An monkey-alchemist pumps a bellows in a laboratory; alluding to the vanity of alchemy. Engraving by J.P. Le Bas after D. Teniers II.

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Credit: An monkey-alchemist pumps a bellows in a laboratory; alluding to the vanity of alchemy. Engraving by J.P. Le Bas after D. Teniers II. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0)