NATURAL ICE SYSTEil 



371 



Counting on 20 per cent loss incidental to transportation 

 and melting in the ice-house, 89 tons of ice arc needed for cooling 

 the cream and butter the number of degrees mentionerl abo\-e. 



One cubic foot of ice at 32° F. weighs 57.5 pounds. If i 

 cubic foot of ice weighs 57.5 pounds, 89 tons would (jccup}- a 

 space equal to 3093 cubic feet, and would require an icediouse of 

 dimensions approximately as follows: 16 feet high, 14 feet wide, 



