BACILLI 429 



BACILLUS OF BABBIT SEPTICAEMIA 



(Bacillus cuniculicida) 



Authority. Koch-Gaffky, ' Experimentell erzeugte Septicamie,' Mitthei- 

 lung a. d. Jcais. Gesundheitsamte, vol. i., 1881, p. 94. 



Where Found. In the river Panke, at Berlin. This bacillus is in all pro- 

 bability identical with the ChoUra des poules of Pasteur and the Bacillus der 

 Vogel-septikamie of Gamaleia (Eisenberg). 



Microscopic Appearance. A short bacillus about 1-4^ long and 0-6 to 0-7 ^ 

 broad, rounded at the ends; several frequently join together and appear like 

 threads, sometimes forming the figure 8. It is not motile. No spore forma- 

 tion observed. The poles stain more strongly than the centre, giving the 

 appearance of a diplococcus. They are stained by Gram's method. 



Cultures. 



GELATINE PLATES. Forms on the surface small round finely granular 

 centres having an irregular edge. No liquefaction takes place. 



GELATINE TUBES. Produces a delicate and whitish serrated expansion. 



AGAR-AGAR. Forms a whitish, shining, and fairly abundant expansion. 



BLOOD SEKUM. As on agar-agar. 



POTATOES. It will not grow at the ordinary temperature, but at 37 C. after 

 some days a scanty yellowish grey expansion appears. 



BROTH. Grows very slowly. 



Remarks. It is pathogenic for rabbits, mice, and birds. Roncali (' Dell' Azione 

 del Veleno del Bacillus Tetaiii,' Istituto d' Igiene sperimentale delta R. Universitd 

 di Roftia, vol. iii., 1893, p. 137) states that the B. cuniculicida, may be rendered 

 pathogenic to guinea-pigs when cultivated on agar containing the soluble products of 

 the tetanus bacillus, these animals dying with septicaemia symptoms. 



BACILLUS BKEVIS (Kurzer Canalbacillus) 



Authority. Rintaro Mori, ' Ueber pathogene Bacterien im Canalwasseiy 

 Zeitschrift fiir Hygiene, vol. iv., 1888, p. 53. 



Where Found. Found constantly in Berlin drain-water. 



Microscopic Appearance. Short bacillus with rounded ends about 2-5 /* 

 long and 0-8 to 1-0 /j. broad. The poles stain more intensely than the rest of the 

 bacillus. It is not motile. Is not coloured by Gram's method. 



Cultures. 



GELATINE PLATES. Grows very slowly at room-temperature ; even after two to 

 three weeks only pale yellow compact and almost microscopic centres are visible. 

 No liquefaction takes place. 



GELATINE TUBES. After three weeks a thin yellowish expansion appears on 

 the surface, whilst in the depth small centres are visible. 



AGAR-AGAR. Grows at 35 C., and already in two to three days a yellowish 

 growth is seen. 



BLOOD SERUM. At 35 C. in two to three days produces a light grey expansion. 

 The cultures in this and agar-agar only retain their vitality for from forty to 

 fifty days. 



POTATOES. No growth. 



BROTH. Forms a white cloudy deposit. 



Remarks. When subcutaneously inoculated into mice, the latter die in from 

 sixteen to thirty hours. It is also pathogenic to guinea-pigs and rabbits. 



