31icrohic Diseases Individually Considered. 271 



found in large numbers, their nature being more 

 easily recognized by the rarefaction of the mycelial 

 felt-work in these situations. 



Fig. 14. 



Tuft of Actinomyces. 

 (From Kitt's Baderienkunde.) 



Isolated clubs of Actino- 

 myces. (Johne.) Do. 



MM. Cornil and Babes have described a special 

 condition of the filaments of the periphery of the 

 colonies, in which they terminated by various slight 

 enlargements bearing conidia. 



Harz classes the actinomyces with the hyphomy- 

 cetes fungi, regarding it as a complete fungus com- 

 posed of mycelia, hyphse and spores, the -mycelium be- 

 ing represented by a basal cell from which spring the 

 hyphce — the branching filaments of the internal zone — 

 and these bearing the spores or enlargements at the 

 periphery. 



The basal cell of Harz has not been found by other 

 investigators ; most of these, however, agree in re- 

 garding the enlargements as spores or, rather, as 

 sporangia ; hence these enlargements have received 

 the name of conidia. 



The classification of the actinom^-ces with the fungi 

 appears to us to be supported only by the results of the 



