50 



THE BOOK OF BUTTER 



' Table XIII — Effect of Stirring Milk on Rapidity of 



Cooling 



" When a sufficient amount of ice and water are used, 

 stirring the water in the tank at frequent intervals has 

 httle, if any, effect on the rapidity with which the milk 

 cools (Table XIII) . In this experiment the milk was also 

 stirred every ten minutes. The large quantity of ice used 

 in this experiment is accounted for by the fact that the can 

 of milk from which these temperatures were taken was 

 cooled with three others in the same tank." 



37. Coolers. — A conical or tubular cooler may be used 

 to advantage if the herd is large and there is a large 

 quantity of milk to be cooled. If the milk is separated 

 at the creamery, it should be cared for as outlined above 

 or a cooler may be employed. If the cream is separated 

 on the farm and if there are several gallons from each 

 separation, it may pay to spout the cream over a cooler 



