64 AGRICULTURAL EXPERIMENT STATION. [Jan. 



The same remarks that were made in relation to the pre- 

 vious table apply with equal force here. In Series I. the fat 

 percentage is distinctly higher in a than in &, the per cent, 

 increase in percentage of fat in case of five cows being from 

 2.5 to nearly 17 per cent. In Series II. a, when 2.55 

 pounds of protein were fed, the per cent, increase in the 

 percentage of fat is from 2 to 11.50 per cent, above that 

 obtained in b, when 2.24 pounds of protein Ave re consumed. 

 In Series III. no distinctly noticeable effect of the food is to 

 be seen on the percentage of fiit in the milk. 



In Series I., II. and III. a, when from 2.55 to 2.91 

 pounds of digestible protein were fed daily, the percentage 

 of fat in the milk of each of the cows appears to be very 

 even. Two cows show rather wide variations at times, but 

 this can be accounted for only from the condition of the 

 cow, and not from the food influence. 



It is well known that the fat content of the milk will vary 

 from time to time when the same fodder ration is fed. 



