OF TERRESTRIAL MAGNETIC FORCE IN THE HORIZONTAL PLANE, 
080 
expressed as factors of the Mean Horizontal Magnetic Force (continued). 
Mean Daily Range of Horizontal Force in the Direction Transversal to the Astronomical Meridian. 
Month, 
Range of 
Transversal 
Force. 
|| 
In Greenwich Mean Solar 
Time. 
Approximate Hour of 
Maximum 
Easterly 
Force. 
Maximum 
Westerly j 
Force. 1 
h. 
m. 
b. 
in. 
June. . . 
•0032 
20 
0 
2 
0 
July . . . 
•0028 
18 
50 
2 
0 
June . . . 
•0029 
19 
30 
2 
30 
July . . . 
•0029 
19 
30 
2 
10 
June . . . 
•0027 
20 
0 
i 
40 
July . . . 
•0026 
20 
0 
2 
0 j 
June . . . 
•0029 
20 
0 
2 
0 
July . . . 
*0030 
19 
30 
2 
0 
June. . . 
•0042 
19 
50 
2 
10 
July , . . 
•0038 
19 
30 
2 
30 
June . . . 
•0046 
20 
10 
2 
10 
July . . . 
•0047 
20 
0 
2 
10 
June. . . 
•0046 
20 
10 
2 
20 
July . . . 
•0043 
20 
0 
2 
30 
June . . . 
•00 4 
20 
0 
2 
0 
July . . . 
•0038 
20 
0 
2 
10 
June . . . 
•0032 
20 
30 
2 
50 
July . . . 
•0036 
20 
0 
2 
20 
June. . . 
•0032 
19 
50 
2 
0 
July . . . 
•0033 
20 
20 
2 
0 
June . . . 
■0027 
19 
40 
2 
0 
July . . . 
•0024 
20 
0 
2 
10 
June . . . 
•0029 
19 
30 
2 
20 
July . . . 
•0030 
19 
20 
2 
0 
Month. 
January 
December . 
January 
December . 
January 
December . 
J anuary 
December . 
January 
December . 
January 
December . 
January 
December . 
January 
December . 
January 
December . 
January 
December . 
January 
December . 
January 
December . 
Range of 
Transversal 
Force. 
Obser 
•0015 
•0019 
•0013 
•0013 
•0012 
•0016 
•0017 
•0018 
•0015 
•0020 
•0017 
•0021 
•0019 
•0023 
•0022 
•0026 
•0017 
•0021 
•0012 
•0014 
•0012 
•0014 
•0012 
In Greenwich Mean Solar 
Time. 
Approximate Hour of 
Maximum 
Easterly 
Force. 
Maximum 
Westerly 
Force. 
h. 
m. 
h. 
m. 
vations 
inter 
rupted. 
L 
10 
so 
1 
0 i 
10 
40 
1 
0 1 
9 
0 
1 
0 J 
10 
20 
1 
0 1 
9 
0 
1 
. J 
10 
o 
1 
0 1 
10 
0 
1 
30 J 
12 
10 
2 
° 1 
10 
30 
1 
0 I 
10 
20 
1 
0 1 
10 
40 
2 
» J 
11 
10 
2 
0 1 
12 
0 
1 
30 J 
11 
10 
2 
° 1 
11 
0 
1 
0 V 
10 
30 
2 
0 1 
11 
0 
1 
. J 
11 
0 
1 
0 1 
10 
30 
1 
o i 
10 
50 
1 
0 1 
10 
0 
1 
. J 
10 
0 
1 
0 1 
9 
30 
1 
» J 
Y ear. 
■ 1865 
■ 1866 
1867 
1868 
■ 1869 
1870 
■1871 
1872 
■1873 
■1874 
■1875 
■1876 
