FILAMENTOUS AND BUDDING FUNGI. 349 



pharynx does not penetrate deeply and does not cause de 

 struction. Frequently, it gives rise to no subjective symp- 

 toms whatever, and only accidentally comes under observa- 

 tion. In other instances it acts as a mechanical irritant, 

 giving rise to the sensation of a foreign body, and also to 

 signs of slight inflammation. The fungi adhere quite firmly ; 

 they can scarcely be removed by brushing and the like, but 

 the plugs must be pulled out individually or removed with 

 the galvanocautery. 



KERATOMYCOSES, OTOMYCOSES. 



Keratomycoses have been observed after injury of the 

 intact cornea with soiled articles (pitchforks, etc.), their 



Fig. 81. Aspergillus fumigatus; X 500 (Frankel and Pfeiffer). 



cause always appearing to be the aspergillus fumigatus. 

 The spores introduced through the agency of the trauma- 

 tism develop into filaments whose unlimited growth is 

 capable of causing destruction of the cornea. The fungous 

 mass is surrounded by a wall of leukocytes. Fructifica- 

 tion does not take place under these circumstances, nor 

 have dissemination of the germs and the formation of met- 

 astases been observed. 



Otomycoses, or myringomy coses, likewise occur, and 

 are also mostly due to the aspergillus. The presence of 



