The anatomy and philosophy of expression as connected with the fine arts

Bell introduced new methods of determining the functional anatomy of the nervous system. In 1804 Bell moved to London, where he opened his own school of anatomy and gradually built up a surgical practice. He combined his skill in painting with his scientific interests in Essays on the anatomy of expression in painting (1806). Besides being an exposition of the anatomical and physiological basis of facial expressions for artists, the book included much philosophy and critical history of art. The book gained Bell some reputation and remained popular, going through several editions up to 1893. -- DSB, vol. 1, p. 583.