DAIRYING 



19 



somewhat, but not to the temperature of the air; it is a good 

 preliminary treatment before cooling further in cans as described 

 in the first case. 



Plate 8. Milk Cooler. 



It is obvious that the air must be dust-free and odorless 

 when this method of cooling is used. 



Plate 9. The Champion Milk Cooler. 



Third, by allowing the milk to flow in a thin layer over a 

 metal surface which is cooled with water or brine. 



