T3 



on a level at the end of tlie preliminary trials, as far as the 

 milk-yield was concerned, but at the end of the first five weeks, 

 there was actually an advantage in favour of lot II. of 2 pints 

 per day, although it was the other lot which received the cake 

 and meal. The results during the second period of Experi- 

 ment H are almost identical with those of the second period 

 of Experiment Gr the previous summer, there being in both 

 experiments a drop in the average in the second period as 

 compared with the first, and a greater drop in 1906 than in 

 1905. Lot II. also in Experiment H dropped more, relatively 

 to lot L, during the second period than was the case in Experi- 

 ment G. Taking the whole period of ten weeks, lot I. gave, 

 on the average, less than 1 pint per day more milk than lot 

 II., in spite of the daily allowance of cake and meal supplied 

 to it throughout the experiment. When the second period 

 alone is considered, the yield in lot I. appears to have been 

 kept up, until the last week, better than in lot II., but 

 considering the dryness of the summer, it is somewhat surpris- 

 ing that the difference between the two lots was not much 

 greater during August than it was. The difference shown in 

 the table is certainly not enough to make the use of the 

 concentrated food profitable, and especially when it is remem- 

 bered that during the second period lot I. was receiving double 

 the quantity of cake and meal it received in the first period. 

 Taking the two experiments together, the results indicate 

 clearly that the advantage accruing from using concentrated 

 food of this description on grass of average quality during the 

 summer months is, on the whole, surprisingly small. When 

 the pasture becomes dry and the keep short, a small quantity 

 may, perhaps, be used, but if the cows are far advanced in the 

 lactation period, even this is not to be greatly recommended. 

 The increasing of the quantity of concentrated food in lot 

 I. during the second period was attended with much the same 

 result in both experiments. In neither case did it increase 

 the milk yield, nor is it at all clear that it even prevented the 

 falling off in the yield. 



