It is desirable to cut off the hair from the immediate neighbourhood of the ring; and after the cure is effected, weaken the lotion still further, by the addition of more water, and well wash the head all over with it. It seldom happens that an internal use of medicine is requisite; but where the disease is very inveterate, we would recommend a powder to be given at bed-time once or twice. The following will answer very well for a child of seven years of age. Calomel 1 grain. Jalap, Powder 8 grains. If other applications have been tried, the cure will not be so speedy. SPRAINS Consist in straining, wrenching, or tearing of the ligaments or tough structures which bind bones together to form joints. The wrist and ankle are the joints most commonly sprained. Sprains are among the most severe accidents to which we are subject, as regards the part itself; the pain is, at the moment, excruciating, often continues so on the slightest movement, and too frequently lays the foundation of what is commonly called White Swelling. To treat a sprain properly, it should be kept perfectly at rest; and if it be of the ankle or knee, the patient must lie in bed, or on a sofa. Warm, moist flannels should be repeatedly applied for some hours, and a bread-and-water poultice on going to bed. These should be continued for some days, and no attempt made to use the joint. If the pain be very severe, and it continues so for the first or following days, leeches may be applied, and repeated if necessary. Some persons are fond of putting on a vinegar poultice at once; but this is better left alone till the tenderness has subsided, and there remains only a little pain and stiffness in the joint. Then a vinegar poultice is a very good application, as it produces a diversion of the inflammation going on in the ligaments, by bringing out a crop of pimples on the skin, at a time when the pressure of rubbing in any stimulating lotion cannot be borne. When the pain has entirely ceased, the joint must not be carelessly used; and, if it be the knee or ankle sprained, walking till the joints become weak and ache must be most carefully avoided, as irreparable mischief is thereby very often caused. Short and gentle walks only, therefore, may be taken; and may be repeated by degrees more frequently during the day, if they do not produce pain or fatigue. A joint often swells a long time after a sprain; under which circumstance it is best to bind it up with straps of soap-plaster, or a roller. CHILBLAINS. Chilblains consist of a peculiar inflammation of the skin of parts exposed to sudden alternations of temperature. They occur on the nose, ear, hands, but most frequently on the feet. The reason why they occur more frequently on the hands and feet is, because persons are apt directly they come in from the frosty air, to warm those parts at the fire. The face does not get warmed in the same manner, or its skin would be equally liable to chilblains.