If the wound is small, and there is no discharge from it, it may be painted with collodion or covered with boric-acid ointment (sixty grains of boric acid to the ounce of vaseline) after the first day. If large, it should be covered with cotton gauze or cloth which have been boiled or specially prepared for surgical purposes. If pus ("matter") forms, the wound must be cleansed daily of discharge (more than once if it is copious) with boiled water, or best with hydrogen dioxide solution followed by a washing with a solution of carbolic acid (one teaspoonful to the pint of hot water), or with a solution of mercury bichloride, dissolving one of the larger bichloride tablets, sold for surgical uses, in a quart of water. It is a surgical maxim never to be neglected that wounds should not be allowed to close at the top before healing is completed at the bottom. As to close at the surface is the usual tendency in wounds that heal slowly and discharge pus, it is necessary at times to enlarge the external opening by cutting or stretching with the blades of a pair of scissors, or, and this is much more rational and comfortable for the patient, by daily packing the outlet of the wound with gauze to keep it open. =BLEEDING FROM SCALP.= _First Aid Rule 1.--Cut hair off about wound, and clean thoroughly with carbolic-acid solution (one teaspoonful to pint of hot water)._ _Rule 2.--Put pad of gauze or muslin directly over wet wound, and make pressure firmly with bandage._ In case of wounds of the scalp, or other hairy parts, the hair should be cut, or better shaved, over an area very much larger than the wounded surface, after which the cleansing should be done. To stop bleeding of the scalp, water is applied as hot as can be borne, and then a wad of boiled cotton should be placed in the wound and bandaged down tightly into it for a time. Closing the wound with stitches will stop the bleeding much more effectively, however, and is not very painful if done immediately after the accident. The stitches should be tied loosely, and not introduced nearer to each other than half an inch, to allow drainage of discharge from the wound. =General Remarks.=--All wounds should be kept at rest after they are dressed. This is accomplished in the case of the lower limbs by keeping the patient in bed with the leg raised on a pillow. The same kind of treatment applies in severe injuries of the hands. In less serious cases a sling may be employed, and the patient may walk about. When the injury is near a joint, as of the fingers, knee, wrist, or elbow, a splint made of thin board or tin (and covered with cotton wadding and bandaged) should be applied by means of surgeon's adhesive plaster and bandage after the wound has been dressed. In injuries of the hand the splint should be applied to the palm side, and reach from the finger tips to above the wrist. Use a splint also. =NOSEBLEED.= _First Aid Rule 1.--Seat patient erect and apply ice to nape of neck._