629 



Virulence range of bacteriophage in 

 fowl diseases; 246 



■ — of Dysentery-bacteriophage; 



242 



— — , relation to multiplication of bac- 

 teriophage; 140 



, relation to plaque formation; 



139 



, relation to secondary cultures; 



183 



, restoration of; 165 



, specificity of; 168 



variations in bacteriophage; 137, 



159, 352, 437 



, Werthemann expression of; 145 



Virulences of bacteriophage in fowl; 

 429 



of bacteriophage in horses; 425, 



432 



of bacteriophage in man; 419 



of bacteriophage in normal ani- 

 mals; 431 



of bacteriophage, multiple; 170, 



432 



of Cholera-bacteriophage; 263 



of Diphtheria-bacteriophage; 259 



of Enteritidis-bacteriophage; 254 



of Enterococcus-bacteriophage; 



266 



of Paratyphoid-bacteriophage ; 



252 



of Pestis-bacteriophage; 247 



of Pfaffi -bacteriophage; 246 



of Proteus-bacteriophage ; 257 



Virulences of Radicicola-bacterio- 



phage; 260 



of Sanguinaria-bacteriophage; 246 



of Staphylo-bacteriophage; 265 



of strangles streptococci; 361 



of Suipestifer-bacteriophage; 254 



of Typhi murium-bacteriophage; 



254 

 of Typhoid-bacteriophage; 248, 



334 



, proof of multiple; 172 



Virulences, retention of; 285 



, variation in attenuation of; 306 



Virus nature of bacteriophage; 358 

 Viruses, adsorption of; 291 

 Viscosity, effect on bacteriophage 



fixation; 108 



, effect on bacteriophagy; 63, 216 



Vitality of bacteriophage; 166, 283 



of resistant bacteria; 218 



Volatility of bacteriophage; 8, 277 



Water, antiseptic action of; 8 



, bacteriophage in; 12, 37, 243, 251, 



436 



, flocculation of bacteriophage by; 



301 



Werthemann method of expressing 

 virulence; 145 



Wound infections, bacteriophage ther- 

 apy of; 564 



Zoochlorella vulgaris, parasitic action 

 of; 318 



