26o RELATIONSHIPS OF THE COCCACE^ 



acid in lactose, maltose, and glycerin media, but does 

 acidify mannite. Gelatin not liquefied. Nitrates not 

 reduced. 



Genus VII. Sarcina (Goodsir) Winslow and Rogers. 



Facultative parasites or saprophytes. Division occurs 

 under favorable conditions in three planes, producing regu- 

 lar packets. Generally decolorize by Gram. Growth on 

 agar abundant, with formation of yellow pigment. Dex- 

 trose broth slightly acid, lactose broth generally neutral. 

 Gelatin frequently liquefied. Nitrates may or may not 

 be reduced. 



Species i. S. flava De Bary. 



A saprophytic or semi-parasitic coccus, found most 

 commonly in earth, water, and air, also on the surfaces of 

 the animal body. Occurs under favorable conditions in 

 packets. Generally decolorizes by Gram. Good to very 

 heavy surface growth, of yellow color. Reaction in dex- 

 trose broth faintly acid, in lactose broth alkalin or faintly 

 acid. Gelatin slowly liquefied. Nitrates not reduced. 



Species 2. S. citrea Winslow. 



A saprohytic or semi-parasitic coccus, found most 

 commonly in earth, water, and air, frequently also on the 

 surfaces of the animal body. Occurs under favorable 

 conditions in packets. Generally decolorizes by Gram. 

 Good to very heavy surface growth, of yellow . color. 



