190 BULLETIN 1059, U. S. DEPARTMENT OE AGRICULTURE 
:::::::;:- 
c 
IN 
cc 
' iO 
O 
3 
CO 
cccccooo 
cs c^ e5 cm ei c-i re re re re 
c 
5 
t^c; 
o — c^-^icoxcrs 
N n N M M M M M 
o — ce-^i-et~3Cc;^HiM 
cererecerererere^-*-. 
° 
eQ cm 
oo 
DOO>OCi»eO-*«OI> 
- 
DC 
il 
tOt- 00 O »-l C* ■>* w 
t r t c c c io >a »-e; «a 
cc=c=cc=cc 
1 
o 
11 
-^-■eoxoqc^ce 
gggggggggg 
° 
i 
:::;:::::: 
. 

■ 
: 
i 
o 
CO 
:::::::::: i 
:::::::::: ::::::::::: 
o 
3 
■ 
o 
■ 
S 
27.0 
s' :::::!:::: :::::::::: 
= :::::::::: :::::::::: 
24.0 

:::::::::: : : : : : : : : : : 
— ' e-i re ->r in so t- s — q — N re -<r ic so t- X as q 
X X X X X X X X X - •' -'■ c-' — - - — - - - — q 
