OF CHRONIC ABSCESS AND ULCERATION. 459 



But perhaps it is better to turn the animal over to the 

 knacker, as these cases, which chiefly occur in poor washy 

 colts, are not likely to terminate to the proprietor's satis- 

 faction or our credit. 



WARBLES. 



These are enlarged bursae, inflamed by the pressure of the 

 saddle. When they first occur it is best to take a sharp- 

 pointed knife, and thrusting it through them, then to cut 

 outwards, so as to lay the sac open from end to end, by a 

 thrust and cut. The sac, if left in this state, would set up 

 inordinate inflammation, and produce intense irritation to 

 the system. To prevent this, take a piece of lunar caustic, 

 and freely apply it to the surface of the sac, which will 

 eftectually destroy it ; the wound may be afterwards treated 

 with chloride of zinc and water, — a scruple of the former 

 to a pint of the latter, — and be kept clean, by having a piece 

 of rag wetted with the lotion laid over the incision. 



CHAPTER XIII. 



OF CHRONIC ABSCESS AND ULCERATION. 



The process of healthy inflammation is verified in acute 

 abscess ; in chronic abscess it wants life, either from the 

 nature of the constitution generally, or the nature of the 

 part individually. Muscle suppurates most healthily, being 

 most freely supplied with blood. Healthy suppuration is 

 hardly ever witnessed in cartilage or tendinous structures. 

 In such parts the lymph eff'used is imperfectly formed, and 

 the after changes are naturally slow. After the lymph has 

 been eflused, it remains in a state of induration, and when 

 an outlet, natural or artificial, is made, it then happens, that, 

 instead of a healthy granulating process, unhealthy ulcera- 

 tion follows. 



Ulceration is a process attended with imperfect granula- 

 tion. The imperfect granulations secrete an impure pus, 

 which is mixed with a thin irritating liquor. The imper- 

 fect granulations, moreover, cannot fulfil their purpose of 

 building up, whereas absorption continues active, and thus 

 a loss, instead of an increase, of substance is the conse- 



