CONTENTS. xi 



PAGE 



RESPIRATION, continued. 



Quantity of Air respired .. .. .. .. 211 



Movements of the Blood in Respiratory Organs . . . . 219 



Changes of the Air in Respiration . . . . . . 220 



Changes produced in the Blood by Respiration . . . . 229 



Mechanism of various Respiratory Actions . . . . 231 



Influence of the Nervous System in Respiration . . 236 



Effects of the Suspension and Arrest of Respiration . . 239 



CHAPTER VIII. 



ANIMAL HEAT . . . . . . . . . . . . 242 



Sources and Mode of Production of Heat in the Body . . 246 



CHAPTER IX. 



DIGESTION .. .. .. .. .. .. 255 



Food .. .. .. .'. .. .. ib. 



PASSAGE OF FOOD THROUGH THE ALIMENTARY CANAL . . 264 



The Salivary Glands and the Saliva . . . . . . ib. 



Passage of Food into the Stomach . . . . . . 271 



DIGESTION OF FOOD IN THE STOMACH . . . . . . 273 



Structure of the Stomach . . . . . . . . ib. 



Secretion and Properties of the Gastric Fluid .. .. 279 



Changes of the Food in the Stomach . . . . . . 287 



Movements of the Stomach . . . . . . . . 294 



Influence of the Nervous System on Gastric Digestion . . 298 



Digestion of the Stomach after Death . . . . . . 301 



DIGESTION IN THE INTESTINES . . . . . . 304 



Structure and Secretions of the Small Intestine . . . . ib. 



Valvulse Conniventes . . . . . . . . 305 



Glands of the Small Intestine . . . . . . 306 



TheVilli .. .. .. .. .. .. 312 



Structure of the Large Intestine .. .. .. 315 



The Pancreas, and its Secretion . . . . . . 318 



Structure of the Liver .. .. .. .. 321 



Functions of the Liver . . . . . . . . 328 



The Bile .. .. .. .. .. .. ib. 



Summary of the Changes which take place in the Food 



during its Passage through the small Intestine . . 342 



Summary of the Process of Digestion in the large Intestine 345 



Gases contained in the Stomach and Intestines . . . . 348 



Movements of the Intestines . . . . . . . . 349 



CHAPTER X. 



ABSORPTION . . . . . . . . . . . . 353 



Structure and Office of the Lacteal and Lymphatic Vessels 



and Glands .... ib. 



