STREPTOCOCCUS LANCEOLATUS. 145 



Surface growth : Very delicate, transparent growth, with 

 even border, faintly glistening (2, iv). 



Agar Streak. Extremely delicate, transparent, gray- 

 ish-white, faintly glistening, often not sharply outlined 

 from the agar. Water of condensation clear, with very 

 little whitish sediment (2, n). 



Serum Culture. Slimy, almost transparent growth. 



Ascites-glycerin-agar. More luxuriant cultures. 

 Those lying superficially are usually even-bordered, the 

 periphery somewhat padded, and throughout (especially 

 in old colonies) coarsely punctated to mulberry-like. They 

 then resemble old gonorrhea cultures or at times even very 

 young agar cultures of the colon bacillus. 



Bouillon Culture. Short, straight chains ; sediment 

 light and not holding together (Kurth). 



Milk Culture. Milk coagulated. This property, ac- 

 cording to Kruse and Pansini, is very rarely absent. In 

 the milk small amounts of acid are formed. 



Potato Culture. No growth. 



Vitality in Cultures. Very short duration of life 

 (often only a few days), and even a more rapid lessening 

 of virulence. In bouillon occurs the most luxuriant growth, 

 but it is least durable. 



Resistance to Drying. In dried blood as long as 

 forty-five days; in dried sputum as long as one hundred 

 and twenty to one hundred and forty days in diffuse light, 

 and nine to twelve hours in direct sunlight. Literature, 

 Germano, Z. H. xxvi, 66. 



Chemical Activities. Fawitzky isolated three cul- 

 tures, which were able to produce a brick-red pigment 

 (best in bouillon). (Compare Strept. pyogenes. ) Fil- 

 tered and devitalized unfiltered cultures contain toxins, 

 but in relatively small amount. In other respects it is 

 like the Strept. pyogenes. 



Occurrence. (a) Outside the organism : Not found. 



(b) In healthy organisms : Often in saliva. 



(<?) In diseased human organism : One, of the most im- 

 portant pathogenic varieties. In the most various inflamma- 

 tory processes, especially such as attack mucous and serous 

 membranes, also not infrequently causing suppuration. 

 Especially frequent as the cause of croupous and catarrhal 

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