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Scientific American, Vol. 9, No. 22 (1863) (1863)

leaf 7

An illustration from Scientific American, Vol. 9, No. 22 (1863), 1863, leaf 7
ratuses which promises to reduce the expense of A waterproof floating mail bag, invented by Mr. formed ou the top of them through which are small fuel by lessening the quantity consumed for specific George Mitchell, has been exhibited in the Exchange holes, a ; ashes soon fill up the groove, and… … size of the bag. The boiler, A, is not peculiar, whole, however, was but may be of any form buoyant, and on opening desired ; this boiler is set in the furnace, B. There cool and prevent the formation of clinkers, which the bag it was found that not a drop of moisture had is an iron front to this…

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