PARASITIC FUNGI AND MOULDS. 



59 



The pelade fungus develops in the superficial 

 horny layer of the epidermis, on the surface of the 

 epidermic cells, and in their interstices. It does not 

 penetrate the hair-follicles, and is only occasionally 

 found on the hairs, in which case it is fastened to the 

 detached pellicles of the epidermis, not to the interior 



4 



o 



000 



1 



o 



a 6 



42 

 .ooO O 



At 3 



o 



Fig. 30. Hair affected by the 

 rapid progress of Pelade 

 decalvante. It is surrounded 

 by epidermic cells charged 

 with spores (x 208 diani.). 



Fig. 31. Isolated spores, taken from 

 patches of pelade : 1, 2, 3, 4, largo 

 spores ; 5, budding spores ; 6, 7, 8, 

 empty spores ; 9 to 12, small spores 

 (X 1000 diam.). 



of the hair (Figs. 29, 30). It is composed entirely of 

 the round spores already described, which are re- 

 produced by budding (Fig. 31). 



The Fungus of Pityriasis capitis simplex. It is 

 very similar to the foregoing, and is likewise seated 



