"You may regard what I just said as an order if you like," said Captain Turner, trying to look grim, while everybody else, but Jack and the prisoners, smiled.

"You wanted to see me on important business, captain?" asked Mr. Rosenstein, as he entered. "You will keep me as short a time as possible, please. I must get to Scotland Yard, my diamonds——"

"Are right here in this boy's hand," said the captain, pushing Jack forward.

"What! This is the fellow who took them?" thundered the diamond merchant.

"No; this is the lad you have to thank for recovering them for you from those three men yonder," said the captain.

"Professor Dusenberry!" exclaimed the diamond expert, throwing up his hand.

"Or Foxy Fred," grinned one of the English detectives.

"Oh, my head, it goes round," exclaimed Mr. Rosenstein.

"This lad, with wonderful ingenuity, and finally courage, when he leaped overboard to save your property, traced the guilty parties," went on the captain, "and by wireless arranged for their capture."

"It's a bit of work to be proud of," said the head of the English contingent.