“Two Disquisitions in Reply to John Riolan, jun.,” 1649. “De Generatione Animalium,” London, 1651; in English, 1653. * * * * * “Biographica Britannica,” 1750. The Life of Harvey, containing much curious information and discussion, is evidently that on which all subsequent biographies are based. “Harveii Opera Omnia,” edited by Dr. Akenside, with Life by Thomas Lawrence, M.D., 1766. “Lives and Letters of Eminent Persons,” by John Aubrey, 1813. “Records of William Harvey, with Notes,” by James Paget, of St. Bartholomew’s Hospital, 1846. “The Works of William Harvey,” translated by Robert Willis, M.D. (Sydenham Society, 1848). This excellent translation has been followed in the present volume. “Histoire de la Découverte de la Circulation du Sang,” par M. J. P. Flourens, 1854. “Circulation of the Blood: its History, Cause, and Course,” by G. H. Lewes in “Physiology of Common Life,” 1859. “Memorials of Harvey,” collected by J. H. Aveling, 1875. “William Harvey: a history, etc.,” by Robert Willis, M.D., 1878. “Roll of the Royal College of Physicians,” by William Munk, M.D., 2nd ed., 1878. Huxley on “Evolution,” in “Encyclopædia Britannica,” 9th ed., 1878. “Experimental Physiology,” by Sir R. Owen, 1882. “A Defence of Harvey,” by George Johnson, M.D., 1884. “Masters of Medicine: William Harvey,” by D’Arcy Power 1897. NOTE In the present edition of Harvey’s Treatise on the Circulation of the Blood, which is reprinted from the Sydenham Society’s edition of 1847, the footnotes by Willis, the editor and translator of that edition, are distinguished by brackets from Harvey’s original notes. TABLE OF CONTENTS AN ANATOMICAL DISQUISITION ON THE MOTION OF THE HEART AND BLOOD IN ANIMALS PAGE EDITOR’S INTRODUCTION vii DEDICATION 3 INTRODUCTION 9 CHAP. I. THE AUTHOR’S MOTIVES FOR WRITING 22 II. OF THE MOTIONS OF THE HEART, AS SEEN IN THE DISSECTION OF LIVING ANIMALS 24 III. OF THE MOTIONS OF ARTERIES, AS SEEN IN THE DISSECTION OF LIVING ANIMALS 28 IV. OF THE MOTION OF THE HEART AND ITS AURICLES, AS SEEN IN THE BODIES OF LIVING ANIMALS 31 V. OF THE MOTION, ACTION, AND OFFICE OF THE HEART 37 VI. OF THE COURSE BY WHICH THE BLOOD IS CARRIED FROM THE VENA CAVA INTO THE ARTERIES, OR FROM THE RIGHT INTO THE LEFT VENTRICLE OF THE HEART 42