xii CONTENTS. 



fulfill. Alimentary principles. The composition of the more 

 important foods. Cooking. Alcohol. The advantage of a 

 mixed diet. 293 



CHAPTER XXI. 



THE ALIMENTARY CANAL AND ITS APPENDAGES. 



General arrangement. The teeth. The tongue. The salivary 

 glands. The fauces. The pharynx. The gullet. The 

 stomach. The histology of the gastric glands. The small 

 intestine. The large intestine, The liver. The pancreas. ... 308 



CHAPTER XXII. 



THE LYMPHATIC SYSTEM AND THE DUCTLESS GLANDS. 



Distribution and structure of lymph vessels. The thoracic duct. 

 The serous cavities. The lymphatic glands. The movement 

 of the lymph. The spleen. The thymus. The thyroid body. 

 The supra-renal capsules 329 



CHAPTER XXIII. 



DIGESTION. 



The object of digestion. Uses of saliva. Deglutition. The 

 gastric juice. Gastric digestion. The chyle. The pancreatic 

 secretion. The bile. The intestinal secretions. Intestinal di- 

 gestion. Absorption from the intestines. The digestion of an 

 ordinary meal. Dyspepsia < 334 



CHAPTER XXIV. 



THE RESPIRATORY MECHANISM. 



Definitions. Respiratory organs. The air-passages and lungs. 

 The pleura. The respiratory movements. The structure of 

 the thorax. The mechanism of inspiration. Expiration. 

 Forced respiration. The respiratory sounds. The capacity 

 of the lungs. Hygiene of respiration. The aspiration of the 

 thorax. Influence of respiratory movements upon the flow of 

 blood and lymph 352 



