684 SIR Q. B. AIRY” OX RESULTS DEDUCED FROM THE MEASURES 
Monthly Means of Daily Range of Horizontal Magnetic Force at 
Mean Daily Range of Horizontal Force in the Direction of Astronomical Meridian. 
Range of 
Meridian 
Force. 
In Gottingen Mean Solar 
Time. 
Approximate Hour of 
Month. 
Range of 
Meridian 
Force. 
In Gottingen Mean Solar 
Time. 
Approximate Hour of 
Minimum 
Meridian 
Force. 
Maximum 
Meridian 
Force. 
Minimum 
Meridian 
Force. 
Maximum 
Meridian 
Force. 
h. 
m. 
h. 
m. 
h. m. 
h. 
m. 
•0032 
23 
50 
8 
0 
•0033 
23 
50 
8 
0 
December . . 
•0012 
2 0 
18 
0 
January . . 
•0009 
23 50 
20 
0 
•0022 
0 
0 
12 
0 
•0028 
0 
0 
9 
0 
December . . 
•0010 
0 0 
18 
0 
January . . 
•0014 
0 0 
18 
0 
•0027 
23 
20 
8 
30 
•0028 
23 
50 
8 
0 
December . . 
•0011 
2 0 
12 
0 
! January . . 
•0013 
0 0 
7 
30 
•0029 
23 
20 
8 
0 
•0030 
23 
40 
8 
0 
December . . 
•0016 
0 10 
6 
0 
January . . 
•0010 
0 0 
6 
0 
•0025 
22 
40 
8 
0 
•0022 
23 
30 
8 
0 
December . . 
•0015 
0 0 
9 
0 
J anuary . . 
•0011 
0 20 
19 
0 
•0030 
22 
40 
7 
50 
•0033 
23 
10 
7 
50 
December . . 
•0016 
o -o 
8 
10 
January . . 
Obser 
vations inter 
rupted. 
•0026 
23 
40 
8 
0 
•0032 
23 
30 
8 
0 
December. . 
•0015 
0 40 
20 
0 
January . . 
•0023 
0 10 
18 
30 
•0033 
0 
30 
8 
0 
‘0045 
0 
0 
8 
0 
December . . 
•0018 
0 30 
19 
0 
January . . 
•0019 
0 0 
19 
0 
•0035 
1 
0 
7 
10 
•0036 
0 
0 
8 
0 
December . . 
•0013 
0 0 
19 
0 
January . . 
•0015 
0 10 
18 
0 
•0028 
0 
0 
19 
0 
•0026 
23 
50 
8 
0 
. 
December . . 
•0019 
23 40 
19 
0 
January . . 
•0021 
1 0 
19 
0 
•0027 
0 
0 
8 
0 
•0026 
0 
0 
9 
0 
December . . 
•0015 
4 50 
18 
0 
January . . 
•0021 
1 10 
20 
0 
•0029 
0 
15 
18 
10 
•0028 
1 
0 
17 
40 
December . . 
•0017 
2 0 
18 
30 
Year. 
1841 
1842- 
1843- 
1844 < 
1845- 
1846 ^ 
1847- 
1848 - 
1849- 
1850 - 
1851- 
1852- 
Month. 
June , 
July . 
June , 
July 
June - 
July 
June 
July 
June 
July 
June 
July 
June 
July 
June 
July 
June 
July 
June , 
July 
June , 
July 
June 
July 
Gottingen Mean Solai Time is greater by 40 m than 
