DIGESTIBILITY OF SOME BY-PRODUCT OILS. 7 
kernels, without crushing them, by mechanical means and finally by 
hand picking.) The cleaned, thoroughly dried kernels were ground 
(using the fine knife) with an ordinary household meat chopper. 
The oil was expressed from the finely cut kernels by means of a 
laboratory press which developed a pressure of approximately 2,700 
pounds per square inch and which was secured for the purpose from 
the Drug Plant and Poisonous Plant Laboratories of the Bureau of 
Plant Industry. The oil which was obtained in this manner was free 
from sediment, of a light-yellow color, and possessed a bland, fatty 
taste. When a sample mixed with vinegar and condiments was pre- 
pared as a French dressing, its origin could not be detected by those 
unaware of its source, though all agreed that the dressing was unusu- 
ally appetizing. 
The cherry-kernel oil was thoroughly mixed and incorporated in 
the usual cornstarch blancmange. The essential data resulting from 
the tests made with this oil are reported in the tables which follow : 
Data of digestion experiments icith cherry-kernel oil in a simple mixed diet. 
Weight 
of food. 
Constituents of foods. 
Experiment, subject, and diet. 
Water. 
Protein. 
Fat. 
Carbo- 
hydrate. 
Ash. 
Experiment No. 673, subject A. A. F.: 
Blancmange containing cherry-kernel 
oil 
Grams. 
1,681.0 
345.0 
850.0 
179.0 
Grams. 
780.0 
31.0 
738.7 
Grams. 
59.8 
36.6 
6.8 
Grams. 
157.0 
5.2 
1.7 
Grams. 
669.2 
266.7 
179lo 
Grams. 
15.0 
5.5 
Fruit 
4.2 
3,055.0 
65.0 
1,549.7 
103.2 
18.0 
163.9 
10.6 
1,213.5 
27.6 
24.7 
8.8 
85.2 
82.6 
153.3 
93.5 
97.3 
1,185.9 
97.7 
15.9 
64.4 
Estimated digestibility of oil alone (per 
cent) 
Experiment No. 674. subject P. K.: 
Blancmange containing cherry-kernel 
oil 
2,366.0 
304.0 
403.0 
148.0 
1,097.8 
27.4 
350.2 
84.2 
32.2 
3.2 
221.0 
4.5 
.8 
941.9 
235.0 
46.8 
148.0 
21.1 
Wheat biscuit 
4.9 
Fruit 
2.0 
Total food consumed 
3,221.0 
66.0 
1,475.4 
119.6 
20.5 
226.3 
10.2 
1,371.7 
30.0 
28.0 
5.3 
Amount utilized 
99.1 
82.9 
216.1 
95.5 
98.3 
1,341.7 
97.8 
22.7 
81.1 
Estimated digestibility of oil alone (per cent) 
Experiment No. 675, subject J. C. M.: 
Blancmange containing cherry-kernel 
oil 
2,149.0 
282.0 
635.0 
192.0 
997.2 
25.4 
551.8 
76.5 
29.9 
5.1 
200.7 
4.2 
1.3 
855.5 
218.0 
73.6 
192.0 
19.1 
4.5 
Fruit 
3.2 
Total food consumed 
3,258.0 
76.0 
1,574.4 
111.5 
22.8 
206.8 
9.9 
1,339.1 
35.9 
26.8 
7.4 
Amount utilized 
88.7 
79.6 
196.3 
95.2 
98.8 
1,303.2 
97.3 
19.4 
Digestibility of entire ration (per cent). . 
72.4 
"RstiTTiai.firl digestibility nf nil al^np 
