“It certainly was a strenuous experience—being kept prisoners in that cave on the mountainside,” said Jack. “I don’t believe we’ll ever have such a thrilling thing happen again.” But Jack was mistaken. More thrilling days were in store for the four lads, and what these were will be related in another volume, to be entitled “The Rover Boys Winning a Fortune.”

During the week the boys had spent as prisoners a number of letters had come for them, including communications from their mothers and from the girls, and also letters from Gif, Spouter and Phil Franklin.

“Well, the girls are having a good enough time,” said Jack, who was reading a letter from Ruth. “And I’m glad of it.”

“I suppose they’ll be coming home soon, now that the Davenport crowd are rounded up,” returned Fred.

“Here’s good news from Phil Franklin!” burst out Andy. “He’s found the silver trophy. Fished it up out of the lake two days after he sent that last letter.”

“Good enough!” cried his twin. “Now we won’t have that on our minds any more,” and his face showed his satisfaction. “Now if only we could get a new cannon for Colonel Colby, to replace the one that busted, we’ll be all right.” And let me add here that later on Jack’s father did obtain a new piece from the government and it was installed on the Military Academy campus with much ceremony.

And now, while the Rover boys are talking about their friends and discussing the finding of the silver trophy, and their adventures while prisoners on the mountainside, we will say good-by.

THE END

This Isn’t All!