THE CLASSIFICATION OF BACTERIA 237 



82. B. putidus Roger 



B. septicus-putidus Roger : Revue de Med., 1893, 10. 



Morphological and cultural characters like B. vulgaris. 

 Habitat. Isolated from a cholera corpse. 



83. B. albus-putidus Maschek 



Adametz, Die Bak. Nutz u. Trinkwasser, 1888. 



From descriptions, not differentiated from the preceding. 

 Habitat. Water. 



84. B. tachyctonus (Fischer) 



Bact. tachyctonum Fischer: Deutsche med. Wochensch., 1894, Nos. 26-28. 



Morphology. Bacilli medium-sized to filaments. 



Gelatin colonies. Like cholera. 



Gelatin stab. Liquefaction crateriform, becoming saccate ; with a membrane. 



Bouillon. Gas production, with a membrane. 



Agar slant. Growth brownish. 



Potato. Growth grayish brown, becoming reddish brown. 



Pathogenesis . Subcutaneous and intraperitoneal inoculations of not too small 



quantities cause septicaemia and bloody oedema in mice, guinea pigs, and 



rabbits. 

 Habitat. Isolated from faeces in cholera nostras. 



85. B. dubius Kruse 



Fliigge, Die Mikroorganismen, 1896. 



Zur Bak. Differentialdiagnose der Cholera (Bacillus not named) Bleisch : Zeitsch. 

 f. Hygiene, XIII, 1893, 31. 



Differs from the preceding in that the growth is pale yellow from the beginning. 



On bouillon there is no membrane, and the cultures are less virulent. 

 Habitat. Isolated from faeces. 



86. B. gasoformans Eisenberg 



Bak. Diag., 1891, 107. Tils : Zeit. f. Hygiene, IX, 1890, 315. 



Morphology. Bacilli small. 



Gelatin colonies. Round, crateriform, spread rapidly. 



Gelatin stab. Liquefaction saccate, turbid, with much gas. 



Agar slant. Growth dirty white. 



Potato. Growth light yellowish. 



Habitat. Water. 



