132 RELATIONSHIPS OF THE COCCACE.E 



surrounded by a well -marked capsule. Growth on media 

 fairly abundant, moist, and slimy. Ferments monosac- 

 charides, disaccharides, and inulin. Lacks hemolytic power. 

 Shows group serum reactions with D. pneumonia. Occurs 

 on the epithelial surfaces, and in the tissues, of man and 

 the higher animals. 



An organism of related type has recently been isolated 

 as the active agent in an epidemic among fowls (Dammann 

 and Manegold, 1906); and another form, perhaps allied 

 to it, is the coccus which causes a slimy fermentation of 

 milk, described as Str. hollandicus by Weigmann (1889). 

 In a recent review of the subject, Burri (1904) points out 

 the close resemblance of the slime-producing organism 

 known as Bad. Guntheri to the D. involutus type. 

 M. Sornthalii, Adametz, and Str. sputigenus, Migula, are 

 also apparently forms of D. involutus. The peculiar coccus, 

 first described by Johne (M. ascoformans) as producing 

 tumors in horses, growing in botryoidal zoogloea masses 

 within the tissues themselves, is perhaps allied to this 

 group of organisms. 



