was as brave a bit of work as I’ve seen done since I’ve been going to sea, Schultz,” he exclaimed. “I’ll see to it that the company gives you recognition. But now let us take this lad to my cabin. He’s opening his eyes and the doctor can give him something that will soon set him on his feet again.”

And so it proved. Half an hour after Jack had been laid on a lounge in the skipper’s cabin and restoratives had been administered by Dr. Flynn, he was feeling almost as hale and hearty as ever, although his terrible ordeal when he was flung back and forth pendulum-wise had left him with a racking headache.

The captain showered congratulations on him, but reminded him that never again must he risk his life in such a perilous way.

“The job could have waited till daylight, anyhow,” he said.

“I beg your pardon, sir,” said Jack, firmly but respectfully, “it could not. You know that I was in communication with a ship—the yacht Endymion—when the insulation wore away and my ‘juice’ began to leak?”

“No, I knew no such thing,” said the captain.

“Mr. Metcalf knew of it, sir.”

“In all the excitement caused by your exploit, young man, he must have forgotten to tell me.”

“That was probably the reason, sir. But the Endymion——” The captain broke in as if struck by some sudden thought.

“Jove, lad, the Endymion, you say?”

“Yes, sir, do you know her?”

“I know of her. She bears no good reputation. Once she was chartered to the Haytian government and was used as a war ship; then she was in the smuggling trade along the coast. The last I heard of her she was laid up in the marine Basin at Ulmer Park. Her history has been one of troubles. Do you feel strong enough to go back to your key?”

“Yes, sir,” exclaimed Jack eagerly. “Young Smalley, my assistant, is too seasick to work to-night. I’ll take the trick right through.”

“Good for you, my boy. I’ll see that you are no sufferer by it. By the way, did the Endymion have any message? Was she in trouble?”

“No, sir, but they wished to give some sort of a radio to a Mr. James Jarrold, one of the first-class passengers.”

The captain tapped his foot musingly on the polished wood floor of his cabin.

“Odd,” he mused, “I wonder what possible communication they could have to make to him. Is Jarrold a heavy-set man with a blue, square jaw and bristly, black hair?”

“Yes, sir, that is the man to the dot.”

“I have noticed him at dinner. He sits at the first officer’s table. Back in my head I’ve got a sort of indefinable idea that I’ve seen him somewhere before, but just where I cannot, for the life of me, call to mind just now.”

“It is too bad that the aërials went out of commission just as that other operator was starting to give the message.”

“It was, indeed, but you must try now to pick up this Endymion again. I’m curious to know more of her and of our mysterious passenger.”

“I’ll report to you the instant I get anything, sir,” Jack assured him, and hurried off.

On the way he passed Schultz and put out his hand with direct, sailor-like bluntness.

“You saved my life to-night, Schultz. I’ll never forget it,” he said simply, but there was a wealth of feeling behind the quiet words.

“Oh, dot makes it no nefer mindt, Yack,” said the old German. “Don’t get excitedt ofer idt. Idt vos just a yob dot hadt to be done und I didded idt.”

“It was a great deal more than that,” said Jack, with warmth. “I hope some day I will get a chance to repay you.”

But Schultz, embarrassed and red as a beet under his tan, had hurried off. Like most sailors, Schultz hated sentiment. To him, his daring deed of saving Jack from his perilous perch in the cross-trees had been all in the line of duty.

Back in the wireless room once more, Jack looked in on Sam. The boy was sitting up in bed staring feverishly out into the wireless room.

“Oh, Jack, I’m glad you have come back!” he exclaimed. “Where have you been?”

“Fixing a little job of work, youngster. Something was wrong with the wireless. How do you feel?”

“Better, but oh, what a head! It’s the worst feeling I ever knew!”

“Like something to eat?”

“For heaven’s sake, don’t mention it! The mere thought makes me feel bad again. But, listen, Jack, I’ve something to tell you. I wakened about half an hour ago and there was a man out there in the wireless room.”

“What?”

Jack had temporarily forgotten all about Jarrold. Now Sam’s remark brought the earlier scene back to him. What had Jarrold been doing in the wireless room while he was absent?