56 



allowance averaged 7 pounds per head daily. The ra- 

 tions of the two lots of cows were in time reversed so 

 as to eliminate any possible inequality due to the indi- 

 viduality of the cows. For the sake of simplicity we 

 shall hereafter speak of the one as the vetch ration and 

 of the other as the bran ration. 



The vetch ration consisted of a daily allowance of 

 17.8 pounds of food per day and the bran ration of 18.2 

 pounds. This gives slight advantage in the amount of 

 food to the cows on the bran ration. 



The following prices for food stuffs are assumed as 

 average local prices on the farm for the last two win- 

 ters : 



Cotton seed, |12.00 per ton. 



Wheat bran, |20.00 per ton. 



Vetch hay, flO.OO per ton. 



Cowpea hay, $10.00 per ton. The actual prices for a 

 small i>ortion of the food varied from this average; for 

 example, the supply of home-grown peavine hay becom- 

 ing exhausted before the conclusion of this experiment, 

 it was necessarv to buv a few bales at one dollar per 

 hundred weight. 



The vetch hay was of good quality, though it con- 

 tained a small amount of coarse oat hay, it being nec- 

 essary to sow oats or other grain with vetch to hold the 

 slender vetch plant off the ground. 



The cows used were as follows : 



♦Heifers with first calves. 



