“Yes, sir,” said Mr. Button. “There have been some stirring scenes up around Mackinac Island. To my mind it is one of the most beautiful spots in the United States, and, standing just as it does where the lakes join, I do not wonder that the Indians did not want to give it up and that the French and English fought over it the way they did. There’s a very interesting story of the defense of the old fort. It is published I believe, in a little pamphlet and my advice to you is to get a copy and read it before you go home.”

“We’ll do that,” said Grant enthusiastically.

“When we get back,” laughed George, “Grant’s head is going to be so full of the information that he has picked up about the lakes and Mackinac Island, that the rest of us won’t have to do any work, except to keep him quiet.”

“By the way, Mr. Button,” said Fred, “did you find out anything more about that letter?”

To the surprise of the boys the captain appeared at that moment, glaring angrily at Fred and turning about several times after he had started back to his place at the wheel.

“It was a strange letter,” said Mr. Button, “but I am accustomed to such things. It is a part of my business.”

All four boys looked at him questioningly, but he smiled slightly without satisfying their curiosity at the time.

“As I was saying,” he continued, “there have been some very exciting adventures around Mackinac Island. Perhaps I will tell you something about them before long. Just now I should like to have you tell me about your trip yesterday. Did you have good luck?”

“It depends upon how you look at it,” said John with a laugh. “We caught all the fish we wanted for our luncheon, but we had a terrific thunder storm out there that drove us ashore in the afternoon. At least Fred and I were driven ashore.”

“You were wise lads to run before the gale.”