at cost of the crucibles, andeffecting a notable saving in the expense of the man-ufacture. The steel is protected during the processfrom contact with the air by a covering of meltedscoria, and the fire is supplied with a blast of hot air. Sir David Brewster, in his Life oi Newton,says that neither… … SSUED FKOM THE UNITED STATES PATENT OFFICE FOB THE WEEK ENDING SElTEMBEli 10, 1861.Reported Officially for the Scientific American. PATENTEES, BEAD THIS. The new Patent Laws which went into force on the2d of March last, authorized the Commissioner ofPatents to have all the specifications which…
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