16 
BULLETIN 988, U. S. DEPT. OF AGRICULTURE. 
?:— 
1 
!S\ 
7 
1 
t 
* 
^) 
( 
( 
<* 
, 
) 
\ 
V 
\ 
1 
nCn 
) 
\ 
-* 
c> 
< 
* 
V. 
} \ 
$ 
to 
t 
c 
|i 
CM 
^N 
t 
N 
jcr 
\ 
* 
'■// 
i 
^ 
2 
) 
( 
I 
■~3 
A 
N 
K 
\ 
"* 
S 
< 
s 
< 
/ 
( 
* 
<c 
%- 
l_ 
S 
N 
< 
<0 
\ 
! 
\ 
\\ 
) 
1 
1 
N t^ 
( 
\ 
s 
/ s 
\ 
i 
1 
• 
i) 
«is 
\ 
"? 
f\i 
1 
T * 
2 
l 
1 
sj 
I 
i 
* 
>< 
- 
* 
1 
\ 
V 
) 
\ 
\ 
' 
3 
s 
1 
N : 
1 
t 
<N 
/ 
2J 
' 
r 
) 
1 
i 
o 
^o ^&/2JP&PZ#VJU 
