CONTENTS. 



INTRODUCTORY: THE CHEMICAL BASIS OF THE CELL. 



CHAPTER I. Page 



The Scope of Physiology The Physico-chemical Basis of Life 

 The Chemical Basis of Animal Tissues Water Proteins 

 Lipoids Carbohydrates 17 



CHAPTER II. 



THE INFLUENCE OF PHYSICO-CHEMICAL LAWS ON 

 PHYSIOLOGICAL PROCESSES: ENZYMES. 



Properties of Crystalloids Osmotic Phenomena in Cells Reac- 

 tion of Body Fluids Colloids General Nature of Enzymes 

 or Ferments ' 26 



CHAPTER III. 

 DIGESTION: NECESSITY AND GENERAL NATURE. 



Digestion in the Mouth The Salivary Glands The Nerve Supply 

 of the Salivary Glands The Reflex Nerve Control of the Sali- 

 vary Secretion The Normal Stimulus for Salivary Secretion 

 (Direct and Psychological) General Functions of Saliva 37 



CHAPTER IV. 



DIGESTION: THE CHEMISTRY OF SALIVA AND THE 

 RELATIONSHIP OF SALIVA TO DENTAL CARIES. 



Organic and Inorganic Constituents The Reaction of Saliva The 

 Method of Measurement of Neutralizing Power of Saliva 

 The Deposition of Tartar and Calculi 46 



CHAPTER V. 

 DIGESTION. 



Mastication Deglutition or Swallowing Vomiting 53 



vii 



