FAVUS 541 



organisms described. The hairs in the diseased area remain 

 unaffected, but tBe organism is closely allied to the trichophyta, 

 though it is not so easily cultured. Infection experiments with 

 cultures have hitherto failed. 



Fig. 168. — a, Photograph of drawing of Achorion schonleinii on Sabouraud's 

 maltose agar, c, Photographs of cultures of Achorion quinckeamrm. 

 (The central culture of c was isolated from a cat, and the two side tubes 

 from a man infected from it.) b, Side view to show elevation of growth. 



It is impossible for us to describe in detail the botanical 

 characters presented in cultures by the three groups of parasitic 

 skin fungi, and we can only mention certain commonly occur- 

 ring characters. In all there is a free production of a septate 

 mycelium, and usually, by a lateral budding from the hyphte or 

 by the breaking up of the protoplasm of the thread, there is the 



