William Harvey, English physician, 17th century.
© Science Museum / Science & Society Picture Library
Engraving by C H Jeens of William Harvey MD, FRCP (1578-1657). Harvey was attached to St Bartholomew's Hospital, London, and was physician to both James I and Charles I. Best known for discovering the circulation of the blood, made public in 1616, Harvey also superintended the physical examination of women accused of witchcraft, and built a library for the Royal College of Physicians.