If a meal is made up of the right kind of foods, in the proper proportion, and each individual eats sufficient to assure the maintenance of the normal weight, is free from gastro-intestinal disturbances, and shows a normal resistance to disease, it is more than probable that a sufficient quantity is being consumed each day. All foods should be carefully selected, and properly prepared in order to derive the maximum benefit therefrom, and the regularity and attractiveness with which the meals are served have almost as much to do with the health and happiness of the individual, as the character of the foods included in the day's dietary. PROBLEMS (a) Calculate the dietary requirements of a nurse weighing 125 pounds, who spends 8 hours sleeping, 8 hours on duty, 2 hours at meals, 2 hours brisk walking, 2 hours in the class room, and 2 hours reading or studying. (b) Calculate the diet for a child of ten years of age, weighing 65 pounds, showing the number of calories, the amount of protein, calcium, phosphorus and iron necessary to make this diet cover the requirements of the child. FOOTNOTES: [20] "Archives of Internal Medicine," Vol. XXVII (1916), p. 916. [21] "Chemistry of Food and Nutrition," (revised), p. 186, by Henry Sherman. [22] The Same. [23] Gillett, A. I. C. P. of N. Y. [24] Table compiled from material in "Feeding the Family," by Rose. [25] "The Adequacy and Economy of Some City Dietaries," by Sherman and Gillett. [26] Part of soft-cooked egg may be given at the beginning of eleventh month; this must be given at the noon meal, and should not be included in each day's meal (two or three times a week is sufficient). [27] Dr. Hess advises the use of canned tomato juice as a substitute for orange juice when the latter is unobtainable. SECTION II LABORATORY OR DIET KITCHEN WORK CHAPTER IV METHODS OF FEEDING IN NORMAL AND ABNORMAL CONDITIONS There are several methods of feeding which have been adopted to meet the needs of the individual under various conditions: Feeding by mouth, gavage or forced feeding, rectal feeding (nutrient enemata), and inunction. ~Feeding by Mouth.~--The first method is the one used in health and in the majority of abnormal conditions. In cases where there is a certain abnormal development of the mouth or throat, and in some cases of insanity or unconsciousness, where for some reason it is impossible for the individual to swallow, this method cannot be used. ~Forced Feeding.~--With very young children and babies gavage or forced feeding is found at times to be necessary. In these cases a small rubber catheter is introduced into the stomach through the nostrils and the milk or other fluid poured through the tube. In unconscious or insane patients it is often found necessary to insert a gag (a cork will serve the purpose) between the teeth to prevent the biting of the tube when it is inserted through the mouth into the stomach.