39 



so slight that it only amounts to less than J Ib. of butter per 

 week in favour of lot I. 



Independently of the results of Experiment A, the 

 above table indicates that, as far as the butter-fat is con- 

 cerned, there has been but little advantage from using the 

 heavier ration of concentrated food while the cows were on 

 pasture, for the two lots stand in much the same relation to 



TABLE VIII. AVERAGE PERCENTAGE OF SOLIDS NOT FAT 

 IN MILK FOR 12 WEEKS. 



General average for day's milk ; Lot I. 8*99, Lot II. 8 '82. 

 * Out of a possible of 84. 



each other in this respect at the end of the experiment as 

 they did in the preliminary trials. On the other hand, what 

 is abundantly clear, when Experiments A and B are com- 

 pared, is the effect on both lots of cows of the change from 

 stall-feeding to grass. This has obviously exerted so much 

 influence that it is somewhat difficult to draw satisfactory 

 conclusions as to the real effect of the concentrated food on 

 either lot in Experiment B. 



