NATURAL ICE SYSTEM 



371 



Counting on 20 per cent loss incidental to transportation 

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

 the cream and butter the number of degrees mentioned atTove. 



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 occupy a 

 space equal to 3093 cubic feet, and would require an ice-house of 

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



