CONTEXTS. XV11 



'CHAPTER x. 



THE CHEMICAL PROCESSES WHICH HAVE THEIR SEAT IN THE IN- 

 TESTINES AND WHICH ARE THE RESULTS OF THE ACTIVITIES 

 OF MICRO-ORGANISMS. THE PRODUCTS OF THESE PROCESSES. 



PAGE 



Introductory Remarks 418 



SECT. 1. THB DECOMPOSITION OF THE PKOTEIDS UNDER THE INFLUENCE OF 



BACTERIAL ACTION 419 



1. Indol 421 



2. Skatol 424 



3. a-Skatolcarbonic Acid 426 



Derivatives of Tyrosine found in the Products of the Bacterial De- 

 composition of Proteids 428 



Hydroparacumaric Acid 429 



Para-oxyphenyl-acetic Acid 430 



Phenyl-acetic and Pheuyl-propionic Acids 430 



Phenaceturic acid 432 



Phenols resulting from the Putrefactive Decomposition of Tyrosine. 



Parakresol. Phenol 432 



Non-occurrence of Ptomaines as Products of Normal Intestinal De- 

 composition 435 



SECT. 2. THE DECOMPOSITION OF THE CARBO-HYDRATES IN THE SMALL INTESTINE 



UNDER THE INFLUENCE OF BACTERIAL ACTION .... 436 



SECT. 3. THE DECOMPOSITION OF THE FATS IN THE SMALL INTESTINE UNDER 



THE INFLUENCE OF BACTERIAL ACTION 438 



SECT. 4. THE GASES OF THE SMALL INTESTINE 438 



OF THE 



UNIVERSITY 



CHAPTER XL 



A BRIEF SURVEY OF THE PROCESSES OCCURRING IN THE SMALL 

 INTESTINE IN RELATION ONE TO THE OTHER. THE DESTRUCTION 

 OF THE DIGESTIVE ENZYMES. 



Newly-discovered Facts tending to prove that none of the water 



ingested is absorbed by the stomach, but passes into the intestine 439 



Recapitulation of the Chemical Processes occurring in the Small 



Intestine 443 



