Bul. 379, U.S. Dept. of Agriculture. PLATE X. 
“g 
Le 
"EE = 
Poy 
=| 
TU | 
NY | | ia 
a inneva 
oe 
77H 
I 
a 
I~ 
> 
I | 
AW, 
WANG: 
AUTOMATIC FIRE EXTINGUISHER. 
