TABLE OF CONTENTS 



CHAPTER I 



PAGE 



THE BACTERIA IN NATURAL WATERS i 



CHAPTER II 



THE QUANTITATIVE BACTERIOLOGICAL EXAMINATION or WATER. . 29 



CHAPTER III 



THE INTERPRETATION OF THE QUANTITATIVE BACTERIOLOGICAL 

 EXAMINATION 51 



CHAPTER IV 



DETERMINATION OF THE NUMBER OF ORGANISMS DEVELOPING AT 

 THE BODY TEMPERATURE 61 



CHAPTER V 

 THE ISOLATION OF SPECIFIC PATHOGENES FROM WATER 74 



CHAPTER VI 



THE COLON GROUP OF BACILLI AND METHODS FOR THEIR ISOLATION 99 



xiii 



