THE CLASSIFICATION OF BACTERIA 239 



91. B. nitriflcans Burri-Stutzer 



Centralblatt f. Bakteriol., I, 1895, 2te Abt., 733. 



Morphology. Bacilli 0.5 : 0.7-1 .5 /* ; involution forms ; stain badly in aqueous 

 analine colors. 



Gelatin colonies. Deep colonies : round, gray. Surface : round, slimy, color- 

 less, which after 8 days are sunken in the liquefied gelatin. 



Gelatin stab. Surface growth spreading, colorless to bluish, 2-3 mm., which 

 after a time begins to sink in the liquefied gelatin. In 3 weeks a crateri- 

 form to napiform liquefaction. 



Bouillon. Slightly turbid, with a small amount of a whitish to reddish sedi- 

 ment. Oxidizes nitrites to nitrates. 



Habitat. Isolated from the soil. 



92. B. guttatus Zimmerman 



Bak. Trink u. Natzwasser, Chemnitz, 1890, 56, 



Morphology. Bacilli 0.9 : i .0 fx.. 



Gelatin colonies. Deep colonies have a brownish centre and bright borders. 



Surface colonies are small and round. 

 Agar slant. Growth gray, limited. 

 Potato. Growth slimy, yellowish gray. ' 

 Habitat. Water. 



93. B. inunctus Pohl 



Centralblatt f. Bakteriol., XI, 1892, 143. 



Morphology. Bacilli 0.8-0.9 '■ 3-5 /*■ 



Gelatin colonies. Round, entire. 



Gelatin stab. Radiating outgrowths from the line of stab ; surface growth 



thick, glistening. 

 Agar slant. Growth whitish. 

 Potato. Growth slimy. 

 Habitat. Water. 



94. B. litoralis Russell 



Zeitsch. f. Hygiene, XI, 1891. 



Morphology. Bacilli 2-4 times their breadth ; grow slowly. 



Gelatin colonies. The deep colonies in 3 days are small, brownish ; the sur- 

 face colonies are entire, shining to opalescent, and granular ; liquefaction 

 takes place in 5-8 days. The evaporation causes depressed colonies. 



