INDEX 



625 



Pf affi-bacteriophage in avian typhosis ; 



492 



, sources of; 246 



Pfreimbter, Sell and Pistorius method 



of determining virulence; 147 

 Phagocytosis, effect of bacteriophage 



on; 408 



of bacteriophage; 383 



Phenol, adaptation of bacteriophage 



to; 346 



, effect on bacteriophage; 303 



Phosphates, effect on bacteriophagy; 71 

 , effect on growth of secondary cul- 

 tures; 190 

 Physical state of bacteriophage; 273 

 Plague, bacteriophage in; 503 



, bacteriophage races from; 247 



, bacteriophage therapy of; 567 



Plants, bacteriophage in; 259, 487 

 Plaque formation by bacteriophage; 



76, 337 



, conditions controlling; 88 



, effect of temperature on; 91 



, index of multiplication; 116 



, inhibition of; 90 



on gelatine; 90 



, relation to virulence; 139 



method, purification by; 158 



Plaques, bacteriophage in; 94 



, characters of; 92 



, enumeration of bacteriophage 



corpuscles by; 96 



, limitation of size of; 95 



, size of; 92 



, source of; 87 



Potassium chloride, effect on bacteri- 

 ophagy; 71 



cyanide, effect on bacteriophage; 



301 

 Precipitation of bacteriophage; 287 

 Pressure, effect on bacteriophagy; 63 

 Prophylactic immunization with bac- 

 teriophage; 509 

 Proteus-bacteriophage, virulences of; 



257 

 Protobe, meaning of; 360 

 Protobios bacteriophagus, a living virus; 

 355 



Pseudobacteriophagy; 266 

 Purification of bacteriophage races; 



156 

 Pus, bacteriophage in; 37, 248, 483 

 Pyelocystitis, bacteriophage therapy 



of; 553 



, mixed cultures in; 233 



Pyelonephritis, bacteriophage in; 484 



Quinine derivatives, effect on bac- 

 teriophage; 71, 304 



Rabbits, intestinal bacteriophage of; 



431 

 Radicicola-bacteriophage, effect of ir- 

 radiation on; 292 



, effect of temperature on; 297 



in plants; 487 



, sources of; 259 



Radium, effect on bacteriophage; 292 

 Rats, Pestis-bacteriophage in; 247, 



504 

 Refractile index of bacteriophage; 



134 

 Resistance, effect on agglutinability; 

 218 



in B. coli, loss of; 421 



, loss of bacterial; 204 



, mode of acquisition; 194 



of bacteria, acquired; 217 



of bacteria, natural; 217 



of bacteria, significance of; 182 



to antibacteriophagic sera; 386 



Resistant B. coli in infections; 484 



B. typhi murium; 254 



bacteria, biochemistry of; 218 



, destruction of bacterio- 

 phage by; 195, 211 



, development by antiserum; 



203 



, effect on virulence; 196 



, fixation to; 107 



, morphology of; 219 



, pathogenicity of; 219 



, vitality of; 218 



forms of staphylococci; 265 



Rupture of bacteria during bacteri- 

 ophagy; 113 



