X CONTENTS. 



PAGE 



Characters of so-called 'Paralytic' Submaxillary Saliva 'Antilytic' 



secretion 32 



4. Sublingual Saliva 33 



5. The Secretion of the Glands of the Mucous Membrane of 



the Mouth and Tongue 34 



SECT. 3. THE DIASTATIC ENZYME OF SALIVA AND THK ACTION WHICH IT EXERTS 



UPON STARCH 36 



Historical Sketch 36 



Attempts to separate the Diastatic Enzyme of Saliva ... 38 

 Brief Outline of the Changes which Starch undergoes under the 



influence of the Salivary Enzyme ...... 39 



Conversion of Gelatinous into Soluble Starch 39 



Production of Erythrodextrin, Achroodextrin, Maltodextrin and 



Maltose . 40 



Maltose 47 



SECT. 4. EXCRETION OF MEDICINAL SUBSTANCES IN THE SALIVA .... 51 



SECT. 5. CHANGES WHICH THE SALIVA UNDERGOES IN DISEASE .... 52 



Salivary Concretions 52 



Tartar of the Teeth 53 



SECT. 6. DIRECTIONS FOR THE QUANTITATIVE ANALYSIS OF SALIVA ... 54 



Determination of the Diastatic Value of Saliva. 'Diastasimetry.' . 56 



CHAPTER II. 



GASTEIC DIGESTION. 



SECT. 1. INTRODUCTORY. ON THE STRUCTURE OF THE STOMACH OF MAN AND 



CARNIVOROUS ANIMALS 60 



SECT. 2. SOME HISTORICAL PRELIMINARIES. ON THE NATURE OF GASTRIC DIGES- 

 TION, AND THE CHARACTER AND PROPERTIES OF THE GASTRIC JUICE 64 



SECT. 3. METHODS OF OBTAINING GASTRIC JUICE 70 



Gastric FistulaB established by accident in Man 71 



SECT. 4. THE MORE OBVIOUS PHENOMENA ATTENDING SECRETION OF THE GASTRIC 



JUICE. THE INFLUENCE OF THE NERVOUS SYSTEM UPON IT . . 76 



SECT. 5. PHYSICAL AND CHEMICAL CHARACTERS OF THE GASTRIC JUICE . . 79 



SECT. 6. ARTIFICIAL GASTRIC JUICE 81 



Chemical Agents which influence Peptic Digestion . . . 84 



SECT. 7. AN ACCOUNT OF THE ATTEMPTS TO SEPARATE PEPSIN AND TO ESTABLISH 



ITS CHARACTERS 85 



Pepsin 85 



SECT. 8. THE ACID (OR ACIDS) OF THE GASTRIC JUICE 90 



Certain Colour Eeactions depending upon the nature of the Acid of 



the Gastric Juice 92 



Is the Acid of the Gastric Juice free Hydrochloric Acid ? . . . 95 



The Eesearches of Eichet 96 



Lactic and Butyric Acids in the Gastric Juice 99 



