DISEASES CAUSED BY MOLDS, ETC 103 



THRUSH. 



This occurs in infants and young children, caus- 

 ing sore mouth. It is caused by a mold called the 

 Oidium albicans. The mucous membrane is red and 

 dotted with small, white flakes, which contain the 

 organism. 



Fig. 14. Trichophyton tonsurans. (After Bi 



PITYRIASIS VERSICOLOR. 



The infectious mold here is the Microsporon 

 furfur, which lives on rather than in the skin. It 

 produces yellowish, scaly patches on the chest, back, 

 or abdomen, which may spread over large areas of 

 the skin. When scratched, the growth can be re- 

 moved in fine scales which contain the mold. It 

 affects chiefly the uncleanly. 



FAVUS. 



The mold causing favus is called the Achorion 

 Schonleini, after its discoverer. It attacks the hair-fol- 



