Abstract
SINCE 1885 curious cloud formations have been seen on summer nights in both the northern and southern hemispheres, in evident connection with those phenomena which followed the great volcanic eruption at Krakatão. The intense brightness of these formations, considering the position of the sun, denoted that they were situated very far above the earth's surface. Probably these clouds consisted of erupted particles thrown to a very great height and there illuminated on summer nights by the sun.
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Proposals for a Scheme of Co-operative Observation of the So-Called Luminous Clouds . Nature 45, 117–118 (1891). https://doi.org/10.1038/045117b0
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DOI: https://doi.org/10.1038/045117b0