THE CLASSIFICATION OF BACTERIA 133 



Bacillus of rhinitis-atrophicans Paulsen : Centralblatt f. Bakteriol., XIV, 



1893, 249. 

 Not differentiated sufficiently to distinguish from the preceding. 



27. Bact. Wrightii 



Capsule bacillus of Malory and Wright : Zeitsch. f. Hygiene, XX, 1895, 22 - 



Morphology. Bacilli thick, with considerable variations in size ; length 

 usually 2-3 times their thickness ; ends rounded. Slowly decolorized by 

 Gram's method. 



Gelatin stab. In depth, growth beaded ; no gas ; on the surface, growth 

 translucent, gray, thin, not spreading. 



Agar slant (with I per cent of glucose). Growth grayish, broad, delicate, 

 translucent. 



Bouillon. Turbid, with a delicate iridescent membrane. 



Potato. Growth thin, delicate, colorless ; no gas. 



Milk. Slowly coagulated, acid ; no odor. 



Pathogenesis. Inoculations of mice cause death in 1-3 days with septicaemia. 

 Subcutaneous inoculation of guinea pigs, a local suppuration ; intraperito- 

 neally, 0.2 cc., septicaemia and much colorless slimy exudate, death in 24 

 hours. Rabbits, 0.5 cc. into ear vein, death in 24 hours. Septicaemia and 

 slimy exudate in body cavities. 



Habitat. Isolated from a case of bronchopneumonia. 



VARIETIES 



Capsule bacillus of Nicolaier : Centralblatt f. Bakteriol., XVI, 1894, 60 1. 

 From purulent nephritis. Indt. from the preceding. 



Keratomalacia infantum capsule Bacillus Loeb : Centralblatt f. Bakteriol., X, 

 1891, 369. 



28. Bact. sputigenum 



Bacillus aerogenes-sputigenus-capsulatus Herla: Archiv de Biol., XIV, 1895, 403. 



Morphology. Bacilli thick, oval, rounded ends, often rather curved. Older 

 cultures show filaments. Occur singly, now and then in twos. In bloo, 

 preparations a capsule. 



Gelatin colonies. Deep colonies remain very small. Surface colonies gray- 

 white, with later a transparent border. 



Gelatin stab. A nail-shaped growth, gray, not porcelain-white. 



Agar slant. Growth grayish white, slimy. 



