Phil. Mag. Ser. 6. Vol. 42, PI. II. 



/ Rays 

 11. Draperies 

 M. Drapery- shaped Arcs 



-H-Diffuse-Arcs 



Y Pulsating Aurora; 



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 t of strong luminosity 



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 W Draperies \ 

 W.Rays \ 



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