N.evi : Chromic Acid, 815, readily destroys with little pain. Galvano-causty, 471, is a good means of removing them. Nitric Acid, 119, is also an efficient caustic. Collodion, 818, by mechanical compression in drying, will sometimes cure.

Narcosis. (See Antidotes.) Ammonia, 238, by inhalation, especially by intravenous injection, in failure of the heart's action. Oxygeninhalations, 367, in chloroform narcosis. Faradism, 467, to stimulate the respiratory center by reflex irritation, and the respiratory muscles directly. Amyl Nitrite, 706, by inhalation in cardiac failure. Water, 86, the cold douche and cold affusion in cerebral narcosis, prussic-acid poisoning, sunstroke, etc. Ether injections, 594, Heat, 93, in alternation with cold. Emetics, Apomorphine, 736, Copper Sulphate, 308, Zinc Sulphate, 318, etc.

Neuralgia : Aconite, 715, when there is febrile excitement ; Aconitine, 715, is particularly effective in neuralgia of the fifth nerve. Alcohol, 576, in sufficient quantity, is an anodyne, but the alcoholic habit is quickly formed. Anaesthetics, 605, promptly relieve. Cod-liver Oil, 126, is of great value as a nutrient. Chloroform, by deep injection, 597, is very effective in old neuralgiae. Croton Cldoral, 619, is useful in neuralgia of the fifth. The following analgesic antiseptics, Cocaine, 561, and with atropine Antipyrin, 413, Ex-algin, 427, Paraldehyde, 584, Methylal, 586, Urethan, 588, and its congeners, Hypnone, 590, Acetanilid, 426, are efficient analgesics for the relief of neuralgia, and to stop the pains of locomotor ataxia. Morphine, 641, subcutaneously, is the most efficient remedy for the relief of pain. Aquapuncture, 809, often remarkably beneficial. Belladonna, 529, especially atropine subcutaneously, in tic-douloureuxand sciatica, but full doses must be administered. Arsenic, 173, benefits by improving the nutrition. Bromides, 653, are useful in some cases ; Cimicifuga, 522, and Oelsemium, 674, do good in simple neuralgia of the fifth, and in ovarian neuralgia. Galvanism, 468, is, next to subcutaneous injection of morphine, the most decidedly curative agent. Massage, 102, gives much relief. Copper, Ammoniated, 309, in neuralgia of the fifth, has been revived lately. Iron, 151, is required in anaemia, the usual condition. Phosphorus, 135, has proved curative in suitable cases, if pushed. Amyl Nitrite, 706, by inhalation, and Nitro-glycerin, 708, by the stomach in neuralgic dysmenorrhoea. Strychnine, 482, long continued in depressed states of the nervous system. Turpentine, 778, in reflex cases. Veratrine. 720, the ointment in superficial neuralgia. The Antiseptic Oils, 428, locally. Chloral and Camphor, 618, with Morphine, applied to the seat of pain. Wet Pack, 86, in sciatica, etc. Heat, 93. The Hypodermatic Method, 17. Infiltration Anaesthesia, 24, for the pain of surgical operations, and for neuralgia.

Nymphomania : Potassium Bromide, 657, but large doses are requisite. Camphor, 547, and Camphor Monobromata, must also be given in large doses. Tobacco, 695, Hydrobromate of Nicotine, 695, carried to nausea.

Obesity : Banting System, 53. Thyroid Extract, 435. Alkalies, 217, and Alkaline Mineral Waters, 229. Ammonium Bromide, 652. Potassa Permanganate, 157, for the attendant dyspepsia. The Vegetable Acids, 244. Nitrate of Uranium, 350, and Oxalic Acid, 245, reduce fat, but may be hurtful.

Onychia : Chloral, 618, and with Camphor Menthol, 428, Thymol, 429, a solution applied locally. Iodoform, 263, in powder or ointment. Lead Nitrate, 315, as powder, in glycerin, or as ointment, the most effective of all remedies.

Ophthalmia : Mercury, 294. Calomel dusted over the conjunctiva. Tannin, 346, also dusted over the membrane. Alum, 337, in solution in rose-water. Atropine, 530. Eserine, 690, to diminish iutra-ocular tension. Pilocarpus, 683. Conium, 665, the alkaloid conine or the succus in blepharospasm. Silver Nitrate, 305, Zinc Sulphate, 320, and other mineral astringents. Jequirety, 811, in granular lids by substitutive inflammation.

Orchitis : Ice, 88, in a bag kept applied. Iodine, 262, tincture, locally. Mercury Oleate, 294, painted over. Silver Nitrate, 304, in nitric ether, painted over. Ammonium Chloride, 240, in solution with alcohol.

Otorrhcka. : Lead, 315, lotions of. Silver Nitrate, 305, in solution. Tannin, 345, theglycerite, locally. Zinc Sulphate, 320. Mercury, 294, the brown citrine ointment. Cadmium, 326, in solution in water. Sulphocarbolates, 385. Airol, 278, and Dermatol, 164, effective topical remedies.

Ovarian Cysts : Iodine Injections, 264, of tincture or compound solution, but adapted only to unilocular cysts. Electrolysis, 471, also only in single cysts.

Oxaluria : Nitro-Muriatic Acid, 119, has special utility. Nitric Acid, 115, before meals in acid indigestion and excess of uric acid.

Oz.ena : Bromine, 371, inhalations of vapor very cautiously. Carbolic Acid, 382, solution injected, spray inhaled. Carbolic Acid and Iodine, 382, iodine and carbolic acid vaporized and inhaled. Ethyl Iodide, 267, by inhalation. Iodoform, 262, vaporized or solution in ether applied. Iodine, 262, inhaled. Nosophen, 276, Europhen, 276, and Aristol, 277, substitutes for iodoform, and having similar properties ; also Loretin, 275. Po-tassa Bichromate, 225, solution injected. Iodoform, iodo-tannin, bismuth, zinc oxide, resorcin, thymol, and similar agents applied by Insufflation, 6.