IN THE LARGER MAGNETIC DISTURBANCES. 
171 
Cape of Good Hope. On the average of the year the easterly is decidedly a smaller 
disturbance than the westerly. The same fact is shown from the Hobarton observa- 
tions. At that station the easterly disturbance is smaller than the westerly in 
eleven months of the year, the average annual easterly disturbance being consider- 
ably less than the westerly. At Toronto also we find the same fact occurring ; the 
value of a disturbed easterly observation is less than a westerly on the average of 
the year ; the difference is however in this case inconsiderable, and there are several 
discrepancies in the different months. 
Next, distributing the disturbances into the several hours of their occurrence, the 
following table is obtained. The facts, besides being very remarkable when viewed 
alone, acquire so much additional interest when exhibited in contrast with the law 
which has already been shown to prevail at Toronto and Hobarton, that 1 have 
placed the corresponding tables of the ratios at Toronto and Hobarton beside those 
of St. Helena and the Cape for the sake of more convenient comparison. 
Table VII. 
Ratios of the numbers and of the aggregate values at the several hours, to the 
mean hourly numbers and values at St. Helena, Cape of Good Hope, Hobarton 
and Toronto. 
Mean time at sta- 
tion, Astronomical 
reckoning. 
St. Helena. 
Cape of Good Hope. 
Hobarton. 
Toronto. 
Numbers. 
Values. 
Numbers. 
Values. 
Numbers. 
Values. 
Numbers. 
Values. 
Day. 
18 hours. ! 
0-23 
0-24 
0-98 
1-00 
0-73 
0-68 
1-04 
1-08 
19 i 
0-44 
0-38 
1-30 
1-29 
1-01 
0-96 
1-02 
1-28 
20 ! 
0-95 
0-88 
1-97 
1-86 
1-12 
1-07 
1-06 
1-14 
21 ! 
1-58 
1-49 
2-01 
1-97 
1-05 
0-91 
1-08 
1-09 
22 
1-92 
1-94 
2-25 
2-28 
1-02 
0-85 
1-06 
0-92 
23 
2-49 
2-55 
2-12 
2-17 
1-04 
0-88 
1-01 
0-83 
Noon. 
2-70 
2-77 
1-97 
1-93 
1-04 
0-85 
0-86 
0-67 
1 
2-82 
2-92 
1-57 
1-51 
1-11 
0-90 
0-72 
0-55 
2 
2-65 
2-72 
1-31 
1-22 
M4 
0-97 
0-59 
0-49 
3 
2-29 
2-27 
0-83 
0-76 
1-04 
0-91 
0-66 
0-52 
4 ! 
1-86 
1-78 
0-77 
0-69 
1-00 
0-91 
0-69 
0-58 
5 ! 
1-18 
MO 
0-52 
0-48 
0-90 
0-86 
0-69 
0-60 
Sum of ratios at \ 
day-hours. j 
21-11 
21-04 
17-60 
17-16 
12-20 
10-75 
10-48 
9-75 
Night. 
6 hours. 
0-60 
0-56 
0-63 
0-60 
1-04 
0-90 
0-77 
0-78 
7 
0-29 
0-29 
1 0-67 
0-66 
0-81 
0-86 
0-92 
0-89 
8 
0-32 
0-32 
0-71 
0-81 
0-88 
0-93 
1-11 
1-17 
9 
0-22 
0-26 
, 0-62 
0-65 
0-98 
1-17 
1-26 
1-48 
10 
0-21 
0-24 
0-59 
0-69 
1-11 
1-26 
1-27 
1-33 
11 
0-20 
0-24 
0-44 
0-53 
1-35 
1-66 
1-15 
1-15 
Midnight. 
0-22 
0-26 
1 0-45 
0-52 
1-28 
1-45 
1-21 
1-24 
13 
0-15 
0-16 
! 0-52 
0-52 
1-10 
1-12 
1-24 
1-35 
14 
0-17 
0-18 
: 0-49 
0-50 
0-99 
1-15 
1-21 
1-21 
15 
0-16 
0-15 
! 0-44 
0-42 
1-01 
1-08 
1-15 
M2 
16 
0-15 
0-17 
0-51 
0-49 
0-95 
0-94 
1-22 
1-25 
17 
0-17 
0-18 
i 0-44 
0-45 
0-60 
0*64 
M6 
1-26 
Sum of ratios atl 
night-hours. J 
2-86 
3-01 
6-51 
6-84 
12-10 
13-16 
13-67 
14-23 
