76 
Observations of Magnetic Dip, January 2 — April 18. 1843. 
Gbttingen 
Mean Time, 
Middle of 
Observation. 
d. b. 111. 
Jan. 2 21 0 
Jan. 6 6 0 
Jan. 9 22 45 
Jan. 13 7 5 
Jan. 16 22 45 
Jan. 20 3 5 
Jan. 23 23 5 
Jan. 28 3 20 
Jan. 30 22 35 
Feb. 3 3 35 
Feb. 6 23 0 
Feb. 10 3 10 
Feb. 13 22 45 
Feb. 17 3 35 
Feb. 20 22 40 
Feb. 27 22 32 
Mar. 3 5 30 
Mar. 10 3 30 
Mar. 13 22 35 
Mar. 17 3 20 
Mar. 20 23 0 
Mar. 24 3 30 
Mar. 31 3 10 
Apr. 3 23 0 
Apr. 7 3 0 
Apr. 10 23 15 
Apr. 14 3 20 
Apr. IS 0 40 
Dura- 
tion 
of 
Obser- 
vation. 
58 
50 
25 
45 
65 
43 
70 
57 
25 
35 
50 
50 
40 
28 
48 
35 
40 
60 
30 
35 
65 
53 
45 
60 
40 
45 
45 
Needle. 
Num- 
ber. 
Tem- 
pera- 
ture. 
33 
59 
47 
52 
53 
58 
56 
57 
57 
53 
50 
55 
45 
55 
47 
46 
54 
52 
50 
47 
46 
46 
54 
46 
50 
30 
53 
53 
End 
dip- 
ping. 
A 
B 
B 
A 
U 
B 
A 
A 
B 
u 
A 
15 
1! 
A 
A 
B 
B 
A 
| A 
\1 
A 
15 
B 
A 
A 
B 
B 
A 
A 
IS 
B 
A 
A 
B 
B 
A 
A 
B 
B 
A 
i A 
1b 
B 
A 
A 
B 
(B 
U 
/B 
u 
Face of Circle E. 
Face of Circle W. 
Mark on Needle 
Mark on Needle 
: 
E. 
W. 
E. 
W. 
69 
52-0 
73 
36-5 
69 
32-5 
73 
25-5 
0 
71 
72 
57-0 
\j *j 
27-0 
72 
27.5 
69 
1 7-5 
71 
73 
1-0 
u <y 
28-0 
73 
0-0 
fiQ 
19-0 
71 
69 
42-0 
73 
37-0+ 
69 
25-0 
73 
23.5 
71 
69 
52-0 
73 
37-0 
69 
28-0 
73 
26-5 
71 
73 
0-0 
69 
28-0 
72 
44-0 
69 
13-0 
71 
72 
58-0 
69 
29-0 
72 
50-0 
69 
15-5 
71 
69 
46-0 
73 
43-0 
69 
29-0 
73 
18-5 
71 
69 
51-0 
73 
36-5 
69 
26-0 
73 
12-0 
71 
72 
59-5 
69 
36-0 
72 
43-0 
69 
18-5 
71 
73 
7-5 
69 
39.5 
73 
45-0 
69 
15-0 
71 
70 
13-5 
73 
8-0 
69 
54-0 
72 
55.5 
71 
70 
14-5 
73 
13-0 
69 
51-0 
72 
55-5 
71 
72 
56-5 
69 
44.5 
72 
36-0 
69 
26-0 
71 
72 
58-5 
69 
40-0 
72 
40-0 
69 
26-5 
71 
70 
9-0 
73 
16-5 
69 
44-0 
72 
57-0 
71 
70 
0-0 
73 
16-0 
69 
38-5 
73 
30-5 
71 
73 
1-0 
69 
30-5 
72 
46-5 
69 
11-0 
71 
73 
7-0 
69 
17-5 
72 
51-0 
69 
14-5 
71 
70 
2-5 
73 
25-5 
69 
36-0 
73 
22-0 
71 
70 
3.5 
73 
34.5 
69 
37-0 
73 
20-0t 
71 
72 
58-5 
69 
27.5 
72 
39-0 
69 
24-0 
71 
72 
56-0 
69 
47.5 
72 
35.5 
69 
11-0 
71 
70 
15-5 
73 
14-0 
69 
52-5 
72 
52-0 
71 
70 
16-0 
73 
9-0 
69 
49-0 
72 
58-0 
71 
73 
8-0 
69 
41-0 
72 
47.5 
69 
10-Of 
71 
73 
7.5 
69 
27-0 
72 
49-0 
69 
11-0 
71 
70 
8-5 
73 
23.5 
69 
48-0 
73 
11-0 
71 
70 
15-0 
73 
23-0 
69 
44-0 
73 
5-0 
71 
72 
59.5 
69 
46. 5 
72 
38-0 
69 
30-5 
71 
72 
56-0 
69 
46-0 
72 
31-5 
69 
25-5 
71 
70 
25 
73 
27-0 
69 
33-0 
73 
16-0 
71 
70 
2-0 
73 
22-0 
69 
32-5 
73 
6-5 
71 
73 
10-0 
69 
36-5 
72 
46-0 
69 
12-5 
71 
73 
6-5 
69 
35-0 
72 
49-0 
69 
19-0 
71 
70 
19-0 
73 
I4.5 
69 
47.5 
72 
58-0 
71 
70 
15-0 
73 
18-0 
69 
46-0 
72 
55-5 
71 
73 
2-0 
69 
40-0 
72 
31-0 
69 
13-5 
71 
73 
0-0 
69 
44.5 
72 
39.5 
69 
15-0 
71 
70 
4.5 
73 
28-0 
69 
32-5 
73 
60 
71 
70 
4-0 
73 
27.5 
69 
36-5 
73 
6-5 
71 
73 
3-0 
69 
45-0 
72 
37-0 
69 
22-0 
71 
73 
2-5 
69 
44.5 
72 
35.5 
69 
12-5 
71 
70 
12-5 
73 
21-5 
69 
43-5 
73 
5-0 
71 
70 
11-5 
73 
22-0 
69 
41-0 
73 
8-0 
71 
73 
0-5 
69 
45.5 
72 
30-0 
69 
29-0 
71 
72 
57-0 
69 
46-0 
72 
31-0 
69 
25-5 
71 
70 
7-5 
73 
19-0 
69 
46-5 
73 
3-5 
71 
70 
11-5 
73 
20-0 
69 
47-5 
73 
4-0 
71 
72 
59-5 
69 
440 
72 
33-5 
69 
22-0 
71 
72 
59-5 
69 
43-0 
72 
32-0 
69 
20-0 
71 
70 
9-0 
73 
22-0 
69 
45-0 
73 
5-0 
71 
70 
9-0 
73 
26-5 
69 
40-0 
73 
3-5 
71 
73 
4-5 
69 
44-0 
72 
3S-5t 
69 
17-5 
71 
73 
7-0 
69 
39-5 
72 
39-5 
69 
12-0 
71 
70 
100 
73 
31-5 
69 
31-0 
73 
4-0 
71 
Mean. 
36-62 
225 
12- 00 
31-87 
35- 87 
6- 25 
8- 12 
34-12 
31- 37 
9- 25 
11-75 
32- 75 
33- 50 
10- 75 
11- 25) 
31- 62/ 
36- 25) 
7- 25 f 
7-50 
36- 50 
38-75 
7-25 
7- 50 
33-50 
33- 00 
11-62 
8- 62 
37- 75 
36-751 
13- 62/ 
9- 75) 
34- 62/ 
30-75) 
11- 25J 
12- 37 
34- 75 
33- 62 
6-62 
9-75 
32- 75 
33- 62/ 
11-75/ 
8- 75) 
35- 62/ 
35-62/ 
11-25/ 
9- S7/ 
34- 12 I 
35- 75/ 
9-75| 
S-62/ 
35-25| 
34- 75/ 
11-121 
9-50/ 
34-12/ 
A. dipping 
Minus 
B. dipping 
+ 34-37 
+ 19-87 
+ 29-62 
+ 26-00 
+ 22-12 
+ 21-00 
+ 22-75 
+ 20-37 
+ 29-00 
+ 29-00 
+ 31-50 
+ 26-00 
+ 21-38 
+ 29-13 
+ 23-13 
+ 24-87 
+ 19-50 
+ 22-38 
+ 27-00 
+ 23-00 
+ 21-87 
+ 26-87 
+ 24-37 
+ 24-25 
+ 26-00 
+ 26-63 
+ 23-63 
+ 24-62 
Observed 
Dip. 
71 19-44 
71 21-94 
71 21-06 
71 21-12 
71 20-31 
71 22-25 
71 22-12 
71 21-44 
71 21-75 
71 22-00 
71 23-00 
71 20-50 
71 22-31 
71 23-19 
71 25-19 
71 22-19 
71 21-00 
71 23-56 
71 20-12* 
71 21-25* 
71 22-69 
71 22-19 
71 23-44 
71 22-00 
71 22-75 
71 21-94 
71 22-94 
71 21-S1* 
* Observations considered good. 
t Observations considered bad or doubtful. 
.Tan. 16 d 22''. In changing the polos of the needle the wrong end was at first tuken, so that A. north was strengthened : the poles were after 
wards reversed. 
