1-158-480 - Oxford Science Archive/Heritage Images

Laboratory for refining gold and silver, showing typical laboratory equipment, 1683. 1) Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature. 2,2) Side furnaces with receivers on stools, (4,4). On the right of the top shelf is a glass vessel shaped like an Hermetic vase. From a 1683 English edition of Beschreibung allerfurnemisten mineralischen Ertzt by Lazarus Ercker. (Prague, 1574).