THE CLASSIFICATION OF BACTERIA 69 



B. Gelatin not liquefied. 



31. Sir. aurantiacus (Bruyning). 



32. Sir. ochroleucus (Prove) Trev. 

 II. Pigment violet. 



A. Gelatin liquefied. 



33. Str.fluorescens (Klamann). 



B. Gelatin not liquefied. 



34. Sir. violaceus (Schroter) Trev. 



30. Str. vermiformis Steinberg 



Wurmformiger Streptococcus Maschek : Jahresber. Oberrealschule zu Leitmeritz, 1887. 

 .Str. vermiformis Sternberg : Manual Bacteriology, 1892. 



Morphology. Streptococci, which show slow vermiform movements.' Chains 



resemble filaments. 

 Gelatin colonies. Yellowish white, becoming liquefied ; concentric structure. 



Microscopically the colonies show radiate margins. 

 Gelatin stab. Liquefaction rapid ; a dirty yellow sediment. 

 Potato. A dirty yellow growth. 

 Habitat. Water. 



31. Str. aurantiacus (Bruyning) 



Micrococcus aurantiacus-sorghi Bruyning : Archiv. Neerland Sci. Exact, et 

 Nat., I, 1898, 297. 



Morphology. Cocci round-oval, 0.7-0.9 /x, which form chains. 



Bouillon. Turbid; medium acid. 



Potato. A bright yellow growth. 



Milk. Coagulated in 7 days. 



On gelatin. A yellow growth. 



Pigment. Soluble in alcohol. 



Habitat. Isolated from blighted sorghum. 



32. Str. ochroleucus (Prove) Trevisan 



Micrococcus ochroleucus Prove: Cohn, Beitrage Biol., IV, 409. 

 Str. ochroleucus Trevisan : Gen., 1889, 31. 



Morphology. Cocci 0.5-0.8 /x ; solitary pairs chains. 

 Gelatin colonies. In 24 hours small, colorless, with elevated and wavy 

 borders. 



