LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM. 
101 
Observations of the Inclination with Needles whose Poles were reversed, made on 
the ice. 
Date. 
Lat. 
Long. 
Needle. 
Poles. 
a. direct. 
fi reversed. 
Mean. 
Remarks. 
1841. 
December 19' 
23, 
23, 
1842. 
January 16. 
1 6 . 
16 
-63 23 
-65 59 
-65 59 
-65 49 
-65 49 
-65 49 
210 02 
204 14 
204 14 
202 02 
202 02 
202 02 
R 4 
R 4 
R 6 
R 4 
R 6 
R 7 
a — 77 23 
(3 — 77 23 
'•I} 
3*0 1 
1-7/ 
a -79 32- 
ft -79 24- 
a — 79 35-61 
fi—79 31-5 / 
a— 79 40-51 
p — 79 34-4/ 
a — 79 
(3-79 
a— 79 
(3-79 
36-2 
42-! 
41- 
41- 
5-2 1 
2*9 i 
1-81 
1 - 0 / 
-77 23-3 -77 23-3 
-79 28-4 
-79 33-6 
-79 37-4' 
-79 39-6 
-79 41-4 
-79 31-0 
> -79 39-5 
Needles belonging to 
H.M.S. Erebus. 
Observations of the Inclination, with Needles whose Poles were reversed, made at the 
Magnetic Observatory at Port Louis, in the Falkland Islands, April to August 1842 . 
Date. 
Hour. 
Needle. 
Poles. 
a direct. 
/3 reversed. 
Mean. 
Remarks. 
1842. 
April 12. 
12 . 
12 . 
15. 
15. 
19. 
19- 
22 . 
22 . 
26. 
26 
29 
May 3. 
3. 
6 
6 . 
h m 
1 30 p.m. 
3 30 p.m. 
3 30 p.m. 
8 20 a.m. 
3 10 p.m. 
8 00 A.M. 
3 30 p.m. 
8 00 A.M. 
3 30 p.m. 
8 00 a.m. 
3 30 p.m. 
8 00 A.M. 
8 00 A.M. 
3 30 p.m. 
8 00 A.M. 
3 30 p.m. 
R 4 
R 6 
R 7 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
R 4 
a —52 
(3 -52 
a — 52 
ft —52 
a — 52 
ft —52 
a —52 
ft —52 
a -52 
ft -52 
a. — 52 
ft -52 
a —52 
ft —52 
a -52 
ft -52 
a -52 
ft -52 
a — 52 
ft -52 
a — 52 
ft —52 
a -52 
ft -52 
a —52 
ft -52 
cc —52 
ft -52 
a -52 
ft -52 
a -52 
ft -52 
33-5 
16-7 
26-0 
32-0 
30-8 
309 
36-8 
16- 3 
39-9 
12-4 
36-9 
17- B 
35- 8 
16-2 
36- 3 
16-8 
36-8 
15- 3 
35- 9 
10-3 
36- 0 
08-7 
38-3 
18- 8 
35- 8 
06-4 
36- 8 
16 - 9 
36- 3 
17*1 
37- 3 
14-9 
}- 
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} 
} 
}- 
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}- 
}- 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
52 
25- 1 
29-0 
30-8 
26 - 6 
26-2 
27- 3 
26-3 
26-5 
26-1 
23-1 
22-3 
28- 6 
21*1 
26-8 
26-7 
26-1 
^Needles belonging to H.M.S. Erebus. 
