DISEASES OF THE HOG. 83 



but they are sometimes found in the colon and 

 have been seen in the stomach; on this account they 

 have been called the maw worm. They are usually 

 about half an inch long and white in color; they 

 multiply very rapidly; their eggs are very small 

 and are often deposited on the grass and may be 

 washed into the streams or ponds of water and 

 in this way enter the stomach and bowels. They 

 are found in all the higher animals. 



Symptoms: They usually cause itching at the 

 root of the tail or by reflex action cause derange- 

 ment of other parts of the body. Though produc- 

 tive of great annoyance and even suffering, they 

 do not usually injure the health of the animal. 



Treatment: Clean out the rectum by injections 

 of warm water. Infuse two ounces of quassia chips 

 in a pint of boiling water and when cool inject it 

 into the rectum; repeat in a week if necessary. A 

 brisk purge will often wash out a number of them. 



TRECOCEPHALUS DISPAR (LONG THREAD WORM.) 



This worm is found most frequently in some part 

 of the colon and cecum, but sometimes in the small 

 intestines, either loose or with its anterior capil- 

 lary portion inserted into the mucous membrane. 

 It is often observed in great numbers in animals 

 that have died from some acute disease. I have 

 found numbers of these worms partially buried in 

 the mucous membrane, but they did not seem to 

 have caused much disturbance. They are about 

 half an inch to one inch and a half long and about 

 as thick as a common thread, and are very active 



