This bath can be taken in a common baking-dish, or any shallow vessel that can be kept flat on the ground. To take this bath, place a rug or blanket on the ground, and at the end of it, the vessel, containing water about two inches deep. The patient should extend himself on the rug so that his head may reach the dish or bason; then place the back of the head in the water, and keep it there three or four minutes; then each side of the head for the same time, and finish the operation by again subjecting the back of the head to the bath for two minutes. This process relieves headache. In cases of brain fever, and other diseases which cause great heat or pain in the head, these baths are frequently resorted to whilst the patient is in bed,--the back part of the head of the patient being placed in water, which is renewed when hot. In inflammation of the eyes, deafness, or loss of smell and taste, these baths are of great utility. XXI.--FINGER AND ELBOW BATHS. The wounded finger is placed in a glass of water; and there are cases where a glass is affixed by a string to the wrist, and the patient keeps the finger constantly in the bath. The elbow bath is used whenever the hand is wounded: it draws off the heat, and lowers the inflammation. XXII.--LEG BATH. The thighs and legs, when afflicted with ulcers, ringworms, etc., ought to be put into a bath, so as to cover the parts afflicted, for an hour or longer. This bath acts as a stimulant. Other members of the body may likewise be subjected to baths; but their necessity must, be determined by circumstances. XXIII.--FOOT BATH. This bath acts derivatively, and is employed as a counteracting agent against pains of the head, inflammation in the face, congestion to the upper regions of the body, fainting fits, bleeding of the nose, or spitting of blood. Priessnitz prescribes cold foot-baths to effect the same object that the faculty endeavour to promote by warm ones. The difference between a cold foot-bath and a warm one is, that after the cold one, a warm glow succeeds and remains; whilst cold feet are the necessary consequence of a warm bath. After the feet have been in cold water for some time, the water becomes tepid from the heat extracted. If the feet are put into hot water, heat, instead of being eliminated from the system, is brought to it--the very opposite to what is intended. Sometimes, water at a temperature of 62 degrees is prescribed.