TABLE OF CONTENTS. 



CHAPTER I. 



PAGE, 



The Bacteria in Nai-ceal Waters i 



CHAPTER II. 

 The Quantitative Bacteriological Examination or Water . 25 



CHAPTER III. 

 The Interpretation of the Quantitative Bacteriological 

 Examination 46 



CHAPTER IV. 

 Determination of the Number of Organisms Developing 

 AT THE Body Temperature 57 



CHi\PTER V. 

 The Isolation of Specific Pathogenes from Water ... 67 



CHAPTER VI. 

 Methods for the Isolation of the Colon Bacillus ... 86 



CHAPTER VII. 

 Significance op the Presence of B. Coli in Water ... 112 



CHAPTER VIII. 

 Presumptive Tests for B. Coli 141 



