“Must have hit a rock!” exclaimed Ned.
“Is the boat sinking? If it is let me put a life preserver on my specimen boxes!” begged the professor.
Jerry had instantly shut off the power and was peering over the bow.
“Don’t seem to be any rock,” he murmured. “We have deep water here.”
Then, to the surprise of all on board, the Dartaway began to move through the water at a fast rate.
“Did you turn on the power?” cried Jerry to Ned, who was nearest the engine.
“No! The motor isn’t going!”
“But we are!”
The professor looked over the side of the boat. Then, pointing to something in the water just ahead, he said:
“We are being towed by a giant turtle!”