62 



BULLETIN 623, U. S, DEPARTMENT OF AGRICULTURE. 



£ 8 





a S 



cu Ol 

 So 



go 



O ^ 



- 





o 3 



00—. 



•jaqran^j 



•;q§I9AV 



•jgqinnjvj 



"m9i9M. 



•jaqmn^q; 



•WSraAV 



■JoqranjNj 



•jqSiaAY 



usqranjsi 



•^qSraAV 



•jaqxnnj^ 



•;q2i9AV 



•jaqran^; 



•;qSraA\. 



■jeqran^; 



•;q§i8A\ 



•jaqranjsf 



■;qSraAV 



•jaqranjsi 



'iqSPAV 



-.iaqmn^r 



•W^raAV 





ooooo 



ooooo 



C^OOO^H 



COOOOO 



II Ml 



^poooo 



QOHOrtT^ 



ooooor~ 

 I Jl J I 



OOOOCM 

 ■<c* CM CO * 00 



t^ ^H ,-h -* ' 



COOCO—IC/: 



I I I I I 



CO* ^ ocn 



co t ^h cm * 



CO CM CO CO »-< (^J 



OWOOCO ^H 



i V i i i 



ir: — co io co ph 



COO rH CO o 

 tO LfO CO CM .-H 



I I I I I 



MCJrHOCO 



CM CM ^ 



O w »C »0 O 



' "eft CO CM 



'ill 



* l 



CM CM 



tDOTl-ION 



oo cm * to co 



i-IOOIO 



LO Ol CI Ol ^ 



i i T i i 



CM i-l 



^t- CO .-HO 



o co co * o 

 I I I I I 



COCO -HOO 

 MCI 



n ci io ?: ci ^ 

 — i — < CO' o o cc 



t^OT HOW 



lo —.OX* CM 



*, 



OOOOi-i 



ooooo 



oooo--< 



ooooo 



i i i i T 



ooooo 



00--<0* 



O OOO CM 



i i V i i 



OOOOO 



0*05 



I I I I I 



OOOOO' 



~H o coo o 



lO COt~ CM CM 



N'OIO^CI 



i i 777 



CM rt MO* 

 t^- * CO CMIO 



ICOOM CM 



T i i 77 



NrHiHOH 



r^ co co coo 



WOOIOlO 



Viiil! 



CM .-H* CM CM 



C0 00NOH 



C1COHO* 



I I I I I 



CMCM*00 



00 ■ O CO CM CM 



CMO -T CMO 



CO O O * CM -^ 

 CM CO CO CM CM X 



CO t^ ^H CO lO CO 



I I I I 1 I 



Cc iC CC f^iON 

 i-lrt CO CO 



.£"0 



5C 





i Cl Cl Oj Cl 



TT ~- ~- T- J- ~ Jl 



COiMJiN^ 



O 00 ^ CC 00 <>) 



I I 1 1 I I 



OHIOOOH 



£ o i— t <n co ^r io <u 



(J; oi oi o d Oi o ^ 



73"" 

 o 



