LIST OF ILLUSTRATIONS. 



FIG. p AGE 



1. Human and Amphibian Colored Blood-corpuscles 32 



2. Apparatus of Abbe and Zeiss for Counting the Corpuscles 33 



3. The Melangeur Pipet or Mixer, 33 



4. Red Blood-corpuscles, 34 



5. Formation of Red Blood-corpuscles within " Vaso-formative Cells," 



from the Omentum of a Rabbit Seven Days Old, 42 



6. White Blood-corpuscles of Man and Frog, 45 



7. Human Leukocytes, showing Ameboid Movements, 47 



8. Various Forms of Leukocytes and Erythrocytes, 48 



9. " Blood-plates" and their Derivatives, 49 



10. Hemoglobin-crystals, 52 



1 1 . V. Fleischl's Hemometer, 53 



1 2 . Diagrammatic Representation of the Spectroscope for Study of the Ab- 



sorption-spectra of the Blood, 55 



13. 14. The Absorption-spectra of Oxyhemoglobin, and of Gas- free Hemo- 



globin with Increasing Concentration, 56 



15. The Various Absorption-spectra of Hemoglobin, 57 



1 6. The Absorption-spectra of Hematoporphyrin, 60 



1 7 . Hemin-crystals 62 



1 8. Hemin-crystals Prepared from Blood-stains, 62 



19. Hematoidin-crystals 63 



20. Diagrammatic Representation of Pfluger's Pump for the Extraction of 



the Gases of the Blood, 77 



21. Diagrammatic Representation of the Circulation, 88 



22. Course of the Muscle-fibers in the Left Auricle (Joh. Reid). Distribu- 



tion of Transversely Striated Muscle-fibers on the Superior Vena Cava 



(Flischer), 90 



23. Course of the Muscle-fibers in the Ventricles (C. Ludwig) , 91 



24. Semilunar Valves Closed and Opened, 93 



2 5 . Diagrammatic Representation of the Auricular Systole with Ventricular 



Diastole, and of Auricular Diastole with Ventricular Systole, 96 



26. Plaster Cast of the Ventricles of the Human Heart, Viewed from Behind 



and Above, 98 



27. The Closed Pulmonary Semilunar Valves of Man, Viewed From Below, . 99 



28. Curves of the Apex-beat, 101 



29. Changes of the Heart during Systole, and Sections of the Thorax, 102 



30. Contraction-curves from the Ventricle of a Rabbit Registered on a Plate 



Attached to a Vibrating Tuning-fork, 105 



3 1 . Curves Showing the Movements of the Separate Portions of the Heart 



(Chauveau and Marey) , 1 06 



32. Simultaneous Record Showing Cardiogram, the Curve of the Ventric- 



ular Pressure and that of the Aortic Pressure from the Dog (K. 



Hurihle) , 107 



33. Various Forms of Pathological Apex-beat Curves, 109 



34. Topography of the Thorax and of the Thoracic Viscera (v. Luschka 



and v. Dusch) , in 



35. Landois' Cardiopneumograph, and Cardiopneumatic Curves Obtained 



with its Aid, 122 



36. Apparatus for the Demonstration of the Influence of Respiratory Ex- 



pansion and Contraction of the Thorax on the Heart and the Cir- 

 culation, 124 



37. Pressure-vessel Filk'<l with Water 125 



38. A Pressure- vessel, 126 



xxi 



