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BACILLUS RUBIDUS. 



RED BACILLUS OF WATER. 



Origin. Water. 



Form. Long-, narrow rod; forms threads. 

 Motility. Ac-lively motile. 

 Sporulation. No spores observed. 

 Anilin Dyes. Stain readily. 

 Growth. Fairly rapid. 



Gelatin Plates. Small, yellow, finely granular colonies, with irregular 

 border. Liquefies gelatin. 



Stick Cultures. Liquefies gelatin slowly along line of inoculation. The 

 mass of bacteria settles to the bottom, colored yellowish brown, and a thin 

 folded scum forms on the surface. 



Streak Cultures. On ogar, thin, irregular bordered, slightly folded and 

 colored growth. On potatoes, the most characteristic growth is developed, 

 which spreads and lias a bright brick red color. On blood serum, liquefaction 

 takes place and red pigment forms. 



Oxygen requirements. Is aerobic. 



Temperature. Does not grow at the temperature 

 of body. 



Behavior to Gelatin. Liquefies. 

 Pathogenesis. No effect observed. 



