446 DR. DAVY ON THE TEMPERATURE OF MAN WITHIN THE TROPICS. 
11 . Of the Teynperatiire at Sea, when not under the influence of Sea-sickness. 
In returning from the West Indies in the well-appointed steam- packet Clyde, I 
availed myself of the opportunity to continue the observations on temperature. The 
results are given in the following Table, commencing on the day after leaving St. 
Thomas, when all feeling of sea-sickness had ceased, and ending on the 2nd of De- 
cember, the day before coming in sight of the coast of England. The weather during 
the greater part of the voyage was favourable : after leaving Fayal, on the 27th of 
November, it was more or less tempestuous ; on the 29th and 30th, it was necessary 
to have the cabin ports closed. The observations were made in a well-ventilated 
cabin in the sitting posture, — the port commonly open excepting at night. The diet 
was fuller and more nourishing than that used in the West Indies, the appetite in- 
creasing on passing into a cooler climate; rather more wine was used, viz. a pint of 
sound Bordeaux at dinner ; and the clothing was rendered warmer as required by 
diminution of warmth of atmosphere : — 
Position of ship 
at noon. 
Temperature under 
the tongue. 
Pulse. 
Respirations. 
Temperature of cabin. 
Lat. N. 
Lonj 
r.W. 
6-7 A.M. 
12-2 
10 
6-7 A.M. 
12-2 
10 
6-7 A.M. 
12-2 
10 
6-7 A.M. 
12-2 
10 
P.M. 
P.M. 
P.M. 
P.M. 
P.M. 
P.M. 
P.M. 
P.M. 
Nov. 
16. 
22 
39 
61 
8 
98-5 
98-8 
98-9 
54 
60 
60 
14 
15 
16 
78 
81 
78 
17. 
24 
16 
58 
11 
98-2 
98-3 
98-4 
56 
54 
66 
14 
16 
15 
76 
77 
77 
18. 
25 
39 
55 
30 
98-2 
98-7 
98-2 
56 
52 
60 
14 
16 
15 
75 
77 
77 
19. 
27 
33 
53 
13 
98-6 
99-3 
52 
72 
14 
15 
77 
79 
20. 
29 
19 
50 
45 
98-6 
98-1 
977 
60 
56 
60 
14 
15 
15 
77 
77 
77 
21. 
31 
6 
48 
9 
98-5 
97-9 
97-8 
56 
50 
62 
14 
15 
15 
75 
75 
73 
22. 
32 
53 
45 
16 
98-7 
97-7 
977 
54 
54 
60 
14 
14 
15 
71 
73 
72 
23. 
34 
43 
41 
18 
98-2 
98 
98-1 
54 
56 
58 
15 
15 
15 
71 
71 
72 
24. 
36 
23 
37 
21 
98-5 
98-1 
98-6 
58 
54 
60 
14 
15 
15 
69 
67 
67 
25. 
37 
21 
33 
34 
98-3 
98-5 
52 
56 
14 
14 
64 
66 
26. 
38 
28 
30 
2 
98-5 
98-7 
56 
56 
14 
14 
66 
69 
27. 
38 
32 
28 
40 
98-3 
98-5 
97*5 
54 
54 
54 
14 
15 
15 
68 
67 
66 
28. 
41 
2 
25 
18 
98-4 
98-7 
98-3 
52 
58 
60 
14 
16 
15 
66 
61 
65 
29. 
43 
19 
21 
32 
98-6 
99-4 
98 
56 
62 
58 
14 
15 
15 
65 
63 
68 
30. 
44 
59 
17 
13 
98-1 
98-9 
97*3 
54 
56 
54 
14 
15 
14 
61 
59 
64 
Dec. 
1. 
46 
33 
12 
7 
98-4 
98-9 
97-9 
54 
60 
56 
14 
14 
14 
59 
59 
63 
2. 
48 
33 
6 
44 
98-7 
98 
97*6 
58 
62 
48 
14 
15 
58 
57 
59 
Comparing these results with those obtained in England and in the West Indies, 
they will be found to accord more with the former than the latter, the morning being 
on an average higher than those obtained at night. The small range of temperature 
is also worthy of note, and its decrease with diminution of atmospheric temperature. 
In those instances in which the variation was greatest, the higher temperature noted 
down, was in the middle of the day, commonly in connection with active walking 
exercise just before taken, — and the lower than ordinary at the same period of the 
day, was, after sitting for an hour or two exposed to the wind on deck. 
