x CONTENTS. 



CHAPTER XV. 



PAGE 



THE MODE OF ACTION AND UTILITY OF THE PASTEUR-('HAM- 



BERLAND AND BERKEFELD FlLTERS ..... 26,5 



CHAPTER XVI. 



SUMMARY OF THE PROCEDURE RECOMMENDED FOR THE BAC- 

 TERIOLOGICAL EXAMINATION OF WATER .... 282 

 PREPARATION OF CULTURE MEDIA . . . 284 



BIBLIOGRAPHY ......... 289 



INDEX . 



