Title

Athanor or 'Slow Harry'

Caption

Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature.1574. [1683]. Centre: 1) Athanor or 'Slow Harry': 2) side chambers containing reagents: 3) glass receivers. Back: 5) furnace heating retort. Bottom: 7) Long furnace. This plate shows the distillation of nitirc acid (also known as Aqua Fortis or Parting Acid) which was used in the refining and assaying of metals. From 1683 English edition of "Beschreibung allerfurnemisten mineralischen Ertzt", Lazarus Ercker, (Prague,1574). Copperplate engraving.

Info+

Photos12.com - Ann Ronan Picture Library

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP07104_460001054

License type

Rights managed

Available size

28,1Mb (1,9Mb) / 9,3in x 11,8in / 2776 x 3543 (300dpi)