204 
LI E UT. -COLON E L SABINE ON TERRESTRIAL MAGNETISM 
Observations of the Intensity of the Magnetic Force made in Her Majesty’s Ship 
Terror, with Needle F. C. B., between April 16, 1841, and August 15, 1842. 
Observers Captain Francis Rawdon Crozier, and Mr. Thomas Moore, Mate, R.N. 
Method 
employed. 
An 
trie of 
cJ 
>> 
1841. 
Lat. 
Long. 
deflection. 
Face east. 
P-> ?-C 
S S3 
S ** 
H 
Ship’s head. 
<V 
Apr. 17* 
o / 
Hobart 
o / 
on Mag- 
Def. S. 
O 
33 
20-4 
O 
60 
netic Observatory. 
Mag. N.S. 
39 
59-2 
60 
-42 52 
147 24 
Mag. N. 
30 
04-0 
60 
Del'. S. 
21 
03-1 
60 
19. 
wt. 1 gr * 
12 
11-9 
60 
wt. 1|- gr. 
18 
29-4 
60 
wt. 2 grs. 
wt. 24 grs. 
25 
31 
13-7 
43-0 
60 
60 
Observed 
> on shore. 
1-820 
wt. 3 grs. 
39 
02-3 
60 
wt. 34 grs. 
46 
51-3 
60 
20. 
Def. N. 
36 
00-6 
60 
Def. S. 
33 
25-6 
60 
Mag. N.S. 
40 
116 
60 
Mag. N. 
30 
24-1 
60 
June 22. 
At anchor in the 
r 
Def. N. 
35 
58-5 
48 
w. 
1-821 
river Derwent. 
Def. N. 
35 
49-1 
48 
w.s.w. 
1-831 
Def. N. 
35 
34-5 
48 
s.w. 
1-844 
<U 
Def. N. 
35 
09-6 
48 
s.s.w. 
1-868 
Def. N. 
35 
09-3 
48 
s. 
1-868 
<2 d 
Def. N. 
34 
58-0 
48 
S.S.E. 
1-879 
co 
Def. N. 
35 
00-0 
48 
S-E. 
1-877 
— 
.2 S 
g j 
o 5 
Def. N. 
34 
59-9 
48 
E.S.E. 
1-877 
Def. N. 
35 
06-4 
48 
E. 
1-871 
s- c$ 
J- 
Def. N. 
35 
13-9 
48 
E.N.E. 
1-863 
" 'Ch 
Def. N. 
35 
18-4 
48 
N.E. 
1-859 
Def. N. 
35 
21-6 
48 
N.N.E. 
1-857 
Def. N. 
35 
23-0 
48 
N. 
1-855 
O 
Def. N. 
35 
23-7 
48 
N.N.W. 
1-854 
O 
Def. N. 
36 
04-1 
48 
N.W. 
1-816 
Def. N. 
35 
21-4 
48 
W.N.W. 
1-857 
July 7- 
Storm Bay. 
Def. N. 
34 
57-0 
48 
S.E. E. 
1-880 
Def. S. 
32 
40-0 
48 
S.E. f- E. 
1-864 
8. 
-43 03 
148 20 
Def. N. 
35 
23-6 
52 
W. \ N. 
1-854 
Def. S. 
33 
11-5 
52 
W. \ N. 
1-832 
9. 
— 42 24 
149 30 
Def. N. 
36 
03-7 
56 
N.N.W. 
1-816 
Def. S. 
33 
57-6 
56 
N.N.W. 
1-785 
10. 
-40 51 
149 28 
Def. N. 
36 
33-8 
56 
N, by w. 
1-787 
Def. S. 
33 
51-3 
56 
n. by w. 
1-792 
11. 
— 38 17 
150 22 
Def. N. 
36 
46-1 
56 
n. by e. 
1-775 
Def. S. 
34 
43-3 
56 
n. by e. 
1-741 
12. 
-37 28 
151 30 
Def. N. 
37 
09-4 
61 
N.E. -g- N. 
1-752 
Def. S. 
35 
06-4 
61 
N.E- y N. 
1-718 
13. 
-36 21 
151 39 
Def. N. 
37 
15-1 
58 
N.N.W. -g- W. 
1-747 
14. 
— 34 06 
151 19 
Def. N. 
38 
06 6 
60 
N. 
1-697 
Def. S. 
35 
42-8 
60 
N. 
1-681 
19- 
Garden Island, 
Def. N. 
38 
05-9 
60 
1 
Observed 
1-697 
Port Jackson. 
-33 51 151 17 
Def. S. 
35 
15-7 
60 
J 
on shore. 
1-708 
Correction 
for ship’s 
attraction. 
| — -012 
J + -006 
| +'022 
j + -025 
| +*027 
j + -023 
+ •026 
} +-031 
Corrected 
Intensity. 
Remarks. 
1-820 
1-860 
1-849 
1-822 
1-814 
1-785 
1-758 
1-738 
-wt. 1 
gr. 
11 
42-0 
wt. 1| 
gr. 
17 
52-6 
Observed on shore ; 
face west. 
wt. 2 
grs. 
24 
15-6 
wt. 2\ 
grs. 
31 
00-7 
wt. 3 
grs. 
38 
42-3 
-wt. 3J 
grs. 
46 
06-3 
^■Intensity 1-820 
A spare needle 
marked C. was 
used as a deflector, 
and the observa- 
tions with it are 
those registered as 
“ Deflector S.” 
and “Deflector 
N.” The deflect- 
ing magnets be- 
longing to the ap- 
paratus were also 
employed, N alone, 
and N. and S. con- 
jointly. The obser- 
vations with these 
are distinguished 
as “ Mag. N.” 
and “Mag. N.S.” 
The temperatures 
are taken from the 
register in the 
Erebus. 
Very steady. 
Very steady. 
Very steady. 
Very steady. 
Very steady. 
Slight motion. 
Steering very steady. 
Heavy cross sea, 
unsteady. 
A slight motion. 
Steering steady. 
