The drying-up process was gradual, yet swift. The crocodiles sensed its coming and buried themselves deep in the mud to æstivate until the coming of the rainy season; also the lung-fishes, queer little creatures resembling tadpoles, which could live week after week under the hard crust with only a pinhole in the surface through which to breathe. 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.