Walter did not laugh. His face, on the contrary, assumed the look of gloom and displeasure which she knew so well.

"If you will come with me," he said to Mrs. Forrester, "I will show you my rooms. Old Macalister is more gracious than usual. You see he has opened the door."

"Oh I will go with great pleasure, Lord Erradeen: for it is long since I have been inside, and I would like to see your rooms. Oh how do you do, Macalister? I hope your wife and you are quite well, and not suffering with rheumatism. We've come to show Mrs. Methven, that is your master's mother, round the place. Yes, I am sure ye will all be very glad to see her. This is Macalister, a very faithful old servant that has been with the Lords Erradeen as long as I can remember. How long is it—near five and forty years? Dear me, it is just wonderful how time runs on. I was then but lately married, and never thought I would ever live like a pelican in the wilderness in my mother's little bit isle. But your mind just is made to your fortune, and I have had many a happy day there. Dear me, it will be very interesting to see the rooms, we that never thought there were any rooms. Where is Oona? Oh, never take the trouble, Lord Erradeen, your mother is waiting: and Oona, that knows every step of the castle, she will soon find her way."

This was how it was that Oona found herself alone. Walter cast behind him an anxious look, but he could not desert the elder ladies, and Oona was glad to be left behind. Her mind had recovered its calm; but she had much to think of, and his presence disturbed her, with that influence of personal contact which interferes with thought. She knew the old castle, if not every step of it, as her mother said, yet enough to make it perfectly safe for her. Old Macalister had gone first to lead the way, to open doors and windows, that the ladies might see everything, and, save for Hamish in his boat on the beach, there was nobody within sight or call. The shadow of the old house shut out the sunshine from the little platform in front of the door; but at the further side, where the trees grew among the broken masses of the ruin, the sun from the west entered freely. She stood for a moment undecided, then turned towards that wild conjunction of the living and the dead, the relics of the past, and the fresh growth of nature, which give so much charm to every ruin. Oona went slowly, full of thought, up to the battlements, and looked out upon the familiar landscape, full of light and freshness, and all the natural sounds of the golden afternoon—the lapping of the water upon the rocks, the rustle of the wind in the trees, the far-off murmurs of life, voices cheerful, yet inarticulate, from the village, distant sounds of horses and wheels on the unseen roads, the bark of a dog, all the easy, honest utterance, unthought of, like simple breathing, of common life. For a moment the voice of her own thoughts was hushed within her, replaced by this soft combination of friendly noises. It pleased her better to stand here with the soft air about her, than amid all the agitation of human influences to accompany the others.

But human influence is more strong than the hold of nature; and by-and-by she turned unconsciously from the landscape to the house, the one dark solid mass of habitable walls, repelling the sunshine, while the tower, with its blunted outline above, and all the fantastic breaches and openings in the ruin, gave full play to every level ray. The loch, all golden with the sunset, the shadows of the trees, the breath and utterance of distant life, gave nothing but refreshment and soothing. But the walls that were the work of men, and that for hundreds of years had gathered sombre memories about them, had an attraction more absorbing. A little beyond where she was standing, was the spot from which Miss Milnathort had fallen. She had heard the story vaguely all her life, and she had heard from Walter the meaning of it, only the other day. Perhaps it was the sound of a little crumbling and precipitation of dust and fragments from the further wall that brought it so suddenly to her memory; but the circumstances in which she herself was, were enough to bring those of the other woman, who had been as herself, before her with all the vividness of reality. As young as herself, and more happy, the promised bride of another Walter, everything before her as before Oona, love and life, the best that Providence can give, more happy than she, nothing to disturb the gladness of her betrothal; and in a moment all over, all ended, and pain and helplessness, and the shadow of death, substituted for her happiness and hope. Oona paused, and thought of that tragedy with a great awe stealing over her, and pity which was so intense in her realisation of a story, in every point save the catastrophe, so like her own, penetrating her very soul. She asked herself which of the two it was who had suffered most—the faithful woman who lived to tell her own story, and to smile with celestial patience through her death in life, or the man who had struggled in vain, who had fallen under the hand of fate, and obeyed the power of outward circumstances, and been vanquished, and departed from the higher meaning of his youth? Oona thought with a swelling and generous throbbing of her heart, of the one—but with a deeper pang of the other; he who had not failed at all so far as any one knew, who had lived and been happy as people say. She leant against the wall, and asked herself if anything should befall her, such as befell Miss Milnathort, whether her Walter would do the same. Would he accept his defeat as the other had done, and throw down his arms and yield? She said no in her heart, but faltered, and remembered Katie. Yet no! That had been before, not after their hearts had met, and he had known what was in hers. No, he might be beaten down to the dust; he might rush out into the world, and plunge into the madness of life, or he might plunge more deeply, more darkly, into the madness of despairing, and die. But he would not yield; he would not throw down his arms and accept the will of the other. Faulty as he was, and stained and prone to evil, this was what he would never do.

And then her thoughts turned to the immediate matter before her—the deliverance of the man whose fate she had pledged herself to share notwithstanding all his imperfections; he who had found means already, since she had bound herself to him, to make her heart bleed; he whom she had loved against her will, against her judgment, before she was aware. He was to be made free from a bondage, a spiritual persecution, a tyrant who threatened him in every action of his life. Oona had known all her life that there was some mysterious oppression under which the house of Erradeen was bound, and there was no scepticism in her mind in respect to a wonder about which every inhabitant of the district had something to say; but from the moment when it became apparent that she too was to belong to this fated house, it had become insupportable and impossible. She felt, but with less agitation and a calmer certainty than that of Walter, that by whatsoever means it must be brought to an end. Had he been able to bear it, she could not have borne it. And he said that she alone could save him—that with her by his side he was safe; strange words, containing a flattery which was not intended, a claim which could not be resisted. He had said it when as yet he scarcely knew her, he had repeated it when he came to her hot from the presence of the other to whom he had appealed in vain. Strange mixture of the sweet and the bitter! She remembered, however, that he had asked her in the simplicity of desperation to give him her hand to help him, a year ago, and this thought banished all the other circumstances from her mind. She had helped him then, knowing nothing—how was she to help him now? Could she but do it by standing forth in his place and meeting his enemy for him! could she but take his burden on her shoulders and carry it for him! He who had suffered so much feared with a deadly terror his oppressor; but Oona did not fear him. On her he had no power. In Walter's mind there was the weakness of previous defeat, the tradition of family subjection; but in her there was no such weakness, either personal or traditionary; and what was the use of her innocence, of her courage, if not to be used in his cause? Could she but stand for him, speak for him, take his place!

"Up and spoke she, Alice Brand,
And made the holy sign;
And if there's blood on Richard's hand,
A stainless hand is mine."

Oona's heart was full of this high thought. It drove away from her mind all shadows, all recollections of a less exalting kind. She moved on quietly, not caring nor thinking where she went, forming within herself visions of this substitution, which is in so many cases a woman's warmest desire.

But then she paused, and there became visible to her a still higher eminence of generous love—a higher giddy eminence, more precarious, more dangerous, by which deliverance was less secure; not substitution—that was impossible. In her inward thoughts she blushed to feel that she had thought of a way of escape which for Walter would have been ignoble. It was for him to bear his own part, not to stand by while another did it for him. A noble shame took possession of her that she could for a moment have conceived another way. But with this came back all the anxious thoughts, the questions, the uncertainty. How was she to help him? how pour all the force of her life into him? how transfer to him every needed quality, and give him the strength of two in one?

In the full current of her thoughts Oona was suddenly brought to a pause. It was by the instinct of self-preservation which made her start back on the very edge of the ruin. The sickening sensation with which she felt the crumbling masonry move beneath her foot, drove everything out of her mind for the moment. With a sudden recoil upon herself, Oona set her back against the edge of the parapet that remained, and endeavoured to command and combat the sudden terror that seized hold upon her. She cast a keen wild look round her to find out if there was any way of safety, and called out for help, and upon Walter! Walter! though she felt it was vain. The wind was against her, and caught her voice, carrying it as if in mockery down the loch, from whence it returned only in a vague and distant echo; and she perceived that the hope of any one hearing and reaching her was futile indeed. Above her, on a range of ruin always considered inaccessible, there seemed to Oona a line of masonry solid enough to give her footing. Necessity cannot wait for precedents. She was young and active, and used to exercise, and her nerves were steadied by the strain of actual danger. She made a spring from her insecure standing, feeling the ruin give way under her foot with the impulse, and with the giddiness of a venture which was almost desperate, flung herself upon the higher level. When she had got there it seemed to her incredible that she could have done it: and what was to be her next step she knew not, for the ledge on which she stood was very narrow, and there was nothing to hold by in case her head or courage should fail. Everything below and around was shapeless ruin, not to be trusted, all honeycombed, with hollow places thinly covered over by remains of fallen roofs and drifted earth and treacherous vegetation. Only in one direction was there any appearance of solidity, and that was above her towards the tower which still stood firmly, the crown of the building, though no one had climbed up to its mysterious heights within the memory of man. Round it was a stone balcony or terrace, which was the spot upon which the mysterious light, so familiar to her, was periodically visible. Oona's heart beat as she saw herself within reach of this spot. She had watched it so often from the safe and peaceful isle, with that thrill of awe, and wonder, and half-terror, which gave an additional pleasure to her own complete and perfect safety. She made a few steps forward, and, putting out her hand with a quiver of all her nerves, took hold upon the cold roughness of the lower ledge. The touch steadied her, yet woke an agitation in her frame, the stir of strong excitement; for death lay below her, and her only refuge was in the very home of mystery, a spot untrodden of men. For the next few minutes she made her way instinctively without thought, holding by every projection which presented itself; but when Oona found herself standing safe within the balustrade, close upon the wall of the tower, and had drawn breath and recovered a little from the exhaustion and strain—when her mind got again the upper hand and disentangled itself from the agitation of the body, the hurry and whirl of all her thoughts were beyond description. She paused as upon the threshold of a new world. What might be about to happen to her? not to perish like the other, which seemed so likely a few minutes ago, yet perhaps as tragic a fate; perhaps the doom of all connected with the Methvens was here awaiting her.