The eyes of the wonderful thing were turned toward him, and it seemed to chance to see him now for the first time, for there was a sudden movement, no jerk or splash, but a fish-like dart toward the open sea. Then came another turn of the head, as if to make sure that he was indeed the man that he seemed, and then the sea-maid went under the surface, and the ripples that she left behind subsided slowly, expanding and fading, as ripples in calm waters do.
Caius stood up, watching the empty surface of the sea. If some compelling fate had said to him, "There shalt thou stand and gaze," he could not have stood more absolutely still, nor gazed more intently. The spell lasted long: some three or four minutes he stood, watching the place with almost unwinking eyes, like one turned to stone, and within him his mind was searching, searching, to find out, if he might, what thing this could possibly be.
He did not suppose that she would come back. Neddy Morrison had implied that the condition of her appearing was that she should not know that she was seen. It was three years since the old man had seen the same apparition; how much might three years stand for in the life of a mermaid? Then, when such questioning seemed most futile, and the spell that held Caius was loosing its hold, there was a rippling of the calm surface that gave him a wild, half-fearful hope.
As gently as it had disappeared the head rose again, not lying backward now, but, with pretty turn of the white neck, holding itself erect. An instant she was still, and then the perfect arm which he had seen before was again raised in the air, and this time it beckoned to him. Once, twice, thrice he saw the imperative beck of the little hand; then it rested again upon the rippled surface, and the sea-maid waited, as though secure of his obedience.
The man's startled ideas began to right themselves. Was it possible that any woman could be bathing from the island, and have the audacity to ask him to share her sport?
He tarried so long that the nymph, or whatever it might be, came nearer. Some twelve feet or so of the water she swiftly glided through, as it seemed, without twist or turn of her body or effort; then paused; then came forward again, until she had rounded the island at its nearest point, and half-way between it and his shore she stopped, and looked at him steadily with a face that seemed to Caius singularly womanly and sweet. Again she lifted a white hand and beckoned him to come across the space of water that remained.
Caius stood doubtful upon his rock. After a minute he set his feet more firmly upon it, and crossed his arms to indicate that he had no intention of swimming the narrow sea in answer to the beckoning hand. Yet his whole mind was thrown into confusion with the strangeness of it. He thought he heard a woman's laughter come across to him with the lapping waves, and his face flushed with the indignity this offered.
The mermaid left her distance, and by a series of short darts came nearer still, till she stopped again about the width of a broad highroad from the discomforted man. He knew now that it must be truly a mermaid, for no creature but a fish could thus glide along the surface of the water, and certainly the sleek, damp little head that lay so comfortably on the ripple was the head of a laughing child or playful girl. A crown of green seaweed was on the dripping curls; the arms playing idly upon the surface were round, dimpled, and exquisitely white. The dark brownish body he could hardly now see; it was foreshortened to his sight, down slanting deep under the disturbed surface. If it had not been for the indisputable evidence of his senses that this lovely sea thing swam, not with arms or feet, but with some snake-like motion, he might still have tried to persuade himself that some playful girl, strange to the ways of the neighbourhood, was disporting herself at her bath.
It was of no avail that his reason told him that he did not, could not, believe that such a creature as a mermaid could exist. The big dark eyes of the girlish face opened wide and looked at him, the dimpled mouth smiled, and the little white hand came out from the water and beckoned to him again.
He was suffering from no delirium; he had not lost his wits. He stamped his foot to make sure that the rock was beneath him; he turned about on it to rest his eyes from the water sparkles, and to recall all sober, serious thought by gazing at the stable shore. His eye stayed on the epitaph of the lost child. He remembered soberly all that he knew about this dead child, and then a sudden flash of perception seemed to come to him. This sweet water-nymph, on whom for the moment he had turned his back, must be the baby's soul grown to a woman in the water. He turned again, eager not to lose a moment of the maiden's presence, half fearful that she had vanished, but she was there yet, lying still as before.