K. pm. is the well-known disinfectant, and has been chiefly used in medicine as a local application in diphtheria and other conditions where there are fetid discharges. A proving by H. C. Allen has brought out the fact that the medicine is homoeopathic to both. There was intense irritation of nose, throat, and larynx, with sanious and bloody discharges, and constant inclination to swallow, although swallowing gave great pain. Profuse salivation and constant flow of ropy mucus from the stomach were among the noted effects. The uvula was swollen and red. Extreme fetor of the breath and sanious discharges from the nose and intense prostration appear to be the leading indications for it in diphtheria. (Kraft, who has used it largely in diphtheria, gives it in this way: A few grains are dissolved in a tumbler of water, sufficient to make it very red. A teaspoonful of this is put into another tumbler of water, and a teaspoonful out of the second tumbler is given every hour or two). The swollen uvula is also noteworthy. The exterior of the throat is very sensitive. A patient of mine made a curious use of K. pm. externally. He had a wart on the tip of his nose, for which I had given him Thuja internally, and externally in vain, and after this Causticum internally, with no better success. He on his own account applied a strong solution of K. pm. in the form of Condy's fluid, and it disappeared in a week.