"Please describe him," said Bob.
The captain did so. Both Dave and Bob gave a groan.
"He is a fraud!" burst out the young diver.
"And he will wreck the Swallow before we can get back to her," added Bob.
Of course, both Captain Broadbeam and Doctor Barrell were astonished at these remarks.
"I don't understand," said the master of the ship.
As quickly as he could Dave explained the plot which had been hatched out by Lemuel Hankers and which Rackley, his tool, was to carry out.
"It is dastardly!" cried both the captain and the doctor.
"And to think I took him on board, gave him new clothing, and promised him pay until we should get back to the States," added the captain.
"Even now he may be wrecking my beautiful engine!" groaned Bob. "Oh, if only I had the rascal by the neck!"