_Acids_--_Sulphuric_, _Nitric_, _Muriatic_, _Phosphoric_, _Oxalic_, _Citric_, _Tartaric_, _Acetic_.--Give freely of magnesia or soap-water (half an ounce white soap to two quarts tepid water). Also very weak solutions of carbonate of soda or potassa may be used. Give demulcent drinks and milk-baths, cataplasms, antiphlogistics. Avoid lime-water. _Alkalies_--_Caustic_, _Potassa_, _Soda_, _Lime_, _Strontia_, _Baryta_, _and their Carbonates_.--Give diluted vinegar in abundance, four ounces vinegar to one quart water. Citric or tartaric lemonade, whites of eggs with tepid water, milk, sweet-oil. Baths, lotions, fomentations. _Arsenic._--Prompt emetic. Give freely of hydrated peroxide of iron; dose, half an ounce, frequently repeated. If this is not at hand, give magnesia in large quantities of tepid water. Demulcent drinks, baths, and counter-irritants over the stomach to relieve spasms. _Carbolic Acid._--Saccharated lime in water; also demulcent drinks. _Chloral._--Keep the patient warm in bed, with hot blankets and hot water bottles, the bottles also to be applied over the heart. A warm bath may be of advantage. If respiration threatens to fail, maintain it artificially, and apply galvanic battery (induced current), one pole over pit of stomach and the other over lower cervical vertebræ. _Chloroform._--Draw out the tongue, if retracted. Give plenty of air. Raise the body and lower the head, till the body is almost inverted. Maintain artificial respiration. Use the galvanic battery as above directed. _Copper_, Salts of.--Cause vomiting, and then give freely of whites of eggs and water, demulcent drinks, soothing clysters, lotions, fomentations. Avoid vinegar. _Corrosive Sublimate._--First, cause vomiting, then give whites of eggs in water, four whites to one quart water. Milk, demulcent drinks, and gargles. _Gases._--The antidote for chlorine is to inhale ammonia. Asphyxia by other gases, treated by cold applications to the head, plenty of air, artificial respiration. _Glass_, in powder.--Farina or light food in abundance. Then an emetic, then milk and demulcent drinks. _Iodine._--Starch-water containing albumen in large quantities, or starch-water alone. _Lead_, Salts of.--White of eggs, epsom salts, or sulphuric acid lemonade. (One drachm diluted acid to a quart sweetened water.) _Nitrate of Silver_ (lunar caustic).--Give salt water freely. _Opium and Salts of Morphine._--Cause free vomiting by sulphate of zinc, sulphate of copper, and tartar emetic, and use the stomach-pump. Then administer one-sixteenth grain atropine, hypodermically, and repeat with caution till the pupils dilate. Also give strong coffee or tea. Keep the patient awake. If depression and drowsiness are extreme, bleeding may do the patient good. _Phosphorus._--Emetic, then water with whites of eggs, magnesia in suspension, milk. Avoid oils.