Diseases of the Bespiratory Organs. 197 



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

 pushed to the lower end of the wiadpipe, turned round 

 several times and withdrawn, when a few worms will be 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 sacs. Oobbold made an incision in the wind- 

 pipe and extracted the worms with forceps, while Bartlett 

 succeeds with turpentine (or, better, camphorated spii'it) 



Fig. 16. 



Fig. i6— Syngamus Trachealis. Gape-worm, nat. size, and enlarged. 



smeared on the neck and which is of course inhaled. A 

 removal from the contaminated ground, the supply of pure 

 water (boiled if necessary) and an abundance of nourishing 

 diet are essential elements of treatment. 



Prevention. Burn all the worms extracted from the air 

 passages. Keep fowls from 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 the dead must be burned. Young fowls m ay be 

 raised safely indoors on the worst infested farms. 



