Axial Commons Image Treasury
Steel engraving of two men in tailcoats: a standing younger man with a top hat, and an older man leaning in a thoughtful pose by a chair.

Introverted and Extroverted Man, Phrenology Plate, Causality

A steel engraving shows two men in dark tailcoats and white waistcoats standing before draped curtains. The younger man on the left holds a top hat and stands upright; the older man on the right leans on a chair, his hand raised to his head in a pensive pose. Labels below read Causalité, Phrénologie.

Artist
Bruyères, Hippolyte.
Date
[1847]
Medium
Steel engravings
Source
Wellcome Collection
Size
2813 × 4000 px
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Public domain · Wellcome Collection marks it Public Domain Mark; made by 1847.
Rights checked 2026-11-05 · tier A · as stated by the source: Public Domain Mark (Wellcome Collection)

Credit (appreciated, not required for public-domain works): Wellcome Collection