THE CLASSIFICATION OF BACTERIA 243 



103. B. sulcatus Kruse 



B. sulcatus-liquefaciens Kruse : Fliigge, Die Mikroorganismen, 1896, 318. 



Morphology. Bacilli medium-sized. 



Gelatin colonies. Deep colonies: round, small, yellowish. Surface colonies i 



large, spreading, translucent, incised, marmorated ; liquefaction slow. 

 Agar slant. Growth translucent, gray. 

 Potato. Growth yellowish brown. 

 Habitat. Water. 



104. B. Havaniensis Sternberg 



B. Havaniensis-liqucfaciens Sternberg : Manual of Bacteriology, 1892, 686. 



Morphology. Bacilli of variable length. 



Gelatin colonies. Milky white, surrounded by erose, transparent borders; 



soon liquefied. 



Gelatin stab. Liquefaction along the line of stab, turbid, becoming clear. 

 Agar slant. Growth brownish. No growth on potato. Not pathogenic to 



rabbits. 

 Habitat. Isolated from the surface of the human body. 



105. B. leporis (Sternberg) 



B. leporis-lethalis Sternberg: Manual, 1892, 453. 



Morphology. Bacilli 0.5 : 1-3 /x ; filaments. 



Gelatin colonies. Deep :. round, translucent, light yellow. Surface : trans- 

 parent, resembling small fragments of broken glass ; later liquefaction 

 occurs. 



Gelatin stab. Liquefaction infundibuliform. 



Agar slant. Growth thin, white, translucent, glistening. 



Potato. Growth thin, spreading, light yellow. 



Pathogenesis . Intraperitoneal injections of 1-3 cc. of culture cause in 2-3 

 hours a somnolent condition, with drooping head, and death from 

 toxaemia. 



Habitat. Isolated from the intestines of man ill of yellow fever. 



1 06. B. Madoxi (Miquel) 



Urobacillus Madoxi Miquel : Ann. d. Micrographie, 1889. 



Morphology. Bacilli 0.5-1.0 /x; usually in pairs. 



Gelatin colonies. Small, translucent, milky, with urea in the gelatin, colonies 

 surrounded by a zone of crystals. 



