MAGNETIC SURVEY OF A PART OF THE SOUTHERN HEMISPHERE. 
425 
Observations of the Magnetic Inclination between the Cape of Good Hope and 
Van Diemen Island, by Lieut. Alexander Smith, R.N. 
Date. 
Lat. 
Long. 
Corrected 
Inclination. 
Date. 
Lat. 
Long. 
Corrected 
Inclination. 
1844. 
O / 
1844. 
July 29» 
-38 00 
4 20 
— 52 00 
Aug. 20. 
-38 25 
76 44 
— 66 54 
30. 
— 38 28 
7 45 
-53 03 
21. 
-38 48 
77 50 
-67 14 
31. 
-39 06 
12 00 
— 55 42 
22. 
-39 04 
79 45 
-67 17 
August 1. 
-39 42 
15 44 
-57 06 
23. 
-39 58 
84 00 
— 67 43 
2. 
-39 33 
23 05 
-59 32 
24. 
-40 06 
87 00 
— 68 13 
4. 
— 39 33 
26 52 
— 61 47 
25. 
— 40 06 
90 52 
-68 41 
5. 
-39 50 
28 36 
-62 08 
26. 
— 40 02 
95 10 
-69 08 
6. 
— 40 01 
32 22 
— 62 56 
27. 
-39 52 
99 22 
—69 00 
7. 
— 40 32 
36 40 
—64 09 
28. 
-39 54 
102 00 
-69 00 
8. 
— 41 06 
41 40 
— 64 42 
29. 
-40 08 
105 55 
-69 22 
9- 
-41 00 
46 13 
-65 19 
30. 
— 40 31 
109 06 
-70 02 
10. 
-40 43 
49 12 
-66 08 
31. 
-41 16 
113 25 
-70 30 
11. 
-40 56 
53 30 
— 66 25 
Sept. 1 . 
— 41 54 
117 40 
-71 20 
13. 
-39 34 
60 55 
-67 27 
1 . 
— 41 58 
119 00 
— 71 33 
14. 
— 67 18 
2. 
— 42 17 
122 30 
— 71 45 
15. 
—39 00 
65 44 
-67 19 
3. 
-42 35 
125 40 
-72 08 
16. 
-38 31 
68 45 
— 66 45 
4. 
— 43 00 
129 36 
— 72 08 
17. 
— 38 22 
70 10 
-67 06 
5. 
-43 16 
133 44 
-72 13 
18. 
— 38 08 
73 35 
— 66 45 
6. 
— 43 28 
137 10 
— 71 55 
19. 
-38 10 
75 22 
— 66 42 
7. 
-44 06 
141 37 
— 72 14 
Observations of the Magnetic Force between the Cape of Good Hope and Van 
Diemen Island, by Lieut. Alexander Smith, R.N. 
Date. 
Lat. 
Lone-. 
Method 
Angle of 
Thermo- 
Ship’s head. 
Intensity. 
Remarks. 
employed. 
deflection. 
meter. 
Hobarton = 1 '800. 
1844. 
O 
/ 
O 
/ 
O / 
July 30. 
— 38 
28 
27 
45 
wt. 2 grs. 
20 13 
52 
S.E. \ E. 
0-953 
0-953 
Aug. 5. 
-39 
50 
28 
36 
wt. 2 grs. 
17 04 
60 
s.e. by e. 
1-121' 
> M17 
-39 
50 
28 
36 
wt. 3 grs. 
26 35 
59 
S.E. bv E. 
1-1 13 J 
9. 
— 41 
— 41 
00 
00 
46 
46 
13 
13 
wt. 2 grs. 
wt. 3 grs. 
14 50 
22 46 
60 
61 
E. i S. 
E. } S. 
1-288 
1-289 
. 1-288 
15. 
-39 
00 
65 
44 
wt. 2 grs. 
13 35 
47 
s.e. by e. 
1-4031 
. 1-383 
Much motion. 
-39 
00 
65 
44 
wt. 3 grs. 
21 26 
44 
s.e. by e. 
1-364 
18. 
— 38 
08 
73 
35 
wt. 2 grs. 
12 57 
58 
E. 
1-471 
> 1-454 
Smooth water. 
— 38 
08 
73 
35 
wt. 3 grs. 
20 18 
59 
E. 
1-437 
19. 
-38 
10 
75 
22 
wt. 2 grs. 
13 28 
66 
S.E. E. 
1-415 
> 1-435 
Smooth. 
-38 
10 
75 
22 
wt. 3 grs. 
20 02 
66 
S.E. \ E. 
1-456 j 
24. 
-40 
06 
87 
00 
wt. 2 grs. 
12 14 
64 
E.S.E. 
1-555 
> 1-597 
— 40 
06 
87 
00 
wt. 3 grs. 
17 42 
60 
E.S.E. 
1-640 j 
28. 
-39 
54 
102 
00 
wt. 2 grs. 
11 13 
51 
E.S.E. 
1-694 
> 1-724 
-39 
54 
102 
00 
wt. 3 grs. 
16 31 
51 
E.S.E. 
1-754 
30. 
— 40 
31 
109 
06 
wt. 2 grs. 
11 04 
58 
E.S.E. 
1-717" 
■ 1-751 
-40 
31 
109 
06 
wt. 3 grs. 
16 14 
59 
E.S.E. 
1-785 J 
Sept 3. 
— 42 
35 
125 
40 
wt. 2 grs. 
10 04 
56 
E. by S. 
1-886] 
■ 1-894 
-42 
35 
125 
40 
wt. 3 grs. 
15 12 
55 
e. by s. 
1-902 
5. 
— 43 
14 
133 
22 
wt. 2 grs. 
10 21 
49 
e. by s. 
1-834 
> 1-869 
-43 
14 
133 
22 
wt. 3 grs. 
15 11 
48 
e. by s. 
1-904 j 
6. 
-43 
28 
137 
10 
wt. 2 grs. 
10 06 
51 
E.i s. 
1-879' 
> 1-866 
-43 
28 
137 
10 
wt. 3 grs. 
15 36 
51 
E. i s. 
1-854 
Oct. 2. 
— 42 
— 42 
52 
52 
147 
147 
24 
24 
wt. 2 grs. 
wt. 3 grs. 
10 33 
16 05 
54 
54 
| On shore. 
1-800] 
1-800 j 
> 1-800 
Hobarton: Magnetic 
Observatory. 
Hobarton is taken as the base station ; no correction has been applied for the effect of the ship’s iron. In the 
results entered in the map of the Magnetic Force from Lieut. Smith’s observations on the 24th, 28th, and 
30th of August, the determinations with 2 grains only have been used ; those with 3 grains are so discordant 
with other results as necessarily to indicate an error in them. 
