If any kind of acid be taken, in poisonous quantities, give strong pearlash-water. If ley, or pearlash, or any alkali be taken, give sweet-oil; or, if this be wanting, lamp-oil; or, if neither be at hand, give vinegar, freely. In case of stupefaction, from the fumes of charcoal, or from entering a well, limekiln, or coal mine, expose the person to cold air, lying on his back, dash cold water on the head and breast, and rub the body with spirits of camphor, vinegar, or Cologne water. Apply mustard paste to the pit of the stomach, and use friction on the hands, feet, and whole length of the back bone. Give some acid drink, and, when the person revives, place him in a warm bed, in fresh air. Be prompt and persevering. In case of bleeding at the lungs, or stomach, or throat, give a teaspoonful of dry salt, and repeat it often. For bleeding at the nose, pour cold water on the back of the neck, keeping the head elevated. If a person be struck with lightning, throw pailfuls of cold water on the head and body, and apply mustard poultices on the stomach, with friction of the whole body, and inflation of the lungs. When no other emetic can be found, pounded mustard seed, taken a teaspoonful at a time, will answer. The ground mustard is not so effectual, but will do. In case of fire, wrap a woollen blanket about you, to protect from the fire. If the staircases are on fire, tie the corners of the sheets together, very firmly, fasten one end to the bedstead, draw it to the window, and let yourself down. Never read in bed, lest you fall asleep, and the bed be set on fire. If your clothes get on fire, never run, but lie down, and roll about till you can reach a bed or carpet to wrap yourself in, and thus put out the fire. Keep young children in woollen dresses, to save them from the risk of fire. In thunderstorms, shut the doors and windows. The safest part of a room, is its centre; and where there is a featherbed in the apartment, that will be found the most secure resting-place. A lightning rod, if it be well pointed, and run deep into the earth, is a certain protection to a circle around it, whose diameter equals the height of the rod above the highest chimney. But it protects _no further_ than this extent. CHAPTER XXIII. ON DOMESTIC AMUSEMENTS AND SOCIAL DUTIES. Whenever the laws of body and mind are properly understood, it will be allowed, that every person needs some kind of recreation; and that, by seeking it, the body is strengthened, the mind is invigorated, and all our duties are more cheerfully and successfully performed.