THE AURORA BOREALIS 



} Origin of the Name. Produced by Electricity. General Phenomena of Auroras. Various Exam- 

 ples of this Meteor. Riot's Excursion to the Shetland Isles to ohserve the Aurora. Lottin's Ob- 



( servalious in 13:38-'9. Various Auroras seen by him. Theory of Biot to explain these Meteors. 

 Objections to it. Hypothesis of Faraday. Auroras seen on the Polar Voyage of Captain 

 Franklin. 



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