I/O BACTERIOLOGY 



On solid media. Growth translucent, ochreous — light orange. 



Bouillon. A slight pellicle on the surface. 



Pepton-rosolic acid. Color deepened. A slight reduction of nitrates to 



nitrites. 

 Habitat. Air. 



126. Bact. domesticum (Dyar) 



B. domesticus Dyar : I.e., 358, 

 Morphology. Bacilli 0.5 : i.o /i,. 

 Gelatin colonies. Large, translucent, yellowish. 

 On solid media. Growth white — light yellow, spreading slowly. 

 Litmus milk. Red, becoming in jo days blue. 

 Habitat. Air. 



127. Bact. amabilis (Dyar) 



B. amabilis Dyar : I.e., 358. 

 Morphology. Bacilli 0.7 : 0.8-1.0 /i, ; occur singly, in chains, and masses. 

 Gelatin colonies. Large, translucent, yellowish. 

 Agar slant. Growth white, limited, with a yellowish tint. 

 Potato. Growth thin, bright yellow. /«rfo/ negative. 

 Pepton-rosolic acid. Unchanged. 

 Habitat. Air. 



128. Bact. lacunatum (Wright) 



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



Morphology. Bacilli small, short, rounded ; in pairs — small clumps. 



Gelatin colonies. Deep: round, entire, slightly granular, gray-brown. 

 Surface .■ in 24 hours, thin, translucent, with grayish centre ; very 

 irregular — deeply cleft ; microscopically, areolate — grained ; colonies 

 become 4-5 mm., thin, translucent, with a yellow haziness about their 

 centres. 



Gelatin slant. Growth thin, translucent, grayish — yellowish in centre. 



Bouillon. Turbid. 



Potato. Growth thin, viscid, dirty brownish. 



Litmus milk. Not coagulated, acid, becoming brownish. 



Glucose bouillon. No gas. Indol positive. No growth at 36° C. 



Habitat. Water. 



129. Bact. javaniensis (Dyar) 



B.javaniensis Dyar : I.e., 359. 

 Morphology. Bacilli short — coccoid, 1.0-1.2 /x; occur in masses and short 



chains. 

 Agar slant. Growth thick, white, with an indistinct yellowish tinge. 



