The main point in the treatment of nail puncture of the foot is to provide free exit to all matter that may collect and keep the parts as clean as possible. If this be done, the matter will not be compelled to work out at the heels, and no separation or loss of hoof will occur. Often a very severe wound is made and the treatment acts slowly. In case proud flesh accumulates, it should be burned away by a hot iron. After this operation has been performed, the cavity should be filled with balsam of fir and cotton placed over it, a piece of heavy leather fitted to the foot and held fast by the replaced shoe. This will usually end the difficulty. A veterinarian should be called in case the wound is severe or goes bad as the treatment progresses. =Treating Bruises.=--In treating bruises a different procedure is necessary. The broken tissue is concealed--beneath the skin and usually under the surface muscles. Bathing with water and acetate of lead--a quart of water and two tablespoonfuls of the acetate--will tend to lessen the inflammation. In time you may have to open the swelling for the pus to get out. After doing so, inject some wash for cleansing, using one quart of water and a tablespoonful of chloride of zinc. If the swelling remains, apply twice each month a salve made by using one teaspoonful of biniodide of mercury and three tablespoonfuls of lard. Wash occasionally, using the chloride of zinc solution. =Leg Wounds.=--Cleanse the wound with a wash composed of one tablespoonful of acetate of lead, one tablespoonful of sulphate of zinc, four tablespoonfuls of tincture of arnica and one quart of water. Use this wash frequently, every hour or so, during the first day. After that three or four applications will be sufficient. The sore should be kept lower than the skin during the healing process. If it tends to crowd up, apply a tiny bit--as much as you can place on a one-cent piece--of bichloride of mercury. This will assist in getting an even heal and the skin will grow over, leaving no blemish or swelling. =Maggots in Wounds.=--If the wound has been treated as suggested above there is no possibility of any trouble from maggots. These come from a lack of cleanliness and neglect. Of course, an animal often gets a wound and the owner is not aware of the mishap. Wounds, more or less infrequently treated, those made as the result of castration, occasionally get infected with maggots. When, for any cause, maggots are present, they must be got rid of at once. A good plan is to use chloroform, either by spraying or by throwing it in the wound in small drops from a sponge. The danger from maggots can usually be avoided if a mixture composed of one tablespoonful of turpentine, three tablespoonfuls of tar and two tablespoonfuls of lard or fish oil be smeared all around the border of the wound. CHAPTER VI Making a Post Mortem Examination