CONTENTS 



XVll 



PAGE 



CHAPTEB XXXVII. COMPOSITION OF FOODS 304 



Content of foods; Use of foodstuffs; Building material; 

 Fuel; Quantity and kind of food; Selection of food; 

 Adulteration ; Cooking. 



CHAPTER XXXVIII. DIGESTIVE SYSTEM 310 



Introduction; Alimentary canal;. Digestive glands; The 

 mouth; Teeth; Structure of tooth; Care of the teeth; The 

 tongue; Salivary glands; Throat or pharynx; Esophagus; 

 Stomach; Intestines; Liver; Pancreas; Peritoneum and 

 mesentery. 



CHAPTER XXXIX. DIGESTION 321 



Introduction ; Necessity of digestion ; Action upon food ; 

 Digestion in mouth; Digestion in stomach; Digestion in 

 intestine; Large intestine; Absorption. 



CHAPTER XL. NARCOTICS AND STIMULANTS 328 



Characteristics; Stimulants; Tobacco; Opium and other 

 narcotics; Alcohol; Conclusion. 



CHAPTER XLI. CIRCULATORY SYSTEM 334 



Introduction; Blood; Lymph; Red corpuscles; White cor- 

 puscles; Coagulation; Amount of blood; The heart struc- 

 ture; Action of heart; Beat; Blood and lymph vessels; 

 Lymph vessels. 



CHAPTER XLII. RESPIRATORY SYSTEM 345 



Need of air; Oxidation; Internal and external respiration; 

 Organs of respiration; Nose cavity; Larynx; The lungs; 

 The pleura; Mechanism of breathing; Comparison of in- 

 haled and exhaled air; Necessity of ventilation; Methods 

 of ventilation; Diseases of the respiratory organs; Ade- 

 noids; Tonsils; Pleurisy; Contagious diseases. 



CHAPTER XLIII. EXCRETORY SYSTEM 357 



General ; The kidneys ; The skin ; Structure ; Sweat glands ; 

 The hair; The nails; Temperature of the body; Source 

 of heat; Cooling the body; Clothing; Care of the skin. 



CHAPTER XLIV. DUCTLESS GLANDS 367 



Introduction; Lymph glands; Adrenal bodies; Thyroid 

 glands; The spleen; The pancreas. 



