Diseases of the Respiratory Organs. 105 



passed into the opening seen in tlie middle of the tongue, 

 pushed to the lower end of the windpipe, turned round 

 several times and withdrawn, when a few worms wiU be 

 found attached. It may be repeated at intervals and is 

 still more effectual if the instrument is first dipped in oil, 

 salt water, or a weak solution of carbolic acid, tobacco or 

 sulphurous acid. The treatment is only partially success- 

 ful as it fails to remove worms lodged in the bronchial 

 tubes or air saca. Cobbold made an incision in the wind- 

 pipe and extracted the worms with forceps, while Bartlett 

 succeeds with turpentine smeared on the neck and which 



Eig. 16. 



Klg. l6 — Syngamus Trachealis. Gape-worm, nat. size, and enlarged. 



is of course inhaled. A removal fi'om the contaminated 

 ground, the supply of pure water (boUed if necessary) and 

 an abundance of- nourishing diet are essential elements of 

 treatment. 



Prevention. Burn aU the worms extracted fi'om the air 

 passages. Keep fowls fi-om ground and houses which are 

 known to be infested, until they have been soaked in a 

 strong solution of salt or with crude carbolic acid or pe- 

 troleum. Suspected water must be withheld or boiled. 

 Avoid all green food from an infested locality. The car- 

 casses of th^dead must be burned. Young fowls may be 

 raised safelv indoors on the worst infested farms. 



