THE CLASSIFICATION OF BACTERIA 279 



201. B. capillaceus Wright 



I.e. 456. 



Morphology. Bacilli large, ends blunt, in chains. 



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

 dark, granular, irregular stellate branched, composed of smaller 

 daughter colonies and filamentous outgrowths. Surface 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 growth, 

 becoming alkaline. 



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

 becomes brownish. 



Bouillon. Clear, alkaline. 



Potato. Growth thick, rough, slightly granular, pu r ple-pink. 



Litmus milk. Coagulated, decolorized, amphoteric. 



Glucose bouillon. No gas. Indol slight or doubtful. Grow at 36. 



Habitat. Water. 



^ 202. B. rudis 



B. ladii No. 6 Fiiigge : Zeitsch. t. 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. Board of Health, 1890, 831. 



Morphology. Bacilli 1.0 : 2-5 /a, 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. 

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

 Bouillon. In 3-4 days, turbid ; no pellicle. 



