136 
MR. GLAISHER ON THE RADIATION OF HEAT 
Table (Continued). 
Excess of the reading of the thermometer in air above that placed 
Number of the Table 
1843. 
Astronomical day, 
hour and minute. 
Reading of Therm, a 
the height of 4 feet 
above the soil, protect 
from radiation. 
On long grass. 
On short grass. 
On raw wool 
on grass. 
On flax on grass. 
In focus of reflector. 
Nine inches above 
wood. 
One inch below 
surface of ground 
under short grass. 
On surface of 
ground under 
short grass. 
On surface of 
ground under 
long grass. 
On garden mould. 
On gravel. 
On river sand. 
On river sand on the 
raised board. 
One inch high above 
grass. 
Two inches high 
above grass. 
Three inches high 
above grass. 
Six inches high 
above grass. 
Twelve inches high 
above grass. 
On unwrought white 
cotton wool on 
grass. 
On un wrought white 
XIII. 
Sept. 13. 
19. 
19. 
19. 
26. 
27. 
27. 
27. 
28. 
Oct. 18. 
18. 
18. 
19. 
25. 
26. 
‘ 29. 
Nov. 1. 
1. 
4. 
12. 
h 
15 
7 
9 
9 
9 
6 
7 
13 
17 
10 
1 1 
11 
9 
8 
5 
9 
4 
7 
5 
6 
m 
15 
20 
20 
40 
10 
40 
30 
0 
25 
20 
0 
30 
0 
0 
40 
0 
30 
0 
10 
0 
498 
62-4 
587 
59-3 
47-2 
44-5 
440 
40-3 
38- 1 
36- 8 
35-5 
35-0 
34-5 
39- 8 
42- 5 
40- 6 
43- 0 
40-0 
470 
37- 5 
11-3 
11-4 
11*2 
11-3 
11-7 
11-7 
11-7 
111 
11-7 
1 18 
11-5 
I I -5 
110 
11-7 
11-5 
114 
III 
110 
1 1-8 
110 
10-3 
10-4 
9-2 
9-8 
10- 7 
8-3 
8- 7 
91 
101 
9- 5 
9-5 
9-7 
110 
10-0 
8-5 
7- 9 
90 
6-5 
8- 5 
11- 5 
o 
15-3 
150 
150 
15 3 
15-3 
12-6 
13- 8 
14- 5 
15- 0 
14 5 
13-7 
o 
15-3 
14- 5 
150 
15- 3 
14- 8 
11-8 
131 
13-5 
15- 0 
140 
13-5 
11-8 
9-2 
9-3 
10 7 
10-5 
10-1 
8-8 
101 
10-8 
9-5 
10-2 
100 
9-8 
8-8 
7- 1 
8- 5 
6-0 
8-0 
9- 5 
o 
6-2 
5-3 
5-0 
3- 8 
4- 6 
4-3 
4-3 
4- 5 
5- 5 
4-3 
3-9 
2-6 
5 0 
3-2 
3- 8 
4- 0 
O 
—5 5 
-57 
-3-5 
-2-4 
-5-0 
-5-0 
-30 
-2-5 
-0-5 
-1-4 
-1-5 
-0-4 
00 
-10 
1- 5 
2- 5 
O 
o 
74 
6-7 
73 
6-3 
5"5 
50 
3- 7 
4- 3 
5 0 
31 
2-0 
5- 0 
5-0 
2-8 
6-3 
32 
4-3 
2-7 
4- 8 
6-3 
5- 5 
5-0 
30 
2- 3 
1-5 
26 
10 
3- 0 
00 
8-8 
6-4 
5- 7 
6- 3 
5- 7 
3- 7 
73 
6- 3 
5-5 
5 0 
4- 5 
2’8 
3-2 
2-9 
1-0 
30 
2 8 
o 
8-3 
10-3 
8-2 
8- 7 
9- 3 
7-2 
9-3 
7- 8 
81 
8- 1 
8-8 
8-5 
8-5 
8-5 
8-8 
7-0 
7- 5 
8 - 5 
30 
7-5 
5-3 
o 
60 
3- 7 
4- 8 
5- 7 
5-4 
7-8 
4-3 
52 
4-8 
4-5 
4-7 
3- 5 
1-8 
2-3 
1- 4 
2- 5 
4- 0 
2-2 
2-3 
o 
3-8 
3-7 
3-8 
2-8 
1-3 
1- 9 
1-6 
2- 0 
3-5 
1-8 
1-5 
12-3 
11- 7 
10- 5 
12- 3 
13- 7 
12- 7 
13- 0 
13-3 
12-6 
13-8 
130 
13-8 
12-0 
11- 6 
10- 7 
11- 8 
13- 0 
14- 0 
12-8 
11-4 
i 
Sept. 21. 
8 
30 
410 
122 
95 
7-0 
4-8 
8-0 
4-5 
14-8 
Oct. 16. 
5 
20 
38-4 
12-4 
9-4 
12 6 
14-8 
10-2 
3-7 
7-4 
2-9 
7-9 
18. 
12 
0 
34-5 
127 
10-0 
167 
160 
10-5 
5-5 
5-3 
4-7 
57 
90 
5-2 
4-2 
14-5 
19. 
5 
0 
41-8 
12-8 
9-9 
16-0 
14-3 
11-3 
3-3 
4-3 
1-3 
40 
8-0 
2-6 
2-0 
130 
19. 
5 
30 
40-4 
12-9 
10-5 
16-4 
15-6 
105 
3-9 
41 
1-8 
36 
8-2 
2-4 
1-7 
13-8 
> 
Nov. 8. 
19 
0 
31-3 
12-3 
9-3 
16 3 
13-3 
11-3 
5-8 
-6-7 
0-7 
3-3 
2-3 
4-8 
73 
4-3 
3-8 
15-3 
P 
12 . 
8 45 
33-6 
12-4 
12. 
9 20 
330 
120 
12 0 
17-0 
15 5 
9-5 
6-0 
-50 
40 
2-5 
2-2 
12 0 
12. 
10 
10 
32-3 
12-5 
121 
17-3 
151 
10-3 
6-3 
-5-2 
1-2 
14-8 
13. 
5 
10 
37-5 
12-5 
117 
195 
14-5 
120 
60 
-1-8 
17 
140 
13. 
5 
30 
37-6 
12-6 
13. 
7 
0 
360 
12-5 
lio 
11-4 
120 
lio 
5-4 
-2-0 
2 5 
... 
9-0 
Sept. 13. 
11 
10 
510 
13-5 
120 
120 
4-0 
13. 
12 
0 
50-5 
13-5 
12-5 
12-5 
3-5 
7-5 
7*5 
120 
7-5 
s 
13. 
14 30 
500 
13-0 
120 
11-5 
30 
8-5 
7-5 
10-5 
5-2 
11-5 
1C 
28. 
15 
15 
40-2 
13-2 
10-3 
1 1-2 
5-2 
60 
10-2 
6-7 
13-9 
> 
Oct. 18. 
13 
0 
33-4 
13-2 
10-4 
15-9 
15-9 
104 
41 
3-4 
5-2 
8-6 
4-0 
3-i 
14-1 
18. 
16 
0 
300 
132 
9-7 
140 
13-2 
8-2 
4-5 
40 
3-5 
3-8 
8-9 
6-0 
5-0 
12-8 
19. 
5 
50 
40-3 
13-9 
121 
16 3 
16-3 
1 1-6 
4-5 
6-7 
3-2 
63 
9-9 
4-7 
3-7 
15-0 
25. 
5 
15 
45-5 
130 
10-3 
16-5 
161 
11-5 
10-5 
-4-5 
00 
2-3 
01 
21 
9-3 
5-3 
4-7 
13-4 
14 
Nov. 12. 
8 30 
33-6 
131 
12-4 
16 8 
161 
10-6 
5-6 
-4-9 
0-6 
3-3 
2-5 
151 
Sept. 13. 
12 
30 
50-8 
14-6 
13-3 
13-3 
3-8 
7-8 
8-3 
12-3 
6-8 
11 
> 
13. 
13 30 
50-7 
14-2 
12-7 
13-2 
3-7 
9-2 
8-9 
11-7 
5-7 
117 
11 
X 
Oct. 19. 
6 
15 
40-3 
14T 
11-5 
16-3 
16-8 
12-8 
6-2 
7-5 
48 
71 
10-3 
4-5 
3-8 
15-3 
Sept. 13, 15 h 15 m ; the sky is cloudy to 30° high. Sept. 19, 9 h 20 m ; clouds all round to 10° high. Sept. 19, 9 h 40™ ; a few clouds to the north. 
5 b 10™ ; dark clouds. Sept. 13, ll h 10™ ; great deposition of moisture. Sept. 13, 12 h 0™ ; great deposition of moisture. Sept. 13, 14 h 30™ ; great dej 
moisture. Sept. 28, 15 h 15™ ; the stars small and dim. Sept. 13, 12 h 30™ ; great deposition of moisture. Sept. 13, 13 h 30™ ; great deposition of mois 
Sept. 27, 13 h 0™. Dew had been deposited previous to this observation : the thermometer placed on long grass was covered with hoar-frost, so much 
stem had to be scraped before the reading could be taken : that placed on raw wool was similarly circumstanced, and it was firmly frozen to the wool. 
Oct. 18, 12 h 0™. The charcoal is white with hoar-frost : wool and flax are each a mass of ice, and the thermometers are firmly frozen to them. The 
of ice in the evaporator was 0’82 inch. 
