Testing Milk on the Farm. 



137 



day of her record as testing day, the total production of 

 milk and fat is shown to be as follows: 



Production of milk and butter fat per day. 



The average daily production of the cow, according to 

 the figures given in the preceding table, was nearly 

 16 Ibs. of milk, containing .78 Ibs. of butter fat. Multi- 

 plying these figures by 307, the number of days during 

 which the cow was milked, gives 4,903 Ibs. of milk and 

 240 Ibs. of fat. This is 141 Ibs. of milk and 14 Ibs. of fat 

 less than the total weights of milk and butter fat, as 

 found by the daily weights and tests, or 2.8 and 5.5 per 

 cent, less, for milk- and fat production, respectively. 

 This is, however, calculated from only ten single weights 

 and tests, while it required over 600 weighings and 300 

 tests of the milk to obtain the exact amount. 



Similar calculations from the records of the other cows 

 gave fully as close results, showing that quite satisfac- 

 tory data as to the total production of milk and butter 



