m of a shallow trough,but the cavity is not more than an inch in depth;showing that not more than one-thousandth part ofan inch has been burned away at each ignition. Itis probable that the gases go completely envelope theheated surface that, though this is red hot, no actualburning generally takes… … ISSUED FROM THE UNITED STATES PATENT-OFFICE FOB THB WffltK WDINQ AUGUST 18, 1863. Reported OJJlcially for the Scientific American. *„* Pamphlets containing the Patent Laws and full par-ticulars of the mode of applying for Letters Patent, speci-fying size of model required, and much other…
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