'Long, long ago,' continued the fairy, 'down below in one of the most beautiful parts of the ocean world, there lived a race of sea folk. Their lives are much longer, as I daresay you have heard, than those of dwellers in your earth-country, so that the youngest of those I am telling you of counted her age by scores of years, where you count by one, and yet, compared to many of her companions, she seemed still quite a child. Until now, childish things had been enough for her. Day after day brought its own delights; playing about among the sea-caves; swimming races with her brothers and sisters; adorning their home with rare sea-flowers and wonderful shells, to get which they thought nothing of journeying hundreds of miles; these and such-like pastimes were enough for the little sea-maiden. She had even, so far, no wish to rise to the surface and look out beyond the ocean borders; it would frighten her she said, or maybe she would see something sad, and she had no mind to be frightened or saddened, she would say laughingly, as she swam off, on some new game of play, heedless of her elders' reminders that it was time, even for a mermaid, to begin to take life more seriously. But at last a time came, even to this thoughtless little sea-maiden, when she began to think. It was partly the doing of one of the most aged of her race, one to whom all looked for counsel and advice, one who knew much more than even her own people suspected, and whose heart was full of love for all living things.
'"My child," she said one day to Emerald, for such was the name of that little sea-maiden; "my child, does it never strike you that you cannot always be young? A day will come when you will be old like me, and dull and dreary would my life be now if I had no stores of the past to look back upon; if I had learnt nothing but to amuse myself, without thought for the future."
'Emerald looked up at her with a smile.
'"But that time is still far off," she said, "and I am so content with the present. It is all so bright and happy. I want nothing else. When I feel myself beginning to get tired of fun and play, I will come to you kind grand-dame, and you shall teach me some of your knowledge, of the worlds outside ours, and of the beings that live in them."
'"When that day comes," said the ancient sea-lady, "I shall be no longer here, and, after all, knowledge is not the greatest thing. I would fain see your heart enlarged by wider sympathy, my little one; even if some sadness and sorrow come with it," but the last few words she murmured so low that Emerald did not hear them.
'"What are the memories of the past that make you happy to remember now?" said Emerald, suddenly, for something in her old friend's words had touched her, in a way she had never felt before.
'"They are many," was the reply, "some you could not understand; others you might already learn for yourself. I love to think of the services to others I have, in my time, been allowed to render. More than once it has been my happiness to save the lives of dwellers on the land, human beings, as they are called. I have saved them when they were drowning and carried them in safety to their own shores, little as they knew that it was my doing, or that the friendly wave which floated them out of danger was in reality the arm of a mermaid. I have sung sweet songs and lullabies to the suffering and weary in the great ships that pass above us, or even, sometimes, to the fishermen's children in their humble homes on our borders, soothing them into life-giving sleep, though they thought my song was but the gentle wailing of the wind. Such services as these, Emerald, you might soon take your share of; for like all our race you have a lovely voice, and our gift of song should ever be used for good, if our hearts are true, and not to lure human beings to destruction. For after all they are our brothers and sisters."
'Emerald thanked her gently as she swam away, and the words she had heard took root in her merry little heart. Especially did she like the idea of using her beautiful voice to please or benefit others—those strange dwellers on the land, whom she had often heard about, though not till now with any wish to see or know them for herself. They were to be pitied, she had been told, for life was hard upon them; toil and pain and weariness, such as her race knew nought of, seemed to be their common lot. And among the best of her own people she knew, too, that it was accounted a good deed to minister to them. So from that time Emerald began to pay more attention when she heard her friends or companions talking together, as often happened, of their excursions to the upper world and of what they saw there.
'"Some day," she said to one of her older sisters, "some day I should like to go with you when you swim up to the surface, or when you sit among the rocks and caves on the shore, watching the ships pass, and hearing the talk of these human beings in the little boats, which you say they love to sail in when the weather is calm."
'Her companions looked at her in surprise.