THE CLASSIFICATION OF BACTERIA 223 



Pathogenesis. Subcutaneous inoculations of rabbits cause death in 24 hours ; 

 a local oedema ; serous membrane inflamed ; spleen enlarged ; bacilli in 

 all the organs. Subcutaneus inoculation of guinea pigs causes local ab- 

 scess formation ; intraperitoneal inoculation causes death. Chickens and 

 pigeons refractory. 



Habitat. Associated with a spontaneous epizootic of rabbits. 



50. B. venenosus Vaughan 



Am. Jour. Med. Sci., 1892, 107. 



Morphology. Bacilli 2-4 times their breadth ; ends rounded. 



Gelatin colonies. Aerogenes-like. 



Agar slant. Growth thin, white. 



Potato. Growth moist, glistening, light brown. In Parietti's solution a good 



growth. In Uffelman's gelatin a feeble to a good growth. 

 Pathogenesis. Pathogenic to rats, mice, guinea pigs, and rabbits. 

 Habitat. Water. 



51. B. glischrogenus Malerba 



Malerba and Sanna-Salaris : Lavori Esequiti nell Institute fisiologico, Napoli, 1888. 

 Characters of Bact. aerogenes. Milk and urine rendered slimy. 

 Pathogenesis. Pyogenic to the smaller animals. Causes nephritis in dogs. 

 Habitat. Isolated from urine. 



52. B. albus Paglinni 



Giorn della Soc. Ital. d'igiene, IX, 1887, 587. 

 Weisser bacillus Eisenberg : Bak. Diag., 1888, 38. 



Morphology. Bacilli short. 



Gelatin colonies. Small, aerogenes-like. 



Potato. Growth rugose, yellowish white, limited. 



Habitat. Water. 



53. B. granulatus 



B. aquatilis-solidus Lustig: Diag. Bak. des Wassers, 1893. 

 Morphology. Bacilli 3 times their width. 

 Gelatin colonies. Aerogenes-like, granular. 



Potato. Growth grayish white to yellowish. Nitrates reduced to nitrites. 

 Habitat. Water. 



54. B. stolonatus Adametz 



Mitth. Oest. Versuchstat. f. Braueri u. Malz. Wien, 1888, 844. 

 Morphology. Bacilli 2-3 times their breadth. 

 Gelatin colonies. Capitate, whitish-brownish. 



