MAGNETIC SURVEY OF A PART OF THE SOUTHERN HEMISPHERE. 
411 
Observations of the Magnetic Force. (Continued.) 
Corrections. 
[ 
Angle of 
deflec- 
tion. 
Date. 
Lat. 
Long. 
Method 
employed. 
S 2 
V 
H 
Ship's head. 
a 
o 
c 
Ship’s 
attrac- 
Tempe- 
rature. 
Corrected 
Intensity. 
Remarks. j 
tion. 
1 
1845. 
o / 
O / 
Def. N. 
✓ 
o 
Mav 1 3. 
-20 39 
77 43 
37 
41 
81 
S.E. 
1-262 
— •032 
-•001 
1*229 " 
Def. N. 
38 
00 
81 
E. 
1-249 
-•016 
-•001 
1-232 
Made to determine 
the effect of the 
ship’s iron at sea. 
Def. N. 
Def. N. 
37 
38 
40 
24 
81 
80 
N.E. 
N. 
1-264 
1-232 
-•001 
+ •002 
—•001 
-•001 
1-262 
1-233 
>1-233 
Def. N. 
Def. N. 
38 
38 
31 
20 
79 
79 
N.W. 
W. 
1-228 
1-235 
— •001 
— •016 
-•001 
-•001 
1-226 
1-218 
A rolling motion, 
not very steady at 
some points. 
16. 
-20 26 
70 36 
Def. N. 
38 
40 
78 
w. by n. 
1-221 
— •011 
— •001 
1-209 ^ 
Def. S. 
43 
52 
78 
w. by n. 
1-221 
-•Oil 
-•001 
1-209 
S-1’205 Unsteady. 
Def. N.S. 
59 
26 
78 
w. by n. 
1-214 
-•Oil 
-•007 
M96 j 
17. 
-20 34 
69 24 
Def. N. 
38 
37 
78 
w. by n. 
1-222 
-•011 
-•001 
1-210 
Def. S. 
43 
59 
78 
w. by n. 
1-217 
-•011 
-•001 
1-205 
I 
Def. N.S. 
59 
09 
78 
w. by n. 
1-222 
— •011 
—•007 
1-204 
I 
Def. N. 
Def. S. 
38 
43 
09 
17 
79 
80 
s.w.byw.^w. 
s.w.byw.-^w. 
1-243 
1-248 
— •030 
-•030 
—•001 
-•001 
1-212 
1-217 
>1-210 
Unsteady. 
Def. N.S. 
58 
34 
80 
s.w.byw.-|w. 
1-243 
— •030 
-•007 
1-206 
Mag. N. 
38 
23 
80 
s.w.byw.^w. 
1-237 
-•030 
— •002 
1-205 
Mag-. S. 
42 
07 
80 
s.w.byw.-^-w. 
1-253 
-•030 
-•002 
1-221 
19. 
-21 11 
67 54 
Def. N. 
38 
57 
76 
N.W. 
1-209 
-•001 
-•001 
1-207 * 
Def. S. 
44 
17 
76 
N.W. 
1-203 
-•001 
— •001 
1-201 
Def. N.S. 
39 
54 
76 
N.W. 
1-196 
-•001 
-•005 
1-190 
Unsteady. 
Mag. N. 
38 
52 
76 
N.W. 
1-211 
— •001 
-•001 
1-209 
Ll-206 
wt. 1 gr. 
22 
44 
76 
N.W. 
1-223 
— •001 
+ •001 
1-223 
wt. 1| gr. 
35 
01 
76 
N.W. 
1-215 
-•001 
+ •001 
1-215 
wt. 2 grs. 
51 
35 
76 
N.W. 
1-195 
— •001 
+ •001 
1*195 
Steady. 
20. 
— 21 12 
67 29 
Def. N. 
39 
02 
74 
w. by n. 
1-205 
— •012 
-•001 
1*192 1 
Def. S. 
44 
03 
77 
w. by n. 
1-212 
— •012 
— •001 
1*199 
U-190 
Unsteady. 
Def. N.S. 
59 
59 
77 
w. by n. 
1-194 
— •012 
— •004 
1-178 
21. 
-21 01 
66 10 
Def. N. 
39 
03 
76 
w. by n. 
1-204 
— •012 
-•001 
1-191 1 
Def. S. 
44 
29 
76 
w. by n. 
1-195 
— •012 
— •001 
1-182 
Def. N.S. 
59 
40 
76 
w. by n. 
1*204 
-•012 
-•005 
1*187 
QO 
!>. 
A 
Unsteady. 
Mag. N. 
39 
14 
76 
w. by n. 
1-194 
-•012 
-•001 
1*181 
Mag. S. 
43 
48 
76 
w. by n. 
1-163 
-•012 
-•001 
1-150 J 
22. 
-20 40 
62 58 
Def. N. 
39 
28 
74 
w. by n. 
1-189 
-•012 
-•001 
1-176 i 
Def. S. 
Def. N.S. 
45 
59 
01 
41 
74 
74 
w. by n. 
w. by n. 
1-173 
1-203 
— •012 
-•012 
-•001 
-•005 
1 *1 60 
1-186 
>M73 
Table steady. 
Mag. N. 
39 
28 
74 
w. by n. 
1-181 
-•012 
-•001 
1-168 J 
27. 
-20 09 
57 31 
Def. N. 
40 
07 
28 
77 
1-165 
— •001 
1-164 ^ 
Def. S. 
45 
77 
77 
77 
1-153 
-•001 
1-152 
Def. N.S. 
60 
43 
On shore 
> at Mau- 
ritius. 
1-167 
1-158 
—•006 
1-161 
>.1*1 55 
Steady. 
Mag. N. 
39 
44 
55 
— •001 
1-157 
1-137 
1*164 ' 
1-256* 
Mag. S. 
wt. 1 gr. 
wt. \\ gr.* 
wt. 2 grs. 
Def. N. 
14 
77 
80 
1-138 
-•001 
23 
59 
46 
1-163 
+ •001 
+ •001 
+ •001 
-•001 
33 
80 
1-255 
>1-156 
Steady. 
54 
A 2 
80 
1-147 
1-182 
1-148 
30. 
-21 50 
53 25 
39 
41 
81 
s.w. by w. 
— •027 
1*154 T 
Def. S. 
44 
25 
81 
s.w. by w. 
1-198 
-•027 
-•001 
1-170 
>1-161 
Unsteady. 
Def. N.S. 
59 
59 
80 
s.w. by w. 
1-194 
-•027 
— •008 
M59 
June 3. 
-26 26 
48 20 
Def. N. 
39 
31 
79 
n.w. by w. 
1-187 
-•005 
-•001 
M8i i 
Def. S. 
45 
18 
78 
N.w. by w. 
1-161 
-•005 
— •001 
M55 
>1-164 
Unsteady. 
Def. N.S. 
60 
41 
78 
N.w. by w. 
1-168 
-•005 
-•006 
M57 
4. 
-27 14 
45 50 
Def. N. 
39 
44 
69 
w. 
1-179 
-•018 
— •001 
1-160 -T 
I 
Def. S. 
44 
39 
70 
w. 
1-188 
— •018 
-•001 
1-169 
>1-159 
Unsteady. 
Def. N.S. 
60 
38 
70 
w. 
1-169 
— •018 
-•003 
1-148 
j 
* This observation is evidently wrong, and is omitted in the mean. 
