437 tinction must be drawn between perineal section-a term in constant use-and Mr. Syme's operation of external division of a stricture. The two measures are quite different and distinct, as we had occasion to point out in a former " Mirror," (THE LANCET, vol. i. 18)7, p. 378,) when describing a case of permanent stricture at the London Hospital, under Mr. Curling's care, which was cured by Syme's operation. In Mr. Henry Thomp-