CONTENTS. 



PAGE 



INTRODUCTION . i 



CHAPTER I. 



THE HISTORY OF THE COMMA-BACILLUS 5 



CHAPTER II. 



THE DISTRIBUTION OF COMMA-BACILLI 22 



CHAPTER III. 



MORPHOLOGY OF THE CHOLERAIC COMMA-BACILLI 40 



CHAPTER IV. 



CHARACTERS OF THE COMMA-BACILLI IN ARTIFICIAL 



CULTIVATIONS . 6 1 



