The teaching of methods of preserving is primarily the function of a school, and every suitable school building should be employed for it. The old-fashioned preserving meant time, drudgery, expense, quantities of sugar, and doubtful results. A demonstration of the newer methods and the opportunity for community canning should be given by the school to the neighborhood. Community canning induces a far more effective conservation of food than is possible for the individual kitchen. Few households can afford to buy and store the vast kettles, the perfected drying and dehydrating ovens, which can be included in the equipment of a school teaching the scientific preserving of food and vegetables. As this is done almost wholly in the summer, it would not interfere with the term's work of the pupils and, in fact, offers the high-school girls an excellent opportunity to assist in civic service of a most practical nature. In the summer of 1917 Seattle maintained 20 centers for home-economics teaching for adult women, the government bulletin "How to Select Food" being used as a textbook. There have been wholesome experiments in community canning in Lakewood, and in Bernards Township, New Jersey. In the latter in each school was an experienced teacher to supervise the work of preserving performed by high-school girls of the neighborhood, the fruits and vegetables being sold by the townspeople to the school or brought by them to be conserved by coöperative canning for their own use in the future. This service of the girls was on an equality with that of the boys who belonged to the agricultural army. In Kansas City the surplus garden products canned by schoolgirls were used for the school lunches. England's schools now have "open days" on which parents may be admitted to receive the instruction given to the children in the economical cooking of the food which the food controller's instructions show is likely to be available for general consumption; also (quoting from a letter from Sir Robert Blair of the London County Council, May 30, 1917) the responsible mistresses of the evening schools and the domestic-economy staff employed in these schools are organizing traveling kitchens in 29 boroughs within the county. These traveling kitchens form practically a demonstration set of apparatus by which the simplest forms of cookery can be shown to 100 or 200 people. The demonstrations are well attended, and the people in small villages thus have the opportunity of those in larger settlements to learn from experts methods of making palatable the food products less well understood.