"I don't know. It's something shiny, but it isn't a bird, because it doesn't move." "Birds aren't shiny, anyway," objected Beatrice. "Let's eat our lunch." "I'm willing, for it's getting heavy, and I'd rather carry it inside." Beatrice laughed until the tears rolled down her cheeks. "That's the first time I ever heard you say anything funny," she said, wiping her eyes. "Mr. Ronald is always saying funny things." A dubious smile crossed Robert's face, and there was a long silence. "I wish you'd show me that shiny thing again, Cousin Rob," she said at length; "I'm interested in it." "You didn't seem to be." "That's because I was hungry," she explained. "I feel better now, and by the time we've finished our lunch I'll be absorbingly interested in it." Robert stood on the sand, in the same place as before, and saw the silvery gleam again. Then she took his place and saw it, too. "Why," she said, "isn't it queer? Do you think it's the sun on a birch?" "No, it's too high, and birches don't often grow on the very edge of the shore." "That isn't the edge." "Well, it's near it. The light just hangs in the air. There doesn't seem to be anything behind it. I've often seen stray gleams in the woods and tried to find them, but I never found anything. It's a daylight will-o'-the-wisp." "Let's follow this one," suggested Beatrice. They walked along the hard sand, close to the water, stopping every few steps to find the gleam. Sometimes it was only a thread of light, detached and unrelated to anything around it, then in other places it was a white glare, like the reflection thrown from a mirror. Often they lost it, but found it again a little farther on. Beatrice was tired but determined, and kept on for what seemed miles. Then they stopped several times without finding it. "Let's go up into the woods," she said; "perhaps we'll see it again from there." They climbed the steep bluff of sand, with the aid of bushes and cotton wood saplings, and for an instant caught the light again, then it vanished. The girl was pale, and Robert feared they had come too far. "We'll go back," he said, "as soon as you rest for a little while. Why didn't you tell me you were tired?" "Because I'm not," she retorted. "I'm willing to rest a little while, but I'm going to find it." They sat down under the spreading branches of an elm for a few minutes, then, in spite of his expostulations, Beatrice started north again. "We can walk till midnight," he pleaded, "without finding it, and it's foolish, anyway." "No, it isn't; see there!" In the air, between the bluff and the lake, hung a shimmering thread of light which seemed close by, and all at once he became as eager as she. They walked rapidly for a few moments, then Beatrice stopped. "Why," she said, in a high key, "it's a house!" "Be careful," warned Robert, "we'd better go back." "I'm not going back till I see. I've come too far!"