For an hour the teacher had dealt with painful iteration on the part played by carbohydrates, proteids, and fats, respectively, in the upkeep of the human body. At the end of the lesson the usual test questions were put, among them: "Can any girl tell me the three foods required to keep the body in health?" There was silence till one maiden held up her hand and replied: "Yer breakfast, yer dinner, and yer supper."