81 
Duration. — Experiments Nos. 26 and 28 form the first and last of a 
series of 3 experiments which were made for the purpose of studying 
the relative replacing power of isodynamic amounts of different mate- 
rials; the intermediate experiment is not reported here. The usual 
preliminary period of ± days duration began with breakfast February 
10, 1900, and ended with supper February 13. The subject entered 
the calorimeter on the evening of February 13 and experiment No. 26 
began at 7 a. m. February 14, continuing 3 days. Experiment No. 28 
began at 7 a. m. February 20, and continued until 7 a. m. February 23. 
Diet. — The diet consisted of a basal ration furnishing about 99 
grams of protein and 1,982 calories of energ}^ per day. To this, in 
experiment No. 26, was added 63.5 grams of butter, furnishing 1 gram 
of protein and 508 calories of energy. In experiment No. 28 the 
material added consisted of 128 grams of cane sugar, furnishing 507 
calories of energy per day. The protein and energy were thus prac- 
tically the same in both of the experiments. The kinds and quantities 
of food in the basal ration as served for each meal, the character and 
amount of the supplemental ration in the different experiments, and 
the quantity of drink consumed at different periods of the day in each 
experiment were as follows: 
Table 96. — Diet in metabolism experiments Nos. 26 and 28. 
FOOD— BASAL RATION. 
Food materials. 
Breakfast. 
Dinner. 
Supper. 
Total. 
Beef 
Grams. 
35 
10 
300 
50 
Grams. 
50 
12 
400 
100 
30 
Grams. 
Grams. 
85 
Butter 
8 
300 
50 
30 
25 
30 
Milk 
1,000 
200 
Bread 
Ginger snaps 
60 
Parched cereal 
25 
15 
50 
Sugar 
15 
FOOD-SUPPLEMENTAL RATION. 
Experiment No. 26 63.5 grams butter per day. 
Experiment No. 28 128 grams sugar per day. 
DRINK. 
Time. 
Water. 
Grams. 
100 
200 
200 
Time. 
Water. 
Breakfast 
9 p. m 
Grams. 
300 
10 a. m 
Total for dav 
800 
3 p. m 
13007— No. 109—02- 
