100 PARASITOLOGY. 



been known to ascend to the abomasum. 



Afiimal hifested. — Principally calves. 



Parts /?ifes fed.— -Small intestines. 



Symptoms. — Large numbers cause unthriftiness and 

 are said to produce colic and even inflammation of 

 the mucous membrane of the intestine. 



Treatme7it. — Same as for horse ; the dose should 

 varj^ with the size and age of the animal ; the physic 

 should consist of from one-half to two pounds of 

 Epsom salts. 



AscARis Ovis (Ovis — sheep). 



Distribution. — Found in Europe ; rare in America. 



Description. — The head is small and provided with 

 three lips with denticulated borders. The upper lip 

 is furnished with two small papillae ; the remaining 

 lips have only one papilla each. The parasite is 

 yellowish white in color ; is oviparous; is attenuated 

 at both ends. The male is four to six inches long ; 

 the female six to eight inches. 



Ajiimal hifested. — Sheep. 



Parts Infested. — Small Intestines. 



Symptoms.— Similar to those in calves. 



Treatffient .—Similar to that for calves. 



