THE CLASSIFICATION OF BACTERIA 2J()i 



261. 'B.capilla(i6us Wright 



I.C., 456. 



Morphology. Bacilli large, ends blunt, in chains. 



Gelatin colonies. Deep i colonies. : small, round, hazy; microscopically,, 

 dark, granular, irregular — stellate — branched, composed of smaller 

 daughter c9loniesja^(^ ,fjJapiqntous,.9_utgffjyyth^^ , -Sjir/izt^ colonies: in 

 2-3 days crateriform, 2 mm , denser and grayish in the centre ; micro- 

 scopically, dense central clumps and ciliate borders. 



Gelatin stab. Slight growth in depth ; on the surface, a crateriform-stratiform 

 liquefaction and a wrinkled . pellicle. „ Acid gelatin. Slight .gfovyth,. 

 becoming alkaline. , ,,. 



Agar slant. Growth grayish, frosted, becoming moist, glistening ; the agar 

 becomes brownish. ,, 



Bouillon. Clear, alkaline. 



Potato. Growth thick,i rough, slightly granular, purple-pink. 



Litmus milk. Coagulated, decolorized, amphoteric. 



Glucose bouillon. No gas. /ndol slight or doubtful. Grow at 36". 



Habitat. Water. 



202. B. rudis 



B. lacth No. 6 Flugge : Zeitsch. f. 'Hygiene, XVII, 1894. 



Morphology. Bacilli slender. 

 Gelatin colonies. With fine outgrowths. 

 Agar slant. Growth white, crumpled. 

 Potato. Growth twisted ; surface rough. 



Bouillon. . Turbid, slight pellicle; ■ ^ 



Milk. Coagulated, peptonized. 

 Habitat. Milk. 



203. B. circulans Jordan 



. Report Mass. Boardof Health, 1890, 831. 



Morphology. Bacilli i.o : 2-5 /n, in chains. 



Gelatin colonies. In 2-4 days, round, brownish; later, depressions, due to- 



liquefaction. 

 Gelatin stab. Slight growth in depth, a conical cavity ; evaporation exceeds- 



rate of liquefaction. 

 Agar slant. Growth thin, translucent. • ■ '■ > 1 



Potato. Growth somewhat scanty, the color of the medium. 

 Boiiillon. In 3-4 daysy turbid ; no pellicle. 



