Some months ago I read an article before the New York Obstetrical Society giving simply a short description, accompanied by some drawings (for which I expressed my gratitude to Dr. John Aspell of New York) of an operation which I devised while delivering my course of lectures at Dartmouth Medical College last year. I, at that time, presumed to designate it as "Dudley's Operation for the Relief of Severe Cases of Recto-Vaginal Fistula," because, so far as I was able to learn, in looking over the record of such cases at hand, it was original with myself and rather unique in procedure; nevertheless it was successful, and, in my judgment, it will in the future receive recognition from the profession, and take its place as a surgical relief for such a condition. As that article has never been published, except in abstract, I may be permitted to again give a