Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown

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Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. This plate displays the Athanor and side chambers (5,5) for reagents in separate parts. One of the uses of the furnace was the production of nitric acid (also known as Aqua Fortis or Parting Acid) which was used in the refining and assaying of metals. From a 1683 English edition of Beschreibung allerfurnemisten mineralischen Ertzt by Lazarus Ercker. (Prague, 1574).

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Size: 3726px × 4690px
Location:
Photo credit: © Oxford Science Archive/Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No

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