DIGESTIVE SYSTEM 79 



PARASITES 



Parasitic invasion of tlie tongue is not uucommon. Tlie cystic 

 form of the Taenia solium, tliat is, the cysticevcus eellulosae, fre- 

 quently occurs in the muscular portion of the tongue. The cystic 

 form of the Trichinella has also been observed in lingual muscles, 

 while psorosperms occasionally inhabit the muscle of the tongue. 

 The cystieercus cellulosse may be identified if the cysts are located 

 superficially. They are a trifle smaller than a navy bean and palpa- 

 tion, if they are of recent development, will demonstrate that they 

 contain fluid, and if a cyst be punctured the bladder worm and fluid 

 will escape. 



The cystic form of the Trichinella produces a:n inflammation which 

 is at first acute but later becomes chronic. 



Swine affected with cysticercosis or trichinosis cannot be relieved 

 and should be slaughtered where there is proper inspection to safe- 

 guard the meat-consuming public. 



Buccal Membrane 



The mucous membrane of the mouth, other than that mentioned 

 in relation to the lips and tongue, is subject to injuries of a similar 

 origin and nature and will not be further discussed here. 



STOMATITIS 



Catarrhal inflammation of the buccal mucous membrane is rela- 

 tively common and may be local or general, acute or chronic. 



Acute catarrhal stomatitis is usually caused by the ingestion of 

 improper food, although it may be associated with some general 

 infective disease or be the result of injury. 



Fermented foods may contain acids or other injurious chemical 

 substances that irritate the buccal mucosa and produce inflamma- 

 tion. Foods containing awns, beards, thorns, glass, or other foreign 

 bodies, may produce injuries of the membrane of the mouth, thus 

 providing an avenue of entrance for various microbian agents. Dis- 

 infecting solutions such as phenol, dips and corrosive sublimate, 

 may contaminate feed troughs or feed and may be sufficiently irri- 

 tating to produce stomatitis. Too concentrated medicine may also 

 produce stomatitis. Irritation may be caused by moldy feeds. The 

 practice of catching swine by means of a rope or wire over the 



