103 



TABLE XLIII. AVERAGE PERCENTAGES OF BUTTER-FAT 

 IN MILK FOR EACH OF 8 WEEKS AND 10 WEEKS. 



r Out of a possible of 56. 



t Out of a possible of 70. 

 LOT I. 



LOT II. 



For 



8 weeks. 



Average percentage of butter- 

 fat in total daily yield ... 3 '46 

 Total butter-fat per day ... 477 lb. 



For 



10 weeks. 



3-49 



4-77 lb. 



For 

 8 weeks. 



3-41 

 4-86 lb. 



For 

 10 weeks. 



3-45 

 4-83 lb. 



In the previous experiments it was concluded that the 

 effect of the brewers' grains was to produce no effect in the 

 long- run in the quality of milk. In the present experiment a 

 similar result is shown. In both lots the percentage of fat 

 on the average is considerably higher than in the previous 

 experiment. There is no doubt that the period of lactation 



