The data here given are inadequate to cover the industrial situation, but they show clearly that heavy work cannot be accomplished without a sufficient amount of food-fuel. The food-fuel with which to accomplish work is necessary not only for the soldier, but for the workman behind the line, and it should be adequate in quantity, satisfactory in quality, and not exorbitant in cost. In virtue of the world-wide scarcity of food, the work of the individual should be worthy of the food which he eats. Tables showing the cost of various wholesome food-stuffs about July 1, 1917, are here reproduced for the benefit of the reader. The tables were prepared by Dr. F. C. Gephart and issued by the Department of Health of the City of New York in a leaflet edited by Doctors Holt, La Fetra, Pisek, and Lusk on the subject of food for children. If the world is seeking after energy in the form of food-fuel, the world is rightly entitled to understand the value of its purchases. It must be clearly understood that people are always destined to look with hopeful anticipation toward the enjoyment of a meal. They will instinctively "eat calories" just as they instinctively "eat pounds." They _buy pounds_ of food, and they could buy more intelligently if they knew the energy value of what they buy. Cost of 1000 Price per calories, pound, cents cents TABLE 1--_Cost of Fats._ Cottonseed oil 7.3 31 Oleomargarine 8.5 30 Peanut butter 8.8 25 Butter 11.9 43 Olive oil 12.1 51 Bacon 13.8 37 Bacon, sliced, in jars 23.8 65 Cream (extra heavy, 40 per cent.) 37.7 65 (1 pint)