MILK 417 
pasteurized, and which cannot be sold, except for 
cooking purposes. The best grades of milk are sold in 
bottles. 
15. Testing milk—Whether a dairy cow is profitable 
or not depends as much upon the quality of the milk as 
upon its quantity. The quantity may be determined by 
weighing and recording the amount of milk yielded from 
day to day. The quality of milk may be readily ascer- 
tained by the Babcock tester, a device for separating the 
fat from the rest of the solids in milk, and for measur- 
ing it. By means of this tester and the milk record the 
worth of every animal 
in a herd can be deter- 
mined. Every farmer 
who produces milk or 
butter should own a 
Babcock tester. 
The method of selec- 
Bascock TESTER OUTFIT 
tion and breeding of 
dairy cows has been almost revolutionized since the in- 
troduction of the Babcock test. Not only have dairymen 
been able to remove from their herds the cows that are 
unprofitable, but breeders have been able to mate intelli- 
gently only the very best and thus increase the standards 
of the several breeds. 
