THE CLASSIFICATION OF BACTERIA 171 



Milk. Not coagulated. 

 Pepton-rosolic acid. Unchanged. 

 Habitat. Air. 



130. Bact. palidor (Dyar) 



B.fiiScus.palidor'Dyax'. I.e., 361. 



Morphology. Bacilli 0.5-0.7: i. 0-1.3 ju,; occur singly and in chains. 



On solid media. Growth pale, whitish, orange, almost pinkish, wrinkled, 



with lobed edges ; a crusty, brittle texture. 

 On liquid media. A surface membrane. 

 Litmus milk. Blue. 

 Habitat. Air. 



131. Bact. ovale (Wright) 



B. ovalis Wright : I.e., 435. 



Morphology. Bacilli medium-sized, short, rounded ; in pairs and as filaments. 



Gelatin colonies. Deep: opaque, granular, entire, brownish. Surface: in 

 5-6 days, I mm., round, entire, elevated, glistening, yellowish, translu- 

 cent, becoming yellow — brownish yellow : gelatin slightly brovjnish. 



Gelatin slant. Growth elevated, brownish yellow, limited, smooth — rugged ; 

 gelatin assumes a brownish tint. 



Agar slant. Growth pale yellow, thick, glistening, limited. 



Bouillon. Clear, with a sediment. 



Potato. Growth brownish yellow, moist, spreading, viscid. 



Litmus milk. Decolorized, not coagulated. Indol. A slight reaction. No 

 growth at 36° C. 



Glucose bouillon. No gas. 



Habitat. Water. 



132. Bact. luteum List 



Adametz, Bakt. Nutz u. Trinkwasser, 1888. 



Morphology. Bacilli i.i : 1.3 ;«.• Optimum temperature 30° C. 



Gelatin colonies. Irregular, flat, consisting of many clavate coarse granular 



zoogloea masses : orange-yellow. 

 Milk. Coagulated. 

 Habitat. Water. 



133. Bact. striatum (v. Besser) 



B. striatus-flavus v. Besser : Ziegler's Beitrage, VI, 



Morphology. Bacilli small, often bent. 

 Gelatin colonies. Thick, dry, granular, yellow. 

 Agar slant and potato. Growth sulphur-yellow. 

 Habitat. Isolated from nasal mucus. 



