LIST OF ILLUSTRATIONS. 



FIG. PAGE 



1. Sections through the frozen thorax of a dog (Haycraft and Paterson) . 5 



2. Diagram showing the resultant pull of the papillary muscles (Ludwig) . 8 



3. Multiconvex upper surface of the closed tricuspid valve (Krehl) . 8 



4. Mitral valve. Insertion of the chordae tendinese (Krehl) . . 9 



5. Diagram of the chordae tendineae (Krehl) ..... 9 



6. Intracardial pressure curves (Chauveau and Marey) . . .14 



7. Pick's straight spring manometer ...... 15 



8. Goltz and Gaule's combined maximal and minimal manometer, as 



modified by Hiirthle ....... 16 



9. Fredericq's sphygmoscope ....... 17 



10. v. Basch's hollow spring manometer . . . . .17 



11. Hiirthle's differential manometer . . . . . .17 



12. Intraventricular pressure curve (Bayliss and Starling) . . .19 



13. Aortic pressure curve (Bayliss and Starling) -^ .19 



14. Aortic and intra ventricular pressure curves (Hiirthle) . . .20 



15. (Hurthle) ... 21 



16. Auricular pressure curve (Porter) . . . . .22 



17. Cardiac and aortic pressure curves (Porter) . . . .24 



18. Tracing of the right auricle and carotid pulse (Porter) . . .27 



19. Diagram of Hiirthle's experiment . . . . .30 



20. Tracing of pulse and of first and second sounds of the heart (Einthoven 



and Geluk) ........ 31 



21. Tracing of sounds of heart from a case of aortic regurgitation (Einthoven 



and Geluk) ........ 32 



22. Areas of cardiac impulse, when supine and when lying on the left side 



(Sequeira) ........ 33 



23. Edgren's cardiograph ....... 35 



24. Impulse curve and sounds of the heart (Edgren) . . .36 



25. High and low aortic pressure curves (Hiirthle) . . . .37 



26. Simultaneous records of carotid pulse and heart impulse (Edgren) . 38 



27. Myocardiograph (Roy and Adami) ..... 39 



28. Tracing illustrating effect of compression of the thorax (Hill and Barnard) 45 



29. 55 JJ 55 )) 55 



30. Effect on aortic pressure of artificial ventilation of the lungs (Hill and 



Barnard) ......... 46 



31. Pressure in the air passages and carotid pulse (Mosso) . . .47 



32. Cardiometer (Roy and Adami) ..... 49 



