THE CLASSIFICATION OF BACTERIA 29S 



CLASS XXI. WITH ENDOSPORES. OBLIGATE ANAEROBIC. RODS 

 BECOMING LATERALLY SWOLLEN OR SPINDLE-SHAPED AT 

 SPORULATION. A FREQUENT VARIATION IN THIS REGARD IS 

 OFTEN NOTED, IN WHICH THE RODS ARE SWOLLEN NEAR 

 ONE END, APPROACHING THE TETANUS TYPE. 



, „ , . ,. ^ , Rauschbrand or Clostridium Group. 



I. Gelatin liquefied. 



A. Gelatin liquefied slowly, or merely softened by the growth in gelatin 



stab cultures. 



248. B. Feseri (Trevisan) Kitt. 



249. B. anaerobic V and VIII oi Sanfelice. 



250. B^ botulinus v. Ermengem. 



B. Gelatin liquefied rapidly. 



1. Spores entirely or prevailingly in the centres of the rods, and at 



sporulation swollen in the middle — typical Clostridium types. 



a. Cultures without a bad, putrid odor. 

 * Milk coagulated. 



251. B . butyricus 'Qo'C&va.. 

 ** Milk not coagulated. 



252. B. amylobader v. Tieghem. 



b. Cultures have a bad, putrid odor. 



253. B.ffBtidus (Liborius). 



2. Spores prevailingly at the ends of the rods, and at sporulation 



Swollen near one end, approaching the tetanus type ^ often also 

 swollen near the middle, approaching the Clostridium type. 



a. Grow in ordinary nutrient gelatin. 



" Colonies in gelatin or glucose gelatin never radiating — fila- 

 mentous, 

 f Milk coagulated. 



254. B. Kedrowski. 



ft Milk not coagulated, unchanged in 8 days. 



255. B. cuneatus. 



•fff Milk becomes rapidly translucent — transparent, with much 

 gas. 



256. B. sporogenes Klein. 



** Colonies on gelatin radiately filamentous. 



257. B. spinosus Luderitz. 



258. B. caddveris. 



b. Do not grow in ordinary nutrient gelatin. 



259. B. Weigmanni. 



