Spasm of m. corrugator supercilii under very strong light (left); A relaxed face (photographed in full sunshine) (right)

Guillaume Duchenne de Boulogne · 1854-1855, printed 1862

Spasm of m. corrugator supercilii under very strong light (left); A relaxed face (photographed in full sunshine) (right)

albumen silver print

National Gallery of Art · CC0 1.0 · Wikidata

Lindy Arts