Abstract
IN his charming story of “The Purloined Letter,” Edgar Allan Poe tells how all the efforts and artifices of the Paris police to obtain possession of a certain letter, known to be in a particular room, were completely baffled for months by the simple plan of leaving the letter in an unsealed envelope in a letter-rack, and so destroying all curiosity as to its contents; and how the letter was at last found there by a young man who was not a professional member of the force. Closely analogous to this is the story I have to set before you to-night—how certain mysteries of fluid motion, which have resisted all attempts to penetrate them, are at last explained by the simplest means and in the most obvious manner.
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Study of Fluid Motion by Means of Coloured Bands1. Nature 50, 161–164 (1894). https://doi.org/10.1038/050161a0
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DOI: https://doi.org/10.1038/050161a0
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