THE CLASSIFICATION OF BACTERIA 143 



Pathogenesis. Inoculations of mice, guinea pigs, and rabbits cause a general 



septicaemia. 

 Habitat. Isolated from the sputum of a cat. 



54. Bact. septicum (Trevisan) 



B. septicus-agrigenus Flugge : Die Mikroorganismen, x886. 

 Pasteurella agrigena Trevisan : Genera, 1889, 21. 



Morphological and cultural characters similar to those of fowl cholera. Patho- 

 genic to mice, guinea pigs, and rabbits. 



Habitat. Isolated from the earth. 



B. septicus-hominis Mironoff : Centralblatt f. Gynakologie, 1892, 42. From a 

 case of septic infection of the uterus ; and 



B. canalis-parvus Mori : Zeitsch. f. Hygiene, IV. From canal water ; not 

 differentiated from the preceding, No. 54. 



55. Bact. vitulinum 



Bacillus <Ur Septikimie bei einem Seekalbe Bosso : Centralblatt f. Bakteriol., XXV, 



1899. 52- 



Morphology . In the blood of rabbits inoculated with the virus, bacilli 0.9 : 

 2.7, or 0.5 : 1.7/1. Grow poorly in ordinary media and quickly lose their 

 vitality and virulence after 8-10 days. 



Gelatin colonies. Small, round, raised ; border distinct, granulose, yellowish. 



Agar slant. 37 , isolated, ash-gray colonies, becoming confluent ; condensa- 

 tion water turbid. 



Bouillon. In 8 hours, at 37 , a uniform turbidity, becoming clear in several 

 days. Grow well on glycerin agar. 



Pathogenesis. Subcutaneous inoculations cause death in rabbits in 20-60 

 hours ; slight enlargement of the spleen, diffuse coloration of the flesh, 

 bacilli in the blood. Guinea pigs die in 32-40 hours ; intense reddening 

 of the flesh, kidneys strongly congested, bacilli in small numbers in the 

 blood. Mice refractory to doses which kill the preceding. 



Habitat. Isolated from a septicaemia of the sea-calf (Phoca vitulina). 



56. Bact. purpurum 



Bacillus of purpura-hcemorrhagica Babes : Septische Proz. Kindesalters. 1889. 

 B. hamorrhagicus-septicus Kruse : Flugge, Die Mikroorganismen, 1896. 424. 



Morphology. Short rods with a capsule. Grow rapidly in gelatin. 

 Agar slant. Small transparent drops, becoming whitish yellow. 

 Potato. Growth composed of whitish drops. 

 Bouillon. Rendered turbid. 



