This is smelted with rich gold ores, notably those containing tellurium, for white metal or regulus; and by a following process of partial reduction analogous to that of selecting in copper smelting, bottoms of impure copper are obtained in which practically all the gold is concentrated.
Regulus הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד