William Harvey MD FRCP, English physician, early 17th century.
© Science Museum / Science & Society Picture Library
Harvey (1578-1657) was attached to St Bartholomew's Hospital, London, and was physician to both James I and Charles I. He is best known for discovering the circulation of the blood, which he made public in 1616, and which was published in his highly influential publication 'De motu cordis' (1628). He also superintended the physical examination of women accused of witchcraft and built a library for the Royal College of Physicians.