“I know that. So we’ll just hang on here and wait for the one chance in a hundred that I’m looking for.”

“And that is——”

“Well, you’ve noticed the logs that have been drifting by since it’s got daylight?”

“Yes.”

“Well, some of them have come quite close to this rock. If the worst comes to the worst——”

“It’s done that already,” interrupted Jack.

“I agree with you. But why couldn’t we grab one and trust to luck to its floating us out of here?”

Jack gave a delighted cry. The water was roaring so loud that it was not necessary to observe caution about noise.

“Tom, old fellow, you are a wonder!” he exclaimed. “Why on earth didn’t I think of that? It’s the very thing if——”

His face grew suddenly sober as he thought how much depended on that “if.”