177 
Observations made during a Voyage to India, 
llesidts of a Series of Experiments on the Temperature of the 
Sea, made by J. H. Pratt, M,A,, on board the ship Duke 
of Buccleugh, bound for Calcutta, 
The experiments were begun on the east of the Cape. 
Day. 
Lat. 
at noon. 
Long, 
at noon. 
Hour. 
Temperature. 
General Remarks. 
Sea. 
Air. 
1838. 
Nov. 17. 
o / 
37 37 S. 
20 40'e. 
11 p.m. 
6§*-25 
o 
66 
18. 
37 40 
24 14 
10| 
64-25 
64-25 
Clear sky. 
19. 
37 54 
28 30 
9 a.m. 
65 
68 
Clear. 
10| p.m. 
69-25 
64-50 
Cloudy. ■ 
20. 
37 46 
33 42 
8 a.m. 
63-75 
59 
Clear. 
3 p.m. 
64-75 
61 
11 
69-75 
62-50 
Clear (starlight). 
21. 
38 11 
37 51 
7 a.m. 
68-25 
64 
Clear. 
9 
68-25 
64-25 
Clear. 
noon. 
66-25 
64 
2 p.m. 
64-50 
64 50 
Clear. 
5 
62-50 
62-50 
Violent squall. 
7 
62-50 
57 
Immediately after 
heavy rain. 
- 
8| 
62 
58 
]) bet. squalls. 
10 
62 
58 
Cloudy. 
midnight. 
62 
56 
Starlight. 
22. 
37 55 
42 20 
5| a.m. 
67 
58 
Cloudy. 
n 
67-25 
58 
9 
67-25 
58 
m 
68 
59 
noon. 
67 
59 
Clear. 
2 p.m. 
654 
59 
5 
59-75 
61-50 
— "I Sea became 
7 
58 
59 
— 1 remarkably 
9 
55-25 
55-25 
— J green: pass- 
ing through 
comp, shal- 
low water. 
11 
62 
58 
Clear. 
23. 
37 46 
47 4 
4 a.m. 
65-25 
59 
Clear. 
7i 
64-50 
60 
9 
63-50 
59-25 
Cloudy. 
11 
63 
62 
Clear. 
noon. 
63-50 
61-75 
2| p.m. 
63-50 
64-50 
44 
63-50 
64-50 
7 
63-50 
64 
8| 
63 
63-50 
Cloudy. 
104: 
63 
63-50 
IH 
63 
62-50 
24. 
38 14 
51 50 
74 a.m. 
64-75 
64 
Cloudy. 
9 
63-25 
64-50 
104- 
63-25 
65 
124- p.m. 
63 
65-50 
Clear. 
Thil, Mag, S. 3. Vol. 16. No. 102. March 1840. N 
