134 THE HOG. 



worms, and although to many of our domesticated animals a dan. 

 gerous medicine, it may be administered with perfect safety to the 

 hog. Common salt may be also given with advantage, and should 

 be mingled with the food. Nor must it be supposed that because 

 no worms are seen to come away from the animal the treatment 

 may be discontinued, or that there are none ; hundreds of them die 

 in the intestines, and there become digested and decomposed, and 

 go through the same processes as the food. 



THE BLADDER. 



This organ seems to be but little subject to disease in swine. 

 Its position beneath the rectum and genital organs contained in the 

 pelvic cavity protects it in all animals from external injuries ; and 

 the pig not being exposed to those causes which render the horse 

 and dog peculiarly liable to disease of the bladder, namely, speed, 

 long and fatiguing exercises, &c., seems to be comparatively exempt 

 from it. 



There is, however, a case narrated in the " Veterinarian," by Mr. 

 Reid, V. S., which we shall quote. 



VESICAL CALCULI. 



"A barrow-pig that to the seventh month had manifested perfect 

 health, from that period fell rapidly away (although its appetite re- 

 mained unimpaired,) so much so in fact that in two months more it 

 was a mere bag of bones, and the owner had it destroyed. He 

 attributed this decline to a difficulty in passing its urine, which dis- 

 tressed the animal to such a degree that every time it wanted to 

 stall it quite moaned with pain, rolling upon its back, arising, and 

 again posturing itself for stalling, arching its spine, and making vio- 

 lent efforts, which too often were ineffectual. At other times, and 

 indeed oflenest. he after much straining succeeded in passing a little 

 urine, but this was speedily followed by fresh efforts. Occasionally, 

 after having rolled about and laid on its back, it obtained relief by a 

 flow of urine in a full stream, 'fhe urine was at all times perfectly 

 clear." 



This account was sufficient to draw Mr. Reid's attention to the 

 presence of vesical calculi. He regretted that he had not been called 

 in during the life of the animal, that he might have made it the sub- 

 ject of operation, and requested permission to examine the carcass. 



The bladder was half full of limpid urine, in which floated the 

 stone. The internal coat of the bladder about the inferior part ex 

 hibited slight blushes of inflammation. All around the neck it wa 

 deeply inflamed, and thence the reddening spread about an inch intr? 

 the urethra. The peritoneum also exhibited a light '.int. 



