“Cheer up, the worst is yet to come,” laughed Bert. “Never mind, even the worst trials have to end some time,” he added consolingly and started off again while Tom looked enviously after the red car, now fast disappearing in the distance.

When Bert reached the old camp site, now looking very bare and forlorn, he found Mr. Hollis and the boys waiting impatiently for him. Mr. Hollis and Dick got in, followed by six of the boys. Bert promised to come back for the rest right away and the “Red Scout” started off with its second load. In a little while, for Bert had found a second and much shorter road to the lake, they came once more to “Campers’ Crossing” as the boys had named it. There they found that the wagon had just arrived with its load, but the boys had delayed unloading it until Mr. Hollis should reach the scene of action. In a minute the Camp Master had taken charge and the boys were busy unloading and carrying everything to the camp.

Once more Bert started back with the reliable “Red Scout” for his last load. When he got to the old camp the boys greeted him with the news that Jim Dawson had disappeared and couldn’t be found anywhere.

“He was here just a few minutes ago,” said Steve Thomas. “But when I went to ask him a question just now he was gone. We have hunted high and low but we can’t find a trace of him.”

Bert was troubled at first, but suddenly a thought struck him and his face lighted up as he exclaimed: “I think I can explain the mystery. Follow me, fellows.”

He led them through a dense thicket to the side of a hill, covered with underbrush. Pulling a bush aside, he disclosed to the boys’ astonished gaze, a great, black hole which was evidently the mouth of a cave.

“Come on out, Jim,” Bert called. “We don’t want to keep Mr. Hollis waiting too long, you know.”

Jim Dawson was one of those hungry boys who never can get enough to eat, so, having discovered the cave one day, while chasing a butterfly, he had secretly brought food there in a tin box, so that if he chanced to get hungry, he always had something to eat at hand.

Bert had discovered the cave and its secret long ago but he was not given to tale-bearing and so had kept his own counsel.