This ration has a nutritive ratio of i to 6, or, to state the 

 matter more fully, it furnishes one pound of digestible albumi- 

 noids to six pounds of digestible non-albuminoids. 



Analyses of the milk of the different cows were made daily, 

 and in the following tables the daily yield of milk and its per 

 cent of fat are averaged for the entire j^eriod. 



At the close of the preliminary period, group i had clover 

 hay substituted for mixed and oat hay ; in period 3, mixed 

 hay took the place of clover ; and in jDeriod 4, they returned 

 to the preliminary ration. 



Table i shows how these changes affected the supply of 

 albuminoids and non-albuminoids, and hence the nutritive 

 ratio ; also the average daily yield of milk, and its per cent 

 of fat. 



Table i, 



Duchess, 2d, was slightly ofl'feed during the last few days of 

 period i, and the first few days of period 2, which will explain 

 the rather sharp decrease in her yield of milk. 



Group 2 received vetch hay in period 2 ; in period 3, mixed 

 hay replaced the vetch hay, and the quantity of both ensilage 

 and dry fodder was reduced one fifth, corn meal taking its place. 

 Table 2 shows the variations in the rations of group 2, and the 

 results. 



