OTHER IMPORTANT PATHOGENIC MICRO-ORGANISMS 185 



Microsporon Furfur. — This is a mold producing in man 

 the skin disease known as ''pityriasis." It is observed 

 chiefly in persons Hving under conditions of undeanH- 

 ness or among those who combine those conditions with 

 a tendency to ]:)rofuse perspiration. 



O'ldium Albicans. — This is a mokl jn'oducing in chil- 

 dren the disease of the mouth 

 known as "soor" or "thrush.' ' 



Achorion Schonleinii. — This 

 is a mold producing the dis- 

 ease known as ''favus/' is an 

 affection of the scalp, which 

 runs an extremely chronic 

 course. 



Trichophyton Tonsurans.— 

 This is a mold producing 

 the disease in man known as 

 "ring- worm." 



Poliomyelitis. — The infect- 

 ing microorganism of this 

 disease has not yet been iso- 

 lated, but is known to exist 

 the nasal secretion and 



Fig. 68. — Invasion of a 

 human hair by trichophy- 

 ton: A, Points at which the 

 parasitic fungi coming from 

 the epidermis are elevating 

 the cuticle of the hair and 

 entering into its substance; 

 X 200 (Sabouraud). 



m 



blood of infected individuals. 



It must be very small, for it 



passes through the pores of a 



Berkefeld filter. The disease is said to be transmitted 



through the bite of stable flies, but probably mainly 



through infected nasal discharges. 



