240 ReEporT oF THE First ASsISTANT OF THE 
the second period the extremes were 36.1 pounds and 15.7 pounds 
in milk yield and 6.72 and 3.00 in average per cent. of fat. For 
the third period the extremes in daily average milk yield were 
29.1 pounds and 15.2 pounds and in the average percentage of 
fat 6.45 and 3.10. 
The results of another feeding trial in which eight cows were fed 
from June 1 to July oi, 1894, are given in Table XI. Alfalfa 
forage was fed during June, and oat-and-pea forage during July, 
mixed clover hay during both months, and one kind of mixed 
grain. From June 1 to 80 alfalfa forage was fed morning and 
noon and clover hay at night. The mixed grain, No. 39, consisted 
of five parts wheat bran, one part ground oats, five parts corn 
meal and one part wheat middlings. The grain represented 41.9 
per cent. of the cost of the ration and supplied 27. 2 per cent. of 
the total digestible nutrients. The forage represented 36.4 per 
cent. of the cost of the ration and supplied 54.5 per cent. of the 
total digestible nutrients. From July 1 to 31 oat-and-pea forage 
was fed morning and noon, and hay at night; the same mixed 
grain morning and night as before. The grain representea 41.6 
per cent. of the total cost of the ration and supplied 20.8 per cent. 
of the total digestible nutrients. The forage represented 36.8 
per cent. of the total cost of the ration and supplied 64.8 per 
cent. of the total digestible nutrients. The ration for the second 
period had a little wider nutritive ratio than that for the first. 
There was an increase in the amount of each digestible con- 
stituent and an increase of the fuel value. The cost of the ration 
was somewhat less. There was a decrease in milk yield at about 
the normal rate; the percentage of fat was, however, slightly 
lower. There was a slight increase in the cost of milk and mor2 
in the cost of fat. The average gain in weight per cow for June 
was 11.6 pounds and for July two pounds. 
’ The greatest daily average milk vield for June was 31.9 pounds 
and the least 22.7 pounds. The highest average per cent. of fat 
was 4.69 and the lowest 3.20. For July the greatest daily aver- 
age milk yield was 34.4 pounds and the least 16.4 pounds. The 
highest average per cent. of fat was 5.25 and the lowest 2.99. 
The following table shows the composition of each food used in 
this trial : : 
