736 
APPENDIX. 
TABLE XII. 
Containing the VARIATION of the MAGNETIC NEEDLE at Sea, with BARLOW’S PLATE attached to the 
COMPASS. 
NORTH ATLANTIC. 
SOUTH 
PACIFIC. 
Date. 
Latitude. 
Longitude. 
Variation. 
Date. 
Latitude. 
Longitude. 
Variation. 
Late. 
Latitude. 
Longitude. 
Variation. 
North, 
West. 
West. 
North. 
West. 
West. 
South. 
West. 
East. 
1825. 
0 
f 
0 
0 • 
1828. 
0 
' 
0 
' 
0 ' " 
1825. 
0 
0 
! 
0 ' 
June. 
25 
46 ■ 
17 
11 
18 05 30 
Sept. 
42 
26 
21 
36 
27 54 00 
Sept. 
55 
40 
70 
03 
25 19 08 
21 
21 
19 
29 
18 18 34 
— 
41 
06 
23 
02 
27 40 00 
— 
56 
13 
70 
21 
24 20 10 
23 
52 
20 
00 
17 42 46 
— 
39 
11 
25 
28 
24 34 00 
— 
55 
35 
73 
57 
24,30 25 
22 
23 
20 
53 
17 15 20 
35 
48 
28 
46 
24 41 30 
— 
54 
37 
/O 
10 
2.5''56 10 
17 
51 
26 
58 
14 14 57 

35 
42 
29 
45 
19 00 00 
— 
.. 
24 45 36 
17 
00 
27 
00 
14 14 23 
— 
28 
57 
36 
00 
14 8 30 
— 
54 
57 
.. 
25 17 25 
13 
49 
27 
53 
11 56 13 

28 
25 
36 
16 
13 27 20 
— 
48 
56 
82 
36 
22 31 00 
11 
31 
27 
24 
11 38 12 

27 
49 
35 
26 
13 33 45 
Oct. 
46 
06 
80 
36 
22 8 53 
11 
39 
11 44 11 

27 
45 
35 
16 
14 04 10 
— 
44 
24 
78 
36 
21 20 00 
11 
31 
11 44 12 
— 
26 
47 
35 
08 
13 04 15 
— 
38 
27 
78 
08 
17 22 00 
7 
01 
26 
18 
10 53 18 

23 
45 
33 
30 
13 21 00 
— 
.. 
. 
78 
08 
17 20 00 

7 
10 
26 
17 
11 48 00 

21 
35 
33 
17 
11 31 45 
— 
75 
08 
16 3 55 
26 
18 
14 47 30 
August, 
15 
24 
27 
42 
12 22 25 
— 
33 
04 
72 
05 
15 45 35 

6 
32 
26 
01 
12 00 40 

14 
21 
25 
40 
14 19 10 
— 
. 
16 32 11 
3 
01 
27 
23 
9 14 35 

5 
05 
23 
20 
12 03 30 
— 
.. 
. 
. 
16 16 16 

1 
43 
29 
09 
9 05 30 
— 
.. 
. 
17 50 10 
32 
54 
74 
32 
17 42 50 
Nov. 
31 
1 4 
/7 
lo 
lo 4y oo 
— 
30 
29 
84 
44 
15 12 15 
SOUTH ATLANTIC. 
— 
r. 
15 37 30 
— ' 
30 
20 
87 
15 
13 56 25 
— 
30 
25 
88 
58 
12 48 58 
1825. 
South. 
West. 
West. 
1828. 
South. 
West. 
West. 
— 
29 
32 
90 
30 
13 9 30 
0 
0 
0 ' " 
0 
1 
0 
0 ' " 
— 
28 
12 
92 
50 
12 28 45 
June. 
0 
16 
30 
21 
7 28 52 
August 
0 
21 
24 
41 
10 46 05 
— 
28 
16 
96 
22 
12 15 25 
0 
47 
30 
49 
7 10 30 

3 
09 
23 
50 
10 53 20 
— 
27 
21 
102 
52 
10 03 00 
- 
7 
07 
33 
19 
4 50 44 
— 
9 
35 
25 
20 
9 56 25 
— 
26 
52 
103 
45 
9 39 35 
8 
10 
33 
54 
4 09 25 
— 
23 
49 
29 
47 
2 29 40 
— 
. 
•• 
9 49 10 
9 
52 
34 
34 
5 28 05 
26 
30 
33 
15 
0 12 60 
— 
. 
10 35 10 
July* 
12 
09 
34 
38 
4 32 40 
East. 
— 
26 
46 
104 
31 
9 35 15 
14 
49 
34 
43 
3 08 25 
1- - 
26 
09 
38 
53 
2 13 00 
— 
26 
30 
105 
29 
8 14 25 

15 
42 
34 
42 
2 05 50 
July. 
27 
23 
41 
19 
4 56 50 
— 
26 
43 
107 
45 
9 41 05 
17 
17 
35 
48 
1 58 05 

28 
29 
43 
29 
2 53 20 
— 
26 
18 
113 
29 
7 08 10 

19 
00 
36 
40 
0 32 00 
30 
24 
43 
40 
5 00 00 
— 
25 
30 
113 
43 
8 03 10 
East. 
_ 
31 
32 
43 
45 
5 32 50 
— 
25 
42 
114 
50 
7 28 5u 

20 
11 
38 
22 
0 34 10 

32 
42 
44 
59 
6 59 10 
— 
25 
28 
116 
40 
8 15 30 
23 
27 
41 
10 
3 09 54 
37 
30 
48 
05 
9 23 05 
— 
24 
24 
117 
48 
5 48 la 
23 
08 
4 22 35 
June. 
43 
07 
51 
17 
14 5 50 
— 
24 
35 
120 
16 
7 07 05 
August 
. 31 
12 
46 
26 
3 40 49 
56 
57 
73 
36 
27 40 10 
— 
25 
02 
122 
43 
8 16 40 
Sept. 
42 
02 
7 37 55 
■ — 
24 
39 
124 
53 
7 54 20 
43 
34 
48 
26 
12 46 45 
— 
24 
49 
125 
49 
7 40 50 

48 
25 
54 
07 
17 59 40 
Dec. 
24 
38 
126 
51 
6 54 30 

51 
03 
57 
15 
19 00 53 
— 
23 
41 
130 
23 
6 33 20 

54 
41 
60 
00 
21 49 07 
— 
24 
03 
130 
54 
6 38 40 
— 
56 
43 
63 
10 
22 59 01 
23 
01 
132 
38 
8 05 10 
