An alchemist stoking a furnace in a dimly lit room, as daylight shines through a window. Engraving by P-F. Basan after T. Wyck.

Licence: Public Domain Mark

Credit: An alchemist stoking a furnace in a dimly lit room, as daylight shines through a window. Engraving by P-F. Basan after T. Wyck. Wellcome Collection. Source: Wellcome Collection.