THE DAIRY HERD. 15 



least 200 Ibs. annually. Now let us test each 

 cow and learn what she is doing. 



Testing the cows. There are many ways of 

 applying the test. So far as frequency of ap- 

 plying it is concerned if a person wishes to 

 know exactly what a cow is doing the milk 

 must all be weighed and a sample taken from 

 every milking and tested. The composite test 

 (which will be referred to elsewhere) can be 

 used for this work. A reasonably reliable test 

 can be secured by testing one day in each month; 

 a more reliable one by testing twice per month. 

 For the past year's work I have adopted the 

 plan of making three tests with four months 

 between each test, each test to cover three 

 days' time, a record of each milking to be kept, 

 and a sample of milk from each milking to be 

 put in a bottle that is to be marked with the 

 name or number of the cow the milk is from. 

 For taking the samples have your tinsmith 

 make you a little cup one inch in diameter 

 and two and a half inches deep. This will hold 

 about one ounce and is sufficient. When a cow 

 is milked first weigh and record the weight of 

 the milk, then pour it from one pail to another 

 back and forth three times, then take the little 

 ounce cup full and put it into the sample bot- 

 tle or jar. A pint fruit jar can be used for this 

 purpose, or an eight-ounce bottle can be used 

 by having a small funnel to fill with. 



