On some Meteorological Conditions controlling Nocturnal Radiation. 383 
TABLE 2. 
Time. 
D. 
Cloud. 
Dew-point. 
Relfljtive 
Humidity. 
Wind. 
XX. 
3-7 F. 
% 
82 
46-3 F. 
- 
% 
60-5 
M. per H. 
4-3 
XXI. 
3-4 
86 
46-0 
62-2 
4-7 
XXII. ... 
3-3 
89 
46-1 
64-7 
4-9 
XXIII. ... 
3-2 
88 
45-9 
66-4 
4-9 
Midnight 
31 
78 
45-8 
68-3 
4-8 
Average . . . 
3-3 
85 
46-0 
64-4 
4-7 
TABLE 3. 
Time. 
D. 
Cloud. 
Dew-point. 
Relative 
Humidity. 
Wind. 
XX. 
5-5 F. 
% 
32 
43-4 F. 
% 
56-2 
M. per H. 
3-2 
XXI. 
5-4 
27 
43-2 
59-3 
3-0 
XXII. ... 
5-3 
24 
43-1 
61-9 
2-9 
XXIII. ... 
5-3 
25 
43-0 
64-3 
' 2-9 
Midnight 
5-1 
23 
43-0 
67-0 
3-0 
Average . . . 
5-3 
26 
43-1 
61-7 
3-0 
TABLE 4. 
Time. 
D. 
Cloud. 
Dew-point. 
Relative 
Humidity. 
Wind. 
XX. 
7^3 F. 
o/ 
/o 
36-9 F. 
% 
55-0 
M. per H. 
3-0 
XXI 
7-2 
36-3 
57-3 
3-2 
XXII. ... 
7-0 
35-7 
59-1 
3-3 
XXIII. ... 
6-8 
35-5 
60-9 
3-5 
Midnight 
6-6 
35-2 
62-8 
3-6 
Average . . . 
7-0 
35-9 
59-0 
3-3 
