562 SWINE IN AMERICA 



"I have found live worms in the kidneys of both the 

 pig and dog. and the kidneys were perfectly healthy, 

 and neither animal seemed to be in any way affected by 

 them. The loss of power of the hind parts of pigs, 

 which has been attributed to kidney worms, is not due 

 to a parasite, but to paralysis of the muscles of the hind 

 parts. I have made careful investigations of such cases, 

 but failed to find any worms or any disease of the kid- 

 neys. Paralysis of the hind parts would not be the symp- 

 tom of kidney disease. 



THE STRONGYLUS DENTATUS 



STRONGYLUS DENTATUS 



"This worm is found in the intestines of swine. It is 

 a slender, filiform worm about Yi inch long; the head 

 is obtuse and surrounded by six acute papillae; the 

 esophagus is short, thick and muscular ; in the male the 

 tail is truncated and provided with an oblique bursa; in 

 the female it is elongated and slender, ending in a fine 

 point ; the genital opening is near the posterior end. The 

 history of this worm is not known. It does not seem to 

 do much harm. The usual treatment for worms is nearly 

 always effectual in bringing them away. I have seen 

 quite a number of them mixed with other worms in the 

 feces of a hog that had been treated for worms. 



