PARASITIC FUNGI AND MOULDS. 55 



spores, which are continually detached (Fig. 26). The 



Fig. 26. Trichnphyton tonsurans on the epidermic layers of a patch of circinnate 

 herpes : o, spores ; 6, mycelium with loiig articulations ; c, mycelium with short 

 articulations ( x 400 diam.). 



mycelium is often ramified, and penetrates within the 

 epidermic cells, especially at 

 the base of the hairs. 



It is probably that the 

 parasitic Sycosis which affects 

 the beard, and circinnate 

 herpes, two other skin-diseases, 

 are only varieties of the same 

 disease. In fact, Cornil and 

 Ranvier have ascertained that if Trichophyton is in- 

 serted in the glabrous chin of a child, it will produce 



Fig. 27. Spores and filaments of 

 Trichophyton, germinating on 

 two epidermic cells of the skin. 



