Men vainly seeking alchemical 'white' (mercurial) water in the ground and in trees. Coloured etching after etching, ca. 17th century.

Reference:
38186i

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Men vainly seeking alchemical 'white' (mercurial) water in the ground and in trees. Coloured etching after etching, ca. 17th century. Source: Wellcome Collection.