WATER AND ICE -SUPPLY 34] 
gable ends as well as one or two ventilating shafts pro- 
jecting through the roof should be provided to insure a 
free circulation of air under the roof. This will not only 
remove the hot air which naturally gathers beneath the 
roof, but will aid in drying the sawdust. 
The ice must be packed solidly, using no sawdust 
except at the sides and bottom of the ice house and on 
top of the ice when the filling is completed. At least one 
foot of sawdust must be packed on top of the ice. 
Size of Ice House. The size of the ice house will 
depend, of course, upon the amount of ice to be used. 
For a herd of 25 cows, in the North, an ice house 10 
feet square by 14 feet high will usually answer. These 
dimensions provide storage for 22 tons of ice, allowing 
one-foot space all around the ice for sawdust. In the 
South about 50% more ice is required than in the North. 
In calculating the amount of storage space needed for 
ice, it is necessary to know that one cubic foot of ice at 32° 
I. weighs 57.5 pounds. 
As a matter of convenience in filling and emptying the 
ice house, doors should be provided in sections from the 
sill to the gable at one end of the building. 
General Uses of Ice. Aside from the use of ice in 
cooling milk and cream, it can be employed to good ad- 
vantage in several other ways. Its value in the house- 
hold, in preserving meats, vegetables, and fruits cannot 
be overestimated. And what is so refreshing as cold 
drinks and frozen desserts during the summer months! 
Ice is also frequently necessary in case of sickness. 
Cost of Making Ice. Where ice can be obtained with- 
in a reasonable distance, the cost of cutting, hauling, and 
packing should not exceed $1.50 per ton. 
Source of Ice. Always select the cleanest ice available. 
