20 



THE ORGANISM IS A MICEOCOCCUS. 



THE GELATINE IS NOT LIQUEFIED. 



THE COLONIES ABE WHITE, CONFLUENT, AND 

 GEOWING EAPIDLY. 



THE COCCI VAEY IN THEIE AERANGEMENT. 



Micrococcus urese (Pasteur), from air and from ammoniacal urine ; 

 cocci 0*8 to 1 M in diameter, either singly, in pairs, chains, tetrads 

 or zoogloea masses ; old cultures have a paste-like odour. 



Micrococcus viticulosus (Katz), from air and water ; oval cocci, about 

 1 /i in diameter ; forms thick zoogloea masses ; the colonies 

 consist of hair-like branches from a centre forming a dehcate 

 network. 



