136 Nebraska Agricultural Exp. Station, Research Bui. 6. 
CO ^ 
o o 
S CO 
1 
o 
+3 . £ 
c< E 
MS 
5*o « 
.Us 
o S g 
oo oc 
co cm cm cm 
— cm co oo 
ONO" 
2 hh^n 
O ^ -*eoin 
C m CO id id 
5 ooooo-h 
2 coeocMeo 
D 
oo^t- i 05 y 
oo eg as in 1 1 
id id o 
10 oo co 
t- co io co 
« oo — —i t- 
t- cm eo m m 
■u> a 
O c« co 
CS (MCMt-iO 
H eommco 
c C5 — co ^ 
a dddoi 
> CM CO CO CO 
2 05 co t- 
2: — eocoeo 
co m io m 
m Tt m co 
o 
— rH iH 05 
O CO OO in 
CM CM — ' 
oo 
CM (MOW 
CO 
CO CM — CM 
N 
CO CM Tf CO 
t> CO CO 00 
lO. 
oicd^-H 
DO 
© CM in CO 
CM 
in in CO -<J< 
co 
o oo o co 
in 
co t> lo — 
id 
m CO 05 CM 
p 
CO CM CM CO 
lO ^ 05 CM 
CO CM 05 — 
00 (M © 
-~ 
CM 00 O 
3C 
co co in o 
!C 
m 
CM 
oo oo o> © 
CO 
tj< as m 
CO 
cm cmo^w 
N 
cm co m cm 
CO 
co co m cm 
t- 
oi m © o 
oo 
co o cd oo 
oo 
co m co t- 
IC 
> OOCMCOtT 
E oo co t- in 
i co m m m 
e eo o — t- m 
jfc w co t}< cs m 
O — cm cm cm 
B cm 
CO 05 © t- 
cm m cm co 
— CM CM CM 
II 
oo oo O co x 
eo — cm c~ 
CM CM CM CO — 
CO 05 t- CO 
CO 00 CM Cxi 
— CM CM CO 
^ cm 05 coco 
co co eo t- 
-h CvKMCvKM 
Q W "J ^ 
(i co oo od i-< 
o cd in co 
a, ■«< in m 
c — 
O 
^1 _ cu oo 
« t}" a m m 
H coco^if 
_ oo'ooodoi 
O CMOJCMCM 
« 
K 
^CD05TJ< 
Oi CO CO t- 
-<t m ^ t)< 
CM 3 
eo cy 
cm a 
co o co en 
t> 00 CM CO 
(M W CM CM 
Tf t}< CM CO 
00 — HOi 
— CM CM — 
m co c- oo I 
cm eg evj eo i 
I 3 
05C0O-H 
CM CO t> O 
05 GO t> CD 
cd a 
CM 2 
C 
2 
< — c-eoo 
2 oo C5 in 
_ id o od od 
5s co in in m 
^ CM CM CM CM 
eo eo ^ co 
^ (MCOC50 
«o ido5*Tro6 
■<* m 05 -h 
0 
P Tj<mo5eo 
c- m x o 
o 
§ 05CDC-0 
w -H 00 00 CO 
o 
t> cm o co m 
„ xoaci 
« rj< in Tf 
o 
E- 
m j 
<M ^ 
m 3 
m o 
cm a 
— H < 
o « 
<M P 
. H 
cv > 
m eo 05 1> 
eo t> m t)< 
CM CM CM CM 
05 05 00 00 
o oo 05 o 
CM -h — CM 
