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1. Shave the part to be operated upon, in order that the antiseptic may not be prevented from acting upon the skin.

2. Wash the part with a watery solution (1-20) to purify the skin.

3. Direct the spray upon the part, and maintain its action and position during the entire operation and dressing, without a moment's interval.*

4. Immerse the hands, instruments and sponges in the 1-40 solution before operating, and at every interval of the operation when they are not enveloped by the spray.

5. Tie all vessels with antiseptic catgut, and cut the ligatures at the knot.

6. Place the drainage tube, or tubes so deeply in the wound as to drain all accumulating fluids; if the tube enters obliquely cut the outer extremity obliquely; lay the retaining threads on the surface.

7. If the wound is to be closed, as after amputation, use carbolized silk of sutures.

8. If strapping is required, common adhesive plaster may be rendered antiseptic by dipping it for a second or two in a watery solution of the' acid, and it is most convenient to have the solution hot; the ends should be overlapped by the gauze.

9. Apply to the cicatrizing part a layer of the oiled silk protectively dipped in watery solution, and having a hole for the drainage. 10. Apply eight layers of the gauze of such size as to cover all the wound, and the adjacent parts; dip the first layer in the solution; between the last two layers place a piece of mackintosh of smaller size than the layers of gauze, apply the last layer so as to cover in completely the mackintosh. 11. Retain the dressing by bandages of the antiseptic gauze. Inspect the wound on the following day, and change the dressing only in case the discharge is liable to extend beyond the edge of the folded gauze; during the subsequent progress of the case leave the gauze undisturbed for periods varying from two days to a week, according to the diminution of the effusion. In re-dressing, continue the spray uninterruptedly on the part; while the bandage is being cut, or removed, the patient, or an assistant, keeps his hand over the site of the wound, to prevent the dressing from rising en masse and pumping in septic air; in raising the folded gauze take care that the spray passes into the angle between it and the skin; remove the drainage tubes, cleanse them in the carbolic acid solution, and before reintroducing them cut off such portions as the granulations in the wound render necessary to bring the external extremity flush with the surface of the skin; lay aside the gauze which is soaked, but use the mackintosh again after cleaning it with carbolic solution. - Dr. Stephen Smith.

*The spray is now but seldom resorted to.