One very important particular in the case of those who are delicate in constitution, as well as in the case of the sick, is the preservation of warmth, especially in the hands and the feet. The _equal_ circulation of the blood is an important element for good health, and this is impossible when the extremities are habitually or frequently cold. It is owing to this fact that the coldness caused by wetting the feet is so injurious. In cases where disease or a weak constitution causes a feeble or imperfect circulation, great pains should be taken to dress the feet and hands warmly, especially around the wrists and ankles, where the blood-vessels are nearest to the surface and thus most exposed to cold. Warm elastic wristlets and anklets would save many a feeble person from increasing decay or disease. When the circulation is feeble from debility or disease, the union of carbon and oxygen in the capillaries is slower than in health, and therefore care should be taken to preserve the heat thus generated by warm clothing and protection from cold draughts. In nervous debility, it is peculiarly important to preserve the animal heat, for its excessive loss especially affects weak nerves. Many an invalid is carelessly and habitually suffering cold feet, who would recover health by proper care to preserve animal heat, especially in the extremities. The following are useful directions for dressing a blister. Spread thinly, on a linen cloth, an ointment composed of one third of beeswax to two thirds of tallow; lay this upon a linen cloth folded many times. With a sharp pair of scissors make an aperture in the lower part of the blister-bag, with a little hole above to give it vent. Break the raised skin as little as possible. Lay on the cloth spread as directed. The blister at first should be dressed as often as three times in a day, and the dressing renewed each time. Hot fomentations in most cases will be as good as a blister, less painful, and safer. Always prepare food for the sick in the neatest and most careful manner. It is in sickness that the senses of smell and taste are most susceptible of annoyance; and often, little mistakes or negligences in preparing food will take away all appetite. Food for the sick should be cooked on coals, that no smoke may have access to it; and great care must be taken to prevent, by stirring, any adherence to the bottom of the cooking vessel, as this always gives a disagreeable taste. Keeping clean handkerchiefs and towels at hand, cooling the pillows, sponging the hands with water, (with care to dry them thoroughly,) swabbing the mouth with a clean linen rag on the end of a stick, are modes of increasing the comfort of the sick. Always throw a shawl over a sick person when raised up. Be careful to understand a physician's directions, and _to obey them implicitly_. If it be supposed that any other person knows better about the case than the physician, dismiss the physician, and employ that person in his stead.