i-- f~ cm 



2 CO TO CO 7- ? 



ff TO TO TO 70 70 



hncdosu: 



NOconc 



OS CM 1C O CC 



N CTj « IO C 



CM — 00 IO O 



d 



CM CM CM CO CM 



CO CO CM CO O- 



— CM CM CO CM 



CM — CO — TO 



CO CO CO CO CO 



CO CO coco c 



CO CO CO CO CO 



CO COCO CO C" - 



CO CO CO CO CO 



o 



3 













■A 



© 



0, 













_ 





CM CM r- >0 OS 



CM CM NMO 



— os — r--*i 



rtOOCON 



NCC'HOC 



CM — COOCO 



lis 



1 



CMOO 



CM CM Tl 



CM CO-* 



~ §- 



CM — 



gsi 

















i 















>> 





































































































































d 

















































^ ri 



P o 















§ 









































hie > 











J< 



a 



TT. 



gl 



o 





\ 









E 



ox 



II 



it 



1 



c 



TT 



E 







c 





c 



1 1 



c 





a c 



_ t 



-7^ ~ 



> a 





11. 



tn 2 * 



"fl c 



fee's 



a 



g 



CC 



c 



d 



CO 







£ c 



CCt CO G 





> a cTj 





l_ c3 03 CO CO 









c 











ft 



ft 



ft 





£ 





h- 



IJ 



- 



? 





|E 



fs 



|S 



? 



1«= 



Sz 



!z 



y 



c 



c 



(1 



ft 



ft 



ft 



, 



