William Harvey, English physician, 17th century.
© Science Museum / Science & Society Picture Library
Engraving made in 1732 by Jacobus Houbraken (published in 1739) after a painting by Bemmel. The English physician William Harvey MD, FRCP (1578-1657), was attached to St Bartholomew's Hospital, and was physician to both James I (1566-1625) and Charles I (1600-1649). 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. In the foreground is the Asclepian staff, symbol of physicians - a snake entwined around a staff.