DIGESTIBILITY OF SOME BY-PRODUCT OILS. 15 
Data of digestion experiments with tomato-seed oil in a simple mixed diet — Con. 
Weight 
of food. 
Constituents of foods. 
Experiment, subject, and diet. 
Water. 
Protein. 
Fat. 
Carbo- 
hydrate. 
Ash. 
Experiment No. 609, subject J. C. M.— Con. 
Grams. 
Grams. 
Grams. 
57.4 
Grams. 
91.4 
97-5 
Grams. 
95.7 
Grams. 
88.6 
Estimated digestibility of oil alone (per 
Experiment No. 610, subject C. J. W.: 
Blancmange containing tomato-seed oil. . 
1,960.0 
469.0 
746.0 
45.0 
1,016.1 
42.2 
648.3 
35.5 
49.7 
6.0 
178.2 
7.0 
1.5 
644.4 
362.6 
86.5 
45.0 
85.8 
7.5 
Fruit 
3.7 
Total food consumed 
3,220.0 
103.0 
1,706.6 
91.2 
32.1 
186.7 
16.3 
1,138.5 
45.8 
97.0 
8.8 
59.1 
64.8 
170.4 
91.3 
96.6 
1,092.7 
96.0 
88.2 
Digestibility of entire ration (per cent) . . 
90.9 
Estimated digestibility of oil alone (per 
Average food consumed per subject per day.. 
1,055.6 
572.6 
26.8 
59-1 
366.4 
30.7 
Summary of digestion experiments with tomato-seed oil in a simple mixed diet. 
Subject. 
t 
Digestibility of entire ration. 
Estimated 
digesti- 
Experiment No. 
Protein. 
Fat. 
Carbo- 
hydrate. 
Ash. 
bility of 
tomato- 
seed oil 
alone. 
608 
P. K 
Per cent. 
68.3 
57.4 
64.8 
Per cent. 
88-1 
91.4 
91.3 
Per cent. 
98.1 
95.7 
96.0 
Per cent. 
91.6 
88.6 
90.9 
Per cent. 
93.3 
609 
J. C. M 
97.5 
610 
C. J. w 
96-6 
Average 
63.5 
90-3 
96.6 
90.4 
95-8 
In the tests with tomato-seed oil the digestibility of the diet as a 
whole was found to be 63.5 per cent for protein, 90.3 per cent for fat, 
and 96.6 per cent for carbohydrate. On an average, the subjects ate 
27 grams of protein, 59 grams of fat, and 366 grams of carbohydrate, 
the energy value of which was 2,100 calories. The subjects ate ap- 
proximately 57 grams of tomato-seed oil daily. In one instance, Ex- 
periment No. 608, subject P. K., an average of over 67 grams of fat 
or approximately 65 grams of tomato-seed oil was eaten daily. In all 
of the tests the subjects reported that they were in normal physical 
condition and so it may be assumed that tomato-seed oil is fairly well 
tolerated by the human body. 
DISCUSSION. 
The table beyond summarizes the results of the digestion experi- 
ments with oils expressed from apricot, cherry, and peach kernels, 
and from melon, pumpkin and tomato seeds. The figures reported 
