548 PATHOGENIC FUNGI 



genie for animals. Abscesses follow subcutaneous inoculation in 

 guinea-pigs, rabbits, and mice, and death may result. Intra- 

 venous injection may result in a fatal pulmonary infection ; 

 intraperitoneal infection is often without result. 



MICROSPORON FURFUR. 



This is the organism associated with pityriasis versicolor. The con- 

 dition, which is very widespread all over the world, occurring often in 

 phthisical patients, is not looked upon as a disease of the skin, but is due 

 to the saprophytic growth of the microsporon on the skin surface. The 

 organism can be demonstrated in scrapings from the lesion, either ex- 

 amined in potash solution or in films stained by, for example, Gram's 

 method. The organism consists of an irregularly contoured crumpled 

 mycelium in segments from "7-13 /t long and 3-4 ^ broad. Associated 

 with this, there are irregular groups of double-contoured spore-like 

 bodies from 4-7 ^ in diameter (Fig. 173). Nothing further is known 

 regarding the organism, as most attempts at cultivation have had a 

 negative result, and even where cultures are said to have been obtained 

 it has been impossible to secure continued growth. 



