INDOL PRODUCTION BY BACTERIA 477 



Pasteurella aviseptica (Mulsow, Kolle and Wassermann) 



Proteus group (Bengston, Horowitz, Kligler, Larson and Bell, Rhein, Sicre) 



Pseudomonas pyocyanea* (Jordan) 1[ 



Vibrio cholerae (2 strains*, Crossonini, Baudisch, Zipfel, Tobey) 



finklerei (Crossonini, Tobey, Zipfel) 



metschnikovi* (Crossonini, Steensma, Tobey) 



protea* 



* Our tests. 



^ We found 13 strains — ,6 of them freshly isolated; Jordan reported both + 

 and — ; see also Lartigau (1898) 



REFERENCES 



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 Chen and Rettger 1920 A correlation study of the colon-aerogenes group 



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soil. Jour. Bact., 6, 253. 

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