Baker stood upon the end of the stone pier so that his dark green shirt showed up plainly against the white-washed wall behind him.

"Coventry has fallen down a hole. Concussion. Still unconscious. Fetch doctor," read Atherton.

"Hurry up and bring the doctor along with you, Everest," said Mr Buckley. "Green and Baker will remain here with one of the boats. How many have you?"

"Two, sir," replied the Leader. "One is on the Island side."

"Signal to those fellows to bring that boat over, then," continued the Scoutmaster. "We can then get across and see what's wrong."

While Everest was on his way to Dr Carraway—for the Scouts had made it a point of finding out where the doctor lived almost as soon as they arrived at Polkerwyck—the Scoutmaster and the four "Otters" crossed to the Island. During the passage Hayes and Armstrong told their comrades what had occurred, and how Phillips had discovered the butler's hiding-place.

"Hiding-place," repeated Atherton. "Most likely a tunnel communicating with Polkerwyck House. Didn't Sir Silas say that the House used to be an old monastic building, and that it was partially rebuilt on the existing foundations? What puzzles me, though, is why Tassh did not return by the tunnel on the night of the wreck, since he evidently came to the Island by that way."

"You've a fine site for a camp here, lads," remarked Mr Buckley, as the two patrols met. "It is unfortunate, though, that your holiday should be marred by this accident."

The Scoutmaster knelt by the unconscious Scout.

"Yes, he's had a nasty blow," he said, observing Coventry's skin was pale and cold, his pulse feeble, and his breathing slow and punctuated by distressing sighs. "Raise his head a little more; we ought to place him in a darkened room as soon as possible. In any case, one of you stand so that the shadow falls across his face."