"It was in that direction," said Hiram quickly, pointing.

"I think so, too," nodded Dave, "and not far away."

"What could have happened? Those shots?"

"Probably fired to call assistance."

"If you could speed up the hydroplane a little—"

"I would have to get the starter in use, and we might run into something. Hello! Hello! Hello!" Dave shouted loudly. There was a speedy reply.

"Here! Hello! this wa-aa-ay!"

"That's a man's voice, and he's right near to us," declared Hiram, leaning forward and peering through the mist. "Hey, there!"

"I see you. Good!"

There was a tilt of the machine. The person in the water had seized one of the wing stays.