The symptoms of choking are immediate, and if no relief is obtained, the sufferer will die in a few minutes. If the patient knows any thing, he will show immediate signs of distress, violent but ineffectual attempts to breathe, and the face quickly becomes a dark blue color, from the accumulation of carbonic acid in the blood. Immediate effects should be made to remove the obstruction, and continued until the physician arrives, who is to be sent for at once. Whatever is in the mouth and throat can be easily removed by the fingers; the forefinger should then be crowded down the throat to feel for other obstructions, care being taken not to push a piece of food into the windpipe. If any thing is felt, it can sometimes be pulled out by the fingers, or a hair-pin may be straightened and bent, or a piece of wire, and an effort made to fish it out. When in the gullet and beyond the fingers, it may be pushed into the stomach by a feeding-tube. Artificial respiration may be needed, but attendants must remember it is of no use until the obstruction to breathing is removed. Marbles, coins, buttons, pieces of pencils, needles, pins, and fish-bones, are frequently swallowed. The physician should be informed at once. _Directions how to Perform Artificial Respiration._--What is to be done must be done quickly; tight clothing about the neck and chest must be removed, and the mouth should be cleaned of dirt, water, or any obstruction to the flow of air. The body is then laid out flat on the back, covered, if possible, with light warm blankets, and some article should be folded and placed under the shoulders, so as to raise them three or four inches. The mouth must be kept open, and the tongue pulled well forward, as it is liable to fall backwards, and cover the opening of the wind-pipe. One person, kneeling behind the head, should grasp each arm at the elbow, and, draw them steadily around so that the arms will meet above the head. A strong pull should be made upon them, and they should be held a few seconds. These movements elevate the ribs and enlarge the chest and produce an inspiration. The arms are then to be brought to the side, and pressed strongly against the lower ribs. This last movement drives the air out of the lungs, and makes an expiration. These manipulations should be repeated, slowly and regularly, about sixteen times a minute, and should, when there is the slightest hope of life, be continued at least thirty minutes. The heart should be listened to, in order to hear if it still beats. Warmth, by hot-water bags, bricks, and soapstones should be secured, care being taken not to burn the skin. The limbs may be gently rubbed with warm cloths, though it is not so important as some well-meaning people think. The rubbing should be towards the heart.