PLASTERS, BLISTERS, OINTMENTS, &c.
450. The beneficial influence obtained from all such local applications depends upon the change of temperature they are capable of producing. Their results will vary with constitutions. Most patients, who suffer from chronic disease, point to a particular spot as the locality where they are most incommoded with "cold chills." This is the point for the application of the galbanum or other "warm plaster." A plaster of this kind to the loins has enabled me to cure a host of diseases that had previously resisted every other mode of treatment. The same application to the chest, when the patient complained of chilliness in that particular part, has materially aided me in the treatment of many cases of phthisis. In both instances, where heat was the more general complaint, cold sponging has been allowed by an equally beneficial effect.
The ingredients of plasters, blisters, ointments, lotions, &c., what are they but combinations of the agents with which we combat fever? Their beneficial influence depends upon the change of motion and temperature which they produce by their electrical or chemical action on the nerves of the part to which they are directed. Cantharides will not blister the dead—they have very little effect even on a dying man!—Dr. Dickson's Lectures.
451. Liquid Opodeldoc.—Dissolve one ounce of camphor in a little spirits of wine, and two ounces of soft soap in a little water; put these into a bottle, add half a drachm of oil of rosemary and the same of oil of thyme; shake them well together; add three-quarters of a pint of spirits of wine, and a quarter of a pint of water; set it in a warm place, and shake it occasionally, for a few days. This is an excellent remedy for bruises, sprains, chilblains, &c.
452. Extract of Arnica, for Bruises, Sprains, Burns, &c.—Take one ounce of arnica flowers, dried; that prepared by the Shakers is considered the best; and put them in a wide-mouthed bottle; pour just enough scalding water over them to moisten them, and afterwards about a pint or a pint and a half of spirits of wine. In case of a burn or bruise, &c., wet a cloth in the arnica and lay it on the part affected. Renew the application occasionally, and the pain will soon be removed.
453. For a Sprain.—Mix equal parts of spirit of camphor, distilled vinegar, and turpentine, and rub the part affected.