MICROCOCCI 503 



f 



MICEOCOCCUS EADIATUS 



I LIQUEFIES GELATINE | 



Authority. Fliigge, Die Mikroorganismen, 1886, p. 176. 



Where Found. In air and in water by Adametz, loc. cit. 



Microscopic Appearance. Small cocci 0-8 p. to 1-0 ^ in diameter, occurring 

 singly, in short chains, or in groups. Is slightly motile. (See Eisenberg, loc. 

 cit., p. 23.) 



Cultures. 



GELATINE PLATES. Forms large white, slightly liquefying colonies in two 

 days, with a yellowish green fluorescence. Under a low power they are brownish 

 yellow, granular, circular, with starfish-like extensions. In two more days' 

 time the latter develop into a delicate and regularly-arranged circlet of rays. 

 Often a second, sometimes even a third circlet is formed. 



GELATINE TUBES. Eadial extensions ramify in places from the needle's path 

 into the adjacent gelatine, whilst at the same time a pointed, funnel-shaped, 

 slowly liquefying canal is formed. 



POTATOES. Grows rapidly, producing a yellowish brown expansion. 



MICEOCOCCUS EOSETTACEUS 



Authority. Zimmermann, Die Bakterien unserer Trink- und Nutzivasser, 

 insbesondere des Wassers der Chemnitzer Wasserleitung, Chemnitz, 1890. 



Where Found. In Chemnitz water. 



Microscopic Appearance. Irregularly sized round or elliptical cocci, ar- 

 ranged like a bunch of grapes. Their diameter varies from O7 fj. to over 1*0 /". 

 Not motile. 



Cultures. 



GELATINE PLATES. Forms in the depth small greyish white dots, whilst the 

 surface colonies form somewhat broad, greyish yellow, shining, drop-like ex- 

 pansions, with an irregular contour. Under a low power the former are circular 

 and smooth-rimmed, and are only rarely lentil-shaped. These lentil-shaped 

 colonies have an irregular periphery, and are of a brownish colour, which is 

 darker in the centre than towards the edge. No liquefaction ensues. 



GELATINE TUBES. Forms a circular, spreading, rosette-shaped expansion. 

 Very little growth is visible in the depth. 



AOAB-AGAB. Forms a smooth grey shining, spreading expansion, with a 

 delicately denticulated periphery. 



POTATOES. Forms a yellowish grey expansion. 



Remarks. It will not grow in the absence of air. 



MICEOCOCCUS STELLATUS 



Authority. Maschek, Jahresbericht der Oberrealschule zu Leitmeritz,. 

 1887. 



Where Found. In water. 



Microscopic Appearance. It does not form chains. 



Cultures. 



GELATINE PLATES. Forms star-shaped colonies due to numerous extensions 

 (6 to 15) which start from the centre, and the ends of which are branched. 



GELATINE TUBES. Grows at first only on the surface, but later growths 

 appear in the depth, from which branchings extend into the surrounding gela- 

 tine. The latter becomes brownish yellow in colour. No liquefaction of the 

 gelatine takes place. 



POTATOES. Produces in fifteen days a brownish yellow slimy expansion. 



