170 ULCEUS. 



mild astringent blistering ointment (No. Ill, 

 p. 148). Either of these blisters will be found 

 sufficient, and must be applied as above directed. 



CHAP. XXXV. 



OF ULCERS. 



It may be needless here to enter into a long 

 description of ulcers, as these are more particu- 

 larly treated of, in the sections on poll-evil, fistu- 

 lous withers, &c. By the term ulcer is meant, 

 when the softer parts of the body are taken up 

 into the circulating system, by the increased action 

 of the absorbent vessels, which absorption produces 

 a sore or chasm of the part, and this is accom- 

 panied with the formation of matter, sanies, or 

 some vitiated discharge ; when ulceration affects the 

 bones, it is called caries; and there generally occurs, 

 when bones become diseased, an offensive ichorous 

 discharge, and a change in the texture of the 

 bone. Ulcers or wounds so situated, are very often 

 troublesome to treat. The method of cure is, 

 first to remove the caries, by cutting it clean 

 out with a knife, or otherwise by eating it out 

 with caustics : in the former case the bleeding 

 may be stopped by covering the part over 



