DISEASES OF THE STOMACH AND INTESTINES. 



383 



and sometimes caked to the iseces. Eupture of the colon some- 

 times takes place from the extreme distension. 



Purgatives should not be pushed too strong for several days, 

 but all the mild purgatives should be tried. If these fail, then it 

 becomes necessaiy to employ more powerful remedies; but these 



Fig. 110 — Impaction of the Colon. 



should not be used under five or six days, 

 pine should then be used hypodermically. 



Eserine and piloca^^ 



HAEMORRHOIDS, OR PILES. 



The horse seldom suffers from piles, but the dog frequently is 

 thus affected. There is, at first, congestion of the mucous mem- 

 brane at the verge of the anus, and subsequently dilatation of the 

 haemorrhoidal veins, fomiing small tumors. These sometimes 

 protrude, and bleed frequently. The diagnostic symptoms of 

 piles are switching of the tail, and a tendency to rub it against the 

 wall, pain during the act of defacation, and the faeces are tinged 

 with blood. Examination of the anus will reveal the presence of 



