Now, surely, there was a note. It belonged on the A string. No, not there. On the E string, perhaps. But no, not there, either.

Look! What is that?

A flash, surely, through the water of a beautiful naked arm.

And there--no, not there--but somewhere from out of the gentle rush of the middle current there seemed to come to him a marvellous mist of drifting sound--ineffably, rapturously sweet!

With a light movement Nils runs his bow over the strings, but not a ghost, not a semblance, can he reproduce of the swift, scurrying flight of that wondrous melody. Again and again he listens breathlessly, and again and again despair overwhelms him.

Should he, then, never see the Nixy, and ask the fulfilment of his three wishes?

Curiously enough, those three wishes which once were so great a part of his life had now almost escaped him. It was the Nixy's strain he had been intent upon, and the wishes had lapsed into oblivion.

And what were they, really, those three wishes, for the sake of which he desired to confront the Nixy?

Well, the first--the first was--what was it, now? Yes, now at length he remembered. The first was wisdom.

Well, the people called him Wise Nils now, so, perhaps, that wish was superfluous. Very likely he had as much wisdom as was good for him. At all events, he had refused to acquire more by going abroad to acquaint himself with the affairs of the great world.

Then the second wish; yes, he could recall that. It was fame. It was odd indeed; that, too, he had refused, and what he possessed of it was as much, or even far more, than he desired. But when he called to mind the third and last of his boyish wishes, a moderate prosperity or a good violin--for that was the alternative--he had to laugh outright, for both the violin and the prosperity were already his.

Nils lapsed into deep thought, as he sat there in the summer night, with the crowns of the trees above him and the brawling rapids swirling about him.

Had not the Nixy bestowed upon him her best gift already in permitting him to hear that exquisite ghost of a melody, that shadowy, impalpable strain, which had haunted him these many years? In pursuing that he had gained the goal of his desires, till other things he had wished for had come to him unawares, as it were, and almost without his knowing it. And now what had he to ask of the Nixy, who had blessed him so abundantly?

The last secret, the wondrous strain, forsooth, that he might imprison it in notes, and din it in the ears of an unappreciative multitude! Perhaps it were better, after all, to persevere forever in the quest, for what would life have left to offer him if the Nixy's strain was finally caught, when all were finally attained, and no divine melody haunted the brain, beyond the powers even of a Stradivarius to lure from its shadowy realm?

Nils walked home that night plunged in deep meditation. He vowed to himself that he would never more try to catch the Nixy's strain. But the next day, when he seized the violin, there it was again, and, strive as he might, he could not forbear trying to catch it.

Wise Nils is many years older now; has a good wife and several children, and is a happy man; but to this day, resolve as he will, he has never been able to abandon the effort to catch the Nixy's strain. Sometimes he thinks he has half caught it, but when he tries to play it, it is always gone.