Diseases- of the EesjAratory Organs. 99 



factory method is to turn up a furrow in tlie pasture so 

 that the sheep may push their noses iato the ground when 

 attacked. 



Treatment. Place in a warm building to tempt the 

 larvse from the sinuses and introduce snuff, solutions of 

 salt, vinegar or tobacco, weak solutions of turpentine, etc., 

 into the nose to kill them or cause their expulsion by sneez- 

 ing. For such as remaia in the sinuses the only success 

 ful treatment is to trephine the bones of the face between 

 the front of the eye and the median line of the face, or 

 just in front of the root of the horn should that be present. 

 The sinus is then to be syringed out freely with tepid 

 water until the parasites are washed out. 



The PENTASTOMA TiENioiDES is a species of acarus which 



Fig. 14. 



Fig. 14 — Pentastoma Tsenioides, 



lives in the nasal sinuses of horses and dogs, and m the 

 mesenteric glands of sheep and other herbivora. H pro- 

 ductive of much irritation in the nose it must be expeUed 

 by a current of water after trephmmg the smus. 



PARASITES IN THE LOWER AIB PASSAGES. 



The most common are the different forms of round 

 worms which in certam animals (lambs, calves, pigs, 

 bii-ds,) may assume the dhnensions of a plague and cause 

 enormous yearly losses to a country. 



The sheep, goat, dromedary and camd harbor two round 

 worms in thehr air passages and lungs : the smaU btrm- 

 gylus Filai ia, a thread-like worm of one to three and one- 



