མ, ;,!g -
750
THE HONGKONG GOVERNMENT GAZETTE, 13TH MAY, 1899,
from simultaneous observations.
As explained above the probable errors are not trustworthy. In course of time with changed P different results may be expected. These corrections are applied to all observations made with the new magnetometer.
Table XV.
Results of Magnetic Observations in 1898.
Magnetic Force.
Declina-
Month.
tion East. Dip North.
English Units.
Metric Units.
C. G. S. Units.
X
Y
Total.
X
Y
Total.
X
Y
Total,
February, 10° 24′ 31′′ 31° 35′ 11′′ | 7.9389
4.8815
April,
09 52
34 51 7.9312
4.8757
9.3197 3.6605 9.3100 3.6570
June,
21 46
32 50
7.9415
4.8755
August,
21 16
30 26
October,
22 21
32 47
December,.
22 36
33 37
9.3186 3.6017 7.9442 4.8696 9.3180 3.6629 2.2453 7.9424 4.8760 9.3197
3.6621 2.2482 7.9385 4.8763 9.3166 3.6603 2.2484
2.2508 2.2480 2.2480
4.2971 4.2927
4.2967
0.36605 0.922508 0.42971 0.36570 | 0.22480 | 0.42927 0.36617 | 0.22480 | 0.42967
4.2964
0.36629 0.22453 0.42964
4.2971 4.2968
0.36621 | 0.22482 | 0.42971 0.36603 | 0.22484 | 0.42958
Mean,
0 22 34 31 33 17
7.9394
4.8758 9.3171 3.6607 2.2481
4.2960
0.36607 0.22481 | 0.42960
Table XVI. exhibits the means of 15 years' observations, but as no observations were made from May, 1890, till April, 1891, inclusive, less weight has been attributed to 1890 and 1891. The values for other months without observations were interpolated. All the results have been referred to the middle of the year by applying corrections for secular variation. The monthly means refer, as far as secular variation is concerned, to the middle of 1891. All the observations were made early in the afternoon, but as no correction for daily variation has been applied, the annual and semi-annual inequalities have not been determined.
Table XVI.
Means of Magnetic Observations made during 15 years in Hongkong.
Force.
Force.
Year.
Declina- tion East.
Dip North.
Month.
Declina- tion East. Dip North.
X
Y
Total.
X
Y
Total.
1884... 0° 47′ 82°26′ 35′′ 0.36026 0.22902 0.42689 January,
1885...
45 10
1886...
42 57
1887.
42 7
1888...
40 59
20 58
26 22 .36021 .22894 25 32 .36003 .22909 22 24 36125 .22902 .36131 22884
.42681 February,. .42725 March,
35 29
0° 35′ 46′′ 32° 4′ 9′′ 0.36289
3 22
0.22734 | 0.42824
34 50
2 51
.36297 .36297
.22730 .42827
.22723 .42824
.42773 April,
34 4
3 5
.36297
.22726
.42825
.42769 May,
33 57
4 25
1889...
38 30
16 53
.36190
.22862
.42806 June,
34 0
4 6
36299 .22746 .42837
.36309 .22748 .42847
1890...
37 20
8 38
.36233
.22767
.42792 July,....
34 21
4 33
1891..
35 17
5 24
.36255
.22734
.42794 August,
34 0
4 25
1892.
33 33
3 31
36352
.22767
42893 September,
34 26
4 35
1893...
31 3 31 56 40
1894.
29 13
53 19
1895...
27 47
46.54
1896...
26 6
41 32
.36434 .36448 .22077 .36479 22595 .36462 .22510
.22717
.42936 | October,
35 20
5 14
.42926 November, 35 53 42913 December, 35 48
6 2 4 55
.36298 .22747 .42838 .36284 .22736 .42821 .36281 .22736 .42818 .36281 .22746 .42822 .36290 .22763 .42841 .36291 .22746 .42834
.42852
1897... 1898...
23 25
37 03 .36546 .22498
.42916
22 37
33 25 .36604 .22481
.42957
Mean
0 34 45 32 4 7 0.36295 0.22739 | 0.42831| Mean,
0 34 50 32 4 19 0.36203 | 0.22740 0.42830