“Look behind!” commanded Dan, after a minute.

Mildred and Lettie did so. To their amazement both the White Albatross and the Redbird were far astern. At least a mile separated them from the Speedwells’ craft.

“How—how did you do it, Dannie?” asked Mildred, wonderingly.

“Oh! whatever you did, don’t do it again,” gasped Lettie.

“We went fast enough to suit you that time; did we, Let?” chortled Billy.

“I merely took advantage of a flaw in the wind,” declared Dan. “You see, the wind is not steady this afternoon, and really, bye and bye, I expect it will get around into a new quarter and stick there. I was looking for that puff, and Spink wasn’t. He tacked too soon and thought he had beaten us. But now——”

“He won’t catch us in a week of Sundays!” finished Billy, in delight.

The wind became so uncertain, however, within the next few minutes, that Dan decided it was inexpedient to continue farther than Island Number One. There were clouds in the northeast, too, and a storm might be on the way.

Therefore the boat was headed about and the canvas filled again as the steel runners squealed around the head of the island.

“Don’t see our friend the dummy anywhere, Dan!” yelled Billy.