In this manner an hour went by, and it was Terry who called his attention to the fact that Don had been gone a long time. Jim put the book down and looked toward the shore.

“That’s so, he has,” he replied. “He should be back by now. From the looks of things, that house isn’t ten minutes’ walk from the shore.”

They waited around for another hour, and at the end of that time they were really worried. Jim was for going ashore at once, but Terry proved to have better sense.

“I wouldn’t do it,” he urged. “It may be that someone has captured Don and is just waiting to have one of us walk right into their trap. But if Don doesn’t come back by nightfall we’ll have to do something, that’s sure.”

“If Don doesn’t show up by nightfall we’ll swim ashore and hunt him up ourselves,” Jim decided.

“Sure. It isn’t a pleasant outlook in any way, because, beside having to swim ashore, we’ll be forced to find our way around that island in the dark. What in the world do you suppose could have happened to him?”

“I haven’t any idea, but I keep thinking of that man with the lantern. There isn’t any doubt that something has happened to him, or he would at least let us know somehow that he was all right. I hate to sit here and wait.”

Waiting, Jim found, was the hardest part of all. They spent a miserable afternoon just sitting there, eagerly watching the dinghy on the shore. But no one came to move it and it lay there on its side. Both of the boys had the sensation of being watched.

“I just feel it,” Jim said, as they discussed it. “I’ll bet you someone is hiding there in that dense undergrowth, just watching us. After all, I think it would be useless to go ashore at this point. As soon as it gets dark we’ll pull up anchor, drop down the shore a way, and I’ll go ashore.”

“I’m going with you,” declared Terry, promptly.