CONTENTS. xi 



PAGE 



SECT. 9. SEATS OF FORMATION OF THE Mucus, PEPSIN, AND HYDROCHLORIC ACID 



IN THE STOMACH. .THE ANTECEDENTS OF THESE BODIES . . 100 



Secretion of Mucus 100 



The Pyloric Glands and the Pyloric Juice 100 



Pepsinogen 101 



The Experiments of Klemensiewicz and Heidenhain on the Pyloric 



Secretion 104 



The Glands of the Fundus. The Cells which produce Pepsin and 



the Cells which produce Acid 105 



Histological Characters of the Gastric Glands during Fasting and 



Digestion, and Kelation of these to the Amount of Pepsin present 106 



The Seat of the Formation of the Acid of the Gastric Juice . . 107 

 Theories as to the Mode of Production of the Acid of the Gastric 



Juice 110 



Variations in the Proportion of Pepsin and Acid in the Gastric Juice 114 



SECT. 10. THE ACTION OF THE GASTRIC JUICE, AND ITS CONSTITUENTS, ON THE 



PROTEIDS 114 



The Researches and Views of Meissner 114 



Briicke's Views on the Digestion of Proteids 116 



The Eesearches of Schiitzenberger 116 



Kiihne's Observations and Theoretical Views 117 



Antialbumat and Antialbumid 120 



The Albumoses 121 



Antialbumose 123 



Hemi-albumose and the Albumoses 124 



Peptones 134 



Methods of Preparation of Ampho-peptone 136 



Distinguishing Characters of Peptones 138 



Chemical Composition of the Peptones 141 



The Relations of Peptones to the Proteids from which they are derived 144 

 The Action of the Gastric Juice upon the so-called 'Albuminoid' 



Bodies 144 



SECT. 11. THE MILK-CURDLING ENZYME (OR RENNET-ENZYME) OF THE STOMACH . 147 



SECT. 12. ASSUMED EXISTENCE OF A LACTIC ACID FERMENT IN THE STOMACH . 151 



SECT. 13. THE PROCESS OF DIGESTION IN THE LIVING STOMACH .... 151 



General Sketch of Digestion in the Living Stomach .... 152 



The Changes which Adipose Tissue undergoes in the Stomach . . 155 



The Changes which Starch undergoes in the Stomach . . . 155 



Changes in the Acidity of the Contents of the Stomach during 



Digestion 157 



Duration of the Digestive Process in the Stomach .... 159 

 The Final Products of Digestion which leave the Stomach. The 



Chyme 160 



SECT. 14. THE NON-DIGESTION OF THE STOMACH BY ITS JUICE .... 160 



The Physiological Action of Albumoses and Peptones . . . 161 



SECT. 15. THE PROCESS OF GASTRIC DIGESTION IN DISEASE 163 



The Gastric Juice in Disease 165 



On the Influence of Changes in the Acidity of the Gastric Juice in 



Disease . . 167 



