Terence, who was thrown in every direction as far as his tether would allow, struggled manfully with the bucket, but could hardly cope with the frequent showers of spray that literally played over the boat from every point of the compass.

The helmsman noticed, with feelings of deepest concern, that the yawl had made considerable headway since entering the zone of broken water, and it would be touch-and-go whether they could avoid being carried on to the lee side of the coral reef.

It was now nearly high tide, and the cruel ridges were covered, although in the trough of the heavier waves the jagged lines of glistening coral showed themselves above the smother of foam.

Andy tried his best to keep the boat's head towards the channel, but in vain. She had lost ground, and was driving straight for the reef. One chance alone remained. He must put the yawl about and endeavour to claw-off the treacherous reef.

Like a top the little craft responded to the shift of the helm. For a few brief seconds the reefed head-sail slatted violently in the howling wind; then, to the accompaniment of another tremendous sea, the yawl staggered on her fresh course.

Andy's idea was to sail round to the lee side of the island and cruise about in the shelter of the reef till the gale moderated; but a few moments sufficed to show him that the spread of canvas—already as much as the vessel could carry—was not sufficient to take her to windward. She was drifting broadside on to the reef.

"Quick, Terry!" he shouted. "Tell them to stand by and make a rush directly you open the cabin door. The yawl's done for. She'll be smashed to splinters in five minutes."

Mr. McKay received the appalling intelligence fairly calmly. He at once proceeded to fasten a lifebelt round Ellerton's practically helpless form, and then did a like service to Quexo. Nor did he forget the prisoner, Blight. But, on sliding back the fo'c'sle hatch, he found the man lying senseless on the floor. Either he had fainted through sheer fright, or he had been stunned by being thrown against one of the lockers, and bound hand and foot, had been unable to help himself.

Blight was no feather-weight, but in spite of the plunging and rolling of the doomed craft, Mr. McKay gripped him with one hand and dragged his senseless body into the cabin. Then, cutting his bonds, he completed his work of mercy by lashing the sole remaining lifebelt round the body of his would-be murderer.

"You've nothing to put on," gasped Ellerton.