An alchemist reading a book; his assistants stirring the crucible on the other side of the room. Engraving by P.F. Basan after D. Teniers the younger.

Licence: Public Domain Mark

Credit: An alchemist reading a book; his assistants stirring the crucible on the other side of the room. Engraving by P.F. Basan after D. Teniers the younger. Wellcome Collection. Source: Wellcome Collection.