"One may reliably assume that for the man of ordinary size, who lives without doing any special muscular exercise, the fuel requirement of the body each day amounts to 2,500 calories of heat. Translated into common terms, this is the quantity of heat which would be required to raise about 25 quarts of water from the freezing to the boiling point. Miss Cauble, a special investigator of the Association for the Improvement of the Condition of the Poor, kindly estimated the cost at wholesale prices of the ingredients of different portions sold in the restaurants. These are given in Table 9 beginning on page 64 of the pamphlet from which the above table was derived. The data enable one to construct a new table which gives the estimated wholesale cost of 2,500 calories in the various familiar forms of food sold in the restaurant. This represents the minimum cost of fuel for the support of an adult during twenty-four hours without taking into consideration labor, fuel or rent which, in the case of the restaurant, must be included in the cost of the foods when they are eaten. It represents the minimal cost of food in the home. "It appears from the table given below that the cost of 2,500 calories in the wholesale market varies from $.04 in the case of boiled rice to $.61 for shad. About half of the dishes can be obtained at wholesale at a price less than $.25 for 2,500 calories, or less than a cent per hundred calories, a cost which is the standard striven for in school lunches. The table is given on the next page.