134 
MR. GLAISHER ON THE RADIATION OF HEAT. 
Table (Continued). 
Excess of the reading of the thermometer in air above that placed 
23 
o 
£ 
1843. 
Astronomical day, 
hour and minute. 
Reading of Therm, a 
the height of 4 feet 
above the soil, protect 
from radiation. 
On long grass. 
rt 
fcb 
o 
Cl 
O 
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 
1 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. 
£ o 
— o 
tc p 
p 55 
£ o 
- S 
3 O 
C w 
O 
h 
m 
o 
o 
0 
„ 
0 
o 
o 
o 
o 
o 
o 
o 
o 
Sept 
.15. 
7 
20 
63-2 
9-9 
8-4 
7-7 
5-2 
1-2 
3-2 
2-2 
6-2 
3-2 
9-2 
15. 
11 
0 
58-8 
9-9 
8-8 
7-8 
6-8 
3-6 
5-3 
6-8 
7-0 
3-6 
10-8 
16. 
7 
40 
65 0 
9 1 
90 
7-3 

6*5 
0-3 
4-0 
3-4 
70 
4-2 
18. 
9 
30 
63-0 
9-5 
90 
7-5 
60 
30 
5-3 
7-2 
4-5 
10 0 
19. 
15 
10 
53-0 
9-3 
7-8 
110 
3-5 
7 5 
31 
8-7 
20. 
10 25 
55'5 
9-5 
9-0 
8-0 
3-0 
7-0 
4 0 
10-5 
20. 
15 
0 
52-6 
9-7 
8 3 
61 
51 
6-9 
4-6 
10-7 
21. 
6 
55 
627 
9-7 
9-2 
9-2 
i -7 
7-0 
4*5 
8-2 
21. 
7 
30 
61 *5 
95 
8-5 
7-3 
6*5 
7-8 
4-5 
105 
21. 
18 
20 
51-3 
9-0 
9-0 
8-0 
5-9 
7-5 
3-5 
10 0 
23. 
6 
0 
61-4 
9-7 
7-4 
7-4 
2-4 
, 
50 
6-4 
4-1 
1 14 
24. 
15 
10 
50'5 
90 
7-0 
79 
3-0 
5-5 
6-0 
41 
10-5 
28. 
11 
35 
45 3 
95 
6-3 
7-3 
2-8 
3-9 
4-8 
3-4 
100 
28. 
13 
25 
43 5 
9-6 
80 
113 
3-0 
7-7 
5-5 
3-8 
12 5 
Oct 
15. 
4 
50 
41-0 
9-2 
71 
ii -7 
12 8 
7-6 
2-7 
5-0 
30 
11-8 
15. 
5 
5 
40 5 
9-8 
7-8 
11-7 
132 
91 
3-2 
6-2 
3 1 
123 
18. 
5 
20 
422 
9 8 
6-9 
12-9 
7-9 
2-8 
5-2 
4-0 
3-9 
5-2 
30 
2-1 
9-4 
18. 
8 
3 (J 
357 
9-7 
8-9 
11-6 
8-2 
8-7 
3-4 
5-7 
4-5 
4-7 
6*5 
4-5 
3-5 
11-7 
19. 
7 
40 
35-6 
9-6 
7-8 
12-4 
12-1 
8-6 
3-9 
-6 9 
- i-i 
5-4 
2-4 
3-8 
6-6 
2-6 
1-8 
10-5 
19. 
10 
0 
33-2 
9-0 
8-7 
11-7 
14 7 
7*4 
4-0 
-6-8 
-2-3 
2-7 
1-7 
2-7 
6-2 
23 
1-8 
10-4 
19. 
12 
0 
310 
9-5 
8-5 
130 
12-8 
7-8 
3-8 
1-8 
0-8 
30 
8-0 
1-9 
0-8 
11-5 
21. 
9 
20 
42- 1 
99 
7-8 
12-9 
1 13 
7-1 
3-5 
-1-1 
- i -3 
4-7 
2-9 
4-9 
7*5 
3-3 
2-9 
9-9 
25. 
13 
0 
35 5 
9-3 
8-0 
121 112 5 
7-9 
4-7 
-7-5 
-0-5 
4-5 
1-9 
30 
(ro 
1-9 
M 
9-5 
26. 
7 
35 
40-5 
9-3 
2-8 
10 1 
8-9 
6-5 
3-1 
-3-5 
-1-0 
30 
12 
3-5 
5-5 
13 
0-7 
8-0 
Nov 
8. 
12 
0 
35 - 5 
9-5 
83 
12 0 
11-8 
9-3 
4-3 
-4-5 
1-5 
4-0 
4-0 
40 
65 
3-5 
2-7 
120 
8. 
13 
0 
35-1 
9-1 
7-9 
31-6 
116 
9-1 
4-1 
-41 
1-1 
4-1 
4-1 
3-6 
5-6 
3-0 
2-3 
11-6 
8. 
17 
O 
33-5 
90 
8-0 
11-2 
9-5 
8-5 
3-5 
— 4*5 
1-0 
4-0 
3-0 
4-5 
60 
2-7 
2 2 
11-2 
9. 
5 
30 
35'0 
95 
9-5 
13-5 
13 0 
115 
3 5 
-6 0 
-1-5 
2-5 
3-2 
30 
3-2 
2-9 
13-0 
10. 
19 
30 
tio'O 
9-3 
75 
10-5 
10-5 
9-3 
2-5 
-4-3 
-0-7 
20 
12 
2-0 
2-5 
1 5 
10-5 
11. 
7 
30 
38-8 
9-8 
8-7 
13-8 
13-2 
9-5 
3*3 
-16 
1-8 
6-0 
4-2 
4-8 
3-8 
2-6 
13-7 
11. 
10 
35 
37-0 
9-2 
95 
10-8 
10-5 
8-8 
3-8 
-1-0 
3-0 
5*0 
4-0 
4-0 
3-8 
2-8 
10-0 
12. 
13 
5 
31-7 
9-5 
7-2 
110 
10-8 
6-0 
5-5 
-6-2 
0-0 
1-0 
1-0 
7-2 
Sept 
.15. 
10 
33 
59-5 
10-0 
7-9 
8-0 
5-5 
2-3 
50 
6-5 
3-5 
12-0 
18. 
9 
0 
640 
10-0 
90 
7-0 
8-0 
3-0 
8-0 
7-0 
5*5 
10 0 
19. 
10 
0 
59-2 
10-7 
9-5 
92 
4 2 
9-2 
4-7 
11-2 
19. 
11 
10 
55'5 
10 5 
10-3 
10-3 
25 
90 
5-3 
111 
19. 
13 
10 
537 
10 7 
7-7 
117 
3-7 
7-1 
4-4 
67 
20. 
9 
25 
57-7 
10-2 
9-2 
9-2 
4-2 
3-7 
77 
4-2 
10-6 
21. 
6 
10 
636 
10 1 
74 
4-5 
53 
4-3 
9-9 
22. 
5 
40 
62-6 
101 
9-2 
7-2 
41 
5-9 
3-8 
12-3 
22. 
7 
20 
58-3 
10-6 
10-5 
9 3 
0-6 
8-1 
4-5 
12-7 
22. 
8 
10 
562 
105 
103 
7-4 
50 
7-2 
4-3 
112 
22. 
11 
30 
52-0 
10-9 
12-0 
9*5 
3 6 
7-8 
4-8 
1 1-5 
22. 
13 
30 
50-7 
10 0 
8-5 
8-7 
3-6 
22 
7-7 
35 
9-9 
23. 
8 
30 
565 
10 5 
9-3 
7-5 
30 
65 
8-5 
41 
115 
23. 
10 
50 
528 
10-8 
8-3 
7-8 
2-8 
71 
8-8 
4-8 
12-3 
23. 
1 1 
10 
522 
10-7 
91 
7-2 
2-7 
7-5 
8-6 
4-6 
122 
X 
26. 
11 
SO 
41-4 
101 
10-0 
91 
3-9 
... 
3-9 
8-6 
4-2 
114 
27. 
9 
10 
415 
10-7 
93 
10 5 
5-2 
9-5 
5-8 
5 5 
11-5 
27. 
11 
0 
41-5 
10 0 
77 
8-0 
4-3 
6 7 
70 
4-3 
11-5 
Oct. 
2 
7 
25 
570 
10-5 
9-5 
8-5 
4-8 
2-5 
9-0 
4-5 
11-8 
15. 
15 
20 
29-8 
10 0 
9-4 
10-8 
5-3 
9-4 
3-6 
18. 
7 
40 
380 
10 0 
8-0 
13 3 
7-6 
2-4 
4-6 
40 
4-3 
6-5 
2-8 
i -7 
10-0 
18. 
9 
30 
36-8 
10-8 
8-8 
12-8 
10-8 
9-8 
3-8 
6-8 
6-1 
5-9 
7-8 
4-8 
3-4 
13-8 
18. 
14 
30, 
306 
10 8 
9-8 
14 6 ; 
14-7 
109 
51 
4-4 
3-6 
5-1 
8-1 
41 
3-3 
12-8 
18. 
18 
0 
300 
10-4 
8-9 
12 0 
12-0 
12-8 
5-2 
4-8 
29 
5-8 
8-9 
4-5 
40 
13-2 
J 9. 
4 
soj 
43-5 
10-3 
7-0 
13-5 
11-6 
70 
21 
7-9 
0-7 
2-8 
50 
23 
1-6 
11-5 
19. 
8 
10! 
35-9 
10 7 
10-7 
15-9 S 
15-9 
11-4 
4-9 
-61 
0-9 
5-1 
3-7 
61 
9-1 
3-9 
3-2 
13-7 
21. 
7 
30 
44-0 
100 
7-8 
12-5 1 
12-5 
7-5 
3-5 
-4-0 
-0-5 
4-5 
2-8 
40 
60 
2-0 
25 
10-2 
25. 
9 
30 
38-2 
10-4 
8-2 
13-2 
13 2 
7-2 
4-2 
-6-8 
-0-2 
3-7 
1-0 
0-7 
7-7 
12 
0-7 
13-0 
11-7 
25. 
11 
40 
36-6 
10 4 
8-4 
1 2 6 
12 8 
8-4 
3-6 
-5-7 
0-9 
5-1 
26 
3-6 
7-5 
1-8 
1-4 
10-8 
11-9 
Nov. 
7. 
5 
30 
51-7 
10-5 
9-7 
13-7 
11-4 
9-7 
4-2 
2-6 
5-7 
41 
4-1 
5-4 
76 
4-5 
1-7 
11-7 
' 
12. 
19 
20 
330 
10-0 
7-9 
10-4 
1 
11-0 
7-4 
5-8 
-6-2 
1-2 
... 
... 
2-7 
2-3 
9-0 
... 
Sept. 15, ll h 0 m ; a thin cloud passing zenith. Sept. 18, 9 h 30 m ; the stars seem small. Sept. 19, 15 h 10 m ; the stars seem small, and they have 
appearance. Sept. 20, 15 h 0 m ; deposition of moisture. Sept. 21, 6 h 55 m ; the clouds are confined to the zenith and around it. Sept. 21, 7 h 30 m ; 
arc confined to the zenith and around it. Sept. 21, 18 h 20"' ; deposition of moisture. Sept. 24, 15 h 10 m ; the stars are dim and small. Sept. 28, ll b 
clouds near S. horizon, and the stars are dim. Sept. 28, 13 h 25 m ; stars seem small and shine dimly. Oct. 19, 7 h 40 m ; dew just forming. Sept, 
a few clouds. Sept. 19, ll h 10 m ; stars seem small and watery. Sept. 19, 13 h 10"'; stars seem small and watery. Sept. 23, 10 h 50 m ; the south poi 
very clear. Sept. 23, 1 l h 10"' ; the stars have become dim. Oct. 2, 7 h 25 m ; dew being deposited. Oct. 19, 8 h 10 m ; dew. Oct. 21, 7 h 30 m ; dew. 
Oct. 19, 7 h 40 m . At 7 h O'" a parcel of 10 grains of wool was placed on grass, and at this time it was found to weigh 11 grains. The temperature c 
7 h 40"’ was 3° less than it was 7 h O'", and yet the differences between the readings of the several thermometers and that in air, is less by 2° or 3° that 
