1/8 BACTERIOLOGY 



149. Bact. Havaniensis (Sternberg) 



B. Havaniensis Sternberg: I.e., 718. 

 Morphology. Bacilli short ovals, 0.4-0.5 /«,; occur usually in pairs ; almost a 



coccus. Slight growth at 20°. 

 Gelatin colonies. Round, small, translucent, blood-red. 

 Gelatin stab. A carmine layer on surface. 

 Agar slant. Growth thick, carmine-red, moist, glistening. 

 Habitat. Yellow fever cadavers. 



150. Bact. latericeum (Adametz) 



B. latericeus Adametz ; I.e. ; Wright : I.e., 436. 

 Morphology. Bacilli 3-5 times their breadth, to filaments. 

 Gelatin colonies. iZ'^^/; round; granular. Surface: in 7 days, small, i mm., 



round, entire, red to reddish brown to brick-red ; microscopically, round, 



entire, red to reddish brown, strongly refracting. 

 Gelatin slant. Growth limited, elevated, glistening, brownish red to dark 



vermilion. 

 Acid gelatin. A strong development. 

 Agar slant. Growth limited, moist, glistening, reddish brown to yellowish 



brown. 

 Bouillon. Clear ; a stringy sediment, alkaline. 

 Potato. Growth thin, moist, reddish. 

 Litmus milk. Decolorized, coagulated, amphoteric. 

 Glucose gelatin. No growth. 

 .Pepton-rosolic acid solution. Color somewhat deepened, slightly alkaline. 



Indol negative. No growth at 36°. 

 Habitat. Water. 



151. Bact. rhodochroum (Dyar) 



B. rhodochrous Dyar : I.e., 362. 

 Morphology. Bacilli 0.5-0.6-1.0 /x; occur singly and in chains. Pigment 



bright pink. 

 Gelatin colonies. Round, entire, smooth. 

 Bouillon. No metnbrane. 

 Lactose litmus. Blue. Nitrates not reduced. 

 Habitat. Air. 



152. Bact. salmoneum (Dyar) 



B. salmoneus Dyar : I.e., 362. 

 Identical with the preceding, except that the pigment is salmon-pink. 

 Habitat. Air. 



