10 CONTENTS 



CHAPTER III. VIRULENCE OF THE BACTERIOPHAGE 



Multiple virulence 96 



Persistence of virulence 97 



Bacterial species attacked 103 



Bacillus dysenteriae Shiga 104 



Bacillus dysenteriae Hiss 105 



Bacillus dysenteriae Flexner 105 



Bacillus dysenteriae "X" 106 



Bacillus coli 107 



Bacillus typhosus 107 



Bacillus paratyphosus A 108 



Bacillus paratyphosus B 108 



Salmonella (hog cholera) 108 



Bacillus typhi murium. ". 108 



Bacillus proteus 109 



Bacillus gallinarum (Klein), B. gallinarum (Moore); paragalli- 



narum 109 



Bacterium diphtheriae 110 



Staphylococcus 110 



Bacterium of barbone 110 



Bacillus pestis Ill 



Bacillus of flacherie Ill 



Bacillus subtilis Ill 



Vibrio choLerae Ill 



CHAPTER IV. THE BACTERIOPHAGOUS ULTRAMICROBE 



Morphology 113 



Vitality 115 



Susceptibility to different agents 116 



Unicity of the bacteriophage 120 



The lysins of the bacteriophage 123 



Opsonic power of the lysins 125 



CHAPTER V. THE BACTERIOPHAGOUS ANTISERUM 



Complexity of the antibodies 130 



Antibodies to the bacteria 132 



Antibodies to the bacterial toxins 132 



Antibodies to the bacteriophagous ultramicrobes 134 



Antibodies to the lysins 138 



Incidental conditions resulting from the existence of the bacteriophage. 141 



CHAPTER VI. THE NATURE OF THE BACTERIOPHAGE 

 The nature of the bacteriophage 144 



