124 
COLONEL SABINE ON THE MAGNETIC DISTURBANCES. 
Assuming the existence of a periodical inequality, such as has been described in the 
paper to which this Postscript is annexed, we may take the means of the numbers 
and values from 1843 to 1848 inclusive, (constituting approximately the half period 
of the supposed inequality,) as the units of ratios, which will show with more con- 
venient simplicity the variation of the numbers and aggregate s’alues in the different 
years. These are contained in Table XXV. 
Table XXV. 
Units. 
Numbers. 
Aggregate values. 
Easterly. 
Westerly. 
Total. 
Easterly. 
Westerly. 
Total. 
424-7 
355-8 
780-5 
00 
2399 
5246 
ri84i. 
1-33 
1-62 
1-46 
1-31 
1-46 
1-38 
1842. 
1-03 
1-05 
1-04 
0-91 
0-90 
0-91 
1843. 
0-63 
0-57 
0-60 
0-53 
0-47 
0-50 
q 
1844. 
0-77 
0-76 
0-76 
0-76 
0-71 
0-73 
1845. 
0-70 
0-76 
0-73 
0-62 
0-64 
0-63 
1846. 
1-29 
1-.36 
1-32 
1-28 
1-25 
1-27 
1847. 
1-25 
1-15 
1-21 
1-27 
1-59 
1-42 
1848. 
1-36 
1-40 
1-38 
1-54 
1-34 
1-45 
It is seen by this Table that the ratios, both of numbers and values, in the years 
1841 and 1842 are greater than in 1843, and that 1843 is in every respect, whether 
of numbers or values, easterly or westerly, the minimum of the whole series. The 
ratios of the numbers and values in 1841 are greater than in 1842, presenting the 
same appearance of a periodical inequality previous to 1843, as in the years sub- 
sequent to that date. 
It may be desirable to subjoin also in one view the inequality in the range of the 
Diurnal Variation at Toronto and Hobarton from 1841 to 1851 inclusive, and at 
Munich from 1841 to 1850 inclusive, the latter being taken from the Number of 
Poggendorff’s Annalen, already referred to. 
1’able XXVI. 
Years. 
Toronto. 
Munich. 
Hobarton. 
Nov. Dec. 
Jan. Feb. 
Mar. Apr. 
Sept. Oct. 
May, June, 
July, Aug. 
Mean of the 
whole year. 
Winter. 
Summer. 
Mean of the 
whole year. 
Nov. Dec. 
1 Jan. Feb. 
Mar. Apr. 
Sept. Oct. 
May, June, 
July, Aug. 
Mean of the 
whole year. 
1841. 
6-67 
9-46 
12-38 
9-30 
5-12 
10-53 
7-S2 
' n-13 
8-77 
4-94 
8-28 
1842. 
5-67 
8-87 
11-48 
8-67 
5-07 
9-09 
7-08 
1 10-56 
8-14 
4-55 
7-73 
1843. 
5-64 
9-36 
11-70 
8-90 
4-70 
9-59 
7-13 
1 10-16 
7-80 
4-50 
7-66 
1844. 
5-70 
8-74 
12-17 
8-87 
4-44 
8-79 
6-61 
1 10-77 
8-45 
4-30 
7-84 
1845. 
5-73 
9*15 
13-36 
9-41 
5-89 
10-37 
8-13 
12-16 
8-61 
4-39 
8-39 
1846. 
6-33 
9-21 
12-27 
9-27 
6-08 
11-55 
8-81 
12-58 
9-50 
5-10 
9-06 
1847. 
7-28 
10-08 
13-84 
10-40 
7‘13 
11-98 
9-33 
13-43 
10-97 
5-38 
9-93 
1848. 
9-48 
11-04 
15-82 
12-11 
7-85 
14-44 
11-15 
14-14 
10-67 
7-09 
10-63 
1849. 
8-25 
12-25 
14-80 
11-77 
8-06 
13-21 
10-64 
1 11-32 
8-28 
4-79 
8-13 
1850. 
8-01 
10-90 
13-74 
10-88 
7-61 
13-27 
10-44 
11-32 
9-30 
4-89 
8-37 
1851. 
7-01 
10-82 
12-61 
10-15 
8-54 
6-85 
4-57 
6-63 
