M. Poey on the Aurora of 1859. 405 
Aurora now became very red with rays to the north and west. 
This shade spread almost to the zenith. The fire-red of the 
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whose different phases I have followed then constituted a white 
arch, the central and visible base of the Aurora above a bed o: 
cumulus clouds which reached 8° above the horizon. : At 
These two Auroras have manifested the following peculiarities 
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wer 
segment h it might readily have been covered with the 
pis eee poate which are §? above the conse : _— 0 nie 
expa urora ent extent of w no 
aR ti i se 4th. The great height of 23° of the lu- 
minous segment or lower white arch visible onl in the second 
Aurora, 5th. The rays or jets of light, some of which rose di- 
verging from a point very far below the horizon, while others 
Springing from the centre of the Aurora appeared to converge 
in extent over 180°, their long continuance to d ye wn here 
3 of an obscure lo 
