"I guess he's all right. Danny Grin is a good swimmer, you know."

Half a dozen river craft were now heading their way, but the launch
was the only power boat in sight.

Five members of Dick & Co. now got close together.

"We've got to go down after Danny Grin," Reade declared. "You
fellows watch, and I'll get as close to bottom as I can."

Tom sank. To the anxious boys he seemed to be gone for an age.
He came up alone.

"Did you see Dan?" Dick faltered. "Not a glimpse of him," returned
Tom despairingly.

"See the canoe?"

"No."

"Then you couldn't have gone down in the right place," Dick argued.

"I'll try it, fellows!" exclaimed Darrin. Down went Dave. He
soon came up, treading water. As soon as he had blown out a mouthful
of water he exclaimed:

"I found Dan, but I couldn't stay under long enough. He went
down with the canoe. He's lying in it now."

"Look out, there! We'll pick you up," called a voice from the