EXPERIMENT STATION BULLETINS. 



183 



which the milk flows in thin sheets. By this means it is possible to reduce the 

 temperature of the milk at least to within five degrees of the temperature of 

 the water used for cooling. The cooler shown in Figure IX allows cold water 

 to enter at the bottom and the warm water to overflow at the top, while the 

 milk flows in a thin sheet over the outside of the cooler. If ice is at hand, 

 it is desirable to use it in both cooling apparatus. 

 Always keep aiirators and coolers as clean as any other dairy utensils. 



FIG. VIII. 



FIG. TX. 



