2 68 BACTERIOLOGY 



f Very thick bacilli, approaching 2.5 microns. 



197. B. megatherium De Bary. 



198. B. Ellenbachensis (alpha) Stutzer-Hartleb. 

 ff Bacilli not exceeding i.o micron in width. 



199. B. siibtilis-similis Sternberg. 



200. B. cereus. 



b. Potato cultures rough, granular. 



* Gelatin liquefied quickly. 



20 1. B. capillaceus Wright. 

 ** Gelatin liquefied slowly. 



202. B. rudis. 



c. Growth on potato thin, scanty, or none, and the color of the 



medium, i.e. white-gray. 



* Gelatin colonies round, entire, without radiations. 



203. B. circulans Jordan. 



** Gelatin colonies with radiating projections or proteus-like. 



204. B. limosus Russell. 



205. B. sputi. 



*** Gelatin colonies not described. 



206. B. vacuolosis Sternberg. 



d. Growth on potato thick, white. 



* Colonies of the anthrax type, floccose. 



207. B. pseudo-anthracis Kruse. 



e. Growth on potato thick, yellowish-brownish. 



208. B. vaculatus Ravenel. 



f. Growth on potato white-gray, but not otherwise described. 



* Colonies with radiating outgrowths or ciliate margins. 



209. B. Fluggei. 



210. B. crinatus. 



g. Sterilized potato inoculated undergoes a wet rot or putrefactive 



fermentation. 



211. B. Krameri. 



164. B. Prausnitzii Trev. 



B. ramosus-liquefaciens Flvigge : Die Mikroorganismen, 1886, 290. 

 B, Prausnitzii Trevisan : Genera, 1889, 20. 



Morphology. Bacilli large. 



Gelatin colonies. Beset with bristles ; liquefaction slow. 



Gelatin stab. Radiations from all sides. 



Habitat. A contamination in cultures. 



