Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 439
on rim, which would be and another is cut ; and as the lead attacked by it. The prepared cupel is disappears from the cupel it is replaced jilaced on a truck, to facilitate its by additions from the melting-pot g, so removal into the space it is to occupy in as to maintain an even level. This goes… … of recovering this silver, amounting so arranged that the flame from a coal perhaps to 40 oz. per ton. Sometimes fli-e b passes completely across it, and a steam-jet is used instead of a blowing into the two flues c opening into a 40-ft. machine to supply air for the oxidation chimney d. An air…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
