298 BACTERIOLOGY 



252. B. amylobacter v. Tieghem 



Vibrio butyrique Pasteur : Compt/rend., LII, 1861. 



B. amylobacter van Tieghem : Compt. rend., LXXXVIII, 1878. LXXXIX. 1879. 

 B. navicula Reinke-Berthold : Zersetzung Kartoffel durch Pilze, Berlin, 1879. 

 Clostridium butyrtcum Prazmowski : Untersuch. uber die Entwick. u. Fermentwirk. einiger 

 Bact., Leipzig, 1880. 



Morphology. Bacilli 1.0:3-10^ filaments; contain granulations, which 



stain with iodine. Spores 1 : 1-2.5 /x. Spore germination polar. 

 Milk. Not coagulated or doubtful ; slowly peptonized. Ferments cellulose. 

 Habitat. Widely distributed. 



253. B. foetidus (Laborius) 



Clostridium faetidum Liborius : Zeitsch. f. Hygiene, I, 1886, 160. 



Morphology. Bacilli 1.0 fi thick, length variable filaments, like the preced- 

 ing. At sporulation, swollen mostly in the middle, now and then at one 

 end of the rod. 



Agar colonies. Small, yellowish white, with short outgrowths ; irregular 

 clumps of variable size ; old colonies show branched outgrowths from all 

 sides. 



Gelatin colonies. Round, irregular ; liquefaction rapid ; gas, with a bad 

 putrid odor. 



Habitat. Earth. 



254. B. Kedrowskii Migula 



Buttersaure Bacillus Kedrowski. Zeitsch. f. Hygiene, XVI, 1894, 445. 

 B. acidi-butyrtci Kruse : Fliigge, Die Mikroorganismen, 1896, 256. 

 B. Kedrowskii Migula: System der Bakterien, 1900. 



Morphology. Bacilli quite large. 



Glucose gelatin colonies. In 3-4 days, small, delicate, round, sharp; micro- 

 scopically, light yellow, contour irregular, a central nucleus and a fluid 

 periphery. 



Gelatin stab. In depth, growth beaded. 



Agar colonies. Round, elliptical, irregular, grayish white ; border entire 

 irregular ; microscopically, with a dense centre and a reticulately fila- 

 mentous border. Gas, with a bad odor. 



Milk. Coagulated, becoming acid ; a separation of serum. 



Habitat. Isolated from cheese and rancid butter. 



