TREATMENT.--For the purpose of meeting local indications in hyperæsthesia we may apply with a brush or by the means of the atomizer a solution of morphine and alum of the strength of 15 centigrammes of morphine and 2 grammes of alum to 50 grammes of water, or to this may be added 20 centigrammes of carbolic acid and 10 grammes of glycerin. Of this solution an application may be made each day with the hand-atomizer. The hand-atomizer is preferable to the steam-atomizer, for the reason that we know in the use of the former the strength of the solution. In the use of the steam-atomizer the medicated solution is diluted with the water of the steam, and we are {65} ignorant as to the strength of the application. The method of application by the use of the atomizer is to be preferred to the brush or sponge probang, for the reason that we produce by it no mechanical irritation of the parts. The brush or sponge can hardly be used without giving pain or discomfort. In addition to the solution above indicated, solutions of borax, of sulphate of zinc, of tannin and glycerin with chloroform, of nitrate of silver not too concentrated--2 to 10 centigrammes to 30 grammes of distilled water--tincture of aconite, solutions of the bromides, cocaine and other anæsthetics, may be used with benefit. In many cases the administration of general tonics along with the local treatment will be of the greatest value. The application of electricity to the parts through the surfaces--that is, from one side of the larynx to the other--will add to the efficacy of other local treatment. The strength of the current should not be so great as to give rise to any discomfort. The current should be continuous, and should be repeated every day for several weeks if the disorder does not yield sooner. In cases which have been induced by vicious habits of living or of exercise of the organ there should of course be an entire change of the habits. The producing cause should, if possible, be removed. The exposure of the parts to anything which gives rise to pain is to be avoided. If hyperæsthesia has been induced by unnatural methods of singing or of speaking, these should be remedied.