Abstract
TO distribute the time with accuracy and uniformity in a large city is a problem of great utility and extreme importance. This problem has been all but completely solved by the pneumatic clocks erected since March last in the principal streets of Paris and among a considerable number of subscribers, who, for a halfpenny a day, receive dials with pneumatic receivers established in the public streets and in private buildings.
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Pneumatic Clocks . Nature 22, 226–228 (1880). https://doi.org/10.1038/022226a0
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DOI: https://doi.org/10.1038/022226a0