"He brought it on himself," maintained Harry. "He wasn't invited aboard. If he'd stayed away, this never would have happened."
"I know," soothed Tom, "and you'll find that most of the troubles we get into are caused by our own acts. I'm sleepy. Move we postpone this third degree business until morning."
"Second the motion," declared Harry. "Let's set a guard over the prisoner and go back to sleep. I'm all in, myself."
The suggestion met with the approval of all the boys. They were tired after their long and strenuous day and needed rest badly.
Arnold, feeling elated because his crab shell had been the means of trapping the midnight visitor, volunteered to act as guard during the first watch. He stoutly maintained that he was not sleepy and would be only too glad of the chance to watch.
The poisoned meat was thrown overboard and quiet reigned again.
Frank awoke and stretched himself. Then he reached across to the bunk occupied by Jack and shook that worthy by the arm.
"Let's get up and visit the hospital," he suggested, springing up.
Arnold sat sleeping on the bunk. The prisoner was gone!