H VETERINARY LECTURES 



ulceration of this part sets in, it seldom, or never, heals. There 

 seems to be a dissolution, or death of the minute structures, which 

 the natural body has not tone enough to reproduce. 



30. Ulcers are of various kinds ; viz., healthy, inflamed, indolent, 

 weak, sloughing, and specific. They are not very common in domestic 

 animals, though cattle and sheep occasionally suffer from them, as 

 the ulcers seen on the face in Stomatitis pustuloses, and in foot and 

 mouth disease. Owing to the great difference in the nature of the 

 various ulcers, their treatment should be under the eye of the pro- 

 fessional practitioner. Stimulating applications are required for 

 dressing the sores, while a generous, easily digestible diet is neces- 

 sary, with tonic and alterative medicine. Ulceration heals by granu- 

 lations. 



31. Mortification, or Gangrene, is the death of a part, and 

 arises from a variety of causes, independently of being one of the 

 results of inflammation, such as a loss of nerve power, the plugging 

 of a bloodvessel, and the want of blood in the part, etc. We have 

 both moist and dry gangrene. Gangrene is moist when the tissues 

 undergo softening or liquefaction. It is dry, from obstruction of the 

 circulation, when the parts contain little fluid ; for example, senile 

 gangrene in old people, affecting the big toe. 



32. Slough, the throwing off of a dead or mortified part, which 

 may be complete or partial. The tissues may be involved to a 

 greater or lesser extent, when the morbid process is arrested and a 

 line of demarcation is then formed between the living and dead 

 structures ; the dead portion sloughing off, as is seen in mares and 

 cows when the passage has been damaged in difficult parturition ; 

 or the sloughing off of one or more quarters of the udder in mares, 

 cows, and sheep from extensive inflammation of the mammary 

 gland. When these occur, Nature should be left to herself as much 

 as possible, and the strength of the patient maintained with good 

 nutritious diet. 



33. When an extensive injury has been done to any portion of 

 the body, more particularly the thick muscular part of the hips and 

 quarters — being torn and lacerated by some foreign body, such as a 



