MR. J. PRESTWICH ON SUBMARINE TEMPERATURES. 
627 
approaches the equatorial regions, reaches to within 390 feet of the surface in lat. 12° 
to 15° N * 
* Although Kotzebue’s observations in the Pacific did not furnish him with the same number of data, he 
thought there was yet evidence of the same condition prevailing there also ; but the observations were much 
scattered over many parallels of longitude and were made in various currents. The results were : — 
Latitude. 
6 to 9 N. . . 
Mean depth, 
feet. 
600 
Mean temperature. 
°F. 
. . . . 56 
9 „ 12 
499 
. . . • 62 
12 „ 15 
558 
61-3 
15 „ 18 
498 
. . . . 69‘5 
18 „ 21 
402 
. . . . 69-3 
27 „ 30 
450 
64 
30 „ 33 
600 
62 
33 „ 36 
600 
51-8 
36 ..39 
600 
52-7 
Dr. Horxer had previously noticed, in 
the Atlantic, this anomaly of s 
a. proportionally lower tempers 
depths near the equator than 5° S. and 10° N. of it, but without offering 
any explanation, and gave a : 
means of some of Krusextern’s observations, of which the following is an extract : — 
April 20 
No. of Obs. Lat. 
to 26 5 17 15 S. 
Long. Depth, 
o / feet. 
3 20 W. 342 
Temp. 
°F. 
55-4 
27 
„ 30 4 
10 24 
12 2 
396 
56-2 
30 
„ 4 M 5 
5 12 
17 5 
402 
53-3 
May 3 
„ 10 8 
0 43 N. 
20 28 
444 
52 -5 
10 
„ 16 7 
4 51 
24 38 
450 
5 2-5 
15 
„ 19 5 
9 34 
29 38 
402 
52-7 
20 
„ 24 5 
19 30 
35 7 
426 
61-0 
25 
„ 30 6 
31 0 
36 30 
426 
58-7 
31 
„ 6 J 5 
40 30 
29 40 
408 
54-2 
4 P 
Edinb. Phil. Journ. 1822, vol. vi. p. 161. 
MDCCCLXXV. 
