EQUIPMENT FOR COOLING 



47 



Picture No. I shows a cooling tank of wood 

 that is much too shallow. Night's milk in the 

 upper half of the can cannot be kept cool. 



Picture No. 2 shows a cooling tank of cement. 

 Even this is not high enough to bring water 

 around the neck of the can. 



Open Coolers 



The campaign for instantaneous cooling has 

 led to the use of open coolers. All of these are 



Warm Milk 



of tin, some of them conical in shape, and some 

 corrugated, or made of horizontal pipes. They 



