Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 413
ed, the doors of the furnace are opened, moraheat is given, and the mass, ore and slags, tlioroughly melted, -with the addition of some pure quick-lime, which is occasionally thrown into the melting mass, and well stirred along with the ore. Most o!the lead is yielded by the ore in this operation,…
Mechanical engineering · Mechanics · Engineering
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