Clothing.--Then comes the question of clothing. It is curious how irrationally many people clothe themselves. People complain of cold hands and feet when they are wearing thin cotton undergarments, and who need only to have these changed for wool for their feelings to be at once improved. In the meantime they have been persuaded that they have a defective circulation. The usual excuse for not wearing wool is that it produces hyperemia of the skin with itchy discomfort, but this, as a rule, is only passing and is due to unaccustomedness. The coarser wools should not be worn by the sensitive. A thin cotton garment may, if absolutely necessary, be worn next the skin. There is too little variety in the underclothing that people wear. Some change from light to heavy weight and only that, but there should be a medium weight worn, and occasionally, when there is a spell of mild weather in the winter time, even during the season when heavy weight is usually worn, medium weight should be substituted for comfort's sake. It is even more common to find that neurotic individuals, who fear to catch cold, wear too much clothing, especially around the chest. Very often they alternate from this during the day to next to nothing in the evening, and by so doing subject themselves to special risks of internal congestions. When the skin is covered with too much clothing it loses the habit of reacting, and the warmth and the irritation of wool keep up an artificial hyperemia which gradually lowers the tone of the peripheral vessels. Many people wear "chest protectors," as is evident from the prominent display of these abominations in the drug-store windows. By leaving certain portions of the chest unprotected while other parts are kept over-warm, these add greatly to the risk of such disturbances of circulatory equilibrium as predispose to the infections grouped under the term "taking cold." It is not heavy clothing that keeps people warm so much as the layers of non-conducting air between the skin and the outer air. It is better, therefore, to wear three thin {168} garments than two heavy ones because of the additional layers of air that are thus confined. A paper vest, if one is driving in the wind, will probably protect better than the heaviest woolen garment worn. The wearing of chamois garments is not, as a rule, advisable because chamois does not permit free access of air and it hampers transpiration.