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Use, when cold, for painful ulcers, bruises, &c. 532. Stimulant. Dissolve one drachm of caustic potash in one pint of water, and then gradually pour it upon twenty-four grains of camphor and one drachm of sugar, previously bruised together in a mortar. Use for fungoid and flabby ulcers. 533. Ordinary. Mix one drachm of salt with eight ounces of water. Use for foul ulcers and flabby wounds. 534. Cold Evaporating. Add two drachms of Goulard's extract, and the same quantity of sulphuric ether to a pint of cold water. Use as lotion for contusions, sprains, inflamed parts, &c. 535. Hydrochlorate of Ammonia. Dissolve two drachms of sal ammoniac in six ounces of water, then add an ounce of distilled vinegar and the same quantity of rectified spirit. Use as a refrigerant. 536. Yellow Lotion. Dissolve one grain of corrosive sublimate in an ounce of lime water, taking care to bruise the crystals of the salt in order to assist its solution. Use as a detergent. Note, that corrosive sublimate is a violent and deadly poison. 537. Black Wash. Add half a drachm of calomel to four ounces of lime water, or eight grains to an ounce of lime water; shake well. Use as a detergent. 538. Acetate of Lead with Opium Take twenty grains of acetate of lead, and a drachm of powdered opium, mix, and add an ounce of vinegar and four ounces of warm water, set aside for an hour, then filter. Use as an astringent. 539. Creosote.