2$6 RELATIONSHIPS OF THE COCCACEjE 



singly, or in pairs, or irregular groups, rarely in short chains. 

 Generally stains by Gram. Meager to good surface growth, 

 of orange color. Acid production moderate in dextrose 

 broth, but slight in lactose broth. Nitrates not reduced. 

 Growth better at 37 degrees, but pigment production better 

 at 20 degrees. Gelatin not liquefied. 



Species 3. Aur. mollis (Dyar) Winslow. 



A parasitic coccus, living normally on the surfaces of the 

 human or animal body, or in diseased tissues; often found 

 in the air. Occurs singly, or in pairs, or irregular groups, 

 rarely in short chains. Reaction to Gram stain variable, 

 more often positive than not. Good to abundant surface 

 growth, of orange color. Acid production moderate in 

 dextrose and lactose broth. Nitrates reduced to ammonia, 

 or nitrites, or both. Growth generally equal at 20 and 

 37 degrees; pigment production equal, or better at 20 

 degrees. Gelatin usually liquefied rapidly; rarely, not 

 liquefied. 



Genus V. Albococcus Winslow and Rogers. 



Parasites. Cells in groups and short chains (never in 

 packets). Generally stain by Gram. Growth on agar 

 streak abundant, and porcelain-white in color. Sugars 

 fermented with production of a moderate amount of acid. 

 Gelatin liquefaction and nitrate reduction may or may not 

 occur. 



