DIET AND By D?v. J. T. ALLEN Food S?cci^Iut - Af.thor of “Tat in* for a Purpose."' “The JVeiv Gospel of Health,"’ Etc. (uopyrignt, oy joscpn u. 1isowiesj ECONOMICS OF EATING An army marches on its stomach. This is a well established principle in warfare. A hungry man cannot fight long, and a g. neral whoso brain is clouded by a.; o intoxication cannot conceive brilliant cr wise movements. Every ration considers case fully what ra'icn will beat support the man behind the gun—at least in war lime —and some l ave won great victories by superior feeding, notably the Jap anese, in the recent contest with Russia. The Roman gladiators were fed cn rye and wheat, and the modern ath lete is very carefully fed by the scien tific trainer. Only the average man who lias the battle cf life to fight gets no dietetic training. You cannot eat your cake and leave it, too. Suppose that I have a de gree cf vitality for daily use represent ed by SO on a scale of 100. Another might have 00 cr CO or 20. Hut it is ! certain that I can no more use my stock of vitality fer the day in two ways than I can be in two places at once. Suppose T eat for dinner fried pota toes, fresh pork, boiled cabbage, pickles and pie, with a cup of coffee. I shouid expect to be very “Icgey” during the afternoon; at least four fifths of the nervous energy that I ordinarily spend on ir.y work would have to bo spent in digesting the heavy meal. If by using the whip I persisted in spending as much vitality in brain exercise as I generally do. and ate an evening meal as usual, lack of vivacity in the hours following and disturbed sleep would be the obvious and necessary result. I might continue on this basis for days, weeks, mouths, or possibly years, if I had an iron constitution, but the end would be a breaking down, prematurely, cf the system, disease showing itself in the guise of “dyspep sia," “rheumatism,” “diabetes,” “tuber culosis,” “typhoid,” cne cr more of them, according to my inheritance from “the third and four;h genera tion,” according to excess in eating meat, starch, pickles, according to the supply in the food of iron, phosphorus, sulphur, etc., and according very large ly to the air. water, exercise, physical and mental, and the drinks I had taken during those days, weeks, months or years when 1 was prepar ing to enter a hospital or a sanitarium for classification as an acute, chronic, curable or incurable sufferer. It is said that “one man's meat is another man's poison.” This must be true to seme cx.ont; because tempera meats differ, mental states differ, and temporary bodily conditions differ. I know a man who sickens at the thought cf eating oycters, and another who cannot cat a spoonful cf honey without suffering Tho former once ate freely cf oysters and was made very sick thus establishing a subjec- j tive impression that causes nausea when the eating of oysters is suggest ed. Investigation of a number cf cases like this has led me to the ccn elusion that idiosyncrasies of this character are caused by errors in eat ing and that they are hereditary. la fact, I suppose the bilious tempera ment is the result of one habit of eat ing, the effects of which are heredi tary, the sanguine of another, the nervous of another, just as the physi cian finds in his daily practice that peculiar ccgditions of stomach, o bowel digestion or o? liver can be traced in family history. This ex planation harmonizes with that an cient saying: "The parents ate sour grapes, and the children’s teeth arc set on edge.” \et, with all rlus allowance for these peculiarities and for patholog ical conditions, such as diabetes, in which starch and sugar must be avoid ed, there should be little variation in the diet of persons of the same age, doing the same kind of work. The appetite of neither adult nor child should fca pampered. The practice of inducing over-eating by tempting the appetite with unnaturally seasoned and unnaturally mixed foods destroys the natural appetite, and, therefore, the natural enjoyment of eating. If a lad cannot enjoy a good crust ot bread he dees net need to eat. The appetite that does not prefer dates, figs and raisins to artificial sweets is not natural. The average working man needs daily about two ounces of proteid funcoagulatcd) and vegetable salts, four ounces of fat and twelve ounces i