&& 



The cows used were as follows 



Name. 



Breed, 



Age. 



Day sinces 

 calving. 



Weight when 

 test began. 



Ada 



•Queen... 

 Rozena.. 

 Hypatia. 

 Annie. . . 



Jersey . . . . 

 Holstein . 

 Holstein . 

 Jersey.. . . 

 Jersey •. . 



8 years . 

 8>2 years. 

 8% years. 

 4 years. 

 10 years. 



110 

 81 



119 

 19 



80 



Lbs. 

 816 

 980 



1150 

 733 

 762 



The experiment was divided into two periods of four 

 w^eeks each, each period being preceded by a prepara- 

 tory period of one week during which the cows were 

 accustomed t-o the food Avhich they were to receive dur- 

 ing the next period. 



During the first period Ada and Queen received the 

 cotton seed ration, Kozena and Annie meantime getting 

 the ration of cotton seed meal and hulls. During the 

 second period the rations were reversed, so that each lot 

 of cows was fed for one whole period on each kind of 

 food. Annie refused the cotton seed ration and hence 

 in the second period it was necessary to substitute 

 Hypatia. 



Composite samples of the milk were tested weekly by 

 the Babcock test and the amount of fat thus found was 

 <?onverted into butter by the usual method of multiply- 

 inof bv one and one- sixth. 



