The rapids beat and shouted round their little prison-isle, each billow leaping as if possessed by a separate demon. The absurd horror of the situation overwhelmed him. He dared not attempt to carry her ashore, for she might spring from his grasp into the flood. He could not leave her to call for help; and what if nobody came till she lost her mind from terror? Or, what if somebody should come and find them in that ridiculous affliction? Somebody was coming! "Isabel!" he shouted in her ear, "here come those people we saw in the parlor last night." Isabel dashed her veil over her face, clutched Basil's with her icy hand, rose, drew her arm convulsively through his, and walked ashore without a word. In a sheltered nook they sat down, and she quickly "repaired her drooping head and tricked her beams" again. He could see her tearfully smiling through her veil. "My dear," he said, "I don't ask an explanation of your fright, for I don't suppose you could give it. But should you mind telling me why those people were so sovereign against it?" "Why, dearest! Don't you understand? That Mrs. Richard--whoever she is--is so much like me." She looked at him as if she had made the most satisfying statement, and he thought he had better not ask further then, but wait in hope that the meaning would come to him. They walked on in silence till they came to the Biddle Stairs, at the head of which is a notice that persons have been killed by pieces of rock from the precipice overhanging the shore below, and warning people that they descend at their peril. Isabel declined to visit the Cave of the Winds, to which these stairs lead, but was willing to risk the ascent of Terrapin Tower. "Thanks; no," said her husband. "You might find it unsafe to come back the way you went up. We can't count certainly upon the appearance of the lady who is so much like you; and I've no fancy for spending my life on Terrapin Tower." So he found her a seat, and went alone to the top of the audacious little structure standing on the verge of the cataract, between the smooth curve of the Horse-Shoe and the sculptured front of the Central Fall, with the stormy sea of the Rapids behind, and the river, dim seen through the mists, crawling away between its lofty bluffs before. He knew again the awful delight with which so long ago he had watched the changes in the beauty of the Canadian Fall as it hung a mass of translucent green from the brink, and a pearly white seemed to crawl up from the abyss, and penetrate all its substance to the very crest, and then suddenly vanished from it, and perpetually renewed the same effect. The mystery of the rising vapors veiled the gulf into which the cataract swooped; the sun shone, and a rainbow dreamed upon them.