"About fifty men."
"And the strength of the German submarine base, together with officers and men; also equipment?"
"Don't know," was Jack's reply. "I've only the pirate chief's word that there is a German submarine base. He is using a submarine stolen from the German as his own."
"Maybe he is lying to you," said the Virginia's wireless.
"Don't you believe it," Jack flashed back. "They're on this island all right."
"They won't be long, thanks to you," was the answer. "I'll pick you up later. I'm going to summon help."
The clicking of the wireless ceased. Jack waited impatiently for his call again, and at length it came.
"I've relayed your message to Washington," said the wireless. "I will have a fleet down here before long, but we'll come for you alone if necessary."
"Thanks," said Jack, "I—"
The lad broke off as Frank appeared in the door with a cry.