26 
Tables 13-15 give the results of the determinations of carbon dioxid 
and water in the ventilating air current. The method of calculation 
of these tables has been described in some detail in connection with 
the description of results of experiment No. 5, reported in an earlier 
publication. a The formulas in the column headings in some of the 
tables indicate the method by which many of the calculations are 
made. The drip was collected but once a day and the amount has 
been equally apportioned among the four periods of the day. While 
this is undoubtedly erroneous, it has, in view of the lack of any data, 
seemed the most satisfactory plan. Should some other method of 
subdivision seem desirable, all data are given by means of which com- 
putations can be readil} T made. The error involved, however, does not 
affect the final results of the experiments, as the total quantities per 
day are used in the computations. 
Table 13. — Comparison of residual amounts of carbon dioxid and water in the chamber 
at the beginning and end of each period, and the corresponding gain or loss — Metabolism 
experiment No. 11. 
End of period. 
Carbon dioxid. 
Water. 
Date. 
Total 
amount 
in 
chamber. 
Gain( + ) 
or 
loss ( — ) 
over pre- 
ceding 
period. 
Total 
amount 
of vapor 
remain- 
ing in 
chamber. 
Gain(+) 
or 
loss ( — ) 
over pre- 
ceding 
period. 
Change 
in 
weight 
of ab- 
sorbers, 
gain( + ) 
or 
loss ( — ). 
Drip 
from ab- 
sorbers. 
Total 
amount 
gained 
( + )or 
lost (-) 
during 
the 
period. 
1898. 
Mar. 22-23 
Grams. 
29.7 
82.3 
64.4 
30.5 
28.7 
Grams. 
Grams. 
45.0 
54.9 
57.1 
52.3 
47.8 
Grams. 
Grams. 
Grams. 
Grams. 
+52.6 
-17.9 
-33.9 
- 1.8 
+ 9.9 
+ 2.2 
- 4.8 
- 4.5 
+194 
- 22 
- 27 
- 28 
114.5 
114.6 
114.6 
114.6 
318.4 
7 p. m 
94.8 
la.m 
82.8 
82.1 
Total 
- 1.0 
+ 2.8 
+117 
458.3 
578.1 
1 p.m 
23-24 
91.3 
72.8 
26.6 
26.8 
+62.6 
-18.5 
-46.2 
+ .2 
56.6 
56.8 
53.3 
53.2 
+ 8.8 
+ .2 
- 3.5 
- .1 
+235 
+ 7 
- 2 
- 1 
152.0 
152.0 
152.0 
152.0 
395.8 
v 
159.2 
1 a.m 
146. 5 
7 a.m 
150.9 
Total 
- 1.9 
+ 5.4 
+239 
608.0 
852.4 
1 p.m 
24-25 
90.9 
76.7 
25.2 
26.3 
+64.1 
-14.2 
-51.5 
+ 1.1 
61.0 
63.5 
57.3 
55.6 
+ 7.8 
+ 2.5 
- 6.2 
- 1.7 
+ 57 
+248 
-294 
-295 
280.1 
280.0 
280.0 
280.0 
344.9 
7 p.m 
530.5 
1 a.m 
- 20.2 
7 a.m 
- 16.7 
Total 
- .5 

+ 2.4 
-284 
1,120.1 
838. 5 
1 p.m 
25-26 
98.8 
82.0 
32.3 
35.0 
+72.5 
-16.8 
-49.7 
+ 2.7 
62.9 
66.7 
56.7 
56.8 
+ 7.3 
+ 3.8 
-10.0 
+ .1 
+177 
+155 
-223 
-222 
341.7 
341.7 
341.6 
341.6 
526.0 
7 p.m 
500.5 
1 a.m 
108.6 
7 a.m 
119.7 
Total 
+ 8.7 
+ 1.2 
-113 
1, 366. 6 
1,254.8 
Total, 4 days. 
+11.8 
- 41 
3, 553. 
3, 523. 8 
U. S. Dept. Agr., Office of Experiment Stations Bui. 
