Thomas Rowlandson (1756–1827) was an English artist and caricaturist of the Georgian and Regency era, famous for his political satire and social observation.
His close contemporary, Franz Joseph Gall (1758-1828), is depicted in this hand-coloured aquatint leading a discussion on phrenology with five colleagues, among his extensive collection of skulls and model heads. The colleagues themselves look like mercilessly observed phrenology cases! An open volume rests on a lectern beneath Gall's prominent stomach.
The three shelves of model heads behind Gall are labelled: "Lawers, thieves & murderers", "Poets, dramatists, actors", "Philosophers, statesmen & historians”. Gall was a great anatomist , pioneering the concepts of localised functions in the brain. He developed the “cranioscopy”, a method to try the personality, mental faculties on the basis of the external shape of the skull. This led to the famous 19th century science - today widely regarded as a pseudo-science - of phrenology. Its principal exponent was Gall's pupil Johann Christoph Spurzheim (1776-1832).
See: Lorenzo Lorusso, 'Neuroscience by Caricature in Europe throughout the ages: English caricaturists in the 18th-19th century', https://neuro-caricatures.eu/english-caricaturists/
Dr Mark Stocker Curator, Historical International Art November 2018