Then, as if in pursuance of a definite plan, he analysed with a searching, vehement intensity the curious talent of the modern Frenchman, Gustave Moreau. Margaret had lately visited the Luxembourg, and his pictures were fresh in her memory. She had found in them little save a decorative arrangement marred by faulty drawing; but Oliver Haddo gave them at once a new, esoteric import. Those effects as of a Florentine jewel, the clustered colours, emerald and ruby, the deep blue of sapphires, the atmosphere of scented chambers, the mystic persons who seem ever about secret, religious rites, combined in his cunning phrases to create, as it were, a pattern on her soul of morbid and mysterious intricacy. Those pictures were filled with a strange sense of sin, and the mind that contemplated them was burdened with the decadence of Rome and with the passionate vice of the Renaissance; and it was tortured, too, by all the introspection of this later day.

Margaret listened, rather breathlessly, with the excitement of an explorer before whom is spread the plain of an undiscovered continent. The painters she knew spoke of their art technically, and this imaginative appreciation was new to her. She was horribly fascinated by the personality that imbued these elaborate sentences. Haddo's eyes were fixed upon hers, and she responded to his words like a delicate instrument made for recording the beatings of the heart. She felt an extraordinary languor. At last he stopped. Margaret neither moved nor spoke. She might have been under a spell. It seemed to her that she had no power in her limbs.

'I want to do something for you in return for what you have done for me,' he said.

He stood up and went to the piano.

'Sit in this chair,' he said.

She did not dream of disobeying. He began to play. Margaret was hardly surprised that he played marvellously. Yet it was almost incredible that those fat, large hands should have such a tenderness of touch. His fingers caressed the notes with a peculiar suavity, and he drew out of the piano effects which she had scarcely thought possible. He seemed to put into the notes a troubling, ambiguous passion, and the instrument had the tremulous emotion of a human being. It was strange and terrifying. She was vaguely familiar with the music to which she listened; but there was in it, under his fingers, an exotic savour that made it harmonious with all that he had said that afternoon. His memory was indeed astonishing. He had an infinite tact to know the feeling that occupied Margaret's heart, and what he chose seemed to be exactly that which at the moment she imperatively needed. Then he began to play things she did not know. It was music the like of which she had never heard, barbaric, with a plaintive weirdness that brought to her fancy the moonlit nights of desert places, with palm trees mute in the windless air, and tawny distances. She seemed to know tortuous narrow streets, white houses of silence with strange moon-shadows, and the glow of yellow light within, and the tinkling of uncouth instruments, and the acrid scents of Eastern perfumes. It was like a procession passing through her mind of persons who were not human, yet existed mysteriously, with a life of vampires. Mona Lisa and Saint John the Baptist, Bacchus and the mother of Mary, went with enigmatic motions. But the daughter of Herodias raised her hands as though, engaged for ever in a mystic rite, to invoke outlandish gods. Her face was very pale, and her dark eyes were sleepless; the jewels of her girdle gleamed with sombre fires; and her dress was of colours that have long been lost. The smile, in which was all the sorrow of the world and all its wickedness, beheld the wan head of the Saint, and with a voice that was cold with the coldness of death she murmured the words of the poet:

'I am amorous of thy body, Iokanaan! Thy body is white like the lilies of a field that the mower hath never mowed. Thy body is white like the snows that lie on the mountains of Judea, and come down into the valleys. The roses in the garden of the Queen of Arabia are not so white as thy body. Neither the roses in the garden of the Queen of Arabia, the garden of spices of the Queen of Arabia, nor the feet of the dawn when they light on the leaves, nor the breast of the moon when she lies on the breast of the sea... There is nothing in the world so white as thy body. Suffer me to touch thy body.'

Oliver Haddo ceased to play. Neither of them stirred. At last Margaret sought by an effort to regain her self-control.

'I shall begin to think that you really are a magician,' she said, lightly.

'I could show you strange things if you cared to see them,' he answered, again raising his eyes to hers.

'I don't think you will ever get me to believe in occult philosophy,' she laughed.

'Yet it reigned in Persia with the magi, it endowed India with wonderful traditions, it civilised Greece to the sounds of Orpheus's lyre.'

He stood before Margaret, towering over her in his huge bulk; and there was a singular fascination in his gaze. It seemed that he spoke only to conceal from her that he was putting forth now all the power that was in him.

'It concealed the first principles of science in the calculations of Pythagoras. It established empires by its oracles, and at its voice tyrants grew pale upon their thrones. It governed the minds of some by curiosity, and others it ruled by fear.'

His voice grew very low, and it was so seductive that Margaret's brain reeled. The sound of it was overpowering like too sweet a fragrance.

I tell you that for this art nothing is impossible. It commands the elements, and knows the language of the stars, and directs the planets in their courses. The moon at its bidding falls blood-red from the sky. The dead rise up and form into ominous words the night wind that moans through their skulls. Heaven and Hell are in its province; and all forms, lovely and hideous; and love and hate. With Circe's wand it can change men into beasts of the field, and to them it can give a monstrous humanity. Life and death are in the right hand and in the left of him who knows its secrets. It confers wealth by the transmutation of metals and immortality by its quintessence.'

Margaret could not hear what he said. A gradual lethargy seized her under his baleful glance, and she had not even the strength to wish to free herself. She seemed bound to him already by hidden chains.

'If you have powers, show them,' she whispered, hardly conscious that she spoke.

Suddenly he released the enormous tension with which he held her. Like a man who has exerted all his strength to some end, the victory won, he loosened his muscles, with a faint sigh of exhaustion. Margaret did not speak, but she knew that something horrible was about to happen. Her heart beat like a prisoned bird, with helpless flutterings, but it seemed too late now to draw back. Her words by a mystic influence had settled something beyond possibility of recall.

On the stove was a small bowl of polished brass in which water was kept in order to give a certain moisture to the air. Oliver Haddo put his hand in his pocket and drew out a little silver box. He tapped it, with a smile, as a man taps a snuff-box, and it opened. He took an infinitesimal quantity of a blue powder that it contained and threw it on the water in the brass bowl. Immediately a bright flame sprang up, and Margaret gave a cry of alarm. Oliver looked at her quickly and motioned her to remain still. She saw that the water was on fire. It was burning as brilliantly, as hotly, as if it were common gas; and it burned with the same dry, hoarse roar. Suddenly it was extinguished. She leaned forward and saw that the bowl was empty.

The water had been consumed, as though it were straw, and not a drop remained. She passed her hand absently across her forehead.

'But water cannot burn,' she muttered to herself.