CONTENTS ix 



CHAPTER XII. 



PAGE 



"SEWAGE BACTERIA" DESCRIBED BY JORDAN . . .135 



39 ,) LAWS AND ANDREWES . 139 



t> HOUSTON. . . .145 



THERMOPHYLIC BACTERIA . . . . . . 155 



CHAPTER XIII. 



THE CHARACTERISTICS OF THE B. TYPHOSUS . . . .162 

 THE RELATION OF TYPHOID BACILLI TO OTHER PATHOGENIC 



AND NON-PATHOGENIC BACTERIA . . . . .185 

 THE RELATION OF THE TYPHOID BACILLUS TO ACIDS AND 



ALKALIES IN NUTRIENT MEDIA . . ... 187 

 MICRO-ORGANISMS W'HICH RESEMBLE THE B. TYPHOSUS . .188 

 METHODS OF ISOLATING THE B. TYPHOSUS FROM WATER . 1.97 



EXPERIMENTAL RESEARCHES ON THE DURATION OF LIFE OF THE 



B. TYPHOSUS IN WATER AND SEWAGE, ETC. . . . 209 

 CASES IN WHICH THE B. TYPHOSUS HAS BEEN ISOLATED FROM 



WATER SUPPLIES . . . . . . . . 220 



POSSIBILITY OF DIAGNOSING POLLUTION OF W T ATER WITH DEJECTA 



OF ENTERIC FEVER, APART FROM THE ISOLATION OF THE 



TYPHOID BACILLUS . . . . . . . 226 



CHAPTER XIV. 



THE CHARACTERISTICS OF THE SPIRILLUM CHOLERA ASIATICS 236 

 MICRO-ORGANISMS WHICH RESEMBLE THE SPIRILLUM CHOLERA 



ASIATICS 242 



METHODS OF ISOLATING THE CHOLERA SPIRILLUM FROM WATER 



SUPPLIES . . . . . . . 253 



THE VITALITY OF THE CHOLERA SPIRILLUM IN WATER . . 254 

 THE RELATION OF CHOLERA VIBRIOS TO OTHER MICRO- 

 ORGANISMS ..... . 260 



BEHAVIOUR OF SP. CHOLERA IN MEDIA CONTAINING ACIDS 



AND ALKALIES . . . . . 263 



