LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM 
181 
Observations of Declination. (Continued.) 
1841. 
Jan. 7 p.m, 
8 A.M 
8 P.M 
9 A.M 
10 P.M 
11 A.M. 
11 P.M. 
12 P.M. 
13 P.M. 
15 A.M 
Position. 
Initials. 
Declination 
observed. 
Lat. 
Long. 
O 
.-68 
32 
175 
49 
T. 
O 
-46 
02 
-68 
32 
175 
49 
T. 
-47 
05 
-68 
32 
175 
49 
W. 
-46 
07 
-68 
32 
175 
49 
Sm. 
— 24 
06 
-68 
32 
175 
49 
T. 
-46 
57 
-68 
32 
175 
49 
R 
— 25 
49 
-68 
32 
175 
49 
R. 
-47 
29 
-68 
32 
175 
55 
T. 
-30 
21 
-68 
30 
176 
35 
T. 
-20 
22 
-68 
30 
176 
35 
S. 
-20 
51 
-68 
30 
176 
35 
T. 
— 20 
22 
-68 
30 
176 
35 
Y. 
-19 
58 
-68 
28 
176 
32 
R. 
-34 
39-1 
-68 
55 
176 
24 
S. 
-29 
26 
-68 
55 
176 
24 
Y. 
-29 
38 
-68 
55 
176 
24 
O. 
— 28 
49 
-68 
55 
176 
18 
T. 
-29 
09 
-68 
55 
176 
18 
W. 
-29 
04 
-70 
31 
173 
17 
R. 
— 41 
12 
-70 
32 
172 
56 
R. 
-47 
04 
-70 
34 
172 
53 
R. 
-47 
35 
-70 
34 
172 
53 
S. 
-49 
34 
-70 
34 
172 
52 
R. 
-59 
05 
-70 
34 
172 
52 
R. 
-49 
12 
-70 
52 
172 
25 
T. 
— 44 
19 
-70 
52 
172 
25 
Y. 
-44 
35 
-70 
55 
172 
27 
Sm. 
-45 
31 
-71 
02 
172 
27 
T. 
-43 
11 
-71 
02 
172 
27 
Sm. 
-43 
48 
-71 
02 
172 
27 
T. 
-46 
48 
-71 
02 
172 
27 
S. 
-43 
43 
-71 
02 
172 
27 
0. 
-44 
36 
-71 
12 
172 
15 
R. 
-43 
29 
-71 
21 
170 
52 
R. 
-48 
45 
-71 
21 
170 
52 
T. 
-50 
10 
-71 
21 
170 
52 
W. 
-47 
35 
-71 
21 
170 
52 
Y. 
— 51 
03 
-71 
22 
170 
56 
T. 
-51 
09 
-71 
22 
170 
56 
S. 
-47 
45 
-71 
22 
170 
56 
0. 
-49 
33 
-71 
24 
170 
56 
T. 
— 51 
42 
-71 
24 
170 
56 
S. 
-59 
57 
-71 
19 
171 
06 
T. 
-28 
17 
-71 
52 
171 
11 
S. 
-27 
44 
-71 
52 
171 
11 
w. 
— 30 
36 
-72 
07 
172 
18 
s. 
-27 
40 
-71 
46 
171 
57 
0. 
-49 
22 
-71 
46 
171 
57 
s. 
— 48 
22 
-71 
46 
171 
55 
T. 
-51 
34 
-71 
46 
171 
55 
s. 
— 51 
24 
-71 
54 
172 
17 
T. 
— 24 
13 
-71 
54 
172 
17 
R. 
— 24 
51 
-71 
54 
172 
17 
T. 
— 25 
00 
-71 
54 
172 
17 
W. 
-23 
32 
-71 
55 
172 
17 
R. 
— 24 
15 
Direction of 
ship’s head. 
Inclination. 
for ship’s 
attraction. 
w. | N. 
+ 13 25 
w. by s. \ s. 
+ 13 20 
w. by s. 
+ 13 39 
S.E. i E. 
— 11 02 
w. by s. 
+ 13 39 
S.E. \ s. 
w. by s. \ s. 
> 
-83 35 < 
- 9 12 
+ 13 20 
s. by E. f e. 
— 5 30 
s.e. by e. f e. 
-12 44 
E. f N. 
— 13 25 
e. by s. f s. 
— 13 10 
e. by s. \ s. 
-13 20 
S.S.E. 
- 5 45 
S.S.E. 
— 5 45 
S.S.E. 
> 
-83 45 < 
— 5 45 
S.S.E. 
- 5 45 
S.S.E. 
— 5 45 
S. 
c 
0 00 
s. 27° w. 
+ 8 34 
s. 25° w. 
S.S.W. 4 w . 
> 
— 85 02*< 
+ 8 00 
+ 8 43 
w. 
+ 17 50 
s.w. 
+ 13 03 
s. 
r 
0 00 
s. 
0 00 
s. 
0 00 
s. 
0 00 
s. 
> 
— 85 50 <; 
0 00 
S. A W. 
+ 2 08 
s. 
0 0 
S. 4 W. 
+ 2 08 
s. J 
0 0 
s. by w. 
' 
+ 4 20 
s. by w. £ w. 
+ 6 28 
s. bv w. £ w. 
+ 6 28 
s. by w. ^ w. 
+ 6 28 
s. by w. ^ w. 
> 
-85 53 <; 
+ 6 28 
s. by w. 
+ 4 20 
s. by w. 4 w. 
+ 6 28 
s. by w. 4 w . 
+ 6 28 
s.w. 
+ 15 50 
n.e. by e. 
-17 36 
N.E. jN. " 
— 
-13 38 
N.E. N. 
-13 38 
E. by N. \ N. 
— 21 06 
s. by w. \ w. 
+ 6 40 
s. by w. ^ w. 
> 
-86 00 <J 
+ 6 40 
s. by w. \ w. 
+ 6 40 
S.S.W. 
+ 8 52 
e. by s. 
— 22 11 
e. by s. J 
-22 11 
e. by s. 
-22 11 
e. by s. | s. 
— 21 36 
As. 
> 
-86 00 <J 
-22 19 
Corrected 
Declination, 
-32 37 
-33 45 
-32 28 
-35 08 
-33 18 
35 01 
-34 09 
-35 51 
-33 06 
-34 16 
-33 32 
-33 18 
-35 11 
-35 23 
-34 34 
-34 54 
-34 49 
-41 12 
-38 30 
-39 35 
-40 51 
-41 12 
-36 09 
-44 19 
-44 35 
-45 31 
-43 11 
-43 28 
-44 40 
-43 43 
-42 28 
-43 29 J 
-44 25 
-43 42 
-41 07 
-44 35 
-44 41 
-43 25 
-43 05 
-45 14 
-44 07 
-45 53 
-41 22' 
-44 14 
-48 46 
-42 42 
-41 42 > 
-44 54 
-42 32 
-46 24 
-47 02 
-47 11 
-45 08 
-46 34 y 
Mean 
Declination. 
-33 52 
-34 39-1 
-34 58 
-39 35 
-43 56 
-44 01 
— 44 24 
a 
3 
O 
<u 
> 
Sh 
0 ) 
</> 
.£5 
Lo 
— 48 12 
at West = - 
\J/‘ at South = - 
sin 17° 53' 
- 59° 05' 
-41 12 
= tan 0 ; 
| Diff. 17° 53' = ship’s attraction at West: 
sin 17° 53' 
•0267 
2 b 2 
= M50 = tan 85° 02'. 
