GENUS STREPTOCOCCUS 203: 



ism discovered by Schiitz is the specific cause, at present the 

 evidence is not absolute that such is the case. 



STREPTOCOCCUS CAPSULATUS GALLINARUM. 



Place in -nature. This streptococcus was described by 

 Dennmann and Manegold as the cause of sleeping sickness of 

 hens. 



Morphology. This streptococcus grows in long chains. 

 The individual segments are from 0.3 to 0.5 microns in diam- 

 eter. Its capsule can be readily detected according to its dis- 

 coverers by the use of carbol methylene blue applied to prepa- 

 rations of blood from the infected fowls. 



Staining. It stains with the ordinary aniline dyes and 

 is Gram positive. 



Cultivation. This organism grows best on blood serum 

 and in milk. It will develop, however, on agar gelatin and in 

 bouillon. The addition of from 4 to 6 per cent glycerine or 

 1 per cent sugar tends to increase the growth. It should be 

 incubated at the blood temperature. It is aerobic and facul- 

 tative anaerobic. It does not liquefy gelatin. In saccharose 

 bouillon it produces acid and little indol. It elaborates a 

 poisonous toxin. It is destroyed in a 3 per cent solution of 

 carbolic acid or lysol in from 3 to 5 minutes. 



Pathogenesis. It is reported to produce a disease in 

 pigeons, rabbits, white and gray mice, causing death in from 

 10 to 16 days with lesions similar to those of septicemia hemor- 

 rhagica. 



THE STREPTOCOCCUS OF THE GRANULAR VENEREAL DISEASE 

 OF CATTLE. 



Place in nature. Ostertag x describes a streptococcus as 

 the probable cause of granular venereal disease in cattle (in- 

 fectious granular vaginitis). It was found in the mucous or 

 purulent substance covering the mucous membrane of the 

 vulva and vagina as a diplococcus or in short chains. In sec- 



1 Ostertag. Monatshefte f. prakt. Thierheilk., Bd. XII (1901) p. 

 533. 



