RIPENING AND CHURNING CREAM. 



185 



cream. This is a slow process and taxes a 

 person's patience. Several years ago I devised 

 a cooler consisting of a series of pipes like a 

 single horizontal steam radiator. This is sus- 



GTTRI/ER'S CIRCULATING COOLER. 



pended in the vat and worked mechanically up 

 and down ; at the same time cold water is run- 

 ning through it constantly. I believe this to 

 be the first circulating cooler used and it is not 



