CHAPTER VIII. 



PORTALS OF ENTRY AND AVENUES OF EXIT 



OF MICRO-ORGANISMS IN THE VARIOUS 



DISEASES. 



Actinomycosis (''lumpy-jaw," "wooden tongue"); 

 disease of man and domestic animals, particularly 

 bovines. 



(a) Cause: Actinomyces hovis (ray- fungus) ; jorms 



spores. 



(b) Localized: Lungs, bowels, subcutaneous tissues; 



often about jaw or tongue. 



(c) Entry: Through mouth and nose with food; 



through wounds. 



(d) Exit: Sputum, feces, and pus from lesions. 



^(e) Contracted: Doubtful whether can be communi- 

 cated directly, either from animal to 

 man, or from man to animal. Barley, oats, 

 or rye, seem to be vehicles for the fungus. 



(f) Disinfection: Since the actinomyces form spores, 



disinfecting agents are same as for anthrax 



and tetanus. 



The ray-fungus can be seen with the naked eye in 



the pus and secretions of lesions as whitish or yellow- 



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