504 MAJOE-GENEEAL SABINE ON THE EESHLTS OF HOUELT OBSEEYATIONS 
Table IV, 
Exhibiting the ratios at the ditferent hours, at Point Barrow and Toronto, of the values 
of the easterly and westerly portions of the larger disturbances to their respective 
mean hourly values. 
Local 
astronomical 
hours. 
Point Barrow, 
easterly 
disturbances. 
Toronto, 
westerly 
disturbances. 
Point Barrow, 
westerly 
disturbances. 
Toronto, 
easterly 
disturbances. 
Local ciTil 
hours. 
18 
1-65 
1*82 
0-70 
0-45 
6 A.M. 
19 
2*82 
2-23 
0-65 
0-35 
7 A.M. 
20 
3-22 
2*58 
0-33 
0-26 
8 A.M. 
21 
3-88 
2-25 
0-68 
0*21 
9 A.M. 
22 
1*93 
1-62 
0-89 
0-28 
1 0 A.M. 
23 
1-03 
1-00 
0-79 
0-39 
11 A.M. 
0 
0-40 
0-80 
0-92 
0-24 
Noon. 
1 
0-34 
0-41 
0-64 
0-21 
1 P. M. 
2 
0-27 
0-65 
0-56 
0-20 
2 P.M. 
3 
0-15 
0-62 
0-40 
0-22 
3 P..M. 
4 
0-14 
0-80 
0-35 
0-32 
4 P.M. 
5 
0-08 
0-71 
0-46 
0-44 
5 P.M. 
6 
0-09 
0-57 
0*36 
1*05 
6 P.M. 
7 
0-13 
0-39 
0-74 
1-44 
7 P.M. 
8 
0-15 
0-28 
Ml 
1-95 
8 P.M. 
9 
0-48 
0-22 
M4 
3-09 
9 p M. 
10 
0*37 
0-45 
1-30 
2-41 
1 0 P.M. 
11 
0-81 
0-27 
2-52 
2-02 
1 1 P..M. 
12 
0-96 
0-82 
2-43 
1-76 
Midnight. | 
13 
0-96 
M9 
2-37 
1-79 
1 A.M. j 
14 
1-07 
1-00 
1*80 
1-37 
2 A.M. 
15 
0-93 
0-94 
M4 
1-28 
3 A.M. ! 
16 
1-22 
1-21 
0-82 
1*45 
4 A.M. ; 
17 
1-69 
1-23 
0-64 
0-91 
5 A.M. ; 
It is obvious on the mere inspection of Table IV,, that the principal analogy is not 
between the disturbances which deflect the needle in the same direction at the two 
stations, but between those which deflect the needle in opposite directions ; betv^’een the 
easterly disturbances at Point Barrow and the westerly at Toronto, and between the 
westerly disturbances at Point Barrow and the easterly at Toronto. Nor is this analogy 
manifested in slight and unimportant particulars, but on the contrary in the most marked 
characteristics of both classes of phenomena. Thus, when the average disturbance in 
the twenty-four hours is taken as the unit, the easterly distmhances at Point Barrow 
and westerly at Toronto are seen to have the same characteristic distribution, riz. the 
amount of disturbance at the several hours from noon to about midnight is below unity, 
and at the hours from a little after midnight to just before noon above unity ; whilst on 
the other hand, the westerly disturbances at Point Barrow and easterly at Toronto accord 
with each other in presenting a very different distribution, riz. their amount exceeds 
the average at the four or five hours on either side of midnight, and is below unity at 
all the other hours of the day and night. The analogy thus manifested in the general 
distribution of the disturbances is equally strongly marked when particular points are 
regarded as, for example, it has been shown, in the earlier part of this communication. 
