CONTENTS 



CHAPTER XXI 



PAGE 



PHYSIOLOGY or THE HEART . . . . . . . 232 



The Cardiac Cycle ........ 232 



Action of the Valves of the Heart .234 



Sounds of the Heart ........ 235 



Coronary Arteries ........ 237 



Cardiographs . . . . . . . . . 238 



Intracardiac Pressure . . . . . . .240 



The Electro-Cardiogram . . . . . . .243 



Frequency of the Heart's Action . . . . . .247 



Work of the Heart ........ 247 



Innervation of the Heart ....... 249 



Rhythm, Conduction, etc. , in Heart Muscle .... 254 



The Isolated Heart . 260 



CHAPTER XXII 



THE CIRCULATION IN THE BLOOD-VESSELS . . . . .263 



Use of the Elasticity of the Vessels . . . . . .265 



Blood-pressure . . . . . . . . 266 



Velocity of the Blood-flow ....... 281 



The Time of a Complete Circulation . . . . .289 



The Pulse . . . . . . . . . .290 



The Capillary Flow . . . . . . .297 



The Venous Flow ...... .299 



The Vaso-motor Nervous System ...... 300 



Plethysmography ........ 308 



Pathological Conditions . . . . . . .311 



Local Peculiarities of the Circulation 312 



CHAPTER XXIII 



LYMPH AND LYMPHATIC GLANDS . . . . . .315 



Composition of Lymph . . . . . . .315 



Lymphatic Glands ... .... 316 



Lymph Flow .... ... 31 8 



Relation of Lymph and Blood . . . . . .319 



Formation of Lymph . . . . . . . .319 



CHAPTER XXIV 

 PHYSICAL CHEMISTRY AND ITS BEARING ON PHYSIOLOGICAL PROBLEIMS. . 322 



