If the nose and throat are inflamed, this so-called water spray should be followed by an oil spray, which will be found to be most soothing and healing. A separate apparatus for this will be necessary, as an oily solution would clog an ordinary water-spray, but the principle of the spray is the same, and it is used in the same way. The following is an excellent formula: Take of menthol and carbolic acid each two grains; of eucalyptol, six drops; and of albolene, two ounces. Mix well, and fill the spray-bottle one-third full; it is to be used in the full strength. Use only enough of this spray to moisten the nose and throat; by inhaling simultaneously with squeezing the bulb, the very fine spray is carried into the larynx, and so is very useful when there is an irritation of that organ, as shown by hoarseness. If there is only a slight irritation of the parts, the use of the spray twice daily will be sufficient; the last time should be just before retiring. On windy days it will be a great protection to the mucous membrane of the throat to use it just before going out-of-doors, on the throat only. If the inflammation is severe, the spray may be used as often as every two hours. This prescription should be put up by a good druggist. Ear specialists condemn all nasal _douches_ as dangerous, on account of the possibility of the water being forced into the Eustachian tubes. _General Treatment._—First of all, the system must be toned up by the systematic use of cold baths, adapted to each particular case, tonics, iron, and cod-liver oil. It is a grave mistake to allow these cases to become chronic, as they may be the forerunners of influenza and even general tuberculosis. They need prompt and scientific treatment, which the physician alone is capable of giving. =The Ear.=—The ear is divided into three parts—the external ear, the middle ear or tympanum, and the internal ear or labyrinth. The internal ear is the essential part of the organ of hearing in which the auditory nerve ends. Its structure is very complicated. The external ear is separated from the middle ear by the tympanic membrane or drumhead. This is a thin, small, membranous sheet, which is stretched tautly across the junction of these two cavities, and vibrates inward and outward between them. The external ear collects and conducts the waves of sound to the tympanum. The middle ear, or tympanum, is an irregular cavity, situated within the bone. It is traversed by a chain of movable bones, which connect the drumhead with the internal ear, and serves to convey vibrations of sound to it. The middle ear, or drum cavity, is filled with air, and communicates with the pharynx by means of the Eustachian tube. The middle ear is lined throughout with mucous membrane, which is continuous with that of the throat and nose.