THE CLASSIFICATION OF BACTERIA 153 



82. Bact. Bossonis 



Bacillus uber eine neut Infektionskrank. des Rindviehs Bosso : .Centralblatt 

 t BakterioL. XXII, 1897, 537; XXIII. 1898, 318. 



Morphology. Bacilli 0.5-0.8 : 1.5-2.7^. 



Gelatin colonies. Round, raised. Microscopically, round irregular, light 

 yellow, marmorated ; often semilunar colonies. 



Gelatin stab. In depth, confluent yellowish colonies. On surface, growth 

 round, raised. 



Agar slant. White straw-yellow colonies, becoming confluent ; water of 

 condensation turbid. 



Potato (alkaline). 37 C, an abundant growth of transparent drops, with 

 slight tendency to become confluent ; on acid potato, but slight growth. 



Milk. Not coagulated, acid. 



Glucose bouillon. 37 turbid, much odorless gas and abundant sediment ; at 

 room temperatures but slight growth. Indol negative. 



Pathogenesis. Subcutaneous inoculations of guinea pigs cause death in 36 

 hours ; strong hyperemia of the intestinal viscera, peritoneum, and kid- 

 neys ; spleen not enlarged ; lungs and pleura normal ; bacilli in spleen 

 and kidneys, also in the black clotted blood. 



Habitat. Associated with an infectious disease of cattle, septicaemia. 



83. Bact. Czaplewskii 



Bacillus bei Keuchhusten Czaplewski : Centralblatt f. BakterioL, XXII, 1897, 641. 

 Morphology . Bacilli very minute, like Bact. influenza. Grow best at 37 . 



Bacilli in young cultures show polar stain. 

 Gelatin slant. A narrow, grayish stripe. 

 Gelatin stab. In depth, growth beaded, whitish yellow ; on the surface, colony 



small, grayish, rather dry. 

 Bouillon. 37 C, scarcely turbid ; sediment stringy. 

 Potato. No growth observed. 



Pathogenesis . Inoculation experiments either negative or inconclusive. 

 Habitat. Isolated from sputum in whooping cough. 



84. Bact. ureae (Miquel) Leube 



B. urea Miquel : Bull. Soc. Chimiq d. Paris, XXXI, 1879. 391. 

 Bact. urea Leube : Virchow's Archiv, C, 1885, 540. 



Morphology. Bacilli 1.0 : 1.5-2.6 /x. Grow very slowly. 

 Gelatin colonies. Flat, spreading, irregular. Ferment urine. 

 Habitat. Isolated from urine. 



