hQRammelsberg Mine, in the Hartz Mountains. In aportable furnace about one and a half bushels of cokeburn from 4 P. M., to 5 A. M.J when the furnace isremoved, and the rock left to cool, after beingsprinkled with water. About noon the face ot therock spontaneously detaches itself: and after that,… … ISSUED FROM THE UNITED STATES PATENT-OFFICE FOR THE WEEK ENDING APRIL 11, 1865.Reported Officially or the Scientific American. «S Pamphlets containing the Patent Laws and fullparticulars of the mode of applying for Letters Patent,specifying size of model required and much other in-formation useful…
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