VERTICAL COMPONENT OF MAGNETIC Force, 1845. 
23 
TABLE XLI.—Mean Difference of a Single Observation of the Balance Magnetometer from the 
Monthly Mean at the corresponding hour, for each Civil Day and Week in 1845. 
Civil 
Day. 
29-7 
WOOTMH A PwWNwe 
V sommes f 
= 
ra 
— 
Feb. March. April May. June July Aug. Sept. Oct. Nov. Dec. 
Mic. Diy. | Mic. Diy. | Mic. Div. | Mic. Div. | Mic. Div. | Mie. Dlv. | Mic. Div. | Mic. Div. | Mic. Diy. | Mic. Diy. | Mie. Diy. 
14.4 15-2 12-9 65-6 [14-8] 20-4 23-7 14-7 18-3 14-6 8-3 
[19-0] | [12-2] 8-7 13-8 71 17-1 31-0 30-2 5-6 [19-4] 4:8 
17-2 13-8 15-7 11-4 8-9 11-0 [16-6] 40-2 16-7 8-4 91-9 
11-7 13.4 13-1 [26-8] 23-2 14-3 13-2 30-8 8-5 22-8 41-4 
37-8 13-5 16-9 23-3 14-1 14-2 11-2 21-7 [11-7] 47-5 38-8 
21-6 14-5 [14-1] 22-7 4-6 [11-8] 79 30-9 21-3 24-8 | 26-1 
11-7 14.2 10-3 24-0 6-7 10-9 6:3 [20-7] 11-8 11-2 | [25-1] 
10-3 10-6 9-2 27-0 [10-2] 9-6 12-2 20-3 6-1 15-7 | 22-0 
[11-2] [ 12-3] 19-6 13-6 16-2 10-6 12-9 9-8 14-9 [12-7] 14-2 
5-5 8-6 10-6 10-8 12-3 12-8 [13-1] 10-7 29.4 6-2 8-4 
i ' : 2 , 16-9 12-5 4 a A 
TABLE XLII.—Mean Difference of a Single Observation of the Balance Magnetometer from the 
Monthly Mean at the corresponding hour, with reference to the Moon’s Age and Declination, 
for 1845. 
Moon’s Mean 
Age. | Difference, 
Day. Mie. Diy. 
15 13-3 
16 14-5 
17 15-8 
18 15-4 
19 14.9 
20 14-6 
21 20-2 
22 14.7 
23 16-0 
24 18-3 
25 20-0 
26 15.4 
27 17-9 
Mean 
After 
Moon 
||farthest 
North. 
D 
CHONIAMR WW OE 
After 
Mean Moon 
Difference. | farthest 
North. 
Mic. Div. Day. 
12-5 14 
17-5 15 
14-2 16 
25-7 17 
15-4 18 
16-1 19 
14-3 20 
16-7 21 
18-7 22 
19-3 23 
21-2 24 
17-5 25 
26 
Mie. Div. 
Mean 
Difference. 
17-2 
11-4 
14-5 
29-6 
17-8 
15-2 
18-2 
13-3 
13-4 
18-5 
11-3 
13.8 
13-3 
14-3 
