TABLE OF CONTENTS. 



CHAPTER I. 



PAGE 

 OF LIFE AND ITS CONDITIONS, 25 



CHAPTEE II. 



OF THE DISTINCTIVE CHARACTERISTICS OF MAN, ... 39 



CHAPTER III. 



ON THE MINUTE ANATOMY OF THE CONNECTIVE TISSUES, CELLS, AND 



THEIR DERIVATIVES, ..... 57 



CHAPTER IV. 



CHEMICAL COMPOSITION OF THE BODY, . . , . 80 



CHAPTER V. 



OF FOOD AND THE DIGESTIVE PROCESS. 



1. Of Food and Drink, their Nature and Destination, 100 



2. Of Hunger and Thirst; Starvation, 120 



3. Movements of the Alimentary Canal, ........ 127 



Prehension and Ingestion, ......... 127 



Mastication, 128 



Deglutition, 129 



Movements of the Stomach, ......... 133 



Peristaltic Movement of Intestines, ....... 137 



Defecation, ............ 141 



4. Of the Changes which the Food undergoes, during its passage along the 



Alimentary Canal, .......... 143 



Salivary Secretion, and Buccal Digestion, ...... 144 



Gastric Juice, and Gastric Digestion, . . . . . . .151 



Intestinal Digestion ; Pancreatic Secretion, ...... 167 



Biliary Secretion, ........... 173 



Intestinal Secretion, ........ . 177 



