Studies in Milk Secretion. 549 



two parts of cotton-seed meal were fed. During the time the 

 cows were at pasture the grain ration was made up of three parts 

 bran and one part cotton-seed meal. The daily winter ration was 

 as follows : 



For the larger cows. For the smaller cows. 



15 lbs. hay. lo lbs. hay. 



50-55 lbs. silage. 40-45 lbs. silage. 



10 lbs. roots. 10 lbs. roots. 



8 lbs. grain. 8 lbs. grain. 



The onl}^ exceptions made to this were that Freddie and Puss, 

 during January, February and March, 1892, had ten pounds of 

 grain instead of eight. The summer grain ration was four pounds 

 per cow except during the month of June when one-half of the 

 cows received no grain whatever. The cows while dry were fed 

 no grain at all, the remainder of the ration being unchanged. In 

 the latter part of the summer, particularly in the months of 

 August and October, the pastures became very short and were 

 supplemented in August with second growth clover, cut and car- 

 ried to the cows, and in October with corn stalks. These were in 

 every case weighed and charged to the cows consuming them. 

 In making up the cost of the food consumed the following scale 

 of prices was used, based as far as possible upon the market prices 

 in Ithaca : 



Hay. $ 9.00 per ton 



Silage 1.75 per ton 



Roots 2.00 per ton 



Wheat bran 18.00 per ton 



Oats .35 per bu. 



Cotton-seed meal 25.00 per ton 



Corn meal 20.00 per ton 



Corn stalks 3.00 per ton 



Grass, cut and carried to cows 1.75 per ton 



Pasture, exclusive of grain and silage crops .30 perw'k 



In Table VI is given the cost of food consumed by each 

 animal ; the total number of pounds of milk and fat produced and 

 the cost of a hundred pounds of milk and one pound of fat for 

 each individual and the average for the whole. The average 

 cost of food consumed was $45.25 ; the highest for any one cow 



