274 Agricultural Experiment Station, Ithaca, N. Y. 



Gazelle, grade Jersey, 6 years and 9 months old, in milk 1 

 month. 



May 2d, ^ Holstein, 1 year and 11 months old, in milk 1 month, 



Nora, -I Holstein, 2 years and 1 month old, in milk 20 days. 



The details of the experiment with the second lot were in all 

 respects the same as with the first, except that they were on the 

 winter feed for a greater part of the time and that the grain fed to 

 the second lot was composed of 8 pounds of a mixture one-fourth 

 bran and three-fonrths gluten meal by weight, and in the feeding 

 we were able to get the cows upon the full feed of 2 pounds of 

 tallow each per day in the third week instead of the fourth. The 

 amount of feed consumed is shown in Table III. No difficulty was 

 found in getting the animals to eat the tallow. The health of all 

 of the animals remained good and no appreciable change in live 

 weight took place. 



It will be seen that the tallow was readily and regularly eaten by 

 nearly all of the animals. The exceptions were that Clara and 

 Gazelle only ate a pound and a half per day during the greater part of 

 the fifth week and Nora refused a part of two feeds in the seventh 

 week. The yield in milk and fat of Lot II is shown in Table lY. 



It will be seen that, as with Lot I, there were no variations in the 

 percentage of fat that could be ascribed to the effect of the tallow. 

 At least, there was no increase. The gi-eatest change in percentage 

 of fat was seen in the gradual decrease in the two two-year-old Hol- 

 stein heifers. May 2d and Nora. There were two fluctuations in the 

 percentage of fat in the cows in both lots, but they were intermit- 

 tent and not progressive. 



The time of the experiment fell very naturally into four divisions 

 or periods : 



First. The period of one week before beginning to feed the 

 tallow. 



Second. The preliminary period of three or four weeks during 

 which the amount of tallow fed was gradually increasing. 



Third. The period of full feeding, six or seven weeks. 



Fourth. The final period of two weeks after the tallow was taken 

 away. 



In table Y the average yield of milk per day for each cow and 

 the average per cent, of fat for the whole period is grouped together, 

 and to this has been added the average yield of milk per day and 

 percentage of fat two months after the close of the experiment. 



