Letter | Published:

Auroral Display


AN auroral display was observed here last evening between 7h. and 8h. The sky was partially overcast during a portion of the time, but it cleared about 7h. 10m., when the northern quarter was lighted up by a bright glow of an aqua-marine line. Only three faint streamers were remarked. They were of a creamy-white colour, and extended from the horizon in the direction of the magnetic north nearly to the zenith. Examining the auroral light with a direct-vision spectroscope by Hilger, I saw one remarkably distinct line, which was estimated to occupy the position of the characteristic line observed by Ångström and others, between D and E. No other lines were visible.

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