"Edward can't come," said Margaret: "he'd get tired too soon and want to go home again.""No, Edward can't come," Frances agreed. "His legs are too short. We must wait till he goes upstairs for his nap, and then we'll start."There were three children in the family: Margaret, who was nearly eight; Frances, who was six and a quarter; and Edward, who, being only half way between three and four, was still-as Frances had sagely remarked-too short in the...