The wind had risen considerably since Nu set out upon his perilous journey. Already the waves were running high, tipped with white. That the island lay straight before the wind was all that saved the rude craft from instant annihilation. All about him the sea was alive with preying monsters. Titanic duels were in progress upon every hand, as the ferocious reptilia battled over their kills, or, turning from the chase, fell upon one another in frenzied joy of battle while their fortunate quarry swam rapidly away.

Through innumerable dangers swept the little tree-trunk skiff to be deposited at last upon the surf beaten beach of the nearest island. Scarce had Nu landed and dragged his boat above the rollers when he descried another boat a short distance from his own. That this belonged to the man, Tur, he had no doubt, and seizing his ax he hastened to it to pick up and follow the other's spoor wherever it might lead.

Clean cut and distinct in the sand Nu found the impress of Tur's sandals, nor did it require a second glance at them to convince the troglodyte that they had been made by the same feet that had pursued Nat-ul upon the mainland beach.

The trail led around a rocky promontory into a deep and somber gorge. Up the center of this it followed the course of a rapid brook, leaping downward toward the sea. From time to time the man had evidently essayed to scale the cliffs, first upon one side and then upon the other, but each time he had abandoned the attempt before the difficulties and dangers of the precipitous crags.

To Nu the ascent would have proved a simple matter, and so he wondered why the man had turned back each time after clambering but a short distance from the base of the cliffs; but Tur was not a cliff dweller. His peoples had come from a great, level river valley beside the sea—from a country where cliffs and natural caves were the exception rather than the rule, so he had had but little practice in climbing of that sort.

Finally, at the head of the ravine, he had been forced to climb or retrace his steps, and here, at last, he had managed to clamber out upon the table land that stretched beyond the summit. Across this the trail led, turning suddenly toward the west at the edge of another ravine. The abruptness with which the spoor wheeled to the right indicated to Nu that something had suddenly attracted the man's attention toward the new direction and that he had proceeded at a rapid run to investigate. Could he here have discovered the woman he sought? Was he already in pursuit of Nat-ul?—if it 

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