De motu corporum in gyrum (On the motion of bodies in an orbit) is a manuscript by Isaac Newton sent to Edmund Halley in November 1684
In 1824 he was admitted to the degree of M.D., after publishing an inaugural dissertation, De Morbo Comitiali, and in the same year he brought out a new edition of William Harvey's De Motu Cordis et Sanguinis, with additions and corrections.