86 DISEASES OF THE HOG. 



SPIROPTERA STRONQYLINE— RUD. 



There are a number of small, whitish or reddish 

 round worms which taper somewhat towards the 

 anterior end, or towards both ends. The head is 

 small with small papillae or naked ;the male grows 

 to about half an inch long or more; the female one- 

 third of an inch or more; it lives in the stomach of 

 the pig, but generally does not produce any serious 

 disease. The fluid extract of spigelia and senna in 

 half ounce doses given every four hours until purg- 

 ing ensues usually dislodges them. 



SCLEROSTOTUM DENTaTUM (DIESINQ.) 



This is a small worm living in the intestines of 

 swine. The male is about one third of an inch long ; 

 the female half an inch long; the body is of a dark 

 color and the surface is finely marked with trans- 

 verse striae. It is quite slender and tapering at 

 each end, but the male has near the tail a three- 

 lobed expansion. The eggs are laid in the intes- 

 tines, from which they pass out into the open air 

 and are soon hatched. The mouth of this worm is 

 circular and armed with six teeth, by means of 

 which it attaches itself to the intestines and 

 pierces the tissue, feeding upon the blood. If there 

 are many of them they create such a drain on the 

 system of their host as to weaken and possibly de- 

 stroy it. It may also by its irritation of the bow- 

 els cause serious trouble and disease. An active 

 purge is the best remedy for the removal of this 

 worm. 



