What the fire might have in store for him he did not know; but one thing he did know, and that was John P. Whittington!

Not unimaginably, there might be far worse places than Tarpaulin Island.

The lad's elation at his easily earned freedom vanished. The snap and vim went out of his strokes, and his speed slackened perceptibly. Though he still dragged doggedly at the oars, there was no longer any heart in his pulling.

Westward, almost in line with the beacon on Matinicus Rock, grew a fairy pyramid of twinkling lights—the Portland boat, bound for St. John. Larger, higher, brighter, nearer, until they burned, a sparkling triangle of white and red and green. Soon the steamer crossed his bow not far to the north. He could hear the rush of foam and the throbbing of her screw. Gradually she passed eastward and blended again with the horizon.

Slower and weaker fell Percy's blades, until the pea-pod was barely moving. The ebb, still running against the boat with undiminished strength, almost sufficed to hold her stationary. But, though the lad's muscles were relaxed and listless, a fierce battle was being fought out in his troubled brain.

Should he keep on or should he go back?

Go back? Return to two months more of the uncongenial drudgery from which he had been so glad to escape? Besides, he could hardly hope to drag the pea-pod up on the beach and regain his bunk without attracting the notice of somebody in the cabin. He could imagine the talk of the others when he was out of hearing.

"Started to run away, but got cold feet and sneaked back again. Hadn't the sand to carry it through! We'd better sack him when the four weeks are up."

His futile midnight sally would only result in added humiliation.

But what if he kept on? Already more than an hour had passed. It would not be many minutes now before the tide would turn. The ebb would cease running out, and the flood would set just as strongly the other way, bearing him in toward Isle au Haut. To row with it would be an easy matter.