XX TABLE OF CONTENTS 



CHAPTER 



.PAGE 



IV. STIMULANTS AND NARCOTICS . , .. 64 



I. Definitions ...,,.. 34- 



II. Beverages . , ' . - , . vi5 



III. Tobacco ... . ' , , , . 75 



IV. Drugs and Patent Medicines 7b 



V. DIGESTION AND ABSORPTION OF THE NUTRIENTS . . 82 



I. General Survey of the Digestive System . . 82 



II. The Mouth Cavity and its Functions . , . 84 



III. (Optional.) The Throat Cavity and Gullet 



and their Functions . . . ' f . 92 



IV. The Stomach and its Functions . . '.' . 93 

 V. The Small Intestine and its Functions / . 97 



VI. (Optional.) The Large Intestine and its Func- 

 tions . '"'. j '-''i ;.>' . 1 "I* . 98 

 Vtt. Absorption from the Alimentary Canal . . 98 

 VIII. (Optional.) The Liver and its Functions . . 101 

 IX. Hygiene of Digestion . . . . , .102 



VI. CIRCULATION OF THE NUTRIENTS . . . . . 107 



I. Composition of the Blood 107 



II. Circulation and its Organs 108 



III. The Heart 109 



IV. The Blood Vessels .... .112 

 V. Circulation of the Blood ... .117 



VI. Hygiene of the Circulation 119 



VII. RESPIRATION AND THE PRODUCTION OF ENERGY IN 



MAN . 122 



I. Necessity for Respiration 122 



II. Adaptations for securing Oxygen and for excreting 



Carbon Dioxid 124 



III. The Process of Breathing 129 



IV. Hygiene of the Respiratory Organs .... 132 



