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in the zenith. Both thefe luminous ftreamers kept 
in a continual agitation, which lafted the whole time 
of their exiftence, that is, till eleven o’clock. At 
the foot of thefe lights was the furnace, which glowed 
with rays of light lefs elevated, and feniibly inclined 
to the horizon j thefe were alfo in continual agitation. 
At eleven, fix dreamers, parallel'to one another, fhot 
up in the north, under the conftcllation of the Little 
Bear ; they afeended not fo high, but were more con- 
fpicuous than the two preceding ones, and their un- 
dulations w'ere not fo quick. About half an hour af- 
ter eleven, the flcy began to be clouded ; at midnight 
it was fo all over, which put an end to all hope of 
further obferving the progrefs of this phsenomenon. 
In this Aurora I could not difeern any lightning or 
rumbling, as I did in that which appeared in the 
night of the 21ft of May, 1762, deferibed in the 
fifth and fixth volumes of the Memoires des S Javans 
Rtrangers. 
Whilfi: this phenomenon lafied, the air was calm, 
and no wind flirring j at lead what little there was, 
was from the north-ead. The quickfilver in the ba- 
rometer dood at 28 inches li- linej and Reaumur’s 
thermometer at 20^ degrees. During the whole day 
the barometer varied only lA line, and the thermo- 
meter no more than five degrees. 
An Account of an Aurora Borealis, obferved at Paris, 
the ^th ^December, 1768. By the fame. 
About feven in the evening, the northern quarter 
was enlightened with an incipient Aurora Borealis, 
which increafed gradually. At eleven at night it was 
very 
