Se ee 
Gottingen 
Mean Time. 
ABSTRACTS FOR DISTURBANCES. 
TABLE XXIII.—continued. 
Range. 
Declino- 
Bifilar 
Magneto- 
Balance 
Magneto- 
Gottingen 
Mean Time. 
Range. 
153 
Declino- 
Bifilar 
Balance 
turbance if the range of the four daily observations, for any of the three Magnetometers, exceeds 
there is not a month preceding or succeeding, 
Magneto- 
meter. 
Magneto- 
meter. meter. 
meter. meter. meter, 
Meee 
Mic. Div. d. 
193-9 < i 2 30-1 3 
548-2 20—14 
180-7 20—17 
79:3 20—19 
98-8 20— 2 
181-7 20—10 
106:9 20—11 
411-2 20—21 
82:8 20—22 
106-2 20—23 
69-9 20— 6 
26-9 20— 8 
96-0 20— 9 5 
20—30 5 
q The above Table has been formed thus; if a, 6, and c, be the mean range for three successive months, as 
given in Tables I., IX., 
and XVI., those days in the month whose range is b, ‘have been considered days of dis- 
2 
es When 
the sum b+c¢ or a+ has been used. 
In many of the days only one or two of the instruments shew ranges exceeding the test. In the formation of 
‘Tables II., X., and XVIIL., those days only have been rejected in which the range for the instrument to which 
e Table belongs has Greccded the test. 
orrected by the new values of q 
3 The following Table contains several days in which the irregularity is well marked, but which are not in- 
eluded in the above. 
All the ranges of the two force Magnetometers given above have been 
TABLE XXIV.—Days of Marked Irregularity not determined by the Rule used in the formation of Table XXIII. 
a 
“d 
~ 1841. 1842. 
Gh Ge a 4. Chg a: 
August 15—16 November 8— 9 February 1— 2 
September 18—19 9—10 April o— 1 
2324 10—11 April 25—26 
29—30 11—12 July 4— 5 
October 6— 7 12—13 August 4—=5 
12—13 2223 November 1— 2 
MAG, AND MET. OBS, VOL. I. 2e@ 
