THE MOST COMMON DISEASES OF SWINE 



559 



in doses of from 15 to 20 drops, three times a day, fol- 

 lowed by castor oil or epsom salts, is useful. The cedar 

 apple, an excrescence found on the red cedar, has been 

 used with good results, in doses of from 20 to 23 g-rains 

 of the powder, repeated three times a day. followed by a 

 physic. 



THE ROUND WORM 



THOKX- HEADED WORM 



"This is quite frequently found in the intestines of 

 pigs; it is easily known by the peculiar proboscis, which 

 bears several circles of small but sharp hooks. They 

 locate usually in the small intestines of the pig, where 

 they fasten themselves by means of the spiny proboscis 

 mentioned above, this being pushed into the lining mem- 

 brane of the intestine. In some cases they liore through 

 this and migrate to other parts of the body, where their 

 j)resence causes great disturbance. The eggs of this 

 worm pass from the hog and are eaten by the grubs of 

 certain large beetles ; in the stomach of these grubs the 

 eggs dexelop into embryos, or, rather the embryos al- 

 ready de\-eloped are set free and bore through the in- 

 testine and locate themselves in the body of the grub. 

 Here they become encysted and remain dormant until 

 the grub is eaten by the pig, and then once in the stomach 

 or intestine of this animal it develops into a worm at 

 once. The color of this worm is white or bluish white, 

 the female being from 5 to 20 inches in length, while the 

 male is from 3 to 5 inches long. The female is very 



