"Thank you, sir," replied Atherton. "We will be very pleased to visit your station. We went to the lighthouse yesterday, and fully intended to ask whether we might visit the coastguard at Refuge Point some time next week."

"And by the by," said the coastguard officer at parting, "I suppose you know that any cargo or gear that comes ashore is to be handed over to the custody of the Receiver of Wrecks? I was going to leave a couple of hands to keep a look-out, but I guess you're quite capable and willing to do that part of the business. If you should see anyone tampering with the wreck after the gale moderates, just signal to us, and we'll stop their little game."

"Very good, sir," replied Atherton then, as the weird noises that had so puzzled the Scouts during their all-night vigil commenced again, he asked, "What is that sound, sir?"

"A bit of a startler when you're not used to it, eh? That is the noise made by the blowing-holes on the south-west side of the Island. In rough weather, and at certain states of the tide, the waves force confined air through several small fissures in the hollows of the rocks. It's well worth seeing."

The various boats returned to the mainland with the rescued men, Everest and Baker having been given a passage in Peter Varco's craft, and once more Seal Island was untenanted save by the Scouts, the rabbits, and the countless seabirds.

"Thank goodness we've a chance to have a good sleep," ejaculated Simpson, with a sigh of utter weariness. "All the same I should like to know how came Paul Tassh on Seal Island."

CHAPTER XII

THE BURGLARY

"Green," said Atherton, "I hope you are not so dead tired as I am: will you do me a good turn?"