"They'd keep me busy," he growled. "When all's said an' done, it's their nater, an' they can't help it."

Unconscious that he had stated the primordial thesis, he left the foragers alone. Hauling the sail out of the water, he discovered that the stern-board was missing, broken off probably when the mast fell. His trained scrutiny soon solved a puzzle suggested by the state of the cordage. Under ordinary conditions, the upper part of the mast would either have carried the sail clean away with it or be found acting as a sort of sea-anchor at a short distance from the boat.

But it had gone altogether, and the strands of the sail-rope were bitten, not torn, asunder. The shark had striven to pull the boat under by tugging at the wreckage.

Having made the canvas ship-shape, Jim settled the next pressing question by seizing an empty tin and sluicing the fore part. Then he passed a rope under the after thwart and reeved it through a ring-bolt in a rock placed there for mooring purposes in very calm weather like the present.

When the Trinity tender paid her monthly visit to the lighthouse she was moored to a buoy three cables' lengths away to the northwest. If there was the least suspicion of a sea over the reef it was indeed a ticklish task landing or embarking stores and men.

Close-hauled, the boat would fill forward as the tide dropped. This was matterless. By that time all her movable contents—she appeared to have plenty of tinned meat and biscuits aboard but no water—would be removed to the store-room.

The sailor was sorting the packages—wondering what queer story of the deep would be forthcoming when the recent history of the rescued child was ascertained—when Brand hailed him.

"Look out there, Jim. I am lowering an ax."

The weapon was duly delivered.

"What's the ax for, cap'n?" was the natural query.