“Is it likely that my brother officer, finding himself left behind, may have hidden himself there?”

“Not a bit likely,” said Aleck; “but, let’s go and see!”

“By all means,” said the captain; and Aleck led them off at once through the sunken garden and down to the slope which led into the chasm.

“My word, what a place!” said the officer, in his admiration. “Wonderful! And this is your boat-house, eh?” he added, when, followed by his boat’s crew, they reached sea level and gazed into the great niche in which the kittiwake was securely moored.

“Not a bad place,” said Aleck; “and it’s easy enough to get in and out when you know how.”

“One moment,” said the officer; “here are plenty of cracks and crevices in the sides of this rift or cave, or whatever you call it, where a fellow might hide. Here, my lads, give a good loud hail or two! Raven—ahoy!”

The hail rang out, the men shouting together, their powerful voices raising up a broadside of echoes as if the shout ran along zigzag to the mouth of the place before the hail passed out to sea, while at the first roar a multitude of sea-birds flung themselves off the shelf and flew up to the surface and away over the cliffs, shrieking and screaming in hundreds to add to the din.

The men shouted again, and as soon as the echoes had died out sent forth a louder roar than ever; but there was no answering cry, and the lieutenant turned disappointed away.

“He is evidently not here,” he said. “Forward, my lads, back up to the house. We’re on the wrong tack, squire,” he continued, speaking to Aleck. “Look here; I’m going back to our boat in the smugglers’ cove to coast along each way as close in as we can get for the rocks. He may have gone off a rock into deep water during one of the scuffles and then swum to some nook or cavern, out of which he can’t get on account of deep water.”

“That seems likely,” said Aleck. “Like me to come and show you some of the caves?”