This general uniformity in proportion of protein makes it easy for the housekeeper who does not wish to enter into the complexities of food values to make sure that her family is getting enough of this nutrient. From the investigations carried on in the Office of Experiment Stations the conclusion has been drawn that of the total amount of protein needed every day, which is usually estimated to be 100 grams or 3-1/2 ounces, one-half or 50 grams is taken in the form of animal food, which of course includes milk, eggs, poultry, fish, etc., as well as meat. The remainder is taken in the form of bread and other cereal foods and beans and other vegetables. The portion of cooked meat which may be referred to as an ordinary "helping," 3 to 5 ounces (equivalent to 3-1/2 to 5-1/2 ounces of raw meat), may be considered to contain some 19 to 29 grams of protein, or approximately half of the amount which is ordinarily secured from animal food. An egg or a glass of milk contains about 8 grams more, so the housekeeper who gives each adult member of her family a helping of meat each day and eggs, milk, or cheese, together with the puddings or other dishes which contain eggs and milk, can feel sure that she is supplying sufficient protein, for the remainder necessary will be supplied by bread, cereals, and other vegetable food. The nutrition investigations of the Office of Experiment Stations show also that there is practically no difference between the various cuts of meat or the meats from different animals with respect to either the thoroughness or the ease with which they are digested. Therefore, those who wish to use the cheaper cuts need not feel that in so doing their families are less well nourished than by the more expensive meats. RELATIVE VALUES AND PRICES OF THE CUTS OF MEAT