"In here," he shouted back, and he swam straight to the low opening at the foot of the massive granite cliff, paddled a little at the mouth till the efflux of water was over, and then as the fresh wave came, he took a few strokes, gave a shout, and to the horror of the two girls seemed to be sucked right into the opening. As he disappeared, he gave another shout, a hollow strange echoing "Good-bye," and a few moments after there was a run back of the water and a hollow roar, and it needed very little exercise of the imagination to picture the rugged opening as the mouth of some marine monster into which the young man had passed. CHAPTER THREE. DISCORDS. "Don't be alarmed," said Leslie quietly, "I daresay it is like one of the zorns yonder, only the mouth is too narrow for a boat." "But it is so foolish," said Louise, giving him a grateful look. "Yes, but he swims so easily and well, there is nothing to mind. What are you going to do, Mr Pradelle?" "Work the boat close up so as to help him," said Pradelle shortly. "No, don't do that. We have had one escape from a capsize. We must keep out here in deep water." Pradelle frowned. "I think I know what I'm about, sir," he said sharply; "do you suppose I am going to sit here when my friend may be in danger?" "I have no doubt you know what you are about in London, sir," said Leslie quietly, "but this is not a pavement in the Strand, and it is not safe to take the boat closer in." Pradelle was about to make some retort, but Louise interposed. "Try if you can get nearer the mouth of that dreadful place, Mr Leslie," she said, "I am getting terribly alarmed." Leslie seated himself, took the oars, turned the boat, and backed slowly and cautiously in, holding himself ready to pull out again at the slightest appearance of danger. For the sea rushed against the rocky barrier with tremendous force, while even on this calm day, the swing and wash and eddy amongst the loose rocks was formidable. By skilful management Leslie backed the boat to within some thirty feet of the opening; but the position was so perilous that he had to pull out for a few yards to avoid a couple of rocks, which in the movement of the clear water seemed to be rising toward them from time to time, and coming perilously near. Then he shouted, but there was no answer. He shouted again and again, but there was no reply, and a chill of horror, intensifying from moment to moment, came upon all. "Harry! Harry!" cried Louise, now raising her voice, as Madelaine crept closer to her and clutched her hand. But there was no reply. No sound but the rush and splash and hiss of the waters as they struck the rocks, and came back broken from the attack. "What folly!" muttered Leslie, with his face growing rugged. Then quickly, "I don't think you need feel alarmed; I dare say he has swum in for some distance, and our voices do not reach him. Stop a moment."