DAIRYING 



THE COST OF SKIMMING MILK BY A CENTRIFUGAL 



SEPARATOR. 



346. Many farmers have been accustomed to the inexpensive 

 outfit needed in the gravity process of skimming cream from milk 

 and are inclined to consider the $100 charged for a centrifugal 

 cream separator as more than they can afford to pay, and further, 

 the number of years such a machine may be successfully used, as 

 well as the cost of operating it, are items that may easily make 

 one hesitate to buy one of these machines. 



A little figuring will, however, show that the butter fat that 

 may be saved from the skim milk by the centrifugal separator will 

 soon pay for the machine. 



347. Professor Hunziker in Ind. Bui. 116 gives the following 

 as the average per cents of fat in 223 samples of skim milk col- 

 lected from farms in different sections of the state. One hundred 

 and fifty-six (156) of these were from hand separators with an 

 average of .05% fat; 17 from "deep setting" with an average of 

 .34% fat; 15 from "shallow pan setting" with an average of .50% 

 fat; 35 from "water dilution" with an average of .57$ fat. 



He also gives the following figures which show the value of 

 the fat lost in the skim milk from one to 20 cows in a year on the 

 basis of 85 pounds skim milk in 100 pounds whole milk, an over- 

 run of one-sixth, and butter worth 23 cents per pound : 



Value of Butter Fat Left in Skim Milk. 



Method of Skimming the Milk 



