Then, after a last survey of the late camp had been taken by cautious Jack, in order to make sure that nothing was forgotten and the fire dead, he too stepped into his little dinky, paddled out to where Jimmie awaited him aboard the Tramp; and five minutes later the little flotilla started, amid a tremendous popping of motors, and much calling back and forth on the part of skippers and crews.

Once outside the protecting cape they headed due nor’-east by north, and kept just a certain distance away from the shore.

It was a lovely morning, and gave promise of a fine day; but these cruisers had learned through bitter experience never to wholly trust such signs. In summer at any rate, storms can develop with suddenness on the big lakes, and a squall start to blowing without warning. Hence they had adopted as a motto, the slogan of the Boy Scouts: “Be Prepared!”

George called out to the skipper of the Tramp, and pointed ahead, where, several miles to the north could be seen the dim shape of the big power boat, rapidly covering the distance that intervened between the cove and charming Mackinac Island.

“They’ll be at Mackinac tonight, all right, Jack!” shouted George, who led the little procession in his speed boat.

Jack made no attempt at a reply; but Jimmie took up the cudgels at once.

“Sure we’ll make it by tomorry night, if all goes well,” he said; “and begorra, not wan of our boats is in the same class wid the big wan. Take the three togither and they’d be only a bite for the Mermaid. So we bate thim aisy now.”

So they chugged along as time passed. In an hour all signs of the larger craft had passed from their sight. At noon they opened up Thunder Bay; and thinking to make the dangerous crossing of its broad mouth before having lunch, they kept on.

It was rather rough traveling, especially for the narrow Wireless; and acting upon Jack’s suggestion George hovered close to the others, so as to have help in case of trouble, and be partly sheltered from the rollers by keeping in their lee.

But the passage was made in safety; and after that their course changed to some extent. The shore turned more toward the northwest, so that they headed into the wind, which was creating some sea, in which the small craft wallowed considerably.