"There's a bit of a dust-up on board, sir," reported Sub-lieutenant Devereux of Submarine E--, as the British craft steadily overhauled the Kondor, whose engines had already been stopped in response to the peremptory signal. "Fellows scrapping like billy-ho. I can just see their heads at intervals above the taffrail."

"They can scrap as much as they like while they have the chance," remarked Lieutenant-Commander Huxtable grimly. "You know your instructions, Mr. Devereux? Any rumpus, then signal us, and we'll give them our last torpedo."

A canvas collapsible boat had been brought up from below, and in this the boarding-officer and five seamen, all armed, took their places. Both the Kondor and the submarine were almost without way, lying at two cables'-lengths apart, E--'s two quick-firers covering the prize as the boat made for the German vessel.

Devereux was received with well-feigned affability by the soi-disant Swedish skipper, a politeness that the sub thought fit to reciprocate, at least for the present.

But when Devereux had examined the supposed Gefle's papers his manner underwent a change.

"Thanks for letting me see them, Herr Kapitan," he remarked, "but now I must ask you to order your crew below and consider yourself a prisoner of war. I warn you that at any attempt at resistance your ship will be sent to the bottom."

"But----," began the astonished Hun. "I--I do not understand. This Swedish merchant-ship. You mistake make."

"Perhaps," drawled the sub. "If I have, I'll take full responsibility. If you can satisfactorily explain to the British naval authorities why you were surrounded by Hun submarines yesterday, why you supplied them with munitions of war, why you were then His Imperial Majesty's ship Kondor, and why you are now the s.s. Gefle----."

"Donnerwetter!" ejaculated the German skipper furiously, then, before Devereux could interpose, he dashed out of the chart-house and shouted to one of the officers stationed aft.

Almost immediately a muffled explosion was heard, and the Kondor, giving a violent shudder, began to settle by the stern. Rather than surrender, their captain had given orders for a bomb to be exploded in the after hold.