Gowland, William, 1842-1922, Japan Society of London · [London? : s.n.] · leaf 10
gold were discovered,and the precious metal was separated from them by the oldmethods of washing after the ores had been reduced to powder.The appliances used for crushing were of the simplest kind.The large pieces of rock were broken up with hand hammers ( 25 j to the size of large walnuts, and… … Fig. 3.—Extracting Gold from the Ore {Archceologia, LYl.). washed with water on an inclined trough, on the bottom ofwhich long sheets of cotton-cloth were laid (fig. 3). Theparticles of gold were caught on the rough surface of the•cloth, and the earthy material was carried away by the water. f 26 )…
Art metal-work · Metallurgy · Metal-work
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