Rock salt, dissolved in the tub, when we are about to use the sponge, will be found to heighten the efficacy of our bath. When well sponged, from head to foot, so that our flesh and pores are thoroughly cleansed of the effects of perspiration, which so tend to clog the latter, crash towels should be applied briskly until we feel a warm glow, when soft ones may be used to dry the skin thoroughly. None save those who have tried it can be aware of the pleasure derived from this invigorating process, and the absolute comfort to ourselves, which invariably follows it and abides with us until we again perform our ablutions. The clogging of the pores is a fruitful source of disease, and should never be permitted to obtain for a single hour. If perspiration be obstructed in any way, our internal organs and whole system begin to suffer at once. All our secretions must flow freely to make health possible; therefore, the constant use of the sponge and the bath is necessary to our very existence. Any neglect in this relation will register itself at once in a sallow complexion, eruptions of the skin, and general debility, if not the active development of some serious disease. Let this be borne well in mind, and acted upon, and we shall have cause to be grateful. The bath and sponge form a primary element of physical culture, for without them the proper training of our muscles becomes utterly impossible. The pores must be kept comfortably and uniformly open before we can realize the benefit of active physical training, and this can be effected only by means of the sponge, which should be applied every morning, and after any violent exercise, which had caused us to perspire to any unusual extent. In this latter case, however, care must be taken to use tepid or slightly warm water only; for cold water, under the circumstances, might be accompanied with injurious effects, and tend to close suddenly the pores that had been already so much relaxed through over or active exertion.