IN the last volume of the Red Cross series the four American girls spent six months in tragic little Belgium. There, in an American hospital in Brussels, devoted to the care, not of wounded soldiers, but of ill Belgians, three of the girls lived and worked. But Eugenia went alone to dwell in a house in the woods because the cry of the children in Belgium made the strongest appeal to her. The house was a lonely one, supposed to be haunted, yet in spite of this Eugenia moved in. There the money of the girl whom her friend had once believed "poor as a church mouse" fed and cared for her quickly acquired family.