460 rOLL EVIL. 



quence. Granulation builds up regularly. Absorption re- 

 moves irregularly, carrying away any part that is fit for 

 removal ; and an irregular abraded surface, more or less of a 

 hole, sending forth a thin unhealthy pus, is called an ulcer ; 

 for the cure of which we must endeavour to remedy the 

 morbid action by exciting one more healthy, so that the 

 part being brought to the condition of a simple wound, 

 will heal. When ulcers have continued for a long time, it 

 is often necessary to employ constitutional remedies to esta- 

 blish a cure. In the generality of cases the ulcer occasions 

 great irritability of system, which must be combated by 

 opium ; tonics likewise must be given, together with a 

 liberal diet. In some cases, stable soiling, a course of car- 

 rots, or other total change of food, assists the healing and 

 restorative process greatly. The general treatment of an 

 ulcer is first to cleanse it by means of a poultice, and then 

 to stimulate it by all the means in our power, keeping up 

 the system by a very liberal, nutritious diet. 



Ulcers are often found of a greater extent internally 

 than externally ; when the fluid which is secreted by them 

 absorbs in different directions, forming narrow pipes, the 

 sides of w^hich are scirrhous, from which issues a glairy 

 discharge. These pipes are called sinuses by the surgeon. 

 In general cases, the longer an ulcer has lasted, the more 

 difficulty there will be to bring it back to a healthy state. 

 The external means employed for this purpose are usually 

 stimulating injections, or incision. Ulcers are apt to be 

 treated by farriers erroneously, by plugging up the sinuses ; 

 when the caustic penetrates farther than was intended, 

 sloughing away the diseased, and the healthy parts. The 

 true remedy is equally simple and effective, namely, to slit 

 them up, and then to lay within the divided pipe a piece of 

 tow, saturated with some caustic solution. By this means 

 the scirrhous lining wdll be cast forth, and that wdiich was a 

 sinus will be converted into a simple wound. 



POLL EVIL. 



This is the consequence of an abscess forming within the 

 bursse mucosae of the poll, and extending downwards : some- 

 times these may run underneath the cellular attachments of 

 the cervical ligament. In either case they usually, unless 



