As the water receded, the finny tribe proper imprisoned in the landlocked bodies became more and more crowded. They struggled in frantic masses, churning up the mud from the bottom so that the liquid in which they swam was thick and black. The smaller ones attacked one another savagely tearing at fin and tail; and the larger devoured their mutilated remains in the mad struggle to prolong life. But there came the day of complete annihilation when there was not water enough left to support the survivors; they slid feebly through the mire, threw themselves clear of it onto the sun-baked mudflats surrounding it, and then died.

The hordes that perished were numberless. And the stench of the decaying masses that dotted the country for hundreds upon hundreds of miles hung over the pantenales like a pall.

Tumwah was indeed angry! His fiery breath had indeed swept the green earth, parching and devastating it. And Warruk, even if the urge to explore and to conquer new fields were not impelling him, fled the scenes of desolation and guided by instinct made for the broad river where food and water must be abundant.

Both by day and by night he travelled, stopping for a short rest only during the early morning hours. Nor was he alone. Others of the larger creatures, terrified, hungry and thirsty were heading in the same direction, and of them he took a heavy toll.

The first sight of green trees fringing the horizon beyond the seemingly endless expanse of brown came as a blessed relief. Upon reaching it, Warruk found it a veritable oasis in the desert. The vanguard of the unusual migration had already reached the spot and it teemed with life.

The forest island covered many acres. There were deep, black pools in the unbroken shade; stealthy deer, tapirs, peccaries, and agoutis moved like shadows among the columnar trunks. A stream led from it into the distance that appeared greener and still more cheerful. Overhead, in the gnarled branches and leafy boughs were scores of snowy birds, egrets that had chosen the place for a nesting site. Some of them squatted on frail stick platforms; others sat motionless on the tips of the branches. Steady streams were coming and going constantly, resembling giant snowflakes that glistened and twinkled as the white wings fanned the air.

Warruk looked at them longingly for, to him a bird was a bird, and he remembered the tender partridges of more bountiful days. However, there were other creatures to supply his fare and for a week he revelled in the abundance.

Then the desire to push further and further into the unknown again came with an overwhelming insistency and he turned his face eastward where the grass was greener and low clouds hung like garlands of red and gold upon the horizon.

The stream of birds from the rookery was flying in the same direction. Soon he discovered its goal—a marsh of considerable extent which was the feeding-ground. Numbers of the long-legged egrets were wading in the shallow water, stopping now and then to dart their long, sharp bills into the throngs of fish dashing about their feet. Others stood motionless on the margin, like statuettes hewn out of purest marble; though seemingly dozing, they were very much on the alert as Warruk discovered when he tried to stalk one of them. He could never approach closer than a dozen good paces before the bird flapped away to the other side of the marsh, so after repeated trials he gave up the attempt and continued his journey.

The country beyond the marsh grew constantly greener and of a more cheerful character and the air of mystery surrounding the unknown deepened as he ventured further from the oasis. But life was not so abundant and the animals living under conditions varying little from the normal were more wary. So, after a few days of wandering and exploration Warruk returned to the spot so densely populated by the creatures that had fled before the drought. They were there still; in fact, many newcomers had been added to their number. As before, they moved noiselessly in the deep shadows and drank of the black water in the silent pools. But something about the place had changed. It differed in some respect from the haven of a few days before. Warruk sensed the change but at first could not discover what it was further than to note an offensive odor that penetrated into even the most hidden recesses. He sniffed the air in all directions; the stench came from overhead.