GENUS BACILLUS 333 



BACILLUS PSEUDO-TETANI. 



Place in nature. In 1900 Bain * isolated from a wound 

 caused by a blank cartridge a tetanus-like bacillus which re- 

 sembled very closely morphologically and in its anaerobic 

 requirements the bacillus of tetanus. Because of the possi- 

 bility of finding the tetanus organism by microscopic exami- 

 nation of the scrapings from the lesions when they can be 

 located, it is important to recognize that forms resembling the 

 tetanus organism very closely are sometimes encountered. 

 Bain found that the bacillus which he isolated differed from 

 the true tetanus organism in that it is not pathogenic for 

 guinea pigs. It is Gram negative. It possesses less flagella. 

 Among the cultural differences its growth in glucose gelatin 

 and glucose agar is totally unlike that of tetanus in these 

 media. It does not liquefy gelatin, as does the tetanus or- 

 ganism. It does, however, produce spherical spores situated 

 at the ends of the rod, which would readily lead one to suspect 

 tetanus from a simple microscopic examination. Bushnell 2 

 found a bacillus in a case of fistulous withers that resembled 

 morphologically that of tetanus, except that the spores were 

 oval. After a few generations it grew in the presence of at- 

 mospheric oxygen. It was not pathogenic for experimental 

 animals. 



BACILLUS NECROPHORUS FLUGGE. 



Synonyms. Bacillus of calf diphtheria Loeffler ; Bacillus 

 diphtheriae vitulorum; Bacillus filiformis Schiitz ; Streptothrix 

 cuniculi Schmorl ; Nekosebacillus Bang. 



Place in nature. This bacillus is the cause of a consider- 

 able variety of lesions in domesticated animals characterized 

 by necrosis. It was first observed by Koch x and later isolated 

 and studied by Loeffler as the probable cause of the disease 

 designated by Dammann as calf diphtheria. Bang called at- 



1 Bain. The Journal of the Boston Society of the Medical Sci- 

 ences, Vol. V (1901) p. 50G. 



2 Bushnell. Am. Vet. Review, Vol. XXVI (1902-03) p. 405. 

 1 Koch. Mittheil. a. d. Kaiserl. Gesundheits., Bd. I (1881) p. 1. 



