"Perhaps it came from the sunken treasure," put in Amos Fearless, who stood near.
"Perhaps."
"Then the treasure must be down here, at the bottom of the ocean," added Dave.
"It's not unlikely," said the doctor. "Although such a fish might swim a long distance with such a coin in his insides."
While the party was talking the matter over, and Doctor Barrell was preparing to place the spiral fish in a safe place, there came a cry from the lookout:
"Sail oh!"
"Where away?" cried Captain Broadbeam.
"Dead ahead, sir."
"Can you make her out?"
"A steamer, sir."