100 RELATIONSHIPS OF THE COCCACE^ 



The genus Aurococcus, therefore, presents a fairly 

 definite picture; and on the strength of these observations 

 we have defined it as follows: 



Micrococcus 



\ 



\ 



cina 



Aurococcus 



0.0 



0.3 



0.8 1.3 1.8 



Depth of Liquefaction in Cm. 



2.8 



FIG. III. Liquefaction of Gelatin by certain Genera of the 

 Coccaceae. 



GENUS IV. AUROCOCCUS (Winslow and Rogers). 

 Parasites. Cells in groups and short chains, very rarely 

 in packets. Generally stain by Gram. On agar streak 



