AT NIGHT, FROM THE EARTH, ETC. 203 
Table (Continued). 
- 
from the effects of radiation, above that of a similar thermometer fully exposed to the sky, placed 
In air sis inches 
high. 
On white raw 
wool. 
On fine flax. 
On coarse flax. 
On white 
un wrought cotton 
wool. 
On lead. 
On blackened tin. 
On white tin. 
In focus of 
metallic parabolic 
reflector. 
Mean 
Number 
of 
nights. 
Mean 
Number 
Mean 
Number 
Mean 
Number 
Mean 
Number 
Mean 
Number 
Mean 
Number 
of 
nights. 
Mean 
Number 
of 
nights. 
Mean 
Number 
of 
nights. 
excess. 
excess. 
of 
nights. 
excess. 
nights. 
excess. 
of 
nights. 
excess. 
of 
nights. 
excess. 
of 
nights. 
excess. 
excess. 
excess. 
o 
o 
o 
o 
0 
o 
2-8 
i 
5-8 
6 
5-5 
9 
4-6 
6 
70 
2 
6-6 
3 
2-5 
i 
2-5 
i 
2-5 
i 
4-6 
3 
4-5 
2 
4-3 
2 
1-5 
2 
60 
7 
6-1 
7 
51 
7 
4-0 
6 
5-7 
7 
7-0 
7 
5 6 
7 
6-7 
7 
6-3 
7 
2-6 
7 
7-4 
6 
6-8 
6 
4-9 
6 
4-6 
6 
31 
6 
8-0 
5 
73 
5 
5-3 
i 
4-2 
5 
123 
2 
13-2 
2 
9-0 
2 
7-3 
2 
8-7 
1 
8-7 
1 
60 
5 
91 
8 
90 
8 
j 
-1-3 
1 
8-5 
7 
7-7 
7 
... 
4-8 
9 
6-5 
5 
60 
6 
7-9 
1 
7-6 
5 
6-3 
5 
8-8 
1 
... 
6-3 
1 
6-6 
3 
, 
57 
3 
0 
0 
2-8 
4 
2-6 
12 
3-2 
6 
3-8 
5 
3-9 
2 
2-0 
2 
... 
51 
3 
2-4 
6 
3-3 
7 
20 
5 
2-9 
4 
21 
4 
2-2 
15 
2-4 
16 
20 
8 
2-4 
17 
... 
30 
17 
3-5 
7 
3-7 
7 
3-3 
17 
3-6 
8 
25 
8 
5-5 
6 
4-6 
6 
0-7 
8 
4-7 
6 
5-1 
6 
3-3 
7 
3-5 
8 
3-8 
8 
2-9 
8 
1-8 
8 
5-2 
3 
4-9 
3 
2-6 
3 
21 
3 
8-7 
4 
8-4 
4 
4 1 
9 
1-8 
2 
2-5 
2 
3-7 
2 
3-3 
3 
3-6 
3 
31 
4 
6-5 
5 
60 
6 
4-4 
7 
3-5 
6 
5-4 
5 
7-1 
10 
4-7 
10 
2-5 
12 
2-9 
11 
2-4 
23 
3-4 
23 
The following Table contains the mean of the values in each year, and for the 
whole time according to the number of observations. 
2 d 2 
