Count Rumford says: "I constantly found that the richness or quality of a soup depended more upon the proper choice of ingredients than upon the quantity of solid nutrient matter employed; much more upon the art and skill of the cook than upon sums laid out in the market." This is equally true of other dishes than soup. The skill to develop the natural flavors of a food, to render it perfectly and thoroughly digestible, to convert it into a delicate viand, cannot be acquired in a haphazard way. Cooking cannot be done by guesswork. There are right and wrong methods in the kitchen as well as in the laboratory, and there is no doubt that the awakening interest in the subject of domestic science generally is neither an accident nor a whim, but the result of a necessity for better ways of living. We live different lives from those of our grandfathers before the days of the steam-engine, electricity, the telegraph, and the telephone. Now much more energy is needed to meet each day's demand than was required a hundred years ago, and so, much more nutriment is needed to sustain that energy. When the food does not supply the material to meet the demand, the whole being suffers. A course of study in cooking taken by the nurses of a hospital, while they are still pupils, is valuable for their present and future work. A nurse with the information that such a course should give, will be able to care for the feeding of her patients more wisely,[2] will see the necessity for variety, will learn to avoid suspicious substances, such as fermented meat or fish, canned foods, etc., and will put forth every effort to secure that which is appetizing and wholesome, and suited to the needs of those in her care. She will more easily exercise patience and forbearance with the idiosyncrasies of the sick in regard to articles of diet, knowing that these are usually the symptoms of disease. The proper modes of caring for milk, eggs, oysters, and other perishable foods, the practice of economy in the use of wines, cocoa, and like costly substances, and an appreciation of the value of food materials in general, are some of the points which she will have learned. She will not forget that cleanliness in the kitchen in the preparation of all food, and in the washing of dishes, towels, waste-pails, sinks, and all receptacles in which easily decomposing substances are kept, means protection against many evils. The little knowledge of bacteriology that it is possible to give in a course in cooking, will enable her to understand that many animal foods, such as oysters, fish, and lobsters, are extremely prone to decay, and, although _apparently_ good, may have been the camping-ground of millions of organisms which have produced such changes in them as to render them suspicious articles of diet. She will, therefore, always endeavor to have such food alive if possible, or at least fresh, and to keep it in such conditions of temperature as shall preserve it in a wholesome state.