"Good-night, sir," replied Aubyn.

The officer of the night guard closed the door of the cabin on the unprotected light. In the engine-room a bell clanged, the artificer started the engines to half-speed ahead and in ten seconds the launch was lost in the darkness.

Aubyn remained peering out into the night. He could just distinguish the hail of the destroyer next ahead, followed by the reassuring "Guard-boat."

The luckless lookout man stood at attention awaiting the sub.'s pleasure, and trying to forecast the punishment he would receive on the following morning when his offence was entered in the captain's defaulters' list. He uttered silent maledictions on the damp "navy plug" that had distracted his attention for a few critical seconds. In addition he was to go "on leaf" on the following day: his little lapse would assuredly "knock the bottom out of that caboodle."

"Well, what have you to say?" asked the sub.

"Nothin', sir; I was properly caught napping," replied the seaman. He was not going to attempt to bluff his officer by a feeble excuse. He was too much of a man for that: he would "go through the mill" with a good grace.

"You were smoking?"

"Yes, sir. I turned to loo'ard to light my pipe, an' that done it."

"Listen, my man," said Aubyn. "I'll not place you in the captain's report this time. Let this be a warning to you—and be more careful in the future."

The man saluted and returned to his duty. He was agreeably surprised.