VII. THE BLOOD PERCOLATES THE SUBSTANCE OF THE LUNGS FROM THE RIGHT VENTRICLE OF THE HEART INTO THE PULMONARY VEINS AND LEFT VENTRICLE 49 VIII. OF THE QUANTITY OF BLOOD PASSING THROUGH THE HEART FROM THE VEINS TO THE ARTERIES; AND OF THE CIRCULAR MOTION OF THE BLOOD 55 IX. THAT THERE IS A CIRCULATION OF THE BLOOD IS CONFIRMED FROM THE FIRST PROPOSITION 58 X. THE FIRST POSITION: OF THE QUANTITY OF BLOOD PASSING FROM THE VEINS TO THE ARTERIES. AND THAT THERE IS A CIRCUIT OF THE BLOOD, FREED FROM OBJECTIONS, AND FARTHER CONFIRMED BY EXPERIMENT 64 XI. THE SECOND POSITION IS DEMONSTRATED 67 XII. THAT THERE IS A CIRCULATION OF THE BLOOD IS SHOWN FROM THE SECOND POSITION DEMONSTRATED 75 XIII. THE THIRD POSITION IS CONFIRMED: AND THE CIRCULATION OF THE BLOOD IS DEMONSTRATED FROM IT 78 XIV. CONCLUSION OF THE DEMONSTRATION OF THE CIRCULATION 85 XV. THE CIRCULATION OF THE BLOOD IS FURTHER CONFIRMED BY PROBABLE REASONS 86 XVI. THE CIRCULATION OF THE BLOOD IS FURTHER PROVED FROM CERTAIN CONSEQUENCES 90 XVII. THE MOTION AND CIRCULATION OF THE BLOOD ARE CONFIRMED FROM THE PARTICULARS APPARENT IN THE STRUCTURE OF THE HEART, AND FROM THOSE THINGS WHICH DISSECTION UNFOLDS 96 THE FIRST ANATOMICAL DISQUISITION ON THE CIRCULATION OF THE BLOOD, ADDRESSED TO JOHN RIOLAN 111 A SECOND DISQUISITION TO JOHN RIOLAN; IN WHICH MANY OBJECTIONS TO THE CIRCULATION OF THE BLOOD ARE REFUTED 131 LETTERS TO CASPAR HOFMANN, M.D. 175 TO PAUL MARQUARD SLEGEL, OF HAMBURG 176 TO THE VERY EXCELLENT JOHN NARDI, OF FLORENCE 184 IN REPLY TO R. MORISON, M.D., OF PARIS 185 TO THE MOST EXCELLENT AND LEARNED JOHN NARDI, OF FLORENCE 193 TO JOHN DANIEL HORST, PRINCIPAL PHYSICIAN OF HESSE-DARMSTADT 195 TO THE DISTINGUISHED AND LEARNED JOHN DAN. HORST, PRINCIPAL PHYSICIAN AT THE COURT OF HESSE-DARMSTADT 197 TO THE VERY LEARNED JOHN NARDI, OF FLORENCE, A MAN DISTINGUISHED ALIKE FOR HIS VIRTUES, LIFE, AND ERUDITION 199 TO THE DISTINGUISHED AND ACCOMPLISHED JOHN VLACKVELD, PHYSICIAN AT HARLEM 200 APPENDIX