IRON AND STEEL. Various kinds of polished articles, in iron and steel, are in danger of being rusted and spoiled, by an exposure to air and moisture. A mixture of nearly equal quantities of fat, oil varnish, and the rectified spirits of turpentine, applied with a sponge, will give a varnish to those articles, which prevents their contracting any spots of rust, and preserves their brilliancy, even though exposed to air and water. Common articles of steel or iron may be preserved from injury by a composition of one pound of fresh lard, an ounce of camphor, two drams of black lead powder, and two drams of dragon's blood in fine powder, melted over a slow fire, and rubbed on with a brush or sponge, after it has been left to cool. ISINGLASS JELLY. Boil an ounce of isinglass in a quart of water, with a few cloves, lemon peel, or wine, till it is reduced to half the quantity. Then strain it, and add a little sugar and lemon juice. ISSUE OINTMENT. For dressing blisters, in order to keep them open, make an ointment of half an ounce of Spanish flies finely powdered, mixed with six ounces of yellow basilicon ointment. ITALIAN BEEF STEAKS. Cut a fine large steak from a rump that has been well kept, or from any tender part. Beat it, and season with pepper, salt, and onion. Lay it in an iron stewpan that has a cover to fit it quite close, and set it by the side of the fire without water. It must have a strong heat, but care must be taken that it does not burn: in two or three hours it will be quite tender, and then serve with its own gravy. ITCH. Rub the parts affected with the ointment of sulphur, and keep the body gently open by taking every day a small dose of sulphur and treacle. When the cure is effected, let the clothes be carefully fumigated with sulphur, or the contagion will again be communicated. The dry itch requires a vegetable diet, and the liberal use of anti-scorbutics: the parts affected may be rubbed with a strong decoction of tobacco. IVORY. Bones and ivory may be turned to almost any use, by being softened in the following manner. Boil some sage in strong vinegar, strain the liquor through a piece of cloth, and put in the articles. In proportion to the time they are steeped in the liquor, ivory or bones will be capable of receiving any new impression. J.