Xll CONTENTS. 



CHAPTER IY. 



PROXIMATE PRINCIPLES OF THE THIRD CLASS. 



PAGE 



General characters of organic substances Their chemical constitution Hygro- 

 scopic properties Coagulation Catalysis Fermentation Putrefaction 

 Fibrin Albumen Casein Globuline Pepsine Pancreatine Mucosine 

 Osteine Cartilagine Musculine Hsematine Melanine Biliverdine 

 Urosacine Origin and destruction of proximate principles of this class 95-104 



CHAPTER V. 



OF FOOD. 



Importance of inorganic substances as ingredients of food Of saccharine and 

 starchy substances Of fatty matters Insufficiency of these substances 

 when used alone Effects of an exclusive non-nitrogenous diet Organic 

 substances also insufficient by themselves Experiments of Magendie on 

 exclusive diet of gelatine or fibrin Food requires to contain all classes of 

 proximate principles Composition of various kinds of food Daily quantity 

 of food required by man Digestibility of food Effect of cooking . 105-114 



CHAPTER VI. 



DIGESTION. 



Nature of digestion Digestive apparatus of fowl Of ox Of man MASTICA- 

 TION Varieties of teeth Effect of mastication SALIVA Its composition 

 Daily quantity produced Its action on starch Effect of its suppression 

 Function of the saliva GASTRIC JUICE, AND STOMACH DIGESTION Structure of 

 gastric mucous membrane Dr. Beaumont's experiments on St. Martin 

 Artificial gastric fistulse Composition and properties of gastric juice Its 

 action on albuminoid substances Peristaltic action of stomach Time re- 

 quired for digestion Daily quantity of gastric juice Influences modifying 

 its secretion INTESTINAL JUICES, AND THE DIGESTION OF SUGAR AND STARCH 

 Follicles of intestine Properties of intestinal j nice PANCREATIC JUICE, AND 

 THE DIGESTION OP FAT Composition and properties of pancreatic juice Its 

 action on oily matters Successive changes in intestinal digestion The large 

 intestine and its contents 115-161 



CHAPTER VII. 



ABSORPTION. 



Closed follicles and vilii of small intestine Peristaltic motion Absorption 

 by bloodvessels and lymphatics Chyle Lymph Absorbent system Lac- 

 teals and lymphatics Absorption of fat Its accumulation in the blood 

 during digestion Its final decomposition and disappearance . . 162-174 



