64 PROFITABLE DAIRYING 



a pea. This chemical is a cheap preservative 

 which can be purchased at any drug store and 

 is used to keep the sample from souring. 



Before the milk is sampled it is thoroughly- 

 mixed, as stated under directions for sampling 

 already given, in the chapter on the Babcock 

 test, and a few tablespoonfuls of this milk is 

 placed in the bottle. This sampling is repeated 

 at each successive milking and the sample for 

 testing is taken from this composite sample. In 

 this way a single test will answer for each cow. 

 If the cream in the sample gets thick or churns, 

 it may be easily mixed up again with the milk 

 if the sample bottle is first placed in warm 

 water. In making a composite test, the same 

 care should be exercised in mixing the sample 

 as is necessary in all testing with the Babcock 

 test. 



How to get reliable records. By taking com- 

 posite samples of the milk from each cow in the 

 herd, testing them weekly and keeping an accu- 

 rate record of these tests and of the weight of 

 milk given by each cow every day of her milking 

 period, the dairyman may ascertain for himself 

 exactly what each cow is worth to him. This 

 is the best and only reliable method, and the one 

 followed at most well-regulated dairies. Of 

 course it takes time, but it pays in the long run. 



A shorter method. Fairly accurate results may 



