Anatomical Study of the PenisRobert Bénard

This copperplate engraving (1751–76), made for Diderot and d’Alembert’s Encyclopédie , details the penis’s structure, showing corpus cavernosum and corpus spongiosum . Ties at the base restrict blood flow, clarifying the venous network for study. Such methods reflected Enlightenment science’s pursuit of precision in anatomy.