BULLETIN No. 87d. 
33 
bination is above the calculated results. This is quite a perceptible 
and important increase. Besides, in our narrow ratio ration the 
slight loss of protein has passed into the manure pile as available 
nitrogen, whereas there is no such advantage accompanying the loss 
of carbohydrates in our wide ratio ration of corn silage, since the 
air furnishes inexhaustible supplies of the elements of carbohydrates, 
and they have no manurial value, except as humus. Then, too, it 
will be remembered that the heat and force-producing power of carbo¬ 
hydrates and protein in the animal body is only slightly different. 
The foregoing discussion will be continued in the rations of cot¬ 
ton-seed hulls and cotton-seed meal later on. 
10. DIGESTION OF COTTON-SEED HULLS 
* 
By Brindle Cow, Belle of Brookside,* and Black, and Gray 
Goats. 
Date of Experiment—With Brindle Heifer, December and January, 1891-2. 
“ “ —With Belle of Brookside, December, 1890. 
“ “ —With Goats, January, 1892. 
Ration fed—Brindle Cow, 9 pounds per day. 
“ —Belle of Brookside, 21 pounds per day. 
“ —Goats, each, 48 ounces. 
Total period—Brindle Cow, 20 days. 
“ —Belle of Brookside, 12 days. 
“ —Goats, 16 days. 
Collections made on last 6 days for all but Belle of Brookside, 4 
days for her. 
Samples for analysis were taken by placing an ounce of hulls in 
an air-tight jar at each feed. 
Analytical and Other Data for Obtaining the Coefficients of Digesti¬ 
bility. See Tables XNI, XXII, XXIII, XXIV, and XXV. 
* Previously reported in Bulletin 80c, Technical Bulletin No. 3. 
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