260 Bulletin 38. 



ing, this method, on account of the difference in the quality of 

 milk, was clearly unjust. With a view to furnishing a means for 

 overcoming this injustice the Babcock milk test, among others, 

 was introduced, and today it is used as an arbitrator in practically 

 every creamery and cheese factory in our country. 



But the use of so valuable an accessory to the dairy industry 

 was not to stop with the factory. The fact that milk from differ- 

 ent herds varied in value, applied as well to the milk from differ- 

 ent cows of the herd, and alert dairymen were not slow in taking 

 advantage of this new means of helping themselves to an increased 

 profit by using it in weeding out the poor cows of the herd. To- 

 day intelligent dairymen, not satisfied with herds "as good as the 

 average," sell cows as well as milk by the Babcock test. 



The following may be given as some of the reasons for the 

 almost universal use of this test : 



1 . The first cost is not great and its operation is inexpensive. 



2. The test is accurate and quickly made. 



3. No knowledge of chemistry is necessary in its use. 



4. The per cent of fat is measured directly upon the neck of 

 the test bottle and no calculations are necessary. 



5. Not only whole, sweet milk, but cream, skim milk, butter 

 milk and whey may be tested by its use, and sour milk, as well, 

 if accurately sampled. 



6. But a small quantity of milk is used, and after the sample 

 has been measured into the test bottle it need not be tested for 

 weeks. 



7. The machine is simple and does not easily get out of 

 order. 



The prices at which manufacturers list Babcock testers are as 

 follows: Four bottle machines, $8.00; six bottle machines, $9.00; 

 and eight bottle machines, $10.00. This includes everything nec- 

 essary for testing whole milk, including a small amount of acid. 

 Special bottles for use in testing skim milk and cream come extra, 

 as well as the preservative for keeping milk when composite tests 

 are made. 



The following firms manufacture good machines and are reli- 

 able : Vermont Farm Machine Co. , Bellows Falls, Vt. ; Creamery 



