Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 406
ndensed the openings /'</; in stacking it, large mercury to escape into the gutter h, blocks poor in metal are placed first, leading to suitable receptacles. The next above come smaller pieces of richer ore, and at top are put cakes made by uncondensed escaping vapours pass into kneading up the… … the wood fire a, and the chimney /; walls, and these cross-walls are broken serves for the escape of the sulphurous through alternately at the bottom ami acid gas. Each roasting occupies about lop, to admit of the passage of the 12 hours, and the furnace has to cool vapour, but at the same time to…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
