39 
change of diet. It is possible that nervous excitement may affect the 
excretion of nitrogen and thai the increased elimination of nitrogen 
here observed may have been due in part to an incident which pro- 
duced such excitement at about this time. A recent experiment by 
one of as (F. (i. B.), however, regarding the effect of nervous excite- 
ment on the elimination of nitrogen gave negative results. In experi- 
ment No. 13 the elimination of nitrogen on the fourth day, the day on 
which the experiment would have terminated had there not been an 
accident. was I s grams, a smaller amount than on any of the preceding 
day-. 
Table 32. — Tneonu and outgo of nitrogen <nnl carbon — Metabolism exp< rinu nt No. 13. 
Nitrogen. 
Carbon. 
Time. 
In 
i 1. 
In 
(c) 
In 
urine. 
((0 
Gain 
( + )or 
ss 
a~(b 
(«) 
In 
food. 
In 
feces. 
In 
urine. 
l/M (k) 
In re- Gain 
spira- 
torv 
prod- e-(f+ 
ucts. g+h). 
- - dm ins. 
Nov. 8-9, 7 a. m. to 7 a.m — 18.7 
9-10,7 a.m. to 7 a.m. .. L8.8 
10-11, 7 a.m. to 7 a.m.. 18.7 
d rams. 
1.1 
1.1 
1.1 
(^■ams. i Grams. 
21.1 -3.5 
18.8 -1.1 
18. 6 -1.0 
(irnms. 
245.8 
245.9 
2 15. B 
Grams. 
ll.l 
11.2 
11.1 
drams. 
16.4 
14.6 
14.4 
drams, drams. 
209.8 - 5 
201.0 +18.5 
204.1 +16.2 
Total,: 1 , days .... 56.2 3.3 
Average, l day.. 18.7 1. 1 
58.5 -5.6 737.5 
19.5 -1.9 245.8 
33.4 45.4 615.5 +43.2 
11.1 15.1 205.2 -14.4 
Table 33. — Incomt <nvl outgo of water and hydrogen — Metabolism experiment Xo. IS. 
Time. 
Water. 
(a) 
In 
food. 
(6) 
In 
drink. 
(c) 
In 
feces. 
(rf) 
In 
urine. 
drams. drams. drams. 
m. to 7 a. m 927. i l . 499. 2 51. 7 2. 629. 2 
9-10. 7 a.m. to 7 a.m 927. 4 1.. 500.0 51.7 1,909.1 
10-11, 7a.m. to 7 a.m 927.4 1,500.0 I 51.7 
Total. 3 da ys 2.7S2.2 4,499.2 155.1 
Average, 1 day 927.1 1,499.7 51.7 
drains. 
1,877.5 
(«) , (/) 
Inrespir- Appar- 
atorv ent loss, 
prod- 
ucts. 
a+b— 
drams. drams. 
I -1.097.4 
696. 8 - 230. 2 
755. 2 - 257. 
6,415.8 2.295.1 -1,584.6 
2,138.6 765.0 - 528.2 
Time. 
: i. to 7a. m... 
9-10, 7 a. m. to 7 a. m. . 
10-11. 7 a. m. to 7 a. in. 
Total. :: <lay> 
Average, l day 
Hydrogen. 
(9) 
In 
food. 
(h) 
In 
(i) 
In 
urine. 
(0 
Appar- 
ent gain, 
9- 
Lose 
from 
water. 
(n) 
Total 
gain i f) 
or 
l + m . 
drams. 
1.6 
1.6 
121.',' 
-91.5 
1.6 
4.1 
+ 5.3 
1.6 
1.1 
+ 2.3 
L09.8 
Lfl 
12.8 
■ 92 2 
176.1 
83.9 
1.6 
