CARE OF MILK AND CREAM 



141 



The cooler must stand in a place where the air 

 is fresh and pure away from all bad smells and dust, 

 otherwise the bene- 

 fits of airing are 

 spoilt. If no pro- 

 perly ventilated 

 room is available for 

 this purpose, it is 

 much better to do it 

 outside in the fresh 

 air as long as there 

 isnodustorfoulair. 



The circular 

 type of aerator will 

 only stand about 8 

 Ibs. of water pres- 

 sure to the square 

 inch, while the or- 

 dinary milk cooler 

 on the market will 

 stand about 25 Ibs. 

 to the square inch. 

 If water is not laid 

 on,thena50-gallon 

 tank or barrel ele- MILK AERATOR AND COOLER. 



vated 12 feet above the inlet to the cooler gives about 

 the required pressure. The water must be put in 

 at the bottom of the pipes so that it runs up and out 

 at the top of the cooler, and not from top to bottom. 



