Most of you children are too young to choose what clothes you will wear. Others decide for you. You know, however, that woolen under-garments keep you warm in winter, and that thick boots and stockings should be worn in cold weather. Thin dresses or boots may look pretty; but they are not safe for winter wear, even at a party. A healthy, happy child, dressed in clothes which are suitable for the season, is pleasanter to look at than one whose dress, though rich and handsome, is not warm enough for health or comfort. When you feel cold, take exercise, if possible. This will make the hot blood flow all through your body and warm it. If you can not, you should put on more clothes, go to a warm room, in some way get warm and keep warm, or the cold will make you sick. TAKING COLD. If your skin is chilled, the tiny mouths of the perspiration tubes are sometimes closed and can not throw out the waste matter. Then, if one part fails to do its work, other parts must suffer. Perhaps the inside skin becomes inflamed, or the throat and lungs, and you have a cold, or a cough. ALCOHOL AND COLD. People used to think that nothing would warm one so well on a cold day, as a glass of whiskey, or other alcoholic drink. It is true that, if a person drinks a little alcohol, he will feel a burning in the throat, and presently a glowing heat on the skin. The alcohol has made the hot blood rush into the tiny tubes near the skin, and he thinks it has warmed him. But if all this heat comes to the skin, the cold air has a chance to carry away more than usual. In a very little time, the drinker will be colder than before. Perhaps he will not know it; for the cheating alcohol will have deadened his nerves so that they send no message to the brain. Then he may not have sense enough to put on more clothing and may freeze. He may even, if it is very cold, freeze to death. People, who have not been drinking alcohol are sometimes frozen; but they would have frozen much quicker if they had drunk it. Horse-car drivers and omnibus drivers have a hard time on a cold winter day. They are often cheated into thinking that alcohol will keep them warm; but doctors have learned that it is the water-drinkers who hold out best against the cold. Alcohol can not really keep a person warm. All children are interested in stories about Arctic explorers, whose ships get frozen into great ice-fields, who travel on sledges drawn by dogs, and sometimes live in Esquimau huts, and drink oil, and eat walrus meat. These men tell us that alcohol will not keep them warm, and you know why. The hunters and trappers in the snowy regions of the Rocky Mountains say the same thing. Alcohol not only can not keep them warm; but it lessens their power to resist cold. [Illustration: _Scene in the Arctic regions._] Many of you have heard about the Greely party who were brought home from the Arctic seas, after they had been starving and freezing for many months.