Nu followed the dainty imprints of Nat-ul's swiftly flying little feet for a hundred paces beyond the end of the man's pursuit—and came to a dead, bewildered halt. The footprints ended abruptly upon the beach midway between the ocean and the jungle. About them was only an expanse of unbroken sand. They simply ceased, that was all. They did not double back upon themselves. They did not enter the ocean. They did not approach the jungle. They stopped as though Nat-ul had suddenly been swallowed by a great hole in the beach. But there was no hole. Nu halted and looked about in every direction. There was no trace of any living thing about. Where had Nat-ul gone? What had become of her? Had the footprints of the man who pursued her reached the point upon the sand where hers ended, Nu would have concluded that he had picked her up and carried her back to his village; but the man had been a hundred paces behind Nat-ul when her trail ceased, nor had he approached closer to the spot at any time. And when he had returned to his village he had done so at a rapid run, and the lightness of his spoor indicated that he had not been burdened with a heavy load.

For some time Nu stood in bewildered thought, but at last he turned back toward the village of the Boat Builders. Nu knew little of the super-natural, and so he turned first to the nearest material and natural cause of Nat-ul's disappearance that he could conceive—the man who had pursued her. And that man had returned to the village of the strangers who were diligently burning and scooping the hearts out of felled trees.

Nu returned to the vantage of the bush before the village. Here he lay down again to watch—he was positive that in some way these people were responsible for the disappearance of Nat-ul. They knew where she was, and, judging by his own estimate of the girl, he knew that the man who had seen her and pursued her would not lightly relinquish his attempts to obtain her. Nu had seen the women of the strangers—beside his Nat-ul they looked like the shes of the ape-folk. No, the man would seek to follow and capture the radiant stranger. Nu wished that he could guess which of the men it was who had chased Nat-ul. Something told him that it was the young giant who worked with such feverish haste, so Nu watched him most closely.

At last Tur's boat was completed. The centers of the trees the Boat Builders selected for their craft is soft, and easily burned and scooped. The fires kindled in the hollowed trunk served a double purpose—they ate away the harder portions nearer the outside and at the same time tended to harden what remained. The result was a fairly light and staunch dug-out.

When Tur's boat was finished he called to several of the other workers. These came, and, lending a hand with Tur, dragged the hollowed log down to the water. One of the women came with a long stick, larger at one end than the other, and with the large end flattened upon both sides. It was a paddle. Tur tossed this into the boat and then running through the surf he launched his primitive craft upon the crest of a receding roller, leaped in, and seizing the paddle struck out vigorously against the next incoming wave.

Nu watched him with wide eyes. His estimate of the man rose in leaps and bounds. Here was sport! And Nu did not have to attempt the feat he had witnessed to know that it required skill and courage. Only a brave man would venture the perils of the awful waters. Where was he going? Nu saw that he paddled straight out into the sea. In the distance were the islands. Could he be going to these? Nu, from childhood, had always longed to explore those distant lands of mystery. These people had found a way. Nu had learned something—an aeroplane could not have presented greater wonders to him than did this crude dug-out.

For a while he watched the man in the little boat. They grew smaller and smaller as wind, tide and the sturdy strokes of the paddler carried the hollowed log farther out to sea. Then Nu turned his attention once more to the other workers. He saw that they, too, were rapidly completing their boats. They were talking back and forth among themselves, raising their voices, as they were scattered over a considerable distance about the village. Nu caught a word now and then. The language was similar to his own. He discovered that they were talking about the man who had just departed, and about his venture. Nu wanted to hear more. He crept cautiously through the dense vegetation to the little clearing the strangers had made about their shelters. As he peered through the curtain of tangled creepers that hid him from their view, he saw the camp more closely. He saw the ring of ashes that surrounded it—the remains of the nocturnal fires that kept off the beasts of prey by night. He saw the cooking fire before each rude shelter. He saw pots of clay—something new to him. He saw the women and the children and the men. They did not differ greatly from his own people, though their garments and weapons were dissimilar. And now he could hear all their conversation.

"She must be beautiful," a man was saying, "or Tur would not venture across this strange water to those unknown lands in search of her," and he grinned broadly, casting a knowing glance at a young woman who suckled a babe, as she sat scraping, scraping, scraping with a bit of sharpened flint upon the hide of an aurochs, pegged out upon the ground before her.

The young woman looked up with an ugly scowl.

"Let him bring her back," she cried, "and she will no longer be beautiful. This will I do to her face," and she fell to scraping viciously upon the skin.