Laboratory for refining gold and silver, showing

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

1574 1683 Allerfurnemisten Athanor Beschreibung Chemical Chemistry Constant Ercker Ertzt Furnace Furnaces Hermetic Lazarus Maintaining Mineralischen Receivers Refining Shelf Slow Stools Temperature

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