THE BABCOCK TEST 



107 



LESSON XXXII 



THE BABCOCK TEST 



If the school can not be provided with a Babcock 

 tester, this lesson will have to be omitted. The lesson 

 is such an important one, and the ownership of a Bab- 

 cock tester by the school 

 would be such a valuable 

 thing for the whole commu- 

 nity, that the teacher should 

 make every effort to get the 

 material for this lesson. 



Because of its simplicity, 

 accuracy, and ease of opera- 

 tion, the Babcock test has be- 

 come the standard test for de- 

 termining the value of milk 

 and cream as delivered to the 

 cheese factories, creameries, 

 and all milk stations over this 

 country. 



Complete directions for 

 using come with every ma- 

 chine, and it will not be nec- 

 essary to give them here. Ob- 

 serve great care for accuracy. 

 Have some pupil bring a sample of milk from one of 

 the cows at home. The sample should be taken after 

 the milking is done, and the milk has been poured two 

 or three times from one vessel to another so as to be 



Open. 



ClOMd. 



FIG. 37. A BABCOCK TESTER 



