458 DESTRUCTION OF TYPHOID AND COLON BACILLUS. 



effect upon their development. Tliey were both members of tlie sub- j 

 tills group. In othei- members of tliis group this peculiarity was absent. |' 

 The typhoid bacillus in several instances outlived its associate crgauism. 

 Jn one instance a gelatin plate made from a tube of sterilized bouillon ! 

 inocuhxted with the typhoid bacillus and a water bacterium one hundred j 

 and sixty days previously, gave characteristic colonies of the bacillus 

 typhi abdomiualis. 



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