Abstract
SOME large iron pipes have just been laid from the General Post Office to the Branch Office at Charing Cross, through which pipes packages of letters are blown in either direction at will, by compressed air. These tubes are to be extended from Charing Cross to the Houses of Parliament; and when the total expenses of laying pipes and of transmitting small packages through them is known by experience, very possibly the system may be extended, and letters intended for quick delivery may be sent by this method at a moderate charge.
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HARRISON, W. A Tubular Postal Service . Nature 3, 450–451 (1871). https://doi.org/10.1038/003450b0
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DOI: https://doi.org/10.1038/003450b0