A man holds his head in despair as the croupier claims all his chips in the gambling game. Wood engraving.

An ape of the genus troglodytes niger standing before a tropical scenery holding a large branch of a tree. Coloured etching by W. H. Lizars.

A physician and a surgeon attending to a woman patient. Oil painting by Mathijs Naiveu.

Paolo Mascagni. Stipple engraving by A. Tardieu.

X-ray detail of skulls from Henry Gillard Glindoni's painting 'John Dee Performing an Experiment before Elizabeth I'. Oil on canvas, late 19th century.