180 
MR. GLAISHER ON THE RADIATION OF HEAT 
Table LXXXVI. 
General state of the 
1843. 
Dec. 
Reading 
of ther- 
mometer 
in air 
at the 
height of 
4 feet. 
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 
sky during the night 
previous to reading 
the instruments. 
Day and 
hour of 
reading. 
On long 
grass. 
On short 
grass. 
On 
coarse 
flax. 
On white 
raw 
wool. 
On 
black- 
ened tin. 
On white 
tin. 
In focus 
of me- 
tallic re- 
flector. 
Cloudless. 
d h 
None. 
O 
• 
o 
o 
O 
O 
O 
C 
Principally 
2 21 
36*5 
5-7 
4-3 
6-5 
6-7 
4-2 
1-7 
6-4 
cloudless. 
6 21 
40-2 
5-9 
6-2 
7-2 
7-2 
5-4 
4-2 
7-2 
8 21 
33-7 
4-9 
4-2 
7-2 
5-5 
4-7 
5*5 
10 21 
39-0 
10-2 
9-0 
10*2 
10-0 
9-2 
8-0 
7-2 
17 21 
38*5 
8-7 
9-5 
6-7 
7-0 
5-3 
5-7 
4-1 
Half-cloudy. 
5 21 
40*1 
7-1 
6-1 
7-3 
6-9 
5-9 
5-9 
7-9 
Principally 
1 21 
37-6 
8-6 
8-6 
8-3 
7-4 
8-6 
6-8 
10-4 
cloudy. 
7 21 
45-7 
6-2 
4-7 
5-7 
6-9 
4-2 
3-4 
3-8 
14 21 
39-3 
2-5 
4-3 
3-3 
3-5 
3-7 
2-3 
4-3 
15 21 
43-1 
6-3 
4-9 
6-3 
5-1 
4-9 
5-1 
24 21 
48-4 
7-7 
6-2 
6-0 
6-2 
4-4 
3-2 
5-4 
25 21 
42-7 
8-9 
8-3 
10-6 
10-7 
7-8 
6-0 
7-5 
27 21 
42-5 
2*9 
2-9 
2-7 
2-5 
2-5 
2-5 
3-5 
Cloudy. 
3 21 
45-3 
2-3 
3*3 
2-0 
2-1 
3-3 
4 21 
45-5 
1*9 
2*2 
1-5 
1-7 
2-1 
2-2 
2-8 
9 21 
35-1 
2-5 
-1*9 
1-1 
0-6 
0-8 
1-1 
2-6 
11 21 
30-4 
1*1 
1-4 
2-2 
0 3 
0-4 
0-2 
2*9 
12 21 
25-6 
3-8 
3-4 
5-3 
2-8 
4-6 
4-3 
2-8 
13 21 
39-3 
6-6 
7*8 
7-1 
8-3 
6*5 
5-3 
2-3 
16 21 
44-7 
7-5 
5-9 
5-9 
5*6 
3-2 
5-7 
18 21 
42-5 
2-5 
3-2 
3-1 
2*4 
2-5 
2-7 
3-7 
19 21 
42-3 
0-6 
0-0 
2-0 
M 
I ' 3 
2-3 
3-6 
20 21 
41-4 
3*9 
2-4 
2-2 
1-9 
1-9 
1*9 
3-2 
21 21 
41-9 
2*9 
2-7 
2*3 
2-2 
1-8 
2-1 
3-9 
22 21 
42-5 
0-5 
1*2 
0-9 
-0*3 
0-3 
0-9 
2-3 
23 21 
49-8 
5*6 
4-8 
5-0 
4-2 
4*0 
3-8 
4-5 
26 21 
42-5 
1-5 
2-5 
1-5 
0-9 
1-5 
1-9 
2*7 
28 21 
42*5 
1-8 
2-0 
1-6 
1-9 
1-2 
1-4 
2-3 
29 21 
38*5 
3-2 
3*2 
3-5 
3-3 
2-5 
2-6 
5-2 
30 21 
39-3 
2-1 
2-5 
2-8 
2*1 
2-1 
2-5 
3*7 
