DAIRYING 



of milk it was skimming per hour may be calculated by multiply- 

 ing the weights obtained by 120. If one-half a pound of cream 

 and 5 pounds of skim milk were collected in one-half minute, 

 there w r ere S l / 2 pounds of milk passing through the bowl in one- 

 half minute, and this is at the rate of 5 l /> x 120, or 660 pounds per 

 hour. Hence the capacity of the separator at that trial was 660 

 pounds per hour. 



Careful tests of samples of skim milk and of cream taken 

 each time will demonstrate the skimming efficiency under the 

 varying conditions of speed, temperature of milk, and capacity, 

 that may be tried. 



PLATE 8 The Tubular Cream Separator. 



291. In making tests of any separator the printed directions 

 furnished by the manufacturer should be carefully .read, and al- 

 ways followed whenever the machine is used. The book of in- 

 structions should be as carefully kept as any of the various 

 parts of the machine, as it may be the means of preventing large 

 losses in using the separator each day, and it is also essential for 

 ordering new parts or in getting repairs when needed. 



