PHYSICAL AND LITERARY. 495 



tumor ; which happened in another cafe, 

 likewife communicated; but the ulcer, 

 after many years, was not cured, and 

 commonly proves incurable. For this 

 reafon, an ulcer, by all means, ought to 

 be prevented ; nor does a fortunate ifTue, 

 in feme rare inftances, make the remedy 

 here propofed unnecefTary. If the thick- 

 nefs is not foon carried off, the bladder 

 grows callous, the humors perhaps ac- 

 quire a vicious quality, the difeafe is in- 

 curably fixed, or may degenerate into an 

 affe<5tion of a worfe nature ; and the pa- 

 tient will, for life, be fubjedled to all the 

 mifery and inconvenience arifing from re- 

 tentions, or an involuntary emiflion of 

 urine, befides being conftantly expofed to 

 the hazard of inflammation, and its con- 

 fequences. , 



When the inflammation does not re- 

 folve in a proper time, it muft termi- 

 nate in a mortification, an abfcefs, a 

 fchirrus, or other hardnefs, of difficult 

 cure, or of dangerous tendency: And, 

 the more acute the fymptoms are, the 



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