14 
BULLETIN 687, U. S. DEPARTMENT OE AGRICULTURE. 
supplied by the rice and tofu, and in the former ate 126 grams of fat 
daily, of which 57 grams was rapeseed oil. Bertarelli 1 conducted a 
series of digestion experiments to determine the relative nutritive 
value of margarin and butter and included an experiment in which 
the subject ate an average of 910 grams of white bread, 250 grains of 
meat, and 61.6 grams of a mixture of olive and colza (or rapeseed) 
oils. He found the total fat of the diet to be 95.82 per cent digested. 
The oil used in the experiments here reported was purchased in the 
open market and was taken to be representative of the edible rape- 
seed oil of commerce. The following tables contain the data obtained 
during the test periods with rapeseed oil : 
Data of digestion experiments with rapeseed oil in a simple mixed diet. 
Weight 
of food. 
Constituents of foods. 
Experiments, subjects, and diet. 
Water. 
Pro- 
tein. 
Fat. 
Carbohy- 
drates. 
Ash. 
Experiment No. 629, subject A. F.: 
Blancmange containing rapeseed oil 
Grams. 
2, 380. 
291.0 
880.0 
152.0 
Grams. 
1, 575. 6 
26.2 
764.7 
Grams. 
90.7 
30.8 
7.0 
Grams. 
262.0 
4.4 
1.8 
Grams. 
274.9 
224.9 
102.1 
152.0 
Grams. 
176.8 
4 7 
Fruit 
4 4 
3, 703. 
59.0 
2, 366. 5 
128.5 
17.7 
110.8 
268.2 
9.1 
259.1 
753.9 
26.8 
727.1 
185 9 
5 4 
180.5 
Per cent utilized 
|.. 
86.2 
96.6 
96.4 97.1 
Experiment No. 630, subject P. K.: 
Blancmange containing rapeseed oil 
2,499.0 
364.0 
570.0 
198.0 
1,654.3 
32.8 
495.3 
95.2 
38.6 
4.6 
275.2 
5.4 
1.1 
288.6 
281.4 
66.1 
198.0 
185.7 
5 8 
Fruit 
2 9 
Total food consumed 
3.631.0 
91.0 
2, 182. 4 
138.4 
27.3 
111.1 
281.7 
11.4 
270.3 
834.1 
46.3 
787.8 
194.4 
6.0 
188.4 
Per cent utilized 
80.3 
96.0 
94.4 
96.9 
Experiment No. 631, subject T. C M.: 
Blancmange containing rapeseed oil 
1, 759. 
291.0 
971.0 
152.0 
1, 164. 4 
26.2 
843.8 
67.0 
30.8 
7.8 
193.7 
4.4 
1.9 
203.2 
224.9 
112.6 
152.0 
130.7 
4.7 
Fruit 
4 9 
Total food consumed 
3,173.0 
2, 034. 4 
105.6 
19.7 
85.9 
200.0 
7.3 
192.7 
692.7 
36.0 
656.7 
140.3 
6 
Amount utilized 
134.3 
Per cent utilized 
81.3 
96.4 
94.8 
95.7 
Experiment No. 632, subject C. J. W.: 
Blancmange containing rapeseed oil 
2, 290. 
420.0 
833.0 
98.0 
1,516.0 
37.8 
723.9 
87.3 
44.5 
6.6 
252.1 
6.3 
1.7 
264.5 
324.7 
96.6 
98.0 
170 1 
6 7 
Fruit 
4 2 
Total food consumed 
3,641.0 
112.0 
2, 277. 7 
138.4 
36.4 
102.0 
260.1 
16.3 
243. 8 
783.8 
51.0 
732.8 
181.0 
Feces 
8.3 
Am mint, utilized 
172.7 
73.7 
93.7 
93.5 
95.4 
Average food consumed per subject per day 
1, 179. 
738.4 
42.6 
84.2 
255.4 
58.4 
1 Riv. Ig. e Sanit. Pub., 9 (1898), No. 15, pp. 570-579. 
