626 



Salts, effect on bacteriophagy; 70 

 , effect on secondary culture de- 

 velopment; 190 

 Sanguinaria-bacteriophage, sources of; 



246 

 Sausage, bacteriophage in; 435 

 Secondary cultures, bacteria of; 206 



, behavior of bacteriophage 



in; 196 



, effect of salts on; 190 



, cause of; 215 



, origin of; 188 



, relation to virulence; 183 



Sedimentation of bacteriophage; 280 

 Seiffert hypothesis of bacteriophage; 



314 

 Sensitization to toxin by bacterio- 

 phage; 404 

 Serial action, demonstration of; 40 

 Serum, bacteriophage in; 427 



, effect on bacteriophagy; 71 



Sheep cells, adsorption of bacterio- 

 phage by; 290 

 Silk-worms, bacteriophage races from; 

 256 



, flacherie in; 507 



Silver colloids, effect on bacteriophagy; 



65 

 salts, effect on growth of secon- 

 dary cultures; 190 

 Size of bacteriophage corpuscles; 134, 

 275 



of bacteriophage plaques; 92 



Sodium chloride, effect on bacterio- 

 phage; 301 



fluoride, effect on bacteriophage; 



71, 301 



sulfate, effect on bacteriophage; 



301 



extraction of bacteriophage; 



195 

 Soil, bacteriophage in; 37, 436, 488 



, Dysentery-bacteriophage in; 243 



, Radicicola-bacteriophage in; 260 



Solubility of bacteriophage; 282 

 Species, concept of; 365 

 Specific therapy with bacteriophage; 

 540 



Specificity of antibacteriophagic serum 



action; 389 

 of opsonic action of bacterio- 

 phage; 411 

 Spontaneous attenuation of bacterio- 

 phage; 166 

 Stained preparations in bacteriophagy; 



114, 130 

 Staphylococci, bacterioclysis of; 14, 

 264 



, colony form of; 210 



, heterogeneity of; 265 



, mutations of; 225 



, number dissolved by the bac- 

 teriophage; 54 

 Staphylococcus infections, bacterio- 

 phage in; 483 



, bacteriophage therapy of; 



558 

 Staphylo-bacteriophage, acquired re- 

 sistances to; 192 



, action on dead bacteria; 49 



, adaptation of; 178 



, agglutination by; 74 



, antiphylaxis with; 405 



, attenuation by resistant bac- 

 teria; 198 



, corpuscular nature of; 84 



, effect of acetone on; 303 



, effect of bacterial numbers on; 53 



, effect of chloroform on; 303 



, effect of colloidal silver on; 65 



, effect of dyestuffs on; 67 



, effect of glycerol on; 306 



, effect of pH on multiplication; 



126 



, effect of potassium cyanide on; 



301 



, effect of temperature on; 183, 294 



, effect of viscosity on; 64 



, enumeration by plaque counts; 



98 



, filtrability of; 274 



, fixity of virulences of; 337 



in staphylococcus infections; 483 



, limiting concentration of; 56 



, maximum titre of; 127 



, plaque formation by; 79 



