"I do not know the countersign, my man. But I am the commander of this ship."

"Officer of the deck, sir," called the sentry.

The officer of the deck hastened to the spot.

"Sir, stranger without the countersign."

"Man, what do you mean? This is the captain of this ship whom you have halted. What do you mean?"

"Orders, sir, to let no one pass unless he has the countersign."

"Who is responsible for this?" demanded the captain in a half amused tone.

"I let young Davis take charge of the extra-duty squad, and he formed the men into a guard. They had been patroling the deck for the last hour. I did not interfere, not having any idea the affair would be carried this far, sir. I'm sorry, sir. Man, lower your gun."

"Wait, wait!" exclaimed the captain, raising a restraining hand. "This man has his orders. He is quite right. It is a most excellent idea. Fine training for these young men. What is the countersign, Carter?"

"I—I don't know, sir."