viii TABLE OF CONTENTS. 



CHAPTER XIV. 



THE ALIMENTARY TRACT AS AN ABSORPTIVE SYSTEM. PAGE 



1. The Problem of Absorption 249 



2. The Physical Character of the Foodstuffs 251 



3. Membranes 254 



4. The Forces Active in Absorption 257 



CHAPTER XV. 



THE ALIMENTARY TRACT AS AN ABSORPTIVE SYSTEM (Continued). 



5. The Absorption of Water 262 



6. Lipoidal Absorption 268 



7. The Absorption of Salts 274 



CHAPTER XVI. 



THE ALIMENTARY TRACT AS AN ABSORPTIVE SYSTEM (Continued). 



8. The Absorption of Carbohydrates 282 



9. The Absorption of Fats 287 



CHAPTER XVII. 



THE ALIMENTARY TRACT AS AN ABSORPTIVE SYSTEM (Concluded). 

 10. The Absorption of Proteins 299 



CHAPTER XVIII. 



THE ALIMENTARY TRACT AS AN EXCRETORY SYSTEM. 



1. General Considerations, Clinical and Experimental 311 



2. The Character of the Alimentary Contents: The Fseces.. . 317 



