The magi sheltering in a cave on the way to Bethlehem; here representing mercury converted into sulphur, at the moment of its fixation in the alchemical process. Coloured etching after etching, 17th century.

Licence: Public Domain Mark

Credit: The magi sheltering in a cave on the way to Bethlehem; here representing mercury converted into sulphur, at the moment of its fixation in the alchemical process. Coloured etching after etching, 17th century. Wellcome Collection. Source: Wellcome Collection.