Actinomycosis. 



319 



spicules of grain or other stiff particles of food t(^ which the fungi 

 are adherent; or they may gain access to the tissues- through 

 scratches and similar lesions of the skin. ' Examples of such mode 

 of infection are common. Persons who put heads of grain into their 

 mouths or who accidentally swallow portions of such heads or who 

 have been injured while harvesting, have been known to develop 

 at the points of injury (gums, throat, hands) actinomycotic ab- 

 scesses and growths. Swine pastured in stubble land where their 

 teats are casilv wounded by the stiff straw stubble are not infre- 



Zu nffen b csis 



©?*■ 



Rachenrvand 



Fig. 80. 



Fiiugous actinomvonsis in pharynx of cow. Actiiioin iiciiiit . actinomycotic tumor. 

 h'lUliciiinnul, wall of pharynx. Zuninnhnxix. base ot tongue. 



quenth known to develop actinomycosis of a mammary gland. 

 Cattle frequently show actinomycosis of the t®ngue, gums or lips 

 along with the presence in the tissues oi spicules of grain or other 

 food materials which have been forcibly lodged in between the teeth, 

 in the pharynx, etc. Occasionally in castration the fungi from the 

 straw of the bedding get into the operation wound and set up acti- 

 nomycosis of the stump of the seminal cord and scrotum (for de- 

 tails cf. Schlegel and Kitt*). The occurrence of actinomycosis oc- 

 casioned in some such accidental way (pasturing in stubble fields) 



*Hnnrn>. der pathoij. Mikrnon/.. v. Kolle and Wassermann : Gustav Fischer, 

 Jena, 1003. Kift liactcncnktindr fiir Tierdrzte, W Autl. W len.. 1JU4, 



