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Scientific American, Vol. 77, No. 24 (December 1897) (1897)

leaf 4

An illustration from Scientific American, Vol. 77, No. 24 (December 1897), 1897, leaf 4
rter adopt the system already in successful operation in looped together at the Exchange and a continuous flow Philadelphia, and to this end the Batcheller Pneu- lines the inside diameter is 3y'j inches, and on the of air was maintained by a compressor at one end and longer lines 3 inches. The… … 9.-THE BEACH AUTOMATIC POSTAL DELIVERY BOX. lO.-THE BEACH PLAN OF DISPATCHING LETTERS FOR A BRANCH STATION. measuring 4"^ feet wide by 4 feet hi^h, the straight portion being of cast iron and the bends for a set of lines running from the general post office same year as that of Berlin. 5ere a novel…

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