53 
Table 55. — Weight, composition, and heat of combustion of feces — Metabolism experi- 
ment No. ji. 
Lab- 
ora- 
tory 
No. 
Weight i 
of Water. 
tree-. 
Pro- 
tein. 
Fat. 
Car- 
bohy- 
drates. 
Nitro- 
gen. 
Car- 
bon. 
Grams. 
Grams. Grams. (Trams. Grams. Grams. Grams. 
3083 Total. 13 days-... 831.7 COS. 8 84.0 52.4 52.4 13.47 116. i 
Average. 1 day... 03.9 40.4 (5.5 4.0 4.0 1.04 8.98 
Hydro- 
gen. 
Heat of 
com- 
bustion. 
Grams. Calories. 
16.13 1,307 
1.24 
100 
a This period includes the 3 days of the experiment and 10 days of a preliminary experiment not 
reported herewith. 
The elimination of nitrogen in the urine during this experiment is 
summarized in Table 56, which also gives the details of the* total 
amount of urine and its nitrogen content in each 6-hour period. The 
daily elimination of carbon, hydrogen, water, and energy in the urine 
is shown in Table 57. 
Table 56. — Amount, specific gravity, and nitrogen of urine by she-hour periods — Metab- 
olism experiment No. 21. 
Date. 
Period. 
SSES. S3*. N'trogen content 
Feb. 12-13 
13-14 
14-15 
12-14 
12-14 
7 a.m. to 1 p. m 
1 p.m. to I p.m 
7 p. m. tol a.m 
1 a.m. to 7 a. m 
Grants. 
435. 7 
806.8 j 
224. 
214.4 
Total 1, 680. 9 
Total by c< imposite 1,68 1. 9 
7 a.m. to 1 p.m 588. 9 
1 p. m. to 7 p. m 536. 8 
7 p.m. tol a.m 398.9 
1 a.m. to / a.m 
223.5 
Total 1. 748. 1 
Total by composite 
7 a. m. to 1 p. m 
1 p.m. to 7 p. in 
7 p.m. to 1 a.m 
1 a. m. to 7 a. m 
Total 
Total by composite 
Total. 3 days, by periods 
Total by composite 
1,748.1 
037. 5 
656. 6 
441.5 
229. 7 
, 394. 3 
Percent. Grams. 
1.015 
1.009 
1.015 
1.017 
1.015 
1.010 
1. 012 
1.009 
1.025 
1.013 
0.93 
.58 
.91 
1.74 
.94 
4.05 
4.68 
2.04 
3.73 
14.-50 
14.62 
1.015 
.86 
5.06 
1.014 
.87 
4.67 
1.010 
. 62 
2.42 
1.020 
1.79 
4.00 
16.15 
16.43 
4.27 
4.86 
2.43 
3.88 
1,905.3 . 
15.44 
1, 965. 3 
1. 012 
.79 
15. 53 
5,394.3 . 
46.09 
