Diseases of the Respiratory Organs. 191 



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

 that the sheep may push their noses into the ground when 

 attacked. 



Treatment. Place in a warm building to tempt the 

 larvae 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 remain 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 T^NioiDES is a species of acarus which 



Fig. 14. 



Fig. 14 — Pentastoma Tsenioides. 



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

 mesenteric glands of sheep and other herbivora. If pro- 

 ductive of much irritation in the nose it must be expelled 

 by a current of water after trephining the sinus. 



PAKASITES IN THE LOWER AIE PASSAGES. 



The most common are the different forms of round 

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

 birds,) may assume the dimensions of a plague and cause 

 enormous yearly losses to a country. 



The sheep, goat, dromedary and camd harbor two round 

 worras in their air passages and lungs : the small Stron- 

 qyhcs Filaria, a thread-like worm of one to three and ono- 



