204 MICROBIOLOGY 



tions of the vagina it was found between the epithelial cells. 

 It stained readily with Loeffler 's methylene blue. It was found 

 associated with Micrococcus pyogenes and B. coli. It grew 

 sparingly or more vigorously on the usual culture media. 



We have made very careful bacteriological examinations 

 of the genital tract of many cattle and found repeatedly 

 streptococci which did not differ from the one described by 

 Ostert'ag so far as one is able to ascertain from his description. 

 We have made several inoculations in calves but have failed 

 to produce the disease. 



STREPTOCOCCI OF MASTITIS. 



Kitt described a streptococcus as the cause of an infectious 

 mastitis in cattle. He designated it Streptococcus agilactae. 

 Gouillebeau described Streptococcus contagiosi as the probable 



Fig. 47. Streptococcus of mastitis (much enlarged). 



cause of this inflammation. The descriptions which these 

 authors give are not sufficient for positive identification. 

 Dubois 2 describes an acute streptococcic mastitis and Eeed 

 and Ward :>> discuss the streptococci in the normal udder and 

 one which produced acute mastitis. It is not possible, how- 



2 Dubois. Jour, of Comp. Path, and Therap., Vol. XVII (1904) 

 p. 159. 



5 Reed and Ward. Amer. Medicine, Vol. VII (1903) p. 256. 



