Abstract
THE kind of cloud described by M. André Poëy (NATURE, Oct. 19, 1871, p. 489) is by no means new or rare if I can judge correctly from the figure and explanation. It may often be seen on the lower part of the flank of a great rain or thunder cloud, and appears to arise from the dropping or subsidence of portions of the air heavily loaded with watery particles. My own impression is that it appears when the cloud is about to break up. M. Poëy will find the cloud described in the Philosophical Magazine for July 1857, where the name of droplets is given to the form, and its position in a thunder cloud indicated by a figure.
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J. New Form of Cloud. Nature 5, 7 (1871). https://doi.org/10.1038/005007a0
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DOI: https://doi.org/10.1038/005007a0
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