CONTENTS xi 



CHAPTER V 

 A STUDY OF STIMULANTS, NARCOTICS, AND POISONS PAGB 



1. DEFINITION OF STIMULANT, NARCOTIC, AND POISON: Defini- 



tion of a Stimulant Definition of a Narcotic ... 62 



2. TEA AND COFFEE : Use and Abuse of Tea Use and Abuse 



of Coffee 63 



3. TOBACCO: Effect of Tobacco on Growth Tobacco and 



Athletics 64 



4. ALCOHOL : Alcohol as a Possible Food Alcohol as a Stimu- 



lant, a Narcotic, and a Poison Business Argument for Total 

 Abstinence Total Abstinence and Life Insurance The 

 Effect upon Dogs of Moderate Drinking of Alcohol . . 66 



CHAPTER VI 

 A STUDY OF BLOOD MANUFACTURE 



Definition of Digestion Parts of the Alimentary Canal Diges- 

 tive Glands 75 



1. THE MOUTH CAVITY: Walls of the Mouth Cavity Mucous 



Membrane .......... 77 



2. THE TEETH : Arrangement of the Teeth Kinds of Teeth 



Dental Formula Milk Teeth Structure of Teeth . 77 



3. THE TONGUE : Structure of the Tongue Functions of the 



Tongue 81 



4. THE SALIVARY GLANDS : Position and Action of the Salivary 



Glands Microscopical Structure of the Salivary Glands 

 Uses of Saliva 82 



5. THE THROAT CAVITY: The Uvula The Air Passages and 



the Epiglottis Breathing and Swallowing The Eusta- 

 chian Tubes The Process of Swallowing . . .84 



6. THE ESOPHAGUS Structure of the Esophagus Function 



of the Esophagus 87 



7. THE STOMACH: Position, Shape, Size The Mucous Lining 



and Gastric Glands Blood Supply of the Stomach 

 Muscles of the Stomach Digestion in the Stomach 

 Digestion of Proteids 88 



8. THE SMALL INTESTINE: Position and Shape Peritoneum 



Functions of the Small Intestine Adaptations for Ab- 

 sorption The Villi 92 



9. THE LARGE INTESTINE : Position, Form, Size Ileo-caecal 



Valve Vermiform Appendix 96 



10. THE PANCREAS : Position, Form, Size Structure of the 

 Pancreas Functions of the Pancreatic Juice Digestion 

 of Fats 97 



