CONTENTS. 



CHAPTER VII. 



PAGK 



DIGESTION AND ABSORPTION. THE LYMPHATIC SYSTEM 98 



Section I. The Alimentary Canal. Mucous Membrane. Di- 

 visions of the Alimentary Canal. Definition of " Digestion/' 

 Pancreatic Juice. Emulsions. Chyle. Lacteals. Work of 

 the Muscular Walls of the Canal. The Teeth. The Sali- 

 vary Glands. The Stomach. The Gastric Juice. The Liver. 

 The Pancreas. The Digestive Apparatus. Section II. Ab- 

 sorption. Villi. Section III. The Lymphatic System. Tho- 

 racic Duct. Lymph. Lacteals. Section IV. Hinderances to 

 Digestion. Section V. Effects of Alcohol on Digestion. 



CHAPTER VIII. 



RESPIRATION AND THE VOICE 121 



Section I. Air. Respiration. Composition of Air. Nitrogen. 

 Carbonic-acid Gas. Oxygen. Section II. Structure of the 

 Lungs . Section III. The Air- Passages. The Nose. The 

 Nerves of Smell. Breathing through the Nose. Snoring. 

 The Throat. The Larynx. The Trachea. The Bronchi. 

 The Bronchial Tubes. Section IV. Breathing. Process De- 

 scribed. Section V. Changes in the Blood. Section VI. Waste 

 Matters given off by the Lungs. Changes in the Air. Venti- 

 lation. Section VII. The Organs of Voice. Cultivation of the 

 Voice. Section VIII. Effects of Alcohol and Tobacco. 



CHAPTER IX. 



THE NERVOUS SYSTEM 143 



Section I. The Brain. Cerebrum. Cerebellum. Medulla. Con- 

 volutions. The Spinal Cord. Membranes of the Brain and 

 Cord. Gray Matter. White Matter. Nerve-Cells. Nerve 

 Fibers. Section II. Action of the Nervous System. Reflex 



