174 
MR. GLAISHER ON THE RADIATION OF HEAT. 
Table LXXX. 
General state of the sky 
during the night previous to 
reading the instruments. 
1843. 
June. 
Reading of 
thermo- 
Excess of the reading of a thermometer in air, at the height of 4 feet 
and protected from the effects of radiation, above that placed 
Day and 
hour of 
reading. 
meter in 
air at the 
height of 
4 feet. 
On long 
grass ex- 
posed to 
•|ths of sky. 
On short 
grass. 
On garden 
mould. 
One inch 
high. 
Three 
inches 
high. 
In focus of 
metallic 
reflector. 
Cloudless. 
d h 
O 
O 
o 
O 
3 21 
47-1 
4-3 
8-1 
3-8 
8-6 
8-9 
8-5 
16 21 
48-4 
4-9 
8-5 
3-4 
11-3 
10-5 
10*4 
21 21 
53-0 
9-0 
11-0 
8-0 
8-0 
12-0 
13-0 
22 21 
44-8 
4-8 
1M 
4-6 
10-8 
11-0 
10-2 
23 21 
50-4 
7*2 
6-6 
5-9 
12-9 
12-7 
12-4 
25 21 
45-3 
4-6 
11-1 
4*2 
11-6 
11-3 
8-0 
28 21 
43-5 
10-2 
11-7 
7-5 
10*5 
12-5 
9-3 
Principally clear. 
2 21 
51-3 
2-3 
2-3 
1-9 
3-0 
2*5 
3-3 
4 21 
42-9 
1*5 
4-1 
1*7 
5*4 
5-4 
5*6 
5 21 
43-4 
3-6 
8-1 
3-1 
9-9 
8-7 
7-4 
15 21 
51-6 
4-4 
5*1 
3-0 
9-6 
10-4 
11*2 
18 21 
50-5 
2-5 
5-5 
1-4 
7-5 
7-4 
5-4 
20 21 
44-1 
4-1 
8-5 
3-6 
10-8 
9-8 
10-9 
29 2,1 
52-1 
6-3 
7-9 
5-5 
12-0 
11-3 
9-5 
Half-cloudy. 
26 21 
47-0 
3-8 
7-3 
4-0 
10*8 
10-6 
8-0 
Principally cloudy. 
1 21 
53*5 
6-9 
11-5 
6-3 
6-5 
10-5 
4-4 
6 21 
45-2 
2-6 
3-6 
2-2 
6-2 
5-5 
6-0 
8 21 
51-2 
1*7 
2-2 
3-0 
3'2 
2*3 
2-7 
9 21 
49-1 
2-8 
3-5 
2-9 
3-6 
3-1 
4-3 
10 21 
47-8 
8-3 
5*8 
7-8 
5-8 
6-0 
6-3 
11 21 
48°8 
4-2 
5-3 
3-6 
5-0 
6-5 
6-7 
24 21 
49-8 
2-7 
1-2 
0-3 
1*1 
2-0 
2-3 
27 21 
50-2 
3-4 
1*9 
4-2 
6-0 
6-9 
7-2 
30 21 
52-3 
8-3 
8-3 
9-5 
9-5 
11*3 
10-1 
Cloudy. 
7 21 
49-9 
2-1 
M 
1-2 
3-9 
1-8 
1-4 
12 21 
48-8 
0-8 
2*2 
13 21 
51-8 
1-3 
-1*7 
1-8 
0-3 
1-6 
0-8 
14 21 
57-0 
4-5 
5-9 
3-6 
6-8 
7-1 
6-4 
17 21 
50-6 
0-6 
1-6 
-1-9 
3-0 
2-1 
2-0 
19 21 
50*3 
3-2 
0-6 
1*4 
3-2 
3-3 
