126 BULLETIN 9i8, U. S. DEPARTMENT OF AGRICULTURE. 
< * 
z I 
§ 8 
> o 
5-= 
-iHCMO 
£2 
S ~:co 
o 
g 
151 
3 
<gp, 
£8 
S coco 
o 
,X-*X X-< 
or 1 n co 
, 31 N O X « 
HXOMO 
-g x x li m r~- 
rC; t- -t- rs r~ ( 
= = 
XXOIX 
i-1 CO CN CO 
CO CO CO CO 
s s a h b" > 
..J-ogSg < 
^ 
CO OS 1-1 
— 11 — 
CO CO CO 
Ll^f X— I 
11 X — I CM 
IS X CC: CCS 
— 3a --T co 
15 ii = r; 
co co co n 
C: 1<i?l 5 — 
CO COCO CO CO 
...a g H e3 
— o ? a> 3 
£^ c » s 
CO I 
a > 
