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The daily average ration of an adult requires

4½ oz. proteid

2 oz. fat

18 oz. starch

5 pints water

About one-third of the water is taken in our food, the remainder as a beverage. To keep in health and do the best mental and physical work, authorities agree that a mixed diet is suited for temperate climates, although sound arguments appear from the vegetarian. Women, even though they do the same amount of work as men, as a rule require less food. Brain workers should take their proteid in a form easily digested. In consideration of this fact, fish and eggs form desirable substitutes for meat. The working man needs quantity as well as quality, that the stomach may have something to act upon. Corned beef, cabbage, brown-bread, and pastry, will not overtax his digestion. In old age the digestive organs lessen in activity, and the diet should be almost as simple as that of a child, increasing the amount of carbohydrates and decreasing the amount of proteids and fat. Many diseases which occur after middle life are due to eating and drinking such foods as were indulged in during vigorous manhood.