LINES OF MAGNETIC DECLINATION IN THE ATLANTIC. 
213 
Table XII. (Continued.) 
Lat. 
Long. 
Date. 
Observer. 
Observed 
Declina- 
tion. 
Correc- 
tion for 
Epoch. 
Corrected 
Declina- 
tion. 
Remarks. 
Between the latitudes of 50' 
^ and 40' 
(continued). 
O 
47 
20 
35.3 
/ 
14 
Aug. ]830.!Erman. 
O 
25 
10 
O 
0 
00 
o 
25 
10 
At sea. 
47 
44 
354 
16 
Aug. 1830.Erman. 
24 
35 
0 
00 
24 
35 
At sea. 
48 
09 
355 
02 
June 1839.IDu Petit-Thouars. 
24 
03 
0 
00 
04 
03 
At sea. 
46 
59 
355 
13 
Aug. 1830jErman. 
24 
02 
0 
00 
24 
02 
At sea. 
48 
23 
355 
31 
Nov. 1837. 
Darondean. 
24 
58 
— 0 
10 
24 
48 
Brest. 
49 
58 
356 
27 
Aug. 1842. 
Lefroy. 
25 
18 
0 
00 
25 
18 
At seaf. 
40 
22 
1 
56 
June 1838. 
Berard. 
20 
01 
0 
00 
20 
01 
At sea. 
48 
50 
2 
22 
Feb. 1838. 
Darondean. 
21 
38 
0 
00 
21 
38 
Paris Observatory. 
40 
13 
2 
26 
Aug. 1842. 
Berard. 
19 
45 
0 
00 
19 
45 
At sea. 
40 
24 
2 
27 
June 1838. 
Berard. 
21 
29 
0 
00 
21 
29 
At sea. 
40 
48 
2 
30 
Aug. 1842. 
Berard. 
19 
00 
0 
00 
19 
00 
At sea. 
41 
11 
2 
39 
Aug. 1842. 
Berard. 
19 
30 
0 
00 
19 
30 
At sea. 
41 
26 
3 
52 
Aug. 1842. 
Berard. 
19 
30 
0 
00 
19 
30 
At sea. 
41 
32 
4 
18 
Aug. 1842. 
Berard. 
19 
00 
0 
00 
19 
00 
At sea. 
42 
04 
4 
48 
Aug. 1842. 
Berard. 
18 
30 
0 
00 
18 
30 
At sea. 
43 
05 
5 
55 
Jan. 1836. 
Darondean. 
19 
16 
0 
00 
19 
16 
Toulon. 
46 
12 
6 
09 
Jan. 1843. 
Plantamour. 
18 
57 
+ 0 
15 
19 
12 
Geneva. 
Between the latitudes of 40'^ and 30 
0 
32 
41 
280 
07 
May 1841. 
Barnett. 
- 2 
24 
-0 
05 
2 
29 lcharleston. 
30 
54 
280 
15 
May 1841. 
Barnett. 
— 3 
07 
— 0 
05 
— 3 
12 
At seaf. 
31 
54 
280 
29 
May 1841. 
Barnett. 
— 2 
45 
-0 
05 
— 2 
50 
At seaf. 
38 
56 
283 
25 
June 1 845. 
U.S. Coast Survey. 
+ 2 
14 
— 0 
08 
+ 2 
06 
-'Annapolis. 
33 
55 
283 
57 
May 1841. 
Barnett. 
— 1 
25 
— 0 
05 
— 1 
30 
At seaf. 
39 
22 
284 
30 
June 1846. 
U.S. Coast Survey. 
+ 3 
18 
— 0 
08 
+ 3 
10 
Bombay Hook. 
39 
25 
284 
40 
June 1846. 
U.S. Coast Survey. 
2 
15 
-0 
08 
2 
07 
39 
58 
284 
50 
May 1846. 
U.S. Coast Survey. 
3 
51 
-0 
08 
3 
43 
Girard College. 
39 
10 
284 
52 
June 1846. 
U.S. Coast Survey. 
2 
59 
-0 
08 
2 
51 
Egg Island. 
38 
47 
284 
54 
May 1841. 
Barnett. 
4 
42 
— 0 
05 
4 
37 
Cape Henlopen. 
39 
15 
284 
59 
June ] 846. 
U.S. Coast Survey. 
3 
06 
-0 
05 
3 
01 
Port Norris. 
35 
08 
285 
28 
May 1841. 
Barnett. 
1 
57 
-0 
05 
1 
52 
At seaf. 
38 
00 
285 
35 
May 1841. 
Barnett. 
3 
51 
-0 
02 
3 
49 
At seaf. 
39 
31 
285 
41 
Nov. 1846. 
U.S. Coast Survey. 
4 
24 
— 0 
05 
4 
19 
Tuche Island. 
38 
45 
289 
09 
May 1841. 
Barnett. 
6 
44 
-0 
07 
6 
37 
At seaf. 
39 
18 
290 
20 
May 1841. 
Barnett. 
6 
58 
-0 
07 
6 
51 
At seaf. 
39 
37 
290 
30 
May 1841. 
Barnett. 
7 
25 
-0 
07 
7 
18 
At seaf. 
39 
52 
291 
20 
May 1841. 
Barnett. 
7 
42 
-0 
07 
7 
35 
At seaf. 
32 
23 
295 
09 
Aug. 1846. 
Barnett. 
6 
53 
-0 
39 
6 
14 
Bermuda. 
32 
23 
295 
16 
May 1837. 
Milne. 
6 
40 
+ 0 
15 
6 
55 
Bermuda. 
32 
18 
300 
42 
Nov. 1842. 
Jehennc. 
8 
46 
— 0 
18 
8 
28 
At sea. 
33 
53 
318 
07 
Aug. 1830. 
Erman. 
17 
00 
+ 1 
26 
18 
26 
At sea. 
34 
44 
318 
13 
Aug. 1830. 
Erman. 
17 
03 
+1 
26 
18 
29 
At sea. 
33 
39 
318 
32 
Aug. 1830. 
Ei'man. 
17 
00 
+ 1 
26 
18 
26 
At sea. 
31 
36 
318 
58 
June 1839. 
Du Petit-Thouars. 
16 
00 
+ 0 
04 
16 
04 
At sea. 
32 
53 
318 
58 
Aug. 1830. 
Erman. 
16 
28 
+ 1 
26 
17 
54 
At sea. 
31 
56 
319 
20 
June 1839. 
Du Petit-Thouars. 
15 
52 
+ 0 
04 
15 
56 
At sea. 
35 
59 
319 
32 
Aug. 1830. 
Erman. 
18 
02 
+ 1 
26 
19 
28 
At sea. 
31 
48 
319 
36 
Aug. 1830. 
Erman. 
15 
40 
+ 1 
26 
17 
06 
At sea. 
30 
32 
319 
45 
Aug. 1 830. 
Erman. 
15 
03 
+ 1 
26 
16 
29 
At sea. 
34 
04 
320 
12 
June 1839. 
Du Petit-Thouars. 
17 
22 
+ 0 
04 
17 
26 
At sea. 
30 
48 
320 
16 
May 1846. 
Sulivan. 
17 
47 
-0 
58 
16 
49 
At seaf. 
32 
10 
321 
05 
May 1846. 
Sulivan. 
18 
15 
— 0 
58 
17 
17 
At seaf. 
37 
28 
321 
25 
Aug. 1830. 
Erman. 
19 
43 
+ 1 
26 
21 
09 
At sea. 
30 
02 
321 
27 
June 1 839. 
Du Petit-Thouars. 
18 
30 +0 
04 
18 
34 
At sea. 
37 
05 
321 
35 
Nov. 1842. 
Jehenne. 
21 
02 
-0 
22 
20 
40 
At sea. 
33 
46 
322 
10 
May 1846. 
Sulivan. 
19 
15 
-0 
55 
18 
20 
At seaf. 
35 
17 
322 
14 
Oct. 1837. 
Vaillant. 
18 
37 
+0 
20 
18 
57 
At sea. 
2 p 
MDCCCXLIX. 
