In 1628 William Harvey published his classic work De Motu Cordis (Of the Motion of the Heart and Blood in Animals) demonstrating that the blood passed from the left ventricle to the capillaries at the periphery and back through the veins to the right side of the heart. He received many honors for his work, and was the personal physician of Kings James I and Charles I.
|William Harvey demonstrating his theory of circulation of the blood Before Charles I. by Ernest Board. Credit: Wellcome Collection. (CC BY 4.0)|