It may be gathered that John Brown's feelings concerning the opposite sex had changed. They had, and he had changed in other ways, also. How much of a change had taken place he did not himself realize, until this very afternoon. He did not realize it even then until, after he and the girl in blue had met, and the customary expressions of surprise at their casual meeting had been exchanged, the young lady seated herself on a dune overlooking the tumbling sea and observed thoughtfully: “I shall miss all this”--with a wave of her hand toward the waves--“next week, when I am back again in the city.” Brown's cap was in his hand as she began to speak. After she had finished he stooped to pick up the cap, which had fallen to the ground. “You are going away--next week?” he said slowly. “We are going to-morrow. I shall remain in Boston for a few days. Then I shall visit a friend in the Berkshires. After that I may join my brother in Europe; I'm not sure as to that.” “To-morrow?” “Yes!” There was another one of those embarrassing intervals of silence which of late seemed to occur so often in their conversation. Miss Graham, as usual, was the first to speak. “Mr. Brown,” she began. The substitute assistant interrupted her. “Please don't call me that,” he blurted involuntarily. “It--oh, confound it, it isn't my name!” She should have been very much surprised. He expected her to be. Instead she answered quite calmly. “I know it,” she said. “You DO?” “Yes. You are 'Russ' Brooks, aren't you?” Russell Brooks, alias John Brown, dropped his cap again, but did not pick it up. He swallowed hard. “How on earth did you know that?” he asked as soon as he could say anything. “Oh, it was simple enough. I didn't really know; I only guessed. You weren't a real lightkeeper, that was plain. And you weren't used to washing dishes or doing housework--that,” with the irrepressible curl of the corners of her lips, “was just as plain. When you told me that fib about meeting my brother here last summer I was sure you had met him somewhere, probably at college. So in my next letter to him I described you as well as I could, mentioned that you were as good or a better swimmer than he, and asked for particulars. He answered that the only fellow he could think of who fitted your description was 'Russ' Brooks--Russell, I suppose--of New York; though what Russ Brooks was doing as lightkeeper's assistant at Eastboro Twin-Lights he DIDN'T know. Neither did I. But then, THAT was not my business.” The substitute assistant did not answer: he could not, on such short notice. “So,” continued the girl, “I felt almost as if I had known you for a long time. You and Horace were such good friends at college, and he had often told me of you. I was very glad to meet you in real life, especially here, where I had no one but Mrs. Bascom to talk to; Mr. Atkins, by reason of his aversion to my unfortunate sex, being barred.”