Magnetic Declination, 1845. 
5 
TABLE VII. — List of Seven Days in each Month of 1845 upon which the Magnetic Declination 
was least irregular. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
3 
8 
4 
5 
2 
3 
5 
11 
6 
6 
6 
1 
4 
11 
5 
10 
3 
6 
14 
12 
10 
13 
8 
9 
6 
12 
6 . 
12 
7 
12 
15 
13 
15 
14 
12 
11 
8 
14 
8 
17 
9 
13 
16 
16 
16 
16 
13 
19 
16 
15 
12 
23 
26 
18 
23 
19 
22 
23 
14 
24 
18 
18 
13 
24 
27 
19 
26 
20 
23 
24 
15 
25 
31 
19 
31 
26 
28 
27 
30 
21 
24 
30 
20 
27 
TABLE VIII. — Hourly Means of Magnetic Declination for the Seven Days least disturbed in each 
Month of 1845, corrected so that the Mean of each Seven Days equals the Monthly Mean. 
Mak. 
M. T. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
h. 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
12 
13-71 
12-63 
12-41 
09-85 
11-15 
10-61 
10-04 
09-80 
09-94 
09-71 
09-08 
07-62 
10-55 
13 
13-36 
13-79 
12-05 
10-21 
10-93 
10-89 
09-62 
09-13 
09-43 
09-48 
09-02 
07-91 
10-48 
14 
13-69 
13-72 
11-65 
10-08 
10-70 
10-14 
0905 
09-52 
08-83 
09-74 
09-05 
08-15 
10-36 
15 
13-38 
13-26 
11-28 
09-42 
10-28 
08-96 
08-76 
08-98 
07-80 
1005 
09-30 
08-22 
09-97 
16 
13-5] 
12-79 
11-33 
08-99 
09-50 
07-59 
07-81 
08-33 
08-07 
09-67 
09-12 
07-94 
09-55 
17 
13-38 
12-76 
11-31 
07-96 
08-05 
06-26 
06-22 
06-73 
07-41 
09-51 
09-06 
08-07 
08-89 
18 
13-22 
12-80 
11-24 
07-66 
06-91 
05-50 
05-89 
05-83 
06-93 
09-47 
08-77 
07-74 
08-50 
19 
13-25 
12-94 
11-26 
06-26 
06-13 
05-39 
06-14 
05-60 
07-08 
08-91 
08-46 
07-58 
08-25 
20 
13-68 
13-19 
11-14 
06-26 
07-24 
06-05 
07-30 
05-73 
07-80 
08-64 
08-46 
07-63 
08-59 
21 
14-36 
13-77 
11-67 
07-51 
09-27 
08-11 
09-15 
08-33 
09-44 
09-32 
09-09 
07-32 
09-78 
22 
15-32 
14-83 
12-85 
10-67 
12-23 
11-54 
11-50 
12-09 
12-01 
12-19 
10-87 
08-36 
12-04 
23 
16-42 
16-20 
15-34 
14-53 
15-11 
15-37 
14-50 
15-15 
15-19 
14-36 
12-35 
09-92 
14-54 
0 
15-88 
16-95 
17-90 
18-02 
16-46 
17-50 
16-84 
17-46 
16-94 
15-74 
12-44 
11-05 
16-10 
1 
1613 
17-00 
18-32 
19-62 
16-87 
17-70 
17-65 
18-23 
16-71 
15-75 
12-28 
11-19 
16-45 
2 
15-11 
16-21 
17-81 
18-25 
15-71 
17-37 
16-37 
17-22 
14-54 
1407 
11-20 
10-59 
15-37 
3 
14-98 
14-98 
16-18 
16-52 
14-39 
16-26 
15-22 
14-74 
12-42 
12-60 
10-26 
09-43 
14-00 
4 
14-46 
14-13 
14-05 
14-89 
12-84 
14-26 
14-15 
12-23 
10-98 
10-80 
09-97 
08-33 
12-59 
5 
14-05 
13-83 
13-05 
13-16 
11-63 
12-21 
13-51 
10-28 
10-23 
10-70 
09-48 
08-24 
11-70 
6 
13-78 
13-43 
13-26 
11-69 
10-99 
11-56 
12-37 
09-52 
09-76 
10-06 
09-31 
08-28 
11-17 
7 
13-73 
13-31 
12-77 
10-90 
10-94 
11-55 
11-75 
09-95 
09-75 
09-57 
08-76 
08-05 
10-92 
8 
13-46 
12-93 
12-39 
09-74 
11-28 
11-26 
11-51 
10-31 
09-97 
09-70 
08-56 
07-43 
10-71 
9 
13-05 
12-77 
11-76 
09-93 
11-39 
11-22 
10-92 
10-41 
09-00 
09-55 
07-94 
06-81 
10-40 
10 
13-22 
12-20 
12-33 
10-14 
11-25 
11-25 
10-26 
10-29 
09-49 
09-28 
08-42 
07-06 
10-43 
11 
13-05 
12-78 
12-14 
09-96 
11-20 
10-67 
09-94 
09-66 
1 
09-18 
09-44 
08-42 
07-25 
10-31 
MAG. AND MET. OBS. 1845 AND 1846. 
B 
