A linen sheet, (linen is a better conductor than cotton,) large enough to wrap the whole person of the patient in it (not too large, however; if there is no sheet of proper size, it should be doubled at the upper end) is dipped in water of a temperature answering to the degree of heat and fever, say between fifty and seventy degrees Fahrenheit, and more or less tightly wrung out. The higher the temperature of the body, and the quicker and fuller the pulse, the lower the temperature of the water, and the wetter the sheet. This wet sheet is spread upon a blanket previously placed on the mattress of the bed on which the packing is to take place. The patient, wholly undressed, is laid upon it, stretched out in all his length, and his arms close to his thighs, and quickly wrapped up in the sheet, head and all, with the exception of the face; the blanket is thrown over the sheet, first on the packer's side, folded down about the head and shoulders, so as to make it stick tight to all parts of the body, especially the neck and feet, tucked under the shoulders, side of the trunk, leg and foot; then the opposite side of the blanket is folded and tucked under in the same manner, till the blanket and sheet cover the whole body _smoothly_ and _tightly_. Then comes a feather-bed, or a comforter doubled up, and packed on and around the patient, so that no heat can escape, or air enter in any part of the pack, if the head be very hot, it may be left out of the pack, or the sheet may be doubled around it, or a cold wet compress, not too much wrung out, be placed on the forehead, and as far back on the top of the head as practicable, which compress must be changed from time to time, to keep it cool. Thus the patient remains.