BACILLI 48' 



BACTERIUM ZURNIANUM (List) 



Authority. Adametz, Die Baktcrien der Nutz- und Trinkwcisser, Vienna, 

 1888. 



Where Found. In water. 



Microscopic Appearance. Small bacilli slightly pointed at the ends, 0-6 to 

 0'8 /j. broad, and 0-2 to To ju. long. In stained preparations the poles stain more 

 intensely than the middle, giving it the appearance of a diplococcus. It is not 

 motile. Does not form spores. 



Cultures. 



GELATINE PLATES. Forms circular dirty white or grey colonies composed 

 of exceedingly viscid slime, and which gradually form grape-shaped slimy 

 heaps. No liquefaction takes place. 



GELATINE TUBES. Forms a grape- shaped growth on the surface, but hardly 

 grows at all in the depth. Produces a slight odour recalling that of sour 

 cabbage. 



POTATOES. At from 25 to 30 C. it produces an extensive slimy expansion, 

 slightly transparent, and grey or yellowish white in colour. 



BACILLUS UREAE 



Authority. Jaksch, Zeitschrift f. 2ihys. Chcmic, vol. v. p. 395. Also 

 Lfcube and Grasser, Virchow's Archiv, vol. c., p. 55(5. 



"Where Found. In decomposed ammoniacal urine. Found frequently by 

 Tils (loc. cit.) in the Freiburg water. Also by.Lustig (loc. cit.} in river- water. 



Microscopic Appearance. Plump bacilli about 2 /* long and 1 /u broad, 

 with rounded ends. 



Cultures. 



GELATINE PLATES. On the second day a small, almost transparent spot is 

 visible. The colonies resemble a glass plate which has been breathed upon. 

 The growth extends from the centre in irregular and circular zones, the last of 

 which has a serrated edge. 



GELATINE TUBES. After ten days thin grey extensions are visible along the 

 needle's path in the depth, and there is but rarely much growth towards the 

 surface. No liquefaction takes place. The growth emits a characteristic odour 

 recalling that of herring brine. 



Remarks. It converts urea into ammonium carbonate more energetically than 

 the M. ureae. (See p. 504.) 



