LINES OF MAGNETIC DECLINATION IN THE ATLANTIC. 
•209 
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°. 
0 
43 
40 
280 
38 
Jan. 1840.lRiddell. 
0 
1 
27 
O 
0 
00 
O 
1 
27 
Magnetic Observatory, Toronto. 
45 
36 
283 
07 
May 1843. 
Lefroy. 
5 
11 
+ 0 
05 
5 
16 
Fort Portage. 
45 
29 
284 
12 
May 1843. 
Lefrov. 
6 
58 
+ 0 
05 
7 
03 
6 miles below Bytown. 
40 
08 
284 
17 
May 1846. 
U.S. Coast Survey. 
4 
22 
-0 
04 
4 
18 
Whitehill. 
40 
05 
284 
26 
June 1846. 
U.S. Coast Survey. 
3 
13 
-0 
04 
3 
09 
Fort Delaware. 
45 
37 
284 
48 
May 1843. 
Lefroy. 
6 
58 
+ 0 
05 
7 
03 
Alfred Township. 
45 
37 
285 
05 
May 1843. 
Lefroy. 
7 
28 
+ 0 
05 
7 
33 
Point aux Chenes. 
45 
36 
285 
28 
May 1843. 
Lefrov. 
8 
41 
+ 0 
05 
8 
46 
Carillon. 
45 
36 
285 
38 
Mav 1843. 
Lefroy. 
8 
26 
+ 0 
05 
8 
31 
On the Ottawa. 
40 
43 
285 
59 
1844. 
Renwick. 
6 
13 
— 0 
02 
6 
11 
Columbia College. 
40 
28 
286 
00 
Jan. 1844. 
U.S. Coast Survey. 
5 
51 
-0 
02 
5 
49 
Sandy Harbour. 
45 
30 
286 
25 
1842. 
Lefroy. 
8 
58 
0 
00 
8 
58 
Montreal. 
45 
32 
286 
26 
1834. 
Bayfield. 
8 
00 
0 
00 
8 
00 
Montreal. 
40 
53 
286 
29 
1844. 
Renwick. 
6 
54 
— 0 
02 
6 
52 
Oyster Bay. 
45 
00 
286 
39 
Oct. 1845. 
Boundary Survev. 
11 
28 
0 
00 
11 
28 
Rouse’s Point. 
45 
19 
286 
42 
1842. 
Lefroy. 
11 
22 
0 
00 
11 
22 
St. John’s. 
46 
06 
286 
39 
1830. 
Bayfield. 
10 
30 
0 
00 
10 
30 
Stone Island. 
46 
03 
287 
00 
1830. 
Bayfield. 
11 
00 
0 
00 
11 
00 
Sorel. 
46 
03 
287 
00 
1842. 
Lefroy. 
11 
23 
0 
00 
11 
23 
Sorel. 
41 
15 
287 
05 
Sept. 1845. 
U.S. Coast Survey. 
6 
17 
-0 
06 
6 
11 
Newhaven. 
46 
14 
287 
16 
1828. 
Bayfield. 
11 
15 
+ 0 
06 
11 
21 
Lake St. Peter. 
46 
17 
287 
18 
1835. 
Bayfield. 
10 
53 
+ 0 
02 
10 
55 
Point du I.ac. 
44 
16 
287 
23 
1829-1830 
Graham. 
12 
26 
+ 0 
10 
12 
36 
Montpelier. 
46 
19 
287 
£4 
1842. 
Lefroy. 
11 
58 
-0 
10 
11 
57 
Three Rivers. 
45 
53 
287 
26 
1842. 
Lefroy. 
12 
28 
— 0 
01 
12 
27 
Drummondville. 
46 
25 
287 
36 
1835. 
Bayfield. 
12 
52 
+0 
02 
12 
54 
Isle Bigot. 
41 
06 
287 
38 
1845. 
Renwick. 
7 
14 
-0 
06 
7 
08 
Sandy Point. 
45 
00 
287 
47 
Nov. 1845. 
Boundary Survey. 
11 
33 
0 
00 
11 
33 
Stanstead. 
44 
02 
287 
55 
Sept. 1830. 
Graham. 
7 
32 
+ 0 
10 
7 
42 
Haverhill. 
43 
56 
288 
05 
Sept. 1830. 
Graham. 
9 
08 
+ 0 
10 
9 
18 
Warren. 
41 
20 
288 
05 
1842. 
U.S. Coast Survey. 
7 
38 
— 0 
06 
7 
32 
Stonington. 
46 
40 
288 
06 
Aug 1845. 
Bayfield. 
12 
52 
+ 0 
02 
12 
54 
Platon Point. 
43 
49 
288 
07 
Sept. 1830. 
Graham. 
9 
38 
+ 0 
10 
9 
48 
West Rumney. 
43 
45 
288 
18 
Sepl. 1 830. 
Graham. 
8 
32 
+ 0 
10 
8 
42 
Plymouth. 
45 
01 
288 
30 
Dec. 1845. 
Graham. 
12 
22 
0 
00 
12 
££ 
Canaan Corner. 
44 
43 
288 
31 
Sept. 1830. 
Graham. 
7 
53 
+ 0 
10 
8 
03 
Lake Winninsissiogee. 
46 
49 
288 
44 
1842. 
Lefroy. 
14 
12 
— 0 
02 
14 
10 
Quebec, Artillery Barracks. 
45 
15 
288 
46 
May 1845. 
Boundary Survey. 
12 
17 
— 0 
17 
12 
00 
Prospect Hill. 
46 
49 
288 
47 
1831-1836 
Bayfield. 
14 
14 
+ 0 
06 
14 
20 
Quebec, Wolfe’s Monument. 
45 
15 
288 
47 
Oct. 1845. 
Boundary Survey. 
12 
00 
-0 
18 
11 
42 
Observatory, Connecticut River. 
42 
23 
288 
52 
1840. 
Lowering and Bond. 
9 
18 
0 
0 
9 
18 
Observatory, Cambridge, U.S. 
45 
18 
288 
55 
June 1845. 
Boundary Surve}’. 
13 
20 
-0 
17 
13 
03 
Near the Highland Boundary Line. 
41 
19 
288 
59 
1844. 
Renwick. 
7 
29 
-0 
05 
7 
24 
Croton Point. 
45 
20 
289 
05 
June 1845. 
Boundary Survey. 
13 
30 
-0 
17 
13 
13 
Arnold’s River. 
41 
38 
289 
05 
Aug. 1845. 
U.S. Coast Survey. 
8 
57 
— 0 
08 
8 
49 
Fort Point. 
45 
26 
289 
12 
July 1845. 
Boundary Survey. 
13 
10 
-0 
17 
12 
53 
Dead River. 
41 
28 
289 
14 
Aug. 1846. 
U.S. Coast Survey. 
9 
10 
-0 
10 
9 
00 
Tarpaulin Town. 
43 
05 
289 
15 
July 1844. 
Boundary Survey. 
9 
47 
-0 
14 
9 
33 
Boiling Rock. 
45 
30 
289 
16 
Oct. 1844. 
Boundary Survey. 
13 
20 
— 0 
17 
13 
03 
Near the Highland Boundary. 
45 
32 
289 
18 
Sept. 1844. 
Boundary Survey. 
13 
30 
-0 
16 
13 
14 
Near the Highland Boundary. 
45 
37 
289 
23 
Sept. 1844. 
Boundary Survey. 
13 
37 
-0 
16 
13 
21 
Near the Highland Boundary. 
41 
29 
289 
24 
Aug. 1846. 
U.S. Coast Survey. 
8 
50 
— 0 
10 
8 
40 
Indian Hill. 
47 
08 
289 
28 
1842. 
Lefroy. 
14 
00 
-0 
04 
13 
56 
At seaf. 
47 
04 
289 
28 
1831. 
Bayfield. 
14 
28 
+ 0 
19 
14 
47 
Crane Island. 
45 
42 
289 
32 
Sept. 1844. 
Boundary Survey. 
13 
50 
— 0 
16 
13 
34 
On the Flighland Boundary. 
47 
25 
289 
34 
1831, 
Bayfield. 
15 
17 
+ 0 
19 
15 
36 
Isle aux Condres. 
