Mucus fistula is very easily healed in all cases, and those cases in which pus has incidentally formed are likewise not difficult to cure. All you need to do is to instill intelligence in a stupid patient, if you haven’t an intelligent one, and induce him to utilize or improvise a few home conveniences for cleansing the fistula night and morning between office visits. During the treatment of the fistula patients will be able to attend to their imperative duties. To properly explore a fistula and its branches, if any, as to whether pyogenesis (pus) has taken place or not, it is essential to have the external opening through the skin of sufficient depth and size to permit of the application of remedies over all its surface. For a mucus fistula antiseptic remedies can be applied after a thorough irrigation by hot water at a temperature of one hundred and twenty degrees, or more, for half an hour or less time, as the case may demand. Where pyogenesis (pus) has occurred in a mucus fistula there may be more or less necrotic tissue formed, which will require the use of an escharotic remedy as well as very hot water irrigation, followed by an antiseptic remedy, if not already incorporated in the hot water used. As a rule I see a fistula case once or twice a week, as the case may require. There is no packing of the fistula after the morning and evening home treatment--I have never found it essential. A T-bandage is worn, with absorbent cotton, over the opening of the fistula, preventing soiling of the clothes while attending to daily duties. Never mind what the “Ditto and Me-too” proctologists have copied or rehashed about the curing of a fistula, which they persist in calling a disease. Just be resourceful, safe, and sane in all you do, and every fistula will get well long before you have cured the chronic proctitis and sigmoiditis, of which the fistula, as a rule, is a symptom. CHAPTER XXIV. NINE RADIOGRAPH ILLUSTRATIONS OF MUCUS CHANNELS AND CAVITIES. I am indebted to Dr. Caldwell, of New York, at whose laboratory my patients were radiographed for the very excellent illustrations; and also to Dr. Albright of Philadelphia, for his assistance in the radiograph work, while attending my clinic, and who, later, with rare skill and scholarly ability, presented my discoveries in a large volume, entitled; _A Practical Treatise on Rectal Diseases, Their Diagnosis and Treatment_. The following illustrations can only give a hint of the pathological conditions that existed. Fig. 1 shows seven, and Fig. 2, eight probes inserted, which by no means indicate the number of channels or size of the cavities; twenty-five to fifty or more probes inserted would more accurately indicate the excursions of the inflammatory exudate.