When he turned out he was ordered to take his trick at the wheel. The schooner had made her offing and was headed for her northward run along the coast, which showed as a thin thread of white along the flashing blue of the sea.

Mayo took the course from the gaunt, sooty Jamaican who stepped away from the wheel; he set his gaze on the compass and had plenty to occupy his hands and his mind, for a big schooner which is logging off six or eight knots in a following sea is somewhat of a proposition for a steersman. Occasionally he was obliged to climb bodily upon the wheel in order to hold the vessel up to her course.

Captain Downs was pacing steadily from rail to rail between the wheel and the house. At each turn he glanced up for a squint at the sails. It was the regular patrol of a schooner captain.

In spite of his absorption in his task, Mayo could not resist taking an occasional swift peep at the passenger. The young man's demeanor had become so peculiar that it attracted attention. He looked worried, ill at ease, smoked his cigarettes nervously, flung over the rail one which he had just lighted, and started for the captain, his mouth open. Then he turned away, shielded a match under the hood of the companionway, and touched off another cigarette. He was plainly wrestling with a problem that distressed him very much.

At last he hurried below. He came up almost immediately. He had the air of a man who had made up his mind to have a disagreeable matter over with.

“Captain Downs,” he blurted, stepping in front of Old Mull and halting that astonished skipper, “will you please step down into the cabin with me for a few moments? I've something to tell you.”

“Well, tell it—tell it here!” barked the captain.

“It's very private, sir!”

“I don't know of any privater place than this quarterdeck, fifteen miles offshore.”

“But the—the man at the wheel!”