The treatment of poisons in general consists of the use of substances which, by combining chemically with an injurious dose, will neutralize, as acids with alkalies and vice versa; by solvents, which take up the poison, as olive oil with carbolic acid; and by emetics which produce vomiting and dislodge the poison. The stomach pump is also used, if available, to empty the stomach, and for some poisons electricity is used. If the exact poison is unknown it is best to follow a general plan of treatment. We want an emetic, an antidote and a cathartic. For the first a draught of warm water and tickling the throat with a finger or a feather will generally succeed. For an antidote that will neutralize the great majority of poisons give a mixture of equal parts of calcined magnesia, pulverized charcoal and sesquioxide of iron, mixed thoroughly. Castor oil is the best cathartic for general use in poisoning. Here are a few special instructions for the treatment of the more common cases of poisoning: For carbolic acid give olive oil or castor oil or glycerine. For ammonia give frequently a tablespoonful of vinegar or lemon juice, and follow this with a cathartic of castor oil. For alcohol empty the stomach by emetics, warm salt water, repeated at short intervals, being the best. If the head is hot, dash cool water upon it. Keep up motion and rubbing and slapping to increase the circulation. For arsenic, fly poison or paris green, take milk, gruel water with starch dissolved in it, oil and lime water. Be sure and empty the stomach by vomiting. It may require three or four repetitions of an emetic to dislodge the sticky paste from the walls of the stomach. Oil and barley gruel or mucilage water should be given to protect the stomach. For chloroform and ether, artificial breathing must be stimulated. Lower the head of the patient and elevate the legs. Place ammonia at the nose to be inhaled, and slap the surface of the chest smartly with the fringe of a towel dipped in ice water. For sulphate of copper or blue vitriol, give an emetic of warm water or mustard and warm water. Do not give vinegar or acids. After vomiting give milk or white of egg and oil. For mercury poisoning by corrosive sublimate or calomel, give promptly the white of eggs mixed in water or milk. Empty the stomach by vomiting and then give quantities of egg and water or milk or even flour and water. For opium, morphine, laudanum, paregoric or soothing syrup poisoning cleanse the stomach thoroughly by vomiting, and then give strong coffee. The patient must be kept in constant motion. At the same time he must be frequently aroused by smart blows with the palm of the hand, or switching, and whipping the body with a wet towel. When all else fails artificial respiration should be kept up for a long time.