After the discharge of about a pint of bloody pus, the stream was checked by a clot of blood coming into the opening. I enlarged the opening, making it about two inches long, when a clot the size of a hen's egg came through, followed by about a pint more of bloody pus. After syringing the cavity with a five per cent. solution of carbolic acid in distilled water, and introducing a tent about four inches long, I applied compresses and bandages. Ordered the quinia continued, and whisky and beef tea. Feb. 16th, 9 A. M.,--pulse 100, but feeble; temp. 97.8. Removed dressings which were saturated with pus and blood. The latter had excited the anxiety of the Superintendent during the night, and he applied an additional bandage. There was perhaps five or six ounces of thick, flaky, yellow pus discharged. No hemorrhage; syringed the cavity with a five per cent. solution as before, and introduced a clean tent. On examining the inflamed spot over the left ilium, I detected fluctuation over the anterior part of the crest of the ilium, near the gangrenous spot, and extending down over the abdomen. However, it seemed to be superficial, at least, not deeper than the connective tissue between the external and internal oblique muscles, and not more than one inch by two in size. This I opened, and squeezed out about half a ounce of pus. Introduced a tent and applied oakum over both tents, for the purpose of absorbing the pus, and applied a compress over the main sinus or pouch, and a bandage over the whole lower part of the body. Feb. 17th, 9 A. M.,--pulse 96, temp. 99. Ordered a laxative of carbonate of magnesia. Both openings discharging very freely. The gangrenous spot over the left ilium is separating from the surrounding tissues. Removed considerable dead flesh from this spot, leaving an opening or pouch one inch in diameter, leading down to the pubis, just beneath the oblique muscles. Feb. 19th, 9 A. M.,--pulse 106, temp. 99.5. Both sinuses discharging very freely. Made an opening in the lower part of the pouch to the left of the pubis for better drainage, as the patient usually lies on the right side. Laxative has operated. After washing out both sinuses with a five per cent. solution of carbolic acid, I inject the smaller sinus with liquid vasaline.