He had long ere this discovered who the angel was that had appeared to him at the top of the stair upon that memorable night; but he could hardly yet say that he had seen her; for, except one dim glimpse he had had of her at the window as he passed in the street, she had not appeared to him save in the vision of that night. During the whole winter she scarcely left the house, partly from the state of her health, affected by the sudden change to a northern climate, partly from the attention required by her aunt, to aid in nursing whom she had left the warmer south. Indeed, it was only to return the visits of a few of Mrs. Forsyth's chosen, that she had crossed the threshold at all; and those visits were paid at a time when all such half-grown inhabitants as Robert were gathered under the leathery wing of Mr. Innes. But long before the winter was over, Rothieden had discovered that the stranger, the English lady, Mary St. John, outlandish, almost heathenish as her lovely name sounded in its ears, had a power as altogether strange and new as her name. For she was not only an admirable performer on the pianoforte, but such a simple enthusiast in music, that the man must have had no music or little heart in him in whom her playing did not move all that there was of the deepest. Occasionally there would be quite a small crowd gathered at night by the window of Mrs. Forsyth's drawing-room, which was on the ground-floor, listening to music such as had never before been heard in Rothieden. More than once, when Robert had not found Sandy Elshender at home on the lesson-night, and had gone to seek him, he had discovered him lying in wait, like a fowler, to catch the sweet sounds that flew from the opened cage of her instrument. He leaned against the wall with his ear laid over the edge, and as near the window as he dared to put it, his rough face, gnarled and blotched, and hirsute with the stubble of neglected beard--his whole ursine face transfigured by the passage of the sweet sounds through his chaotic brain, which they swept like the wind of God, when of old it moved on the face of the waters that clothed the void and formless world. 'Haud yer tongue!' he would say in a hoarse whisper, when Robert sought to attract his attention; 'haud yer tongue, man, and hearken. Gin yon bonny leddy 'at yer grannie keeps lockit up i' the aumry war to tak to the piano, that's jist hoo she wad play. Lord, man! pit yer sowl i' yer lugs, an' hearken.'