"The flood! the flood!" replied Thalcave, spurring his horse towards the north.
"The inundation!" cried Paganel; and his companions, with him at their head, fled away in the track of Thaouka.
It was time. Five miles to the south a high and broad wall of water was rushing over the plain, which was fast becoming an ocean. The tall grass disappeared as before the scythe, and the tufts of mimosas, torn up by the current, separated and formed floating islands. The mass of waters spread itself in broad waves of irresistible power. The dikes of the great rivers had evidently given way, and perhaps the waters of the Colorado and Rio Negro were now mingling in a common stream.
The wall of water descried by Thalcave advanced with the speed of a race-horse. The travelers fled before it like a cloud driven by the storm. Their eyes sought in vain a place of refuge. Sky and water mingled together on the horizon. The horses, excited by the danger, dashed along in a mad gallop, so that their riders could scarcely keep their seats. Glenarvan frequently glanced behind him.
"The water is overtaking us," he thought.
"Quick! quick!" cried Thalcave.
THE ARK.
The unfortunate beasts were urged to a swifter pace. From their flanks, lacerated with the spur, flowed bright red streams, which marked their course on the water by long, crimson lines. They stumbled in the hollows of the ground; they were entangled in the hidden grass; they fell and rose again continually. The depth of the water sensibly increased. Long surges announced the on-rush of the mass of water that tossed its foaming crests less than two miles distant.
For a quarter of an hour this final struggle against the most terrible of elements was prolonged. The fugitives could keep no account of the distance they had traversed; but, judging by the rapidity of their flight, it must have been considerable.
Meantime the horses, immersed to their breasts, could no longer advance without extreme difficulty. Glenarvan, Paganel, Austin, all believed themselves lost, victims of the horrible death of unfortunates abandoned at sea. Their animals began to lose their footing; six feet of water was sufficient to drown them.