218 



ELEMENTS OF FARM PRACTICE 



nothing. At one place the farmers pay three cents a sample 

 for testing. If one has a sample tested each month from a 

 cow, it would cost but thirty-six cents per year, and this 

 would certainly be a pajnng investment. In some places 

 the farmers form a cow-testing association and hire a man 

 to test all the cows. He comes to each farm once a month, 



Figure 94. — A pure-bred Holstein cow. She gave in 30 days 114.9 pounds of butter. 



and weighs and tests the milk from each cow night and 

 morning, then goes to the next farmer. This is a very 

 satisfactory arrangement. 

 Questions: 



1. Why is it wise to weigh and test the milk from each cow? 



2. What are the advantages in weighing the milk from each cow 

 at each milking? • 



3. Tell how you would take a sample of milk for testing? 



