192 INDIAN CORN OULTURE. 
0) = FG at =) 5 a. Oe 
SILOS AND SILAGE. 
At the present day a silo is generally repre- 
sented by a pit or room, in some cases with 
partitions, which is filled to the top with green 
fodder. The silo is built of stone, brick or 
wood, and is necessarily of strong construction 
in order to withstand the side pressure of the 
contents, which in deep silos is very great. 
The practical use of the silo in the United 
States really dates from 1576. Since then 
thousands of them have been built in this 
country and Canada. 
Constructing a silo.—In building a silo there 
are important points which it will be well to 
take into consideration. It should be made 
deep. The greater the pressure from above 
the more the air is expelled from among the 
silage and the better it will keep. A depth of 
24 feet is shallow enough, and if deeper it will 
be better still. 
The wall of the silo on the inside should be 
smooth. If of brick or stone it should be cov- 
ered with a coat of smooth cement. If wood 
is used the inside lining should have a smooth 
