107 
Table 125. — Gain or loss of protein (XX6. 25) , fat, and water — Metabolism experiments 
Xos. 29 and 31 — Continued. 
Date. 
(SO 
Total 
hydrogen 
gained (+) 
or lost (-). 
or lost (— ),or lost | — ) 
1900. 
Experiment, No. S9. 
Mar. 16-17. 7 a. m. to 7a.m.. 
17-18, 7 a. m. to 7 a. m .. 
18-19, 7 a. m. to 7 a. m . . 
Total. 3 days 
Average. 1 day 
Experiment Xo. 31. 
Mar. 22-23, 7 a. m. to 7 a. m . . 
23-24. 7 a. m. to 7 a. m .. 
24-25, 7 a. ra. to 7 a. m . . 
Total, 3 days 
Average. 1 day 
Grams. 
+25. 9 
+42. 4 
- 3.3 
+65.0 
fa. 7 
H) 
(A) 
Hydrogen 
in protein 
Hydrogen 
in fat 
(*) 
Hydrogen 
in water, 
(I) 
Water 
6 X0.07. 
Grams. 
-0. 
/xO.118. 
or lost (- 
l g-(h+i). 
Grams. 
Grams. 
+29. 6 
-43.7 
+ 1.1 
1.0 
.3 
+ 74.4 
+24.8 
16.1 
- .4. 
23. 4 
- .1 
6 4 
-1.2 
-2.0 
-2. 4 
17.7 
25. 5 
8.8 
+45.9 
+15.3 
-5.6 
-1.9 
52.0 
17.3 
kx\ 
Grams. 
-266.4 
+393.3 
-669.6 
-159.3 
229.5 
- 79.2 
-468.0 
156.0 
Table 126. — Income and outgo of energy — Metabolism experiments Nos. 29 and si. 
Date. 
«0 
Heat of 
com- 
bustion 
of food 
eaten. 
(6) 
Heat of 
com- 
bustion 
of feces. 
1900. 
Experiment Xo. 29. 
Mar. 16-17, 7 a. m. to 7 a. m. . 
17-18, 7 a.m. to 7 a.m.. 
18-19, 7 a.m. to 7 a.m.. 
Total, 3 days 
Average. 1 day 
Experiment No. Si. 
Mar. 22-23, 7 a. m. to 7 a. m. . 
23-24. 7 a.m. to 7 a.m.. 
24-25. 7 a. m. to 7 a. m. . 
Calo- 
ries. 
3,487 
3,487 ! 
3,487 
Calo- 
ries. 
93 
93 
93 
(c) (d) 
Esti- 
mated 
heat of 
Heat of com- 
com- bustion 
bustion of pro- 
of tein 
urine, gained 
! ( + )or 
lost 
(-)• 
Calo- 
ries. 
134 
134 
134 
Calo- 
ries. 
-11 
-35 
-39 
(e) 
Esti- 
mated 
heat of 
com- 
bustion 
of fat 
gained 
( + )or 
lost 
Calo- 
ries. 
-291 
- 76 
-314 
Esti- 
mated 
energy 
of ma- 
terial 
oxi- 
dized 
in the 
bodva— 
(6+c+ 
d+e). 
Calo- 
rics. 
3,562 
3.371 
3,613 
to) 
10, 461 
3,487 
279 
93 
402 
134 
-681 10,546 
-227 3,515 
(?<) (i) 
Heat Heat 
deter- deter- 
mined, mined, 
H pot greater greater 
deter- , ~ )or ( + ) or 
esti- esti- 
mated, mated, 
g-f. h+J. 
Calo- 
ries. 
3,669 
3,430 
3,669 
Calo- 
ries. 
+107 
+ 59 
+ 56 
10. 768 +222 
3,nS9 - 74 
Per ct. 
+3.0 
-1.7 
+ 1.5 
2.1 
3,495 
91 
132 
—35 
- 96 
3, 403 
3, 429 
+ 26 
+ .8 
3,495 
90 
129 
_ 7 
-165 
3,448 
3,413 
- 35 
-1.0 
3,495 
91 
128 
+ 3 
-192 
3,465 
3, 417 
- 48 
-1.4 
Total, 3 days 
10,485 
3,495 
272 
91 
389 
129 
-39 
-13 
-453 
-151 
10. 316 
3, 439 
10,259 
3,420 
Average,! day 
-19 - . 
METABOLISM EXPERIMENTS NOS. 32 AND 34. 
Subject. — J. F. S.j who was also the .subject of several preceding 
experiments. His weight, with underclothing, was about 66.6 kilo- 
grams (145i pounds). 
Occupation 'hiring experiment. — Worked 8 hours a da}' upon a sta- 
tionary bicycle, as in the previous series of experiments. 
