246 BACTERIOLOGY 



112. B. Strassmanni Trev. 



B. albus-cadaveris Strassmann : Zeitsch. f. Medicinalbeamte, 1888. 

 B. Strassmanni Trevisan : Genera, 1889, 103. 



Morphology. Bacilli 0.7 : 2.5 /x ; filaments. 

 Gelatin colonies. Ameboid, liquefied rapidly ; have a bad odor. 

 Agar slant. Growth crumpled. 

 Potato. Growth thin, whitish yellow, granular. 



Pathogenesis. Mice and guinea pigs die of toxic symptoms with compara- 

 tively small doses. 

 Habitat. Isolated from the blood of a four-days-old cadaver. 



113. B. dysenteriae Kruse 



B. of Japanese dysentery Ogata: Centralblatt f. Bakteriol., XI, 1892, 264. 

 B. dysenteri<z-liquefaciens Kruse : Fliigge, Die Mikroorganismen, 1896, 284. 



Morphology. Bacilli slender rods, mostly in twos. 



Gelatin colonies. With short radiations. 



Gelatin stab. A funnel of liquefied gelatin, which is turbid and has a mem- 

 brane on the surface. 



Pathogenesis. Subcutaneous inoculations of mice cause local oedema. Sub- 

 cutaneous inoculations of guinea pigs cause oedema ; gray knots in the 

 liver, spleen, and large intestines, with hemorrhagic infiltration of the 

 large intestines. 



Habitat. Isolated from a case of Japanese dysentery. 



114. B. Pansini 



B.IX Pansini: Virchow's Archiv, CXXII, 1890. 

 Morphology. Bacilli of variable length. 

 Gelatin colonies. Edged with radiating filaments. 

 Agar slant. Growth gray, transparent, stringy. 



Potato. Growth stains the medium green ; bad odor. Non-pathogenic. 

 Habitat. Isolated from the sputum of a consumptive. 



CLASS V: WITH ENDOSPORES. AEROBIC AND FACULTATIVE ANA- 

 EROBIC. COLONIES ON GELATIN PLATES BECOMING AMEBOID, 

 ETC. GELATIN LIQUEFIED. NOT STAINED BY GRAM'S METHOD, 

 OR INDETERMINATE. 



I. Potato growth whitish to grayish. 



A. Gelatin liquefied rather quickly ; pathogenic. 



115. B. murisepticus Karlinsky. 



1 1 6. B. Wesenbergii. 



