88 



EXPERIMENT STATION. 



[Jan. 



end of the experiment; the weights, however, were probably 

 sufficient to give an accurate average iveight of each animal. 

 Sampling and Testing the Milk. — A composite samjile of 

 each cow's milk was made for five consecutive days, and pre- 

 served with bichromate of potash. Great care was used to se- 

 cure representative samples. The total solids and fat were 

 determined l)y approved gravimeti-ic methods. 



At least a week elapsed after the animals were placed upon 

 full rations before the experiment proper began. 



Areragp Daih/ Fat ions fed to the Six Cows (Pounds). 



Each of the cows received 3 pounds of bran and 12 pounds 

 of beets daily. One of the cows, Ada^ received only 5 pounds 

 of corn or gluten meal per day, while the others received each 

 pounds. The amount of hay fed differed slightly in the case 

 (if individual cows, dc])onding upon their ability to utilize it. 

 The hay was of good quality, containing 0.73 per cent, of crude 

 protein; the bran 10.20 per cent.; the gluten meal 42.73 per 

 cent., and the corn meal 11. 30 per cent., all on a dry-matter 

 basis. 



Tt will be seen that the basal ration consisted of hay, beets 

 and brnu, nnd thnt the vni'iable factor was the corn or gluten 

 meal. 



