“By simply accepting it and taking good care of it, and also by giving me your promise that you will never part with it while you live,” Mr. Dinsmore gravely replied.

“Of course I would never part with it,” the young girl returned, flushing.  “The mere fact of your giving it to me would make it precious, not to mention that it is a royal mirror and once belonged to that beautiful but ill-fated queen.  How did it happen to come into your possession, Uncle Walter?”

The man grew pale at this question, but after a moment he replied, though with visible effort: 

“It was given to your great grandmother by a Madame Roquemaure, an intimate friend, who was at one time a lady in waiting at the court of Louis the Sixteenth.”

“What was her name?” eagerly asked Mona—­“my grandmother’s, I mean.”

“She was a French lady and her maiden name was Ternaux, and when her friend, Madame Roquemaure, died, she bequeathed to her this mirror, which once graced the dressing-room of Marie Antoinette in the Tuileries.”

“What a prize!” breathed Mona, as she gazed reverently upon the royal relic.  “May I take it, Uncle Walter?”

“Certainly,” and the man lifted it from the box and laid it in her hands.

“How heavy it is!” she exclaimed, flushing and trembling with excitement, as she clasped the precious treasure.

“Yes, the frame is of ebony and quite a massive one,” said Mr. Dinsmore.

“It looks like a shallow box with the mirror for a cover; but of course it isn’t, as there is no way to get into it,” observed the young girl, examining it closely.

Her companion made no reply, but regarded her earnestly, while his face was pale and his lips compressed with an expression of pain.

“And this has been handed down from generation to generation!” Mona went on, musingly.  “Have you had it all these years, Uncle Walter—­ever since you first took me?”

“Yes, and I have been keeping it for you until you should reach your eighteenth birthday.  It is yours now, my Mona, but you must never part with it—­it is to be an heir-loom.  And if you should ever be married, if you should have children, you are to give it to your eldest daughter.  And, oh! my child,” the agitated man continued, as he arose and laid his hands upon her shoulders and looked wistfully into her beautiful face, “I hope, I pray, that your life may be a happy one.”

“Why, Uncle Walter, how solemn you have grown all at once!” cried the young girl, looking up at him with a smile half startled, half gay, “One would think you were giving me some sacred charge that is to affect all my future life, instead of this lovely mirror that has such a charming and romantic history.  I wish,” she went on, thoughtfully, “you would tell me just how you came to have it.  Did it descend to you from your father’s or your mother’s ancestors?”

The man sat down again before he replied, and turned his face slightly away from her gaze as he said: