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refusing food altogether, loss of condition, and a morbid 

 appetite for stones, gravel, ashes, sand and earth. The dung 

 becomes soft, losing its ball-shape, and adhering to its legs 

 and tail, making the shrub appear quite filth)-. This disease 

 cannot be prevented, as it is liable to come from wild and 

 domestic animals alike, but it is easily cured. Take turpen- 

 tine and linseed oil, two parts of oil and one of turpentine, 

 and mix in a strong decoction or tea, made of worm seed, 

 and drench the sheep about twice a week. In two or three 

 weeks it will get well, and begin to fatten. An old sheep, 

 or after six years of age, will not have them. 



THKEAD WOEMS 



are also common in sheep. Affected with these they will 

 lose flesh rapidly, and have diarrhsea constantly. The 

 worms will be seen about the vent. Salt and copperas ad- 

 ministered freely will soon relieve them, or if that does not 

 then use the turpentine and linseed oil. There are many 

 other forms and kinds of worms, but the treatment is the 

 same. They must be well fed after treatment. 



Sheep are infested with worms in the nose, called astrus 

 ovis (Sheep gad-fly), and produced from the eggs of a large 

 two-winged fly. The frontal sinuses above the nose in 

 sheep and other animals are the places where these worms 

 live and attain their full growth. These sinuses are always 

 full of a soft white matter, which furnishes these worms 

 with a proper nourishment, and are sufficiently large for their 

 habitation, and when they have acquired their destined 

 growth in which they are fit to undergo their changes for 

 the fly-state, they leave their old habitation, and falling to 

 the earth, bury themselves there, and then they are hatched 

 into flies. The female, when she has been impregnated by 

 the male, knows that the nose of a sheep or other animal is 

 the only place for her to deposit her eggs in order to their 

 coming to maturity. The fly produced from this worm has 



