No one ever knew what Dave Marshall said to Elviry, his wife, but a day or so after, little Margery, in a fine white flannel bathing suit, appeared on the sand, about a quarter of a mile below the Willows. Here any bright day from the last of June to the first week in September, a dozen children might be found at play in and out of the water. There was usually a mother or an older sister somewhere about, but it was to be noted that Mrs. Marshall never appeared. Margery came and went with Lydia. Kent was a quitter! After the rescue he decided to eschew the society of girls forever and he struck a bargain with Lydia that she could have the use of his bicycle one day a week till snow came if she would undertake the disciplining of the banker's daughter alone. For such a bribe Lydia would have undertaken to teach Elviry Marshall, herself, to swim--and so the bargain was struck. Margery, it was quickly discovered, sousing in the water with the other children was quite "a common kid" herself and though there seemed to be an inherent snobbishness in the little girl that returned to her as soon as she was dried and clothed, in her bathing suit she mucked about and screamed and quarreled as did the rest. Lydia's method of teaching was one employed by most of the children of Lake City when a new child moved into the town. She forced Margery to float face downward in the water, again and again, while she counted ten. After one afternoon of this, the banker's daughter had forever lost her fear of the water and the rest was easy. In spite of the relationship Dave Marshall had established between the two children, Margery and Lydia did not like each other. One Saturday afternoon, after banking hours, Marshall was seated on his front porch, with Elviry and Margery, when Lydia appeared. She stood on the steps in her bathing suit, her bare feet in a pair of ragged "sneakers." Her face and hands and ankles were dirty but her eyes and the pink of her cheeks were clear. "Come on, Marg," said Lydia, "and, Mr. Marshall, please, won't you come too and see how well she does it?" "Run and get into your bathing suit, daughter," said Marshall. "Elviry, want to come?" "No," snapped Elviry. "Lydia, how do you manage to get so dirty, when to my positive knowledge, you're in the water an hour every day?" Lydia blushed and tried to hide one ankle behind the other. "I think you're terrible impolite," she murmured. Dave roared with laughter. "Right you are, Lydia! I guess I'll have to hitch up and drive us all over." They drove to the Willows and Margery went through her paces, while her father watched and applauded from the shore. When they had finished and had run up and down to warm up and dry off and were driving home, Dave said, "You'd better come in to supper with us, Lydia." "No, thank you," answered the child. "Mr. Levine's coming to supper at our house and I have to cook it." "Hum! What does John Levine do at your house, so much?"