102 PARASITOLOGY. 



possibly jaundice. As much as two feet of the small 

 intestines of the pig has been noted to be thoroughly 

 filled with worms, which, upon being removed, were 

 found in a tangled mass. 



TreaUnent. — The matter of medicating hogs is not 

 so easy a task as in other animals ; the medicine may 

 be put in milk or other thin fluid which is readily 

 relished by them, then pouring this into a trough 

 where all can share in the food ; it will be found 

 that they can thus be satisfactorily medicated. San- 

 tonin and powdered areca nut can be given together 

 in the following proportions : The areca nut should 

 be given in from one-half grain to one grain per pound 

 weight, with santonin one to four grains per pig, 

 depending on the size. The powdered areca nut, 

 being an irritant, acts as a purgative. 



AsCARis Margtn'ata (Marginatus — marginal). 

 Sy7iony}n.—yi2,v^ worm; Toxastrus limbatus. 

 Distribution. — Common in the United States; also 

 found in Europe and other countries. 



Descriptio7i. — The body is pinkish white in color; 

 the head is usually slightly curved and is provided 

 with two lateral membranous wings which are broader 

 behind than in front and make 

 the head resemble an Indian ar- 

 row; each lip is provided with 

 a papilla ; the male is one and 

 one-half to two inches long ; the 

 female two to three inches ; the 

 female is oviparous ; the vulva 



Fig. 37.— AsCARis Mar- ^ . , • i 



GiNATA. is located on the anterior third 



a. Cephalic Extremity. ^f ^j^g body. 



b, Caudal Extremity. 



Animal Infested. — The dog. 



