"Whew! Tom must have met someone he knows on the bottom," called
Harry, as Greg's head rose above the surface.

Dave came up next, then Dick, and then Dan.

"Tom ought to be a fish!" uttered Darrin admiringly. "I stayed
under water as long as I could."

Yet after going a few yards further up stream Dick Prescott turned,
gazing anxiously down stream.

"Fellows," he suggested, "something must have happened to old Tom."

"Or else he's playing a joke on us," hinted Danny Grin, suspiciously.

"It's some joke to remain under water four times as long as the
average swimmer can do it," retorted Prescott.

"But Tom may not be under water," spoke up Greg.

"He didn't have time to get anywhere else," Dave declared.

"It may be a joke, but I don't want to take any chances," Dick
said earnestly. "Let's go down stream. Spread out, and every
now and then bob under and take as near a look at the bottom as
you can."

"It doesn't look right," Dave admitted as they all started back.