24 
Results of Makerstoun Observations, 1845. 
TABLE XLIII. — Mean Difference of a Single Observation of the Balance Magnetometer from the 
Monthly Mean at the corresponding hour, for each Hour in each Month in 1845. 
M. T. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
h. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Dir. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
Mic. Div. 
12 
25-3 
26-5 
23-4 
49-4 
225 
9-2 
14-1 
24-3 
18-8 
18-1 
131 
18-1 
21-9 
13 
23-3 
24-3 
30-1 
36-1 
35-9 
9-5 
16-0 
24-5 
25-7 
18-3 
141 
15-8 
22-8 
14 
36-3 
22-6 
31-5 
44-2 
36-8 
9-7 
20-8 
25-5 
25-0 
191 
17-7 
15-2 
25-4 
15 
30-3 
19-5 
32-8 
25-9 
42-1 
10-0 
23-3 
28-2 
28-8 
17-4 
17-8 
16-8 
24-4 
16 
26-5 
18-2 
24-0 
31-5 
27-7 
10-6 
22- 1 
25-1 
27-8 
15-8 
16-5 
16-1 
21-8 
17 
21-8 
18-4 
17-9 
18-7 
20-7 
11-7 
22-0 
20-7 
290 
13-9 
16-3 
17-8 
19-1 
18 
19-7 
17-7 
11-2 
10-9 
16-7 
11-3 
18-4 
16-7 
27-1 
12-5 
16-9 
17-3 
16-4 
19 
18-3 
15-1 
8-4 
12-3 
15-2 
11-4 
15-2 
15-7 
22-1 
11-6 
16-7 
161 
14-8 
20 
18-1 
13-4 
7-4 
12-3 
13-7 
11-7 
12-7 
14-5 
22-2 
9-9 
16-5 
160 
14-0 
21 
17-0 
111 
7-2 
12-5 
15-5 
10-9 
11-6 
13-8 
18-1 
10-9 
15-4 
15-8 
13-3 
22 
14-5 
10-8 
7-4 
12-4 
15-1 
10-4 
10-4 
11-5 
150 
10-8 
15-1 
15-7 
12-4 
23 
11-2 
10-7 
7-1 
9-7 
13-7 
10-1 
9-5 
10-5 
130 
9-4 
13-4 
15-4 
IM 
0 
11-4 
10-7 
7-5 
9-8 
13-8 
9-2 
9-8 
10-4 
13-3 
10-1 
12-4 
15-7 
11-2 
1 
11-8 
10-9 
7-7 
11-6 
13-9 
10-0 
9-4 
11-9 
19-9 
10-5 
13-1 
15-6 
12-2 
2 
12-7 
11-6 
7-2 
10-8 
13-3 
11-6 
IM 
12-6 
23-3 
110 
14-8 
16-5 
13-0 
3 
14-9 
15-8 
8-8 
15-0 
13-2 
13-0 
10-9 
12-6 
23-3 
13-5 
18-2 
28-0 
15-6 
4 
14-9 
14-3 
12-4 
13-6 
12-7 
15-7 
12-9 
16-6 
21-8 
171 
20-9 
31-8 
17-1 
5 
15-1 
19-6 
28-1 
14-6 
13-4 
16-0 
13-6 
18-7 
31-5 
18-2 
22-5 
39-4 
20-9 
6 
16-8 
17-1 
24-8 
15-7 
14-0 
14-8 
131 
14-8 
19-4 
16-3 
26-0 
39-7 
! 19-4 
7 
17-1 
10-5 
16-6 
12-9 
11-3 
15-1 
12-2 
10-8 
17-2 
15-3 
23-0 
35-6 
16-0 
8 
16-5 
9-7 
12-6 
9-3 
9-1 
13-9 
10-5 
71 
14-5 
13-9 
19-9 
21-6 
13-2 
9 
15-5 
13 7 
IM 
6-6 
7-8 
11-9 
10-4 
18-3 
11-2 
12-2 
16-1 
21-9 
131 
10 
24-2 
14-3 
14-2 
IM 
7-9 
10-9 
9-8 
13-5 
16-0 
10-5 
13-4 
18-4 
13-7 
" 
26-7 
19-3 
14-0 
13-9 
11-5 
11-7 
9-2 
23-5 
19-6 
17-8 
13-3 
18-4 
16-6 
Variations of Magnetic Dip. 
TABLE XLIV. — Variations of Magnetic Dip, with reference to the Moon's Age, Declination, and 
Distance from the Earth, as deduced from Tables XIX. and XXXII. 
Moon's 
Age. 
Variations 
of 
Magnetic 
Dip. 
Moon's 
Age. 
Variations 
of 
Magnetic 
Dip. 
After 
Moon 
farthest 
North. 
Variations 
of 
Magnetic 
Dip. 
After 
Ikfoou 
farthest 
North. 
Variations 
of 
Magnetic 
Dip. 
Before 
and 
after 
Perigee. 
Variations 
of 
Magnetic 
Dip. 
Before 
and 
after 
Apogee. 
Variations 
of 
Slacnetic 
Dip. 
Day. 
Day. 
Day. 
Day. 
Day. 
Day. 
15 
0-215 
0 
0-144 
0 
0-114 
14 
0-056 
7 
0-2S7 
0-106 
16 
0-219 
1 
0-228 
1 
0-110 
15 
0-010 
6 
0-166 
\ 
0-270 
17 
0-219 
2 
0-402 
2 
0-068 
16 
0-032 
5 
0-235 
0-0S7 
18 
0-313 
3 
0-246 
3 
0-178 
17 
0-300 
4 
0-160 
4 
0-100 
19 
0-318 
4 
0-175 
4 
0-139 
18 
0-594 
3 
0-287 
3 
0-192 
20 
0-295 
5 
0-413 
5 
0-265 
19 
0-267 
2 
0-231 
2 
0-076 
21 
0-337 
6 
0-260 
6 
0-318 
20 
0-187 
1 
0069 
1 
0-171 
22 
0-254 
7 
0-229 
7 
0-379 
21 
0-191 
P 
0-000 
A 
0-059 
23 
0-171 
8 
0-451 
8 
0-342 
22 
0-128 
1 
0-100 
1 
0-15 1 
24 
0-259 
9 
0-189 
9 
0-263 
23 
0-104 
2 
0-445 
2 
0-2ti7 
25 
0-228 
10 
0-091 
10 
0-234 
24 
0-091 
3 
0-567 
3 
0-1 (Ui 
26 
0-000 
11 
0-103 
11 
0-162 
25 
0-036 
4 
0-2S8 
4 
0-069 
27 
0-028 
12 
0-110 
12 
0-209 
26 
0-000 
5 
0-167 
5 
0-296 
28 
0-018 
13 
0-092 
13 
0-218 
27 
0-056 
6 
0-199 
6 
0-215 
29 
0-052 
14 
0-104 
7 
0-ISS 
7 
0-192 
