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Scientific American, Vol. 44, No. 16 (April 1881) (1881)

leaf 7

An illustration from Scientific American, Vol. 44, No. 16 (April 1881), 1881, leaf 7
ring its and others whose duties take them over the track for various chamber is forced to traverse a layer of air-purifying ma- oscillation. purposes. In fact the velocipede shown in the engraving is terial, which filters out everything objectionable, and leaves Mr. Max Rubin, of New York city,… … by addressing Messrs. George S. Shef- ing and thinning out all kinds of root field & Co., Three Rivers, Mich. SHEFFIELD'S VELOCIPEDE HAND CAR, plants. ©1881 SCIENTIFIC AMERICAN, INC

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