THE CLASSIFICATION OF BACTERIA 287 



CLASS XVIII. WITH ENDOSPORES. AEROBIC AND FACULTATIVE 

 ANAEROBIC. RODS BECOMING SPINDLE-SHAPED AT SPORU- 

 LATION, OF THE CLOSTRIDIUM TYPE 



I. Gelatin liquefied. 



A. Grow in ordinary nutrient gelatin. 



1 . Growth along needle track in gelatin shows filamentous radiations. 



a. Gelatin colonies becoming ameboid or proteus-like. 



225. B. alvei Chesire-Cheyne. 



226. B. licheniformis Weigmann. 



b. Gelatin colonies seldom with outgrowths. 



227. B. inflatus A. Koch. 



2. Growth along needle track in gelatin stab eroded funnelled. 



228. B. erodens Ravenel. 



3. No growth in the depth of the gelatin ; obligate aerobic. 



229. B. saprogenes Kramer. 



230. B. Baccarinii Macchiati. 



B. Grow in nutrient gelatin only upon the addition of NH 4 HO or urea. 



231. B. Duclauxi (Miquel). 

 II. Gelatin not liquefied. 



232. B. cinctus Ravenel. 

 III. Action on gelatin not stated. 



233. B. catenula (Duclaux). 



234. B. urocephalus (Duclaux). 



235. B.filiformis (Duclaux). 



225. B. alvei Chesire-Cheyne 

 Jour. Roy. Mic. Soc, 1885, 582. 

 Morphology. Bacilli 0.8 : 2.5-5 /* 

 Gelatin colonies. Round, entire, becoming ameboid. 

 Gelatin stab. Growth arborescent, becoming liquefied. 

 Agar slant. Growth thin, white. 

 Potato. Growth yellowish. 



Milk. Coagulated, slightly acid, peptonized. Pathogenic for bees. 

 Habitat. Associated with fowl brood of bees. 



226. B. licheniformis Weigmann 



Centralblatt f. Bakteriol., IV, 1898, 822. 

 Morphology. Bacilli 0.6-0.8 : 1.8-2.6 fi long filaments. Clostridium 

 clavate forms at sporulation. Spores 0.45 : 1.3 fi. Spore germination 

 polar. Not stained by Gram's method. Flagella numerous peritrichic. 



