222 BACTERIOLOGY 



Potato. Growth viscid, yellowish. 



Pathogenesis. Cultures quickly lose their virulence. Fresh, first generation 



cultures kill guinea pigs in i cc bouillon culture doses. There is bloody 



oedema, with gas ; a reddening of the muscles, and an enlargement of the 



liver and spleen. 

 Habitat. Isolated from guinea pigs which have been inoculated with faeces, 



earth, dust, etc. 



47. B. pneumosepticus Kruse 



Pneumonie bacillus Klein : Centralblatt f. Bakteriologie, V, 1889, 625. 

 B. pneumosepticus Kruse: Flugge, Die Mikroorganismen, 1896, 408. 



Morphology. Bacilli 0.3-0.4 : 0.8-1.6 /1; in chains. Show the polar stain. 

 Gelatin colonies. Deep: small, round. Surface: thin, iridescent, spreading, 



erose. 

 Gelatin stab. Surface growth flat. 

 Agar slant. Growth whitish-brownish. 

 Potato. Growth thin, slimy, brownish. 

 Pathogenesis. Subcutaneous inoculation of mice is fatal in 60 per cent of the 



cases. Inflammation at the point of inoculation and in the lungs ; spleen 



enlarged; hemorrhagic enteritis. Guinea pigs die in 25 per cent of the 



cases, with lobular pneumonia, pleuritis, etc. 

 Habitat. Isolated from rusty sputum of pneumonia patients. 



48. B. monachae v. Tubeuf 



Forst. Naturwiss. Zeitsch. I, 1892, 34; ref. Centralblatt f. Bakteriologie, XII, 1892, 268. 



Morphology. Bacilli 0.5 : 1.0 [i; occur singly, in twos, and in short chains. 

 Acid gelatin colonies. Transparent, opalescent, with mother-of-pearl lustre ; 



microscopically, central portion ochre-yellow, sometimes zoned ; edge 



erose, lobed. 

 Bouillon. Turbid. 

 Potato. Growth moist, gray. 

 Pathogenesis. Infection experiments positive. 

 Habitat. Found in the body fluids of diseased " nun-moth " larvae (Liparis 



monachd) . 



49. B. cuniculi Lucet 



B. septicus-cuniculi Lucet: Ann. Pasteur Inst., 1892, 558. 



Morphology. Bacilli 1-3 /1. 



Gelatin colonies. Smooth, very convex, slimy. 



Bouillon. 39-4o, growth in stringy masses. No growth on potato. 



