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Scientific American, Vol. 37, No. 6 (August 1877) (1877)

leaf 7

An illustration from Scientific American, Vol. 37, No. 6 (August 1877), 1877, leaf 7
^tuntxiu %mtxum. [August ii, 1877. 86 the cylinder and causes it and the toothed POSTAGE STAMP CANCELLEB. … blocks, a second or a third action of the possible to reunite them, and thus the POTTS' METHOD OF ATTACHING AND CANCELLING POSTAGE STAMPS. steam upon the piston and toothed bar is traffic in washed stamps will be at an end. had until the log is in the right position on By no cancelling stamps being…

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