If we walk fast, or a long distance, to the bath, it is requisite to repose a little to tranquillise the lungs; then before perspiration ceases, we ought to undress quietly, and either plunge head foremost into the water, or wet the head and chest previously, to prevent the blood mounting to those regions. Whilst bathing, the head ought to be immersed several times. After the sweating or packing process, great care is to be observed in not exposing any part of the body to the air previous to entering the bath. The patient should keep in movement, rubbing himself well the whole time. This stimulates the skin and abates the cold. The time for remaining in the bath, is governed by the coldness of the water, and the vital heat of the bather; a second sensation of cold is to be avoided, or re-action may be difficult. On leaving the bath, the patient is covered with a dry sheet, upon which the attendant rubs, until the body presents a warm healthy glow. The invalid should then dress quickly, drink a glass or two of water, and walk out in the air to get warm; to effect this by the heat of stoves or beds would be acting in direct opposition to Hydropathic rules. When irritation is excited during the cure, the cold bath is sometimes suspended and tepid baths resorted to. Every house ought to be supplied with a cold bath, as its habitual use by the members of the family would secure them against colds, influenza, etc. Priessnitz says, "that the effect of going into cold water without being previously heated, and doing so in a state of perspiration, is like a blacksmith hammering upon cold, rather than hot iron. Cramp frequently attends the former, whilst a healthy reaction is always the result of the latter." XII.--IS GOING INTO THE COLD BATH IN A STATE OF PERSPIRATION ATTENDED WITH DANGER? "The transition from a Vapour-bath to snow, or to a Cold-bath, has been practised by the Russians for time immemorial" with the most beneficial results,--"this," adds Dr. Johnson, "is conclusive, that there is no danger whatever in going into the Cold-bath while covered with perspiration; unless it can be proved that perspiration produced by hot vapour is a very different thing from perspiration produced by a blanket;" and, adds the learned doctor, in his valuable work on Hydropathy, which every one ought to read; "All physiological reasoning goes to prove, that it is safer to go into cold water when the temperature of the skin has been raised.