32 
METABOLISM EXPERIMENT NO. 13. 
Subject. — E. O., as in experiment No. 11. His weight without 
clothing was 70 kilograms (154 pounds). 
Occupation during experiment. — Reading, writing, etc., with little 
muscular activity. The experiment was a so-called rest experiment, 
although the subject moved around rather more than in earlier and 
later experiments of a similar kind. 
Duration. — Three days, beginning at 7 a. m. November 8, 1898. 
The preliminary- period of the experiment began with breakfast. 
November 4. The subject entered the calorimeter on the evening of 
November 7. It was intended to continue this experiment four days, 
but the discovery of a leak in the ventilating air pipe beyond the point 
where the samples for analysis were taken necessitated discarding the 
results for the fourth day. 
Diet. — The diet during the experiment was quite similar to that in 
experiment No. 11, except that it furnished 117 instead of 124 grams 
of protein and 2,596 instead of 3,862 calories of energ} T per day. The 
kinds and quantities of food served at each meal and the quantities of 
drink consumed each day were as follows: 
Table 21. — Diet in metabolism experiment No. 13. 
FOOD. 
Food materials. 
Breakfast. 
Dinner. 
Supper. 
Total. 
Beef 
Grams. 
100 
10 
210 
Grams. 
135 
1-5 
Grams. 
Grams. 
23.5 
Butter 
20 
390 
45 
600 
L50 
100 
150 
•50 
•50 
125 
275 
50 
25 
10 
2-5 
20 
10 
40 
DRINK. 
Time. 
Coffee 
infusion. 
Water. 
Time. 
Coffee w ., T( . r 
infusion. Water - 
Breakfast 
Grams. 
300 
Grams, 
Grams. 
300 
Grams. 
10.30 a. m 
200 
10. 00 p. m 
200 
300 
Total for dav 
Dinner 
900 
200 
3.30 p. m 
The general routine of the experiment is indicated in the following 
schedule. The statistics of the diary kept by the subject are sum- 
marized in Table 23. 
