254 



RELATIONSHIPS OF THE COCCACE^ 



which usually renders broth uniformly turbid. Its growth 

 on gelatin at 20 degrees is variable. It clots milk and 

 reduces neutral red and ferments saccharose, lactose, and 

 raffinose. 



Species 5. Sir. anginosus Andrewes and Horder. 



This type is a pathogenic long-chained form, allied in 

 other respects to Str. salivarius, and bearing to it much the 

 same relation which Str. pyogenes bears to Str. mitis. It 

 occurs most commonly in cases of scarlatinal and other 

 forms of sore throat. It is long-chained and produces a 

 flocculent deposit in broth. It generally fails to grow on 

 gelatin at 20 degrees, and is markedly hemolytic. Like 

 Str. salivarius, on the other hand, it clots milk, reduces 

 neutral red, and forms acid in saccharose, lactose, and 

 raffinose. 



Species 6. Str. fcecalis Andrewes and Horder. 



This type is specially characteristic of the human 

 intestine. It is short-chained and renders broth uniformly 

 turbid. It grows readily at 20 degrees and forms sul- 

 phureted hydrogen in broth cultures. It has no hemo- 

 lytic power and little virulence, but produces a positive 

 reaction to all of Gordon's tests except raffinose and inulin. 

 That is, it clots milk, reduces neutral red, and ferments 

 saccharose, lactose, salicin, coniferin, and mannite. The 

 mannite reaction is specially characteristic of this intestinal 

 type. 



