“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.