The Specific Organism 



829 



itself over much of the skin surface. When the lesions are 

 large they give off an odor suggesting that peculiar to white 

 mice. In recovering, the lesions leave considerable cicatricial 



, - 



Fig. 281 . Favus. Hairs of a child infected with Achorion schonleinii. 

 A, Magnified 260 diameters; B, 75 diameters. The large rounded bodies 

 are droplets of air which always appear after treatment with 40 per cent, 

 potash solution. The linear threads are the fungi. Some are without 

 spores, others contain rows of spores (Sabouraud). 



scarring, and atrophy of hair-follicles, sweat, and sebaceous 

 glands is inevitable. 



The Specific Organism. The Achorion schonleinii is 

 probably better regarded as a group of closely related organ- 



