LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM. 
127 
Declinations observed on board Her Majesty’s Ship Erebus, between June 1841 
and August 1842. 
The Observers are distinguished in the column of Initials as follows : — R. Captain Ross ; S. Lieut. Sibbald ; 
W. Lieut. Wood ; T. Mr. Tucker, Master ; Sm. Mr. Smith, and 0. Mr. Oakley, Mates ; Y. Mr. Yule, 
Second Master. East Declination is characterised by the sign — . 
1841. 
Position. 
Initials. 
Declination 
observed. 
Lat. 
Long. 
May 10 
— 42 52 147 24 
R. 
— 10 24-5 
19 
Hobarton, Van 
R. 
— 10 24-3 
Diemen Island. 
R. 
-10 36 
R. 
-11 24 
II. 
-12 11 
R. 
— 12 44 
R. 
-13 04 
R. 
-13 22 
R. 
— 14 01 
R. 
-14 42 
R. 
-15 08 
R. 
— 15 06 
R. 
— 14 51 
R. 
-14 29 
R. 
— 13 51 
R. 
— 13 08 
R. 
— 12 25 
R. 
— 10 29 
June 29 
At anchor. 
R. 
- 9 26 
R. 
- 7 38 
R. 
— 7 03 
R. 
- 6 19 
R. 
— 5 36 
R. 
- 5 09 
R. 
— 4 24 
R. 
- 4 49 
R. 
— 5 02 
R. 
— 5 24 
R. 
— 6 04 
R. 
— 6 24 
R. 
- 7 01 
R. 
— 7 30 
R. 
— 8 40 
R. 
— 9 32 
July 7 p.m. 
-43 17 
148 07 
R. 
— 5 33 
9 p.m. 
-42 04 
149 24 
T. 
— 12 30 
1 0 A.M. 
— 40 55 
149 12 
T. 
— 10 15 
10 P.M. 
-40 26 
149 34 
T. 
— 8 52 
11 P.M. 
-37 49 
150 21 
R. 
-10 47 
R. 
- 9 57 
T. 
-10 56 
T. 
-10 55 
R. 
-10 54 
R. 
-10 04 
R. 
-11 44 
S. 
— 11 53 
T. 
— 11 17 
-37 43 
150 22 
R. 
— 10 18 
MDCCCXLIV. 
Direction of 
ship’s head. 
Correction 
Corrected 
Correction 
Inclination. 
for ship’s 
Declina- 
for index 
attraction. 
tion. 
error. 
True 
Declination. 
KJ f U • U • U 
Mean, 7 days’ hourly observations with Declin.No. 1. 
Mean, 7 days’ hourly observations with Declin.No. 2. 
N. 
n. by w. 
N.N.W. 
n. w. by n. 
N.W. 
n.w. by w. 
W.N.W. 
w. by n. 
w. 
w. by s. 
w.s.w. 
s.w. by w. 
s.w. 
s.w. by s. 
s.s.w. 
s. by w. 
s. 
s. by e. 
S.S.E. 
s.e. by s. 
S.E. 
s.e. by e. 
e.s.e. 
e. by s. 
E. 
e. by n. 
E.N.E. 
n.e. by e. 
N.E. 
n.e. by n. 
N.N.E. 
n. by e. 
E.S.E. 
W.N.W. 
N. by w. 
N. 
N. 
N. 
n. by w. 
n. by w. 
n. by w. 
N. 
N.N.W. 
N. by w. 
N. by w, 
N. by w. 
-70 
-69 
-68 40 
u 
66 40 
— 4 
44 
-10 
17 
+ 3 
49 
- 8 
41 
+ 0 
39 
- 9 
36 
0 
00 
— 8 
52 
0 
00 
-10 
47 
0 
00 
- 9 
57 
+ 0 
35 
-10 
21 
+ 0 
35 
-10 
20 
+0 
35 
-10 
19 
0 
00 
-10 
04 
+1 
10 
-10 
34 
+ 0 
35 
-11 
18 
+ 0 
35 
-10 
42 
+ 0 
35 
- 9 
43 
— 10 24 
}- 
0 37 -10 06 
-0 37 
>-0 37 
- 9 51 
-11 01 
At the Magnetic Observatory. 
