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Scientific American, Vol. 10, No. 42 (1855) (1855)

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An illustration from Scientific American, Vol. 10, No. 42 (1855), 1855, leaf 0
es, Z P. of the casing, A. It is intended to have convenient for separating the elemente— or by letter addressed to him ‘“ box 2766,” These are secured in position by thumb steam supplied constantly to its interior shifting and changing the plates. The bat- New York City Post Office. screws, 88…

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