Abstract
IN reply to the inquiry despatched to me by NATURE with last mail, whether any remarkable sun-glow had been observed recently in Iceland, and which, I learn, has been observed in nearly all parts of the world, and whether any volcanic eruption had lately taken place in the island to which the same might be attributable, I beg to relate, as regards the first of these points, that on November 23, between 5 and 6 p.m., I noticed for the first time an unusual and striking purple intensity of the sky, a phenomenon which was also observed on the subsequent morn ings and nights. I did not attach much importance to this phenomenon at the time, tnrough the circumstance that I was told that sunrises and sunsets were generally attended by very intense auroræ here, and since then I have had so few opportu nities of seeing the sky free from clouds that I have not observed any similar phenomenon. I team, however, on inquiry here, that the same glow was observed once or twice before Christmas by several persons. On one occasion, January 30, the sky was perfectly clear several hours after sunset, but there was no unusual glow.
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TROMHOLT, S. Sun-Glows and Volcanic Eruptions in Iceland . Nature 29, 420 (1884). https://doi.org/10.1038/029420a0
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DOI: https://doi.org/10.1038/029420a0