THE DISEASES OF SHEEP 327 



feed. The writer believes good feed and change of 

 pasture will make unnecessary much tonic. 



HUSK, HOOSE OR PARASITIC BRONCHITIS. 



There is a minute parasitic worm called Strong- 

 ylus filaria that inhabits the bronchial tubes, caus- 

 ing the animal to cough and run at the nose, some- 

 times bringing death. In the opinion of the writer 

 this is fortunately not a very prevalent disease in 

 America. The remedy is thought to be to fumigate 

 with sulphur. The writer has tried the remedy and 

 though the lambs treated did not have the disease 

 for which he treated them they mostly survived 

 the operation. What they had, and what most 

 coughing, emaciated lambs have, is a related para- 

 site, of far more import to us all, the dreaded stom- 

 ach worm. 



THE STOMACH WORM. 



This little worm is but % of an inch long and 

 about as thick as a hair. It lives in the fourth 

 stomach and especially afflicts lambs. It causes the 

 diseases (or symptoms, rather) of " paper skin," 

 " black scours, " "lamb cholera" and so on. It 

 attacks lambs at any age after they begin to nibble 

 grass until cool weather comes in the fall. It is 

 the smallest parasite yet mentioned in this list of 

 diseases and has wrought a hundred times the havoc 

 that all others have together. It has devastated 

 whole regions so that the sheep industry has been 

 given up and men have taken to breeding swine in- 

 stead. The stomach worm is responsible for gullied 



