CONTENTS 



CHAPTER PAGE 



INTRODUCTION . 



I. STERILISATION AND THE PREPARATION OF CULTURE MEDIA 1 



II. THE STAINING AND MICROSCOPIC EXAMINATION OF MICRO- 

 ORGANISMS 42 



III. THE EXAMINATION OF WATER FOR MICRO-ORGANISMS . . 60 



IV. THE BACTERIAL CONTENTS OF VARIOUS WATERS . . 83 

 V. THE PURIFICATION OF WATER FOR DRINKING PURPOSES . 117 



VI. ON THE MULTIPLICATION OF MICRO-ORGANISMS . . . 217 



VII. THE DETECTION OF PATHOGENIC BACTERIA IN WATER . 257 



VIII. THE VITALITY OF PARTICULAR PATHOGENIC BACTERIA IN 



DIFFERENT WATERS 286 



IX. THE ACTION OF LIGHT ON MICRO-ORGANISMS IN WATER 



AND CULTURE MEDIA 333 



APPENDIX, CONTAINING TABULAR DESCRIPTIONS OF THE VARIOUS 



MICRO-ORGANISMS FOUND IN WATER .... 395 



INDEX . 521 



