212 
LINES OF MAGNETIC DECLINATION IN THE ATLANTIC. 
Table XII. (Continued.) 
Lat. 1 
Long. 
Date. 1 
Observer. 
Observed 
Declina- 
tion. 
Correc- 
tion for 
Epoch. 
Corrected 
Declina- 
tion. 
Remarks. 
Between the latitudes of 50° 
and 40° 
(continued). 
44 
14 
323 
22 
Aug. 1842. 
Lefroy. 
O 
28 
32 
— 0 
/ 
22 
0 
28 
10 
At seaf. 
40 
32 
323 
26 
Oct. 1837. 
Vaillant. 
24 
52 
+ 0 
20 
25 
12 
At sea. 
46 
09 
323 
37 
Aug. 1842. 
Lefroy. 
30 
38 
-0 
25 
30 
13 
At sea)*. 
40 
30 
323 
56 
Oct. 1837. 
Vaillant. 
25 
35 
+ 0 
20 
25 
55 
At sea. 
43 
34 
324 
30 
June 1841. 
Barnett. 
28 
22 
-0 
12 
28 
10 
At seaf. 
43 
50 
324 
30 
June 1841. 
Barnett. 
27 
12 
— 0 
12 
27 
00 
At seaf. 
48 
11 
324 
30 
Aug. 1842. 
Lefroy. 
31 
23 
-0 
25 
30 
58 
At seaf. 
42 
03 
325 
11 
Oct. 1837. 
Vaillant. 
24 
25 
+ 0 
20 
24 
45 
At sea. 
40 
37 
325 
13 
Oct. 1837. 
Vaillant. 
26 
42 
+ 0 
20 
27 
02 
At sea. 
47 
06 
325 
40 
Aug. 1842. 
Lefroy. 
32 
24 
-0 
25 
31 
59 
At seaf. 
40 
55 
326 
08 
Aug. 1830. 
Ernian. 
24 
48 
+ 1 
16 
26 
04 
At sea. 
46 
41 
326 
36 
Aug. 1842. 
Lefroy. 
30 
47 
— 0 
22 
30 
25 
At seaf. 
41 
39 
327 
19 
Aug. 1830. 
Erman. 
25 
16 
+ 1 
12 
26 
28 
At sea. 
43 
26 
329 
27 
Aug. 1830. 
Ernian. 
26' 
35 
+ 1 
08 
27 
43 
At sea. 
42 
39 
329 
55 
Oct. 1837. 
Vaillant. 
23 
26 
+ 0 
15 
23 
41 
At sea. 
47 
21 
330 
56 
Aug. 1842. 
Lefroy. 
30 
49 
— 0 
18 
30 
31 
At seaf. 
44 
35 
330 
57 
Aug. 1830. 
Erman- 
27 
36 
+ 1 
10 
28 
46 
At sea. 
41 
37 
331 
37 
1839. 
Du Petit- Thouars. 
22 
07 
+ 0 
04 
22 
11 
At sea. 
45 
41 
332 
57 
Atig. 1830. 
Erman. 
28 
08 
+ 1 
02 
29 
10 
At sea. 
43 
18 
333 
04 
Oct. 1837. 
Vaillant. 
24 
22 
+ 0 
13 
24 
35 
At sea. 
46 
53 
334 
07 
June 1841. 
Barnett. 
29 
40 
-0 
08 
29 
32 
At seaf. 
46 
20 
335 
05 
Aug. 1830. 
Erman. 
28 
18 
+ 0 
57 
29 
15 
At sea. 
47 
20 
335 
09 
Aug. 1 842. 
Lefroy. 
31 
13 
— 0 
16 
30 
57 
At seaf. 
46 
49 
336 
05 
.Tune 1841. 
Barnett. 
30 
04 
-0 
08 
29 
56 
At seaf. 
44 
03 
336 
25 
Oct. 1837. 
Vaillant. 
24 
20 
+ 0 
14 
24 
34 
At sea. 
45 
45 
336 
26 
Oct. 1839. 
Berard. 
25 
30 
-fO 
02 
25 
32 
At sea. 
47 
33 
336 
56 
Aug. 1842. 
Lefroy. 
31 
17 
-0 
16 
31 
01 
At seaf. 
40 
35 
337 
15 
1836. 
FitzRoy. 
25 
00 
+ 0 
14 
25 
14 
At sea. 
46 
43 
338 
23 
Oct. 1839. 
Berard. 
27 
00 
+ 0 
01 
27 
01 
At sea. 
46 
53 
338 
25 
June 1841. 
Barnett. 
30 
51 
— 0 
06 
30 
45 
At seaf. 
41 
28 
338 
29 
1836. 
FitzRoy. 
25 
38 
+ 0 
14 
25 
52 
At sea. 
47 
03 
339 
07 
Aug. 1830. 
Erman. 
27 
51 
-f 0 
45 
28 
36 
At sea. 
47 
37 
339 
46 
June 1841. 
Barnett. 
30 
30 
— 0 
06 
30 
24 
At seaf. 
42 
06 
339 
54 
1836. 
FitzRov. 
26 
00 
+ 0 
12 
26 
12 
At sea. 
43 
14 
340 
17 
June 1839. 
Du Petit-Thouars. 
22 
52 
+ 0 
02 
22 
54 
At sea. 
48 
02 
340 
55 
Aug. 1842. 
Lefroy. 
30 
51 
-0 
12 
30 
39 
At seaf. 
47 
55 
342 
25 
June 1841. 
Barnett. 
28 
23 
-0 
05 
28 
18 
At seaf. 
48 
11 
343 
18 
June 1841. 
Barnett. 
29 
26 
-0 
05 
29 
21 
At seaf. 
49 
16 
343 
51 
Sept. 1846. 
Moore. 
32 
01 
— 0 
20 
31 
41 
At seaf. 
44 
05 
344 
05 
June 1839. 
Du Petit-Thouars. 
23 
09 
+ 0 
02 
23 
11 
At sea. 
48 
18 
344 
23 
Aug. 1842. 
Lefroy. 
29 
29 
-0 
08 
29 
21 
At seat- 
47 
56 
345 
03 
Aug. 1830. 
Erman. 
26 
19 
+ 0 
29 
26 
48 
At sea. 
48 
34 
346 
00 
June 1841. 
Barnett. 
28 
37 
— 0 
05 
28 
32 
At seat- 
40 
15 
346 
10 
1836. 
FitzRoy. 
24 
45 
+ 0 
10 
24 
55 
At sea. 
41 
00 
346 
30 
1836. 
FitzRoy. 
24 
49 
+ 0 
10 
24 
59 
At sea. 
42 
31 
347 
20 
1836. 
FitzRoy. 
24 
18 
+ 0 
10 
24 
28 
At sea. 
42 37 
347 
30 
1836. 
FitzRoy. 
23 
34 
+ 0 
10 
23 
44 
At sea. 
43 
20 
348 
00 
1836. 
FitzRoy. 
23 
50 
+ 0 
10 
24 
00 
At sea. 
48 
42 
348 
04 
June 1841. 
Barnett. 
27 22 
-0 
05 
27 
17 
At seaf. 
48 
27 
348 
32 
Aug. 1830. 
Erman. 
26 
07 
+ 0 
23 
26 
30 
At sea. 
48 
48 
349 
28 
Aug. 1842. 
Lefroy. 
27 
44 
-0 
03 
27 
41 
At seaf. 
49 
25 
350 
15 
Sept. 1846. 
Moore. 
27 
46 
0 
00 
27 
46 
At seaf. 
48 
57 
350 
28 
Aug. 1 830. 
Erman. 
25 
54 
+ 0 
10 
26 
04 
At sea. 
46 
18 
351 
54 
June 1839. 
Du Petit-Thouars. 
24 
14 
0 
00 
24 
14 
At sea. 
46 
38 
351 
54 
Dec. 1842. 
Jehenne. 
27 
10 
0 
00 
27 
10 
At sea. 
49 
11 
352 
22 
Aug. 1842. 
Lefroy. 
26 
16 
+0 
05 
26 
21 
At seaf. 
