300 



BACTERIOLOGY 



Gelatin colonies. Radiately filamentous, like a caterpillar ; develops much 

 bad-smelling gas. 



Agar colonies. Opaque clumps, reaching 4 mm., felted in centre ; filamentous 

 to reticulate on border. Develops much bad-smelling gas. Non-patho- 

 genic to mice and guinea pigs. 



Habitat. Earth. 



258. B. cadaveris E. Klein 



Centralblatt f. Bakteriol., XXV, 1899, 278. 



Morphology. Bacilli 2-4 /A long, about as thick as malignant oedema bacillus; 

 ends rounded ; filaments and chains. Spores at end, oval exceeding the 

 diameter of the rod. Stain by Gram's method. Flagella peritrichic. 



Gelatin colonies (with glucose) . Granular, radiately branched colonies ; lique- 

 faction begins in 1-2 days ; centre dark, granular, from which granular 

 outgrowths proceed. Colonies like the preceding. Klein thinks this 

 organism may be identical with 257. 



Agar slant. Anaerobically, at 37, colonies irregular, ragged, finely granular, 

 with darker centres ; later the central colony gives off dark, branched, 

 filamentous, anastomosing outgrowths. Much gas in glucose agar. 



Milk. Coagulated, peptonized, amphoteric alkaline; bad odor. 



Blood serum. Liquefied ; bad odor. 



Bouillon. A slight turbidity. 



Pathogenesis. Subcutaneous and intraperitoneal inoculations of guinea pigs 

 negative. 



Habitat. Isolated from cadavers. 



259. B. Weigmanni 



Paraplectrum fcetidum Weigmann : Centralblatt f. Bakteriol., 2te Abt., IV, 1898, 827. 



Morphology. Bacilli on agar 0.8-1.3:2.2-12.5 /x. Not stained by Gram's 



method. Motile, but flagella could not be demonstrated. At sporulation 



clostridium and tetanus forms. 

 Gelatin colonies. No growth. 

 Agar (with soda, casein, milk sugar). Growth like B. licheniformis . No 



growth on plain agar. 



Glucose agar colonies. Like B. licheniformis. 

 Glucose bouillon. Turbid ; a membrane on the surface, becoming clear, with 



a heavy sediment. 

 Potato. Growth thin, soft, glistening. 



