118 PARASITOLOGY. 



Symptoms. — This is a serious form of intestinal 

 strongylosis, often causing great loss among cattle 

 and sheep. The first symptoms are those of diar- 

 rhoea loss of appetite, followed by gradual loss of 

 condition. The mucous membranes become pale, 

 due to the loss of blood; the hair becomes rough; 

 there is great thirst and languor ; swellings may be 

 noted about the head and chest ; the skin becomes 

 dry, hence the condition has been called paper skin. 

 The animal may die. 



Treatment. — Kamala, thymol, benzine, turpentine 

 and gasoline have been given with more or less good 

 results. The best results are probably derived from 

 the following treatment : To cattle that have fasted 

 over night give two to six ounces of gasoline once 

 a day for four or five days. The first day give one 

 to two pounds of Epsom salts. To lambs and sheep 

 give two to eight drams of gasoline, after fasting, 

 and drench with the proper amount of salts, as in 

 cattle. It is recommended to give gasoline in doses 

 sufficient to make the animal show symptoms as 

 though drunk. 



Strongylus Ostertagi (Ostertag). 



Synonym. — Strongylus Convolutus; Ostertagia os- 

 tertagi. 



Distribtttion. — Found in the middle West and in 

 the southern states ; also in Europe. 



Description. — The anatomical structure resembles 

 that of the Strongylus Contortus. The color of the 

 body is brownish yellow. The male measures one- 

 third of an inch in length, the female one-half inch. 



Animals Infested. — The ox, the sheep and the goat. 



Parts Infested. — Abomasum and intestines. 



