CONTENTS. 11 



PAGE 



Pancreatic Juice 281 



Succus Entericus 285 



The Secretion of Pancreatic Juice and of Bile . . 286 



The Structure of the Intestines : The Small Intestine 292 



The Muscular Mechanisms of Digestion 293 



The Changes which the Food Undergoes in the Alimentary Canal 306 



The Changes in the Stomach 306 



In the Small Intestine 308 



In the Large Intestine 312 



The Feces 313 



The Lacteals and the Lymphatic System 313 



The Nature and Movements of Lymph (including Chyle) 314 



The Characters of Lymph 315 



The Movements of Lymph 317 



Absorption from the Alimentary Canal 325 



The Course Taken by the Several Products of Digestion 325 



The Mechanism of Absorption . . 329 



CHAPTER II. 

 RESPIRATION. 



The Mechanics of Pulmonary Respiration 333 



The Respiratory Movements 339 



Changes of the Air in Respiration 344 



The Respiratory Changes in the Blood 346 



The Relations of Oxygen in the Blood 350 



Products of the Decomposition of Haemoglobin 358 



The Relations of the Carbonic Acid in the Blood 360 



The Relations of the Nitrogen in the Blood 361 



The Respiratory Changes in the Lungs : The Entrance of Oxygen 361 



The Exit of Carbonic Acid 364 



The Respiratory Changes in the Tissues 365 



The Nervous Mechanism of Respiration 369 



The Effects of Changes in the Composition and Pressure of the Air Breathed . . 386 



The Relations of the Respiratory System to the Vascular and Other Systems . . 390 



Modified Respiratory Movements 403 



CHAPTER III. 

 THE ELIMINATION OF WASTE PRODUCTS. 



The Composition and Characters of Urine 404 



Amounts of the Several Urinary Constituents Passed in Twenty-four Hours. 



(After Parkes.) 409 



The Secretion of Urine . . 410 



Secretion of the Renal Epithelium 417 



The Discharge of Urine 426 



Micturition 427 



The Nature and Amount of Perspiration 431 



Cutaneous Respiration 432 



The Mechanism of the Secretion of Sweat 434 



