X CONTENTS. 



SECTION PAGE 



32. Chemical Composition of the Plasma and Serum, . . . . 49 



33. The Gases of the Blood, 51 



34. Extraction of the Blood Gases, 53 



35. Quantitative Estimation of the Blood Gases, ..... 55 



36. The Blood Gases, 55 



37. Is ozone (0 3 ) present in Blood ? 57 



38. Carbonic Acid and Nitrogen in Blood, 58 



39. Arterial and Venous Blood, 59 



40. Quantity of Blood, 60 



41. Variations from the Normal Conditions of the Blood, .... 61 



II. PHYSIOLOGY OF THE CIRCULATION. 



42. General View of the Circulation, ........ 65 



43. The Heart, 66 



44. Arrangement of the Cardiac Muscular Fibres, 67 



45. Arrangement of the Ventricular Fibres, 69 



46. Pericardium, Endocardium, Valves, 71 



47. Self -Steering Action of the Heart, 73 



48. The Movements of the Heart, 76 



49. Pathological Disturbances of Cardiac Action, 79 



50. The Apex-Beat the Cardiogram, 80 



51. The Time occupied by the Cardiac Movements, . . . . . 85 



52. Pathological Disturbance of the Cardiac Impulse, .... 89 



53. The Heart-Sounds. . . 91 



54. Variations of the Heart-Sounds, ... ..... 95 



55. The Duration of the Movements of the Heart, 96 



56. Innervation of the Heart, 97 



57. The Cardiac Nerves, 97 



58. The Automatic Motor-Centres of the Heart, 98 



59. The Cardio-Pneumatic Movements, ....... 109 



60. Influence of the Respiratory Pressure on the Heart, . . . .111 



THE CIRCULATION. 



61. The Flow of Fluids through Tubes, 115 



62. Propelling Force, Velocity of Current, Lateral Pressure, . . .115 



63. Currents through Capillary Tubes, 118 



64. Movements of Fluids and Wave-Motion in Elastic Tubes, . . . 118 



65. Structure and Properties of the Blood-Vessels, . . . . .119 



66. The Pulse Historical, 127 



67. Instruments for Investigating the Pulse, 128 



68. The Pulse-Curve or Sphygmogram, 136 



69. Dicrotic Pulse, 140 



70. Characters of the Pulse, . . 141 



71. Variations in the Strength, Tension, and Volume of the Pulse, . . 143 



72. The Pulse-Curves of various Arteries, 144 



73. Anacrotism, 146 



74. Influence of the Respiratory Movements on the Pulse-Curve, . . 148 



75. Influence of Pressure upon the Form of the Pulse-Wave, . . . 151 



76. Rapidity of Transmission of Pulse- Waves, 152 



77. Propagation of the Pulse-Wave in Elastic Tubes, 152 



78. Velocity of the Pulse-Wave in Man, 154 



