Extra Observations of Magnetometers, September 18 — October 26. 1843. 
Declination. 
BlFILAR. 
Balance. 
Declination. 
BlFILAR.. 
Balance. 
Gottingen 
Mean Time. 
Min. 
of 
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Reduced. 
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Cor- 
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Mean Time. 
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h. d. 
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m. 
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m. 
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in. 
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m. 
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BlFILAR. k 
=0-0001205. 
Balance. 
fc=0-000013 approximately. 
BlFILAR THERMOMETER. 1 
Balance Thermometer. J 
Sept. 18i US 
Sept. 18<i i 0 h 50>n. 
A band of auroral light, about 10° altitude, seen among the clouds to NNff. 
Sept. 181 Hi 45m. 
Auroral light still visible, but very faint. 
Sept. 184 12 h 40 m . 
The aurora has now almost entirely disappeared. 
Sept. 19* lC 0'". 
Lightish to NNW. Auroral light ? 
Sept. 191 1P> O". 
All traces of auroral light have vanished, the sky nearly clear. 
mag. and met. obs. 1843. s 
