"'So you thought I was so silly, did you? But I double-locked it, and threw the key out of the window; and perhaps you may spy out in the moonshine you're so fond of admiring,' pointing to an open casement, at an immense height from the ground—for this apartment was at the summit of a turret, commanding an extensive view, chosen for that reason, as well as for its seclusion and repose, being so far distant from the rest of the household.

"Sabina was not afflicted with weak nerves, and as the full danger of her position flashed across her mind, she remembered to have heard that the human eye possesses extraordinary power to quell and keep in abeyance all unruly passions thus terrifically displayed. She was also aware, that in a contest where mere bodily energy was concerned, her powers must prove utterly inadequate and unavailing, when brought into competition with those of the unfortunate lady during a continuance of the paroxysm. Sabina feigned a calmness which she was far from feeling at that trying moment, and though her voice trembled, yet she said cheerfully, and with a careless air—

"'I think your knife will soon be sharp enough, Lady St. Elan; what do you want it for?'

"'What do I want it for?' mimicked the mad woman; 'why what should I want it for, Sabina, but to cut your throat with?'

"'Well, that is an odd fancy,' exclaimed Sabina, endeavoring not to scream or to faint: 'but you had better sit down, for the knife is not sharp enough for that job—there—there's a chair. Now give me your attention while you sharpen, and I'll sit opposite to you; for I have had such an extraordinary dream, and I want you to listen to it.'

"The lady looked maliciously sly, as much as to say, 'You shall not cheat me, if I do listen.' But she sat down, and Sabina opposite to her, who began pouring forth a farrago of nonsense, which she pretended to have dreamt. Lady St. Elan had always been much addicted to perusing works of romantic fiction, and this taste for the marvellous was, probably, the means of saving Sabina's life, who, during that long and awful night, never flagged for one moment, continuing her repetition of marvels in the Arabian Night's style. The maniac sat perfectly still, with the knife in one hand, the slipper in the other, and her large eyes intently fixed on the narrator. Oh, those weary, weary hours! When, at length, repeated signals and knocks were heard at the chamber-door, as the morning sun arose, Sabina had presence of mind not to notice them, as her terrible companion appeared not to do so; but she continued her sing-song, monotonous strain, until the barrier was fairly burst open, and St. Elan himself, who had just returned, alarmed at the portentous murmurs within, and accompanied by several domestics, came to the rescue.

"Had Sabina moved, or screamed for help, or appeared to recognize the aid which was at hand, ere it could have reached her, the knife might have been sheathed in her heart. This knife was a foreign one of quaint workmanship, usually hanging up in St. Elan's dressing-room; and the premeditation evinced in thus secreting it was a mystery not to be solved. Sabina's hair which was black as the raven's wing, when she retired to rest on that fearful night, had changed to the similitude of extreme age when they found her in the morning. Lady St. Elan never recovered this sudden and total overthrow of reason, but died—alas! it was rumored, by her own hand—within two years afterwards. The infant heiress was entrusted to the guidance of her mother's friend and governess; she became an orphan at an early age, and on completing her twenty-first year was uncontrolled mistress of the fortune and estates of her ancestors.

"But long ere that period arrived, a serious question had arisen in Sabina's mind respecting the duty and expediency of informing Mary St. Elan what her true position was, and gently imparting the sad knowledge of that visitation overshadowing the destinies of her race. It was true that in her individual case the catastrophe might be warded off, while, on the other hand, there was lurking, threatening danger; but a high religious principle seemed to demand a sacrifice, or self-immolation, in order to prevent the possibility of a perpetuation of the direful malady.

"Sabina felt assured that were her noble-hearted pupil once to learn the facts, there would be no hesitation on her part in strictly adhering to the prescribed line of right; it was a bitter task for Sabina to undertake, but she did not shrink from performing it when her resolution became matured, and her scruples settled into decision, formed on the solid basis of duty to God and man. Sabina afterwards learnt that the sacrifice demanded of Mary St. Elan was far more heroic than she had contemplated; and when that sweet young creature devoted herself to a life of celibacy, Sabina did not know, that engrossed by 'first love,' of which so much has been said and sung, Mary St. Elan bade adieu to life's hope and happiness.

"With a woman's delicate perception and depth of pity, Sabina gained that knowledge; and with honor unspeakable she silently read the treasured secrets of the gentle heart thus fatally wounded—the evil from which she had sedulously striven to guard her pupil, had not been successfully averted—Mary St. Elan had already given away her guileless heart. But her sorrows were not doomed to last; for soon after that period when the law pronounced her free from control respecting her worldly affairs, the last of the St. Elans passed peacefully away to a better world, bequeathing the mansion house and estate of St. Elan's Wood to Sabina and her heirs. In Sabina's estimation, however, this munificent gift was the 'price of blood:' as but for her instrumentality, the fatal knowledge would not have been imparted; but for her the ancestral woods and pleasant home might have descended to children's children in the St. Elan's line,—tainted, indeed, and doomed; but now the race was extinct.