Niew York AGRIcoULTURAL ExPERIMENT STATION. 205 
and the total digestible nutrients were increased together with a 
little increase in the cost of the ration ; the fuel value was higher, 
the digestible fat remained about the same and the amount of 
protein was much less. The milk yield, however, was slightly 
increased. The cost of milk was the same and the cost of fat was 
a little higher. 
In table IV are given the results obtained in a feeding trial 
from May 15 to July 15, 1892. During June alfalfa forage was 
fed, and for comparison with the results obtained then, those of 
the 15 days preceding and for the 15 days following are 
given. Fourteen cows were used in this feeding trial of the aver- 
age age at its beginning of 3.4 years. They had been in milk on 
the average 3.6 months when the trial began. 
From May 16 to 31, inclusive, corn silage was fed at noon, 
mixed hay morning and night and a mixed grain (No. 25) — con- 
sisting of six parts wheat bran, two parts ground oats, two parts 
wheat middlings, one part linseed meal, O. P. and three parts 
cottonseed meal. The same ration had also been fed for the first 
part of the month. . Of the cost of the ration, 45.8 per cent. was 
represented by the grain, 16.6 per cent. by the silage. Of the 
total digestible nutrients, the grain supplied 32.1 per cent. and 
the silage 26 per cent. 
From June 1 to June 30, alfalfa forage was fed morning 
and noon, hay at night, and a mixed grain (No. 26) which con- 
sisted of six parts ground oats, three parts corn meal, and two 
parts cottonseed meal. Of the cost of the ration the grain 
_ represented 51.8 per cent., and the forage 30.0 per cent. The 
grain supplied 34.6 per cent. of the digestible nutrients and the 
forage supplied 45.6 per cent. 
From July 1 to July 15 the oat-and-pea forage was fed 
morning and noon, and hay at night. The same kind of mixed 
grain was fed as during June. The grain represented 49.7 per 
cent. of the cost of the ration, and the forage 32.7 percent. The 
grain supplied 26.0 per cent. of the digestible nutrients and the 
forage 59.1 per cent. 
During the first period the cows lost in weight an average of 
over 15 pounds. During the second, an average of 16 pounds, 
and gained during the third, about 30 pounds on the average. 
For the first period the greatest daily average milk yield was 
30.7 pounds, and the smallest, 14.5 pounds. The highest average 
