THE CLASSIFICATION OF BACTERIA 285 



Bouillon. Turbid. 



Pepton rosolic acid solution. Becomes lighter ; decolorized in 2 weeks. 



Litmus milk. Alkaline, not coagulated, becoming translucent, and in 2 weeks 



violet. 

 Glucose bouillon. No gas. Indol negative. Grow at 36 . 

 Habitat. Soil. 



219. 8. cuticularis 



B. cuticularis-albut Tataroff : Die Dorpater Wasserbakterien, Dorpat. 1891, 24. 



Morphology . Bacilli 3.2 ft long, variously bent filaments, in pairs. 



Gelatin colonies. Deep colonies: round oval, entire. Surface colonies: irreg- 

 ular, bluish white, opalescent ; microscopically, brownish, edge irregular, 

 granular. 



Gelatin stab. In depth, beaded; later with ligulate outgrowths; surface 

 growth, irregular rosette-shaped, white, glistening, spreading. 



Agar slant. Growth white, glistening, spreading. 



Bouillon. Turbid, white sediment, flocculent particles in the fluid, and a 

 whitish pellicle. 



Potato. Growth thick, moist, glistening, brownish ; surface irregular, becom- 

 ing reddish brown yellowish brown. 



Habitat. Water. 



220. B. Foutini 



Bacillus D Foutin: Centralblatt f. Bakteriol., VII, 1890. 373. 

 Morphology. Bacilli 1.0:5-20 fi, thinner at the poles, which are slightly 



rounded; one to four spores in a single rod ; slightly motile. 

 Gelatin stab. In depth, growth beaded ; on the surface, a nailhead growth. 

 Agar slant. Growth limited, rather thick, with mother-of-pearl iridescence. 

 Potato. Growth somewhat raised, yellow, limited. 

 Pathogenesis. Non-pathogenic. 

 Habitat. Isolated from hail. 



CLASS XVII. WITH ENDOSPORES. AEROBIC AND FACULTATIVE 

 ANAEROBIC. RODS NOT SWOLLEN AT SPORULATION. POTATO 

 CULTURES DEVELOPING A RED PIGMENT, CHROMOGENIC IN 

 PART. 



. I. Agar smear cultures yellowish to reddish. 



221. B. coccineus Pansini. 

 II. Agar smear cultures whitish or grayish. 



1. Milk coagulated. 



223. B. viscosus. 



2. Milk not coagulated. 



224. B. vilalis. 



