PARASITES. 



59 



vermifuges (oil of turpentine in milk, male-fern, etc.), and 

 burning both it and the sheep's droppings. 



LARD- WORM OF THE HOG. 



This worm ( Stephanurits Dentatiis) is from one to one and 

 three-fourths inches long by one-thirteenth inch broad, and is 



Fig. 7,— StephanurusDentatus; a, male; h, female; c, head magnified. (Verrill.) 



found in almost all parts of the body of swine. It is frequent 

 in the liver, kidney, and the fat about the spare-rib, but has 



Fig. 8.— Eustrongylus Gigas. (Cuvier.) 

 been found in the air-passages, the heart, the veins, the mesen- 

 tery and elsewhere. In many cases no impairment of the 

 health is observed. But irritation of important organs like the 

 kidney or liver may lead to weakness of the hind parts, 



