GENERAL SIR EDWARD SABINE ON TERRESTRIAL MAGNETISM, 
387 
ZONE III.— Lat. 50° to 55° N. 
Stations. 
At sea 
Douai 
Lille 
Boulogne 
Calais 
Dunkirk . 
Arras 
Ostend . 
Valenciennes . 
Ghent 
Mons 
The Hague 
Brussels . . . . 
Antwerp.... 
j Rotterdam. 
Leyden .... 
\Ialines 
imsterdam 
i Jtrecht 
| liege 
Irnheim .. 
' lix La Cbapelle 
] 'ologne 
Iberhausen 
i mden .... 
I iiinster 
| ’arburg 
lensburg 
j issel 
1 Ada 
I ittingen . . . 
tona 
*1 
; hweinfurt 
itba 
Imbacli . 
xhtenfels. 
die 
unsiedel . 
stock 
anzenbad 
P zi g 
lsbad. . 
sdam 
esch .. 
lin 
notau 
>den . 
Declination. 
Inclination. 
Force in British units. 
Lat. N. 
Lon 
g. E. 
Date. 
Ob- 
served. 
Correction 
Ob- 
served. 
Cor. to 
Ob- 
served. 
Cor. to 
to Epoch 
1842 5. 
Corrected. 
Epocli 
1842-5. 
Corrected. 
Epoch 
1842-5. 
Corrected. 
o / 
O 
/ 
o t 
O / 
O 
O 
/ 
, 
O 
50 42 
0 
35 
18400 
68 
29 
68-5 
1017 
1017 
50 22 
1 
35 
1869-0 
1 8 03 xv. 
3 21 xv. 
21-4 xv. 
66 
47 
+ 72 
68-0 
10 13 
10 13 
50 39 
1 
36 
1 8560 
67 
31 
+34 
681 
50 55 
1 
37 
1 869 0 
18 13 xv. 
3 21 xv. 
21-6 xv. 
67 
07 
+ 72 
68-3 
1015 
10-15 
50 58 
1 
5) 
1 856 0 
67 
59 
+34 
68-6 
51 02 
2 
"f 
1833 5 
18580 
20 07 w. 
1 56 xv. 
22-1 xv. J 
O 
22-1 
w. 
68 
67 
55 
56 
-24 
+39 
68-51 
68 6/ 
O 
68-6 
10-36 
1 0-32 
-02 
10-36 1 
10-30/ 
10-33 
50 18 
2 
46 
1858-0 
67 
23 
+ 40 
68-1 
10-27 
-■02 
10-25 
51 14 
2 
55 
18560 
68 
03 
+34 
68-6 
50 50 
3 
16 
1856-0 
67 
40 
+34 
68-2 
50 21 
3 
31 
18560 
67 
23 
+34 
680 
51 03 
3 
43 | 
1856-0 
18580 
19 34 xv. 
1 56 xv. 
21 -5 xv. 
21-5 
w. 
67 
68 
50 
00 
+34 
+39 
68-41 
68-7/ 
68-5 
10-30 
-02 
10-28 } 
10-28 
50 30 
3 
58 
1856 0 
67 
23 
+34 
68-0 
52 04 
4 
18 
18560 

68 
19 
+34 
68 9 
50 51 
4 
22 ( 
1 838-5 
21 31 xv. 
68 
28 
-10 
68-3] 
68-2 
10-27 
10-27 ] 
10-28 
1 
1842 5 
21-5 xv. 
68 
13 
68-2/ 
10-28 
10-28/ 
51 13 
4 
24 
18560 
67 
53 
+ 34 
68-5 
51 55 
4 
-{ 
1838-5 
68 
49 
-10 
68-7] 
68-7 
1017 
10171 
10-17 
1 850*1) 
68 
12 
+ 34 
68-8 j 
J 
52 09 
4 
29 { 
1856-0 
18580 
19 15 xv. 
1 56 xv. 
21-2 xv. 
68 
68 
16 
22 
+ 34 
+39 
68-81 
690/ 
68 9 
10-33 
-•02 
1 
10-31 J 
10-31 
51 02 
4 
29 
1858 0 
19 13 xv. 
1 56 xv. 
21 2 xv. 
67 
39 
+39 
68-3 
10-28 
-•02 
10-26 
52 23 
4 
53 
1856-0 
68 
24 
+ 34 
690 
52 00 
5 
07 
1858 0 
1 8 48 xv. 
1 56 xv. 
207 xv. 
68 
12 
+39 
68 9 
10-32 
- 02 
10-30 
50 37 
5 
35 
1839-0 
68 
05 
- 9 
67 9 
10-35 
10-35 
52 00 
5 
50 
18380 
68 
45 
-11 
68 6 
50 47 
6 
04 
18580 
19 15 xv. 
1 56 xv. 
21-2 xv. 
67 
27 
+39 
68 1 
10-26 
-02 
1024 
50 57 
6 
46 
18380 
67 
54 
-11 
67-7 
10 05 
10 05 
51 29 
6 
51 
1858-0 
17 56 xv. 
1 56 xv. 
19 9 xv. 
67 
39 
+39 
68-3 
10-23 
-•02 
10-21 
( 
1838-5 
' 
67 
51 
-10 
67-7 1 
10-20 
10-20 1 
50 44 
7 
06 •! 
1858-0 
17 38 xv. 
1 56 xv. 
19 6 xv. 
19-6 
w. 
67 
12 
+39 
67-9 l 
67-8 
10-18 
-•02 
10 16 
1018 
1 
1859 5 
I 
67 
09 
+42 
67-9 J 
J 
53 22 
7 
12 
1858-0 
1 8 09 xv. 
1 56 xx'. 
20- 1 xv. 
68 
52 
+39 
69-5 
10-38 
-•02 
10-36 
51 58 
7 
38 
18580 
1 7 29 xv. 
1 56 xv. 
19 4 xv. 
67 
53 
+39 
68-5 
10-29 
-02 
10 27 
50 09 
8 
46 
1850-0 
1 7 40 xv. 
0 56 xv. 
1 8-6 xv. 
67 
18 
+ 19 
67-6 
10-23 
10-23 
54 47 
9 
26 
18580 
69 
24 
+39 
700 
j 10-38 
-02 
10-36 
51 20 
9 
30 
18580 
16 23 xv. 
1 56 xv. 
18 3 xv. 
67 
11 
+ 39 
67'8 
10-22 
-•02 
10-20 
50 34 
9 
30 
18500 
17 16 xv. 
0 56 xv. 
18 2 xv. 
68 
13 
+ 19 
68-5 
51 32 
9 
56 
1842-5 
17 52 xv. 
17 9 xv. 
67 
40 
67-7 
53 3»i 
9 
57 
1839-5 
69 
04 
- 7 
689 
10-39 
10-39 
10 
09 
1840 0 
69 
66 
28 
32 
- 6 
+ 19 
69-4 
66-9 
! 1041 
10-41 
50 03 
10 
14 
18500 
16 51 xv. 
0 56 xv. 
1 7'8 xv. 
1017 
-•02 
10 15 
50 57 
10 
44 
18580 
15 38 xv. 
1 56 xv. 
17-6 xv. 
66 
50 
+39 
67-5 
1019 
-02 
1017 
50 06 
11 
29 
18500 
16 15 xv. 
0 56 xv. 
17 "2 xv. 
66 
25 
+ 19 
667 
10 11 
-01 
1010 
50 09 
11 
31 
18500 
16 30 xv. 
0 56 xv. 
17-4 xv. 
66 
29 
+ 19 
66-8 
1014 
-•01 
1013 
51 30 
11 
58 
1867-5 
66 
34 
+63 
67-6 
50 02 
12 
01 
1850-0 
15 53 xv. 
0 56 xv. 
16 8 xv. 
66 
27 
+ 19 
66-8 
1017 
-01 
10-16 
54 05 
12 
09 
1858-0 
15 17 xv. 
1 56 xv. 
17-2 xv. 
68 
39 
+39 
693 
10 39 
- 02 
10-37 
50 07 
12 
20 
1 8500 
66 
13 
+ 19 
66 5 
10-08 
-•01 
10 07 
f 
1825-0 
1 
68 
08 
-44 
67-41 
1 
51 20 
12 
22 
1850 0 
15 40 xv. 
0 56 xv. 
1 6 6 xv. 
16-7 xv 
67 
05 
+ 19 
67-4 | 
67-4 
10-15 
1 
1013 [ 
10 13 
1858 0 
14 45 xv. 
1 56 xv. 
16-7 xv. 
66 
46 
+39 
67-4 r 
-•02 
l 
1867-5 
66 
16 
+ 63 
67-4 J 
1 
50 14 
12 
53 | 
1838-5 
1850-0 
15 36 xv. 
0 50 xv. 
16-4 xv. 
16-4 xv. 
66 
66 
44 
10 
-12 
+ 17 
66-5 1 
66-5 ) 
665 
10-12 
10-08 
10 121 
10 08 | 
10-10 
52 23 
13 
05 
1828-0 
17 33 xv. 
1 04 e. 
16 5 xv. 
68 
31 
-48 
67-7 
50 06 
13 
16 
1 8500 
15 24 xv. 
0 50 xv. 
1 6-2 xv. 
65 
51 
+ 17 
66-1 
9-99 
9-99 
52 32 
13 
24 
1842-5 
16 12 xv. 
16-2 xv. 
67 
53 
679 
1003 
10-03 
50 27 
13 
25 
18500 
15 14 xv. 
0 50 xv. 
16-1 xv. 
66 
10 
+ 17 
66-5 
9-98 
9-98 
51 03 
13 
44 | 
1826-5 
1867-5 
67 
66 
41 
15 
-32 
+50 
67-21 
67-1 f 
67 1 
1038 
10-38/ 
10-38 
1 
Observers. 
Ross. 
Perry. 
Mahmoud. 
Perry. 
Mahmoud. 
Blosseville. 
Lamont. 
Lamont. 
Mahmoud. 
Mahmoud. 
Mahmoud. 
Mahmoud. 
Lamont. 
Mahmoud. 
Mahmoud. 
Forbes. 
Quetelet. 
Mahmoud. 
Fox. 
Mahmoud. 
Mahmoud. 
Lamont. 
Lamont. 
Mahmoud. 
Lamont. 
Quetelet. 
Fox. 
Lamont. 
Fox. 
Lamont. 
, Forbes. 
Lamont. 
Fox. 
Lamont. 
Lamont. 
Lamont. 
Lamont. 
Lamont. 
Lamont. 
Observatory. 
Han steen. 
Hansteen. 
Lamont. 
Lamont. 
Lamont. 
Lamont. 
Kamtz, L. F. 
Lamont. 
Lamont. 
Kreil. 
Keilhau. 
D’ Arrest. 
Lamont. 
Ivamtz, L. F. 
Forbes. 
Kreil. 
Erman. 
Kreil. 
Erman. 
Kreil. 
Keilhau. 
Kamtz, L. F 
3 h 2 
