CARE OF THE MILK 



95 



and that, if revolved rapidly, they will pass to the 

 outside of the whirling column of milk, leaving the 

 light or fatty part of the milk in the center. A 

 means of discharge being provided for the outside 



FIG. 17 THE DE LAVAL CREAM SEPARATOR 



BIRD" 



HUMMING 



of the column, and another for the inside, or center, 

 the fat or cream will come from one opening and 

 the skim milk from the other. Various inventions 

 and improvements have contributed to make the 

 centrifugal separator almost perfect in its opera- 



