in 
—==— > 
= ~~ 
== 
S355 
= 
“de , t, 
Sas ae fa 
A\\ 
aN, 5 
2 
— 
— 
——s 
SSeS 
ee me 
SS =r 
_—_ 2 ae 
<a 
March, 1957 
NATURAL 
| 7 1 1967 HISTORY SURVEY 
