The cold bath in the morning is a luxury of which most of us know the value. It cleanses, stimulates, and braces; and, if used in moderation, conduces to health. A word of caution is necessary to those who use their “morning tub” too heroically. The best criterion as to the advisability of continuing its use is the readiness and completeness of the reaction; and, if there is any feeling of chilliness, languor, or want of appetite, with an inability to eat breakfast, it is as well to ask whether, possibly, the cold bath had better be moderated. Persons who suffer from rheumatic pains, or sciatica, or neuralgia, ought also to be careful about continuing a practice which may be too severe for them. It is always easy to add a small quantity of warm water to the bath. There can be no doubt that a daily bath is absolutely necessary for the health of children who are tender-skinned and too young to attend to their personal cleanliness. There are certain diseases in which cold bathing is of acknowledged service:-- Foremost among these is _fever_, and it is not too much to say that many lives have been saved by the timely use of the cold bath. The use of it, however, requires great judgment and knowledge, and it is not applicable to every case, and is not without danger. In this country its use is restricted almost entirely to those cases in which the fever runs a very severe course, in which the bodily temperature rises above 105° Fahr., and the patient attains what is technically known as a condition of hyperpyrexia. The use of cold baths in fevers has been known from time immemorial, although it has only attracted the attention of modern physicians during the last ten or fifteen years. The usual method of employing this treatment is to immerse the patient in a bath of about 90° Fahr., or 95° Fahr., and by means of removal of hot water and its renewal by cold, gradually, in about 20 minutes, to reduce the temperature to 60° Fahr. In this way the temperature of the patient may be reduced as much as four or five degrees, and his sufferings are usually very much diminished. Cold bathing cannot be said to _cure_ the fever, but it prevents some of its worst results, and may enable the patient to pass through a trying ordeal unscathed. All forms of fever may, occasionally, be treated with cold baths; but this method of treatment in no case shortens the course of the fever. Cold bathing is of considerable use in some nervous affections, such as hysteria, St. Vitus’s dance, and spasmodic croup. These affections often, if not always, depend upon a depressed condition of health, and a cold bath of short duration (before a fire in winter), and followed by a brisk rubbing, is a very efficient means for their relief. Rickets is benefited by cold bathing; but for the relief of this and other conditions of weakness the greatest moderation must be observed.