LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM. 
175 
Observations of the Inclination with Needle F on board H.M.S. Erebus, between 
July 22nd and August II, 1840, on her passage from Christmas Harbour, Ker- 
guelen Island, to Hobarton, Van Diemen Island. 
1840. 
Latitude. 
Longitude. 
Method 
employed. 
Inclination. 
Face east. 
O / 
O / 
O / 
June 26. 
Magnetic Observatory. 
Direct. 
— 70 02*8 
Kerguelen Island. 
S. 
-69 56-3 
— 48 41 
68 54 
S. and N. 
-69 48-3 
N. 
-70 04-2 
July 22. 
-48 29 
76 55 
Direct. 
— 70 34-5 
22. 
S. 
-70 36 
23. 
— 48 17 
80 15 
Direct. 
-71 48 
23. 
S. 
-71 34-4 
24. 
— 47 55 
83 51 
Direct. 
-72 10 
24. 
S. 
-72 29 
25. 
—47 46 
86 18 
Direct. 
-73 4*5 
25. 
S. 
-73 28-5 
26. 
—47 12 
89 45 
Direct. 
-73 13 
26. 
S. 
-73 24-5 
27- 
— 47 03 
93 0 
Direct. 
-74 11-3 
27- 
S. 
-74 27-5 
28. 
-47 13 
97 07 
Direct. 
-73 14-5 
30. 
-47 39 
102 42 
Direct. 
-74 15 
30. 
S. 
— 74 22-5 
31. 
-47 35 
106 26 
Direct. 
— 74 15*2 
31. 
S. 
— 74 26-4 
Aug. 1. 
— 47 45 
110 39 
Direct. 
-74 48 
1. 
S. 
-75 6 
2 . 
-47 34 
114 15 
Direct. 
-75 20-5 
2. 
S. 
-75 6 
4. 
— 47 41 
121 30 
Direct. 
-76 9-8 
4. 
S. 
- 76 6-3 
5. 
— 47 34 
124 43 
Direct. 
-76 49-2 
5. 
S. 
-76 53-7 
6. 
-46 44 
128 26 
Direct. 
-76 1-6 
6. 
S. 
-75 59 
7. 
— 46 13 
132 0 
Direct. 
-75 43-7 
7. 
S. 
-75 45 
8. 
— 45 59 
135 38 
Direct. 
-74 33-5 
8. 
S. 
— 74 11 
9. 
— 45 17 
139 19 
Direct. 
-74 17*5 
9. 
S. 
-74 0-4 
10. 
— 44 24 
141 39 
Direct. 
— 73 39+5 
10. 
S. 
-73 33 
11. 
— 44 16 
142 38 
Direct. 
— 73 37-15 
11. 
S. 
-73 49 
(Observed 
\ on shore. 
Ship's head. 
2 
4e. 
| s.E. by e. 
j- s.E. by e. 
j s.E.byE.i 
| s.E. byE, 
js.E. by E . | 
| s.E. byE ^ 
} 
} 
j- E.S.E. 
j e. by s. i s 
j E. by s. 
} 
2 E. 
s.e. by e.^-e. 
E.S.E. 
E.S.E. 
E. i S. 
E. 
J E. | N. 
| e. by n. 
| E.N.E. 
| n.e. by e. 
j e. by n. \ n 
Corrections 
for ship’s 
attraction. 
-18 
-12 
-13 
-15 
-15 
-16 
— 8 
- 9 
— 1 
+ 6 
+ 13 
+ 21 
+ 29 
+ 36 
+ 48 
+ 59 
+ 42 
Corrected 
inclination. 
-69 59-6 
-70 55 
-71 50 
-72 34 
-73 33 
-73 35 
-74 37 
-74 28 
-74 31 
-75 08 
-75 26 
-76 04 
-76 40 
-75 41 
-75 17 
-73 48 
-73 23 
-72 37 
-73 03 
Remarks. 
"Remark by Captain 
Ross. “ From these 
observations the In- 
dex error of Needle 
F.(face east), as used 
on board ship, may 
be obtained.” 
Considerable swell. 
A high sea. 
Too much motion to 
continue. 
Much motion. 
Much motion. 
Very unsteady. 
The index correction — l' 7 has been applied in the final column. 
