41 



SECOND SERIES OF EXPERIMENTS. 



As soon as the first series of experiments was completed, 

 it was decided to carry out a second series on the same lines, 

 and to commence sufficiently early in the winter so that the 

 two sets of trials, covering altogether six months, could be 

 completed before the cows were turned out to grass. Accord- 

 ingly, ten fresh cows, all shorthorns, which had calved during 

 September, were selected in the beginning of October, 1904, 

 and preliminary trials extending over one month were 

 commenced. 



TABLE X. YIELD OF MILK AND PERCENTAGE OF BUTTER-FAT 

 IN PRELIMINARY TRIALS. 



Preliminary trials. The preliminary trials were con- 

 ducted as in the previous case. Each cow was tested for 

 yield of milk and quantity of butter-fat once per week 

 throughout the month of October. When the results were 

 obtained, the cows were divided into two lots according to the 

 average yield of milk and quantity of butter-fat, and not, as 



