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Scientific American, Vol. 56, No. 24 (1887) (1887)

leaf 4

An illustration from Scientific American, Vol. 56, No. 24 (1887), 1887, leaf 4
thod of fastening the plate be detected by the touch, and can be seen by the aid recently have been seen traversing numerous London to the camera bed frame secures unusual strength, of asmall magnifying glass when the card is held in thoroughfares, is Messrs. Singer & Co.’s latest adapta- since the… … © 1887 SCIENTIFIC AMERICAN, INC.

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