OIDIOMYCOSIS 



229 



neys, or nodules in the lungs. This organism may penetrate- 

 mucous tissues, and fill the lumen of vessels (Virchow). 



Tropical spruce is held by some as due to a near relative 

 of the oidium, namely Monilia psilosis. The organism is to be 

 found all along the alimentary tract. It possesses many cultural 

 characters like oidium. Vaccines are said to be of practical use 

 in therapeutics. 



FIG. 72. Doubly contoured organisms found in oidio mycosis (blastomyco- 

 sis). (From Buschko after Hyde and Montgomery.) 



Sporothricosis is a subacute or chronic infection usually of the 

 skin, but at times involving the internal organs, caused by the 

 Sporothrix Schencki. The organisms grow as delicate mycelia 

 with very numerous spores, 2-4 X 3~6/i in size. They grow best 

 upon acid media at body temperature as white fluffy masses 

 which later become brown. The disease in man takes the form 

 of firm tumefactions under the skin which may ulcerate leaving 



