86 THE CANADIAN HOESE 



When sand is present, he should be encpuraged to drink 

 freely of gruel, or drenched with linseed-oil or tea. Copi- 

 ous injections must be given ; and even after apparent re- 

 covery, doses of oil and abundance of slops should be given, 

 so as to clear the bowels thoroughly. 



When acconipanied by colic, the pain must be relieved, 

 and otherwise treated as in that disease. Dust-balls and 

 intussusception must be treated by purgatives, antispasmo- 

 dics, back-raking, and injections. Belief will sometimes be 

 given by a colic mixture allaying' the spasm, or causing a 

 change in the position of the ball. 



Constipation is to be prevented by giving occasional bran- 

 mashes, carrots, linseed, &c., with regular exercise and suffi- 

 cient water, narrowly watching the state of the bowels, and 

 regulating the diet accordingly. 



WORMS. 



Several species of worms are found in the intestines and 

 other parts of the horse. ■ The most common variety is the 

 ascaris or ciscarides, a little thread-worm, of a dirty white 

 colouri like little pieces of thread, usually from half an inch 

 to an inch long. They are sometimes found in thousands. 

 Professor Dick has observed them chiefly inhabiting the 

 mucous coat of the coecum, on the surface of which they are 

 developed in little cells, which, when matured, they burst, 

 producing, considerable irritation, and often fatal diarrhoea. 



Varieties of strongyli and oxyures also occur, and are 

 sometimes mistaken for ascaris. They are, however, dis- 

 tinct species ; the former is tapered, and terminates in a 

 spine, whereas the Fatter is blunted, with a head like a leather 

 sucker. The strongyli inhabit the coecum, colon, and duo- 

 denum ; the oxyures the coecum, mesentery, spermatic cord, 

 and i^-tfact almost every organ in the body. The tricho- 



