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BUTTER-MAKING. 



require 700 pounds. If it takes 700 pounds of ice daily for 

 cooling the cream for eight months of the year, which is about 

 the time the cream would have to be cooled by artificial means, 



it would take 168,000 pounds of ice per year. As the specific 

 heat of cream is only about 0.7, the final amount needed for 

 cooling the cream would be only 117,600 pounds, or about 

 59 tons. 



