Mary noticed that her father and Mr. Henry Halford were eagerly discussing scientific subjects with Professor Logan as they entered. Even as they stood with a cup of coffee in the hand of each, the subject was being carried on with great earnestness. At last one of Mr. Drummond's nieces approached the piano, at her aunt's request, and struck a few chords. A sudden pause, and then the rich tones of the singer hushed the scientific controversy. Even those who had no natural appreciation of harmonious sounds were attracted to listen; among these ranked Henry Halford. To a singer with less confidence the silence would have been fatal, but Edith Longford was not likely to fail from nervousness, and there is nothing so calculated to steady the nerves of a performer in any subject as a perfect knowledge of what he is about. As the soft melodious tones ceased, Henry Halford contrived to whisper to Miss Armstrong a question, intended to try whether the young girl, whose conversation had so interested him at dinner, could bear the praise of another without jealousy. During the song he had not been able to resist the attraction of her presence. Although really occupied with the subject of dispute as he entered the room, Henry Halford's quick eye discovered at once the whereabouts of Mr. Armstrong's daughter, and he had gradually moved towards the table where she sat. "Miss Longford plays and sings well, Miss Armstrong," were the words that made Mary start from a reverie. "I am quite ignorant of music theoretically, and I have no natural taste for the harmonies; but you can tell me whether my opinion is a correct one." "I, Mr. Halford!" said Mary, recovering herself; "Miss Longford is far beyond me in music. I could not take the liberty of forming a judgment upon her, excepting that I know she sings and plays far better than I do." "Generous and candid," said the young man to himself as a gentleman advanced to lead Mary to the piano. He followed them, and stood listening with surprise to the simple English ballad which Mary sang with real taste and feeling. Henry Halford when alone in his room that night made a decision in his own mind on certain points; in some of these, had he remained firm and unshaken, our story would have ended here. "Mary Armstrong is a very beautiful girl," were his first mental words, "full of intellectual knowledge, far beyond any young lady I have ever met. She is candid, plain-speaking, impervious to flattery, and generous to a rival--at least if Miss Longford is a rival. For my part, I consider Miss Armstrong's music far more pleasing. And then what a talented man her father is! no wonder, with such a teacher, his daughter should be so different from other girls. I have met many girls, but none like Miss Armstrong."