"Why, what can be more harmless!" he protested, cheerfully, and then he went on: "More harmless than music?—nothing, nothing! Song is the solace of human life; in joy it is the natural expression of our happiness—in times of trouble it refreshes the heart with thoughts of other and brighter days. A light heart—a heart that can sing to itself—that is the thing to carry you through life, Maisrie!" And he himself, as he crossed the room to fetch a box of matches, was trolling gaily, with a fine bravura execution— "The boat rocks at the pier o’ Leith, Fu’ loud the wind blows frae the ferry; The ship rides by the Berwick Law, And I maun leave my bonnie Mary." Maisrie was not to be moved; but she appeared down-hearted a little. As time went on the silence in the little street seemed somehow to accuse her; she knew she was responsible. She was playing draughts with her grandfather, in a perfunctory sort of way. She remembered that glance of appeal—she could not forget it—and this had been her answer. Then all of a sudden her hand that hovered over the board trembled, and she had almost dropped the piece that was in her fingers: for there had sprang into the stillness a half-hushed sound—it was an air she knew well enough—she could almost recognise the words— "_Nachtigall, ich hör’ dich singen;_ _S’Herz thut mir im Leibe springen,_ _Komm nur bald und sag mir’s wohl,_ _Wie ich mich verhalten soll._" Her grandfather stopped the game to listen; and when the soft-toned melody had ceased, he said—— "There, now, Maisrie, that is an invitation: you must answer." "No, no, grandfather," she said, almost in distress. "I would rather not—you don’t know—you must find out something about—about whoever it is that plays. I am sure it will be better. Of course it is quite harmless, as you say—oh, yes, quite harmless—but I should like you to get to know first—quite harmless, of course—but I am frightened—about a stranger—not frightened, of course—but—don’t ask me, grandfather!" Well, it was not of much concern to him; and as he was winning all along the line, he willingly returned to the game. It had grown so dark, however, that Maisrie had to go and light the gas—having drawn down the blinds first, as was her invariable habit. When she came back to the table she seemed to breathe more freely; though she was thoughtful and pre-occupied—not with the game. The music on the other side of the way was not resumed that evening, as far as they could hear. Several days passed; and each evening now was silent. Maisrie saw nothing more of the young man; indeed, she studiously refrained from glancing across to the other side of the street—except when she was going out, and wanted to make sure there was no one there. But something was now about to happen that entirely altered this disposition of affairs.