DISEASES CAUSED BY MOLDS, ETC. 
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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. 15.—Trichophyton tonsurans. (After Bizzozero.) 
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- 
