176 



YEASTS AND MOULDS 



usually transmitted from person to person, either directly 

 or by use of toilet articles, it is not uncommonly contracted 

 by fondling affected cats and dogs. Debilitated persons are 

 most susceptible. The fungus penetrates the hair shaft, 

 sets up a little inflammation which slowly spreads, and is 

 soon covered wdth a curious sulphur-yellow concave crust 

 called a scutulum. The place becomes bald because the 

 nutrition of the hair is cut off. Some cases are on record 

 where this fungus has spread to all the tissues of the body, 

 doing damage by the irritation of its presence. 



FIG. 57 Achorion Schonleinii. (Flugge.) 



Thrash. Thrush or soor is a disease caused by the O'idium 

 albicans, and is characterized by the presence of small white 

 patches on the mucous membrane, usually of the mouth, 

 in unclean or illy nourished children. It may be found in 

 the vagina. It has been known to spread throughout the 

 body. 



