88 Nebraska Agricultural Exp. Station, Research Bui. 6. 
Table 23. — Summary of transpiration, free-water-surface evapo- 
ration, and weather factors during successive hours of the day 
and night. {Only the total water losses were obtained for the 
night.) 1910. x 
Hour ending 
(1) 
NIGHT 
8 p. m. 
9 
10 
11 
12 
1 a. 
2 
3 
4 
5 
6 
7 
Av. for night 
DAY 
Water 
transpired 
from 1 plant 
(2) 
Grams 
Av. water 
evaporated 
from 5 clay 
cup evapo- 
rimeters 
Mean 
tempera- 
ture 
(3; 
Grams 
17 
0.44 
(4) 
Degrees 
75.3 
71.9 
67.8 
66.9 
63.9 
62.0 
61.2 
60.1 
59.2 
58.6 
58.2 
60.1 
F. 
63.8 
Mean 
relative 
humidity 
(5) 
Per cent 
55.8 
64.2 
71.1 
75.1 
80.2 
82.0 
83.0 
84.1 
84.6 
85.7 
85.9 
86.0 
78.1 
8 a. m. 
78 
1.82 
63.9 
78.8 
3.85 
9 " 
121 
2.40 
69.1 
68.7 
5.24 
10 " 
186 
4.02 
74.4 
58.3 
5.76 
11 " 
246 
4.59 
78.3 
50.3 
6.14 
12 " 
261 
5.60 
81.2 
45.9 
6.54 
1 p. m. 
2 " 
305 
5.71 
83.0 
42.3 
7.66 
349 
6.37 
84.1 
40.3 
7.56 
3 " 
327 
5.59 
84.6 
39.0 
7.68 
4 " 
271 
5.83 
84.6 
38.9 
7.60 
5 " 
227 
4.39 
83.9 
39.4 
6.99 
6 " 
203 
3.88 
82.9 
40.8 
6.00 
7 " 
108 
3.46 
80.6 
44.6 
3.72 
Av. for day 
223.5 
4.47 
79.2 
48.9 
6.23 
From Kiesselbach and Montgomery (1911). 
The slight inconsistencies in 1910 are doubtless due in part to 
the short duration. 
Altho only the total water loss was obtained for the night, 
the amount has been arbitrarily distributed in the charts thruout 
the night hours in order to give an approximate graphic compari- 
son with the day loss. 
During both years, the maximum transpiration and evapora- 
