The employment of vinegar is, as I have said, a royal remedy, ready to the hand of any man and at little or no expense, and it needs no "learned" interpretation. It is consequently beyond the omnivorous talons of "the trade." Would it be unkind to say: "Hinc illae lachrymae"? THE PACKS. The packs mentioned as physical treatment, under Nos. 24, 25, 26 and 27, are of the greatest importance, and in fact I never undertake the treatment of any disease whatsoever without applying them as the most effective means of restoring proper circulation of the blood and removing diseased matter from the body, which is the only way to bring about a real and definite cure. The effect of the pack is the cooling of the blood. The temperature of the pack is 50 degrees and more below the temperature of the blood. In the first place this brings about quiet after unrest. Through the action of the body, which sends a large quantity of blood to the places which are touched by the cool compresses, a certain surplus of heat is created which is transferred to the compresses and retained by them as moist warmth. Under this influence the blood-vessels of the skin extend and absorb blood more freely, which is thus diverted from the important internal organs to the skin. In all cases of fever the diseased matter is dissolved in the hot feverish blood and circulates in and with it. The evaporation of the skin is increased, and with it the diseased matter is absorbed by the compresses, which consequently diffuse an unpleasant odor when removed, and when cleansed, give to the water a muddy appearance. Thus it may be observed to what extent the pack removes diseased matter from the body. Packs must be changed as soon as they cease to give comfort to the patient, and make him too warm. Highly flushed cheeks, increasing temperature and unrest are sure signs that the pack requires to be changed, and in case of high fever this may happen after 20 to 30 minutes. For short packs, such as are prescribed in all inflammatory and feverish diseases, water at from 59 degrees to 64 degrees is used. A piece of linen cloth is folded from 4 to 8 times, wrung out, but not too much, and then covered with moderately thick folds of woollen cloth. The stronger the patient and the higher the fever, the thicker should be the pack. For infants a double linen strip is sufficient. The faster the fever and inflammation recede, the longer may the pack last, up to three hours. The convalescent will enjoy the moist warmth, under the influence of which still existing diseased material is thoroughly dissolved and completely excreted. The dissolving effect of packs of long duration is most noticeable in chronic diseases. Through the penetrating effect of the moist warmth on the body or parts thereof, deposited diseased matter is dissolved, and dislodged, existing excoriations are disintegrated, and withdrawn into the circulating blood, and thus excreted.