It seemed that Haddo knew what she thought, for he smiled strangely.

'Do you know that nothing more destructive can be invented than this blue powder, and I have enough to burn up all the water in Paris? Who dreamt that water might burn like chaff?'

He paused, seeming to forget her presence. He looked thoughtfully at the little silver box.

'But it can be made only in trivial quantities, at enormous expense and with exceeding labour; it is so volatile that you cannot keep it for three days. I have sometimes thought that with a little ingenuity I might make it more stable, I might so modify it that, like radium, it lost no strength as it burned; and then I should possess the greatest secret that has ever been in the mind of man. For there would be no end of it. It would continue to burn while there was a drop of water on the earth, and the whole world would be consumed. But it would be a frightful thing to have in one's hands; for once it were cast upon the waters, the doom of all that existed would be sealed beyond repeal.'

He took a long breath, and his eyes glittered with a devilish ardour. His voice was hoarse with overwhelming emotion.

'Sometimes I am haunted by the wild desire to have seen the great and final scene when the irrevocable flames poured down the river, hurrying along the streams of the earth, searching out the moisture in all growing things, tearing it even from the eternal rocks; when the flames poured down like the rushing of the wind, and all that lived fled from before them till they came to the sea; and the sea itself was consumed in vehement fire.'

Margaret shuddered, but she did not think the man was mad. She had ceased to judge him. He took one more particle of that atrocious powder and put it in the bowl. Again he thrust his hand in his pocket and brought out a handful of some crumbling substance that might have been dried leaves, leaves of different sorts, broken and powdery. There was a trace of moisture in them still, for a low flame sprang up immediately at the bottom of the dish, and a thick vapour filled the room. It had a singular and pungent odour that Margaret did not know. It was difficult to breathe, and she coughed. She wanted to beg Oliver to stop, but could not. He took the bowl in his hands and brought it to her.

'Look,' he commanded.

She bent forward, and at the bottom saw a blue fire, of a peculiar solidity, as though it consisted of molten metal. It was not still, but writhed strangely, like serpents of fire tortured by their own unearthly ardour.

'Breathe very deeply.'

She did as he told her. A sudden trembling came over her, and darkness fell across her eyes. She tried to cry out, but could utter no sound. Her brain reeled. It seemed to her that Haddo bade her cover her face. She gasped for breath, and it was as if the earth spun under her feet. She appeared to travel at an immeasurable speed. She made a slight movement, and Haddo told her not to look round. An immense terror seized her. She did not know whither she was borne, and still they went quickly, quickly; and the hurricane itself would have lagged behind them. At last their motion ceased; and Oliver was holding her arm.

'Don't be afraid,' he said. 'Open your eyes and stand up.'

The night had fallen; but it was not the comfortable night that soothes the troubled minds of mortal men; it was a night that agitated the soul mysteriously so that each nerve in the body tingled. There was a lurid darkness which displayed and yet distorted the objects that surrounded them. No moon shone in the sky, but small stars appeared to dance on the heather, vague night-fires like spirits of the damned. They stood in a vast and troubled waste, with huge stony boulders and leafless trees, rugged and gnarled like tortured souls in pain. It was as if there had been a devastating storm, and the country reposed after the flood of rain and the tempestuous wind and the lightning. All things about them appeared dumbly to suffer, like a man racked by torments who has not the strength even to realize that his agony has ceased. Margaret heard the flight of monstrous birds, and they seemed to whisper strange things on their passage. Oliver took her hand. He led her steadily to a cross-road, and she did not know if they walked amid rocks or tombs.

She heard the sound of a trumpet, and from all parts, strangely appearing where before was nothing, a turbulent assembly surged about her. That vast empty space was suddenly filled by shadowy forms, and they swept along like the waves of the sea, crowding upon one another's heels. And it seemed that all the mighty dead appeared before her; and she saw grim tyrants, and painted courtesans, and Roman emperors in their purple, and sultans of the East. All those fierce evil women of olden time passed by her side, and now it was Mona Lisa and now the subtle daughter of Herodias. And Jezebel looked out upon her from beneath her painted brows, and Cleopatra turned away a wan, lewd face; and she saw the insatiable mouth and the wanton eyes of Messalina, and Fustine was haggard with the eternal fires of lust. She saw cardinals in their scarlet, and warriors in their steel, gay gentlemen in periwigs, and ladies in powder and patch. And on a sudden, like leaves by the wind, all these were driven before the silent throngs of the oppressed; and they were innumerable as the sands of the sea. Their thin faces were earthy with want and cavernous from disease, and their eyes were dull with despair. They passed in their tattered motley, some in the fantastic rags of the beggars of Albrecht Dьrer and some in the grey cerecloths of Le Nain; many wore the blouses and the caps of the rabble in France, and many the dingy, smoke-grimed weeds of English poor. And they surged onward like a riotous crowd in narrow streets flying in terror before the mounted troops. It seemed as though all the world were gathered there in strange confusion.

Then all again was void; and Margaret's gaze was riveted upon a great, ruined tree that stood in that waste place, alone, in ghastly desolation; and though a dead thing, it seemed to suffer a more than human pain. The lightning had torn it asunder, but the wind of centuries had sought in vain to drag up its roots. The tortured branches, bare of any twig, were like a Titan's arms, convulsed with intolerable anguish. And in a moment she grew sick with fear, for a change came into the tree, and the tremulousness of life was in it; the rough bark was changed into brutish flesh and the twisted branches into human arms. It became a monstrous, goat-legged thing, more vast than the creatures of nightmare. She saw the horns and the long beard, the great hairy legs with their hoofs, and the man's rapacious hands. The face was horrible with lust and cruelty, and yet it was divine. It was Pan, playing on his pipes, and the lecherous eyes caressed her with a hideous tenderness. But even while she looked, as the mist of early day, rising, discloses a fair country, the animal part of that ghoulish creature seemed to fall away, and she saw a lovely youth, titanic but sublime, leaning against a massive rock. He was more beautiful than the Adam of Michelangelo who wakes into life at the call of the Almighty; and, like him freshly created, he had the adorable languor of one who feels still in his limbs the soft rain on the loose brown earth. Naked and full of majesty he lay, the outcast son of the morning; and she dared not look upon his face, for she knew it was impossible to bear the undying pain that darkened it with ruthless shadows. Impelled by a great curiosity, she sought to come nearer, but the vast figure seemed strangely to dissolve into a cloud; and immediately she felt herself again surrounded by a hurrying throng. Then came all legendary monsters and foul beasts of a madman's fancy; in the darkness she saw enormous toads, with paws pressed to their flanks, and huge limping scarabs, shelled creatures the like of which she had never seen, and noisome brutes with horny scales and round crabs' eyes, uncouth primeval things, and winged serpents, and creeping animals begotten of the slime. She heard shrill cries and peals of laughter and the terrifying rattle of men at the point of death. Haggard women, dishevelled and lewd, carried wine; and when they spilt it there were stains like the stains of blood. And it seemed to Margaret that a fire burned in her veins, and her soul fled from her body; but a new soul came in its place, and suddenly she knew all that was obscene. She took part in some festival of hideous lust, and the wickedness of the world was patent to her eyes. She saw things so vile that she screamed in terror, and she heard Oliver laugh in derision by her side. It was a scene of indescribable horror, and she put her hands to her eyes so that she might not see.