"Someone ought to recommend you for the Carnegie Medal, Phil," said Han, with a laugh that didn't disguise his earnestness. Phil shook his head. "I wasn't the hero of the adventure," he replied quietly. "I'm fairly at home in the water and I've done four miles without tiring much. It's 'Brownie' who deserves the medal, fellows. He saw Joe go down and jumped right in and beat it out there; and you all know that 'Brownie' isn't any swimmer. I think he was just about scared to death!" "I'll bet he was," agreed Steve. "He's never been known to go ten yards from shore or boat. Yes, I guess 'Brownie' is the real hero, as you say, Phil." "He certainly is, because I'll tell you frankly that I never could have got Joe in alone. I was just about used up by the time we'd tried to drown each other out there." "We didn't know anything about it," explained Ossie, filling Phil's cup again unasked, "until someone happened to look from the _Follow Me_ and saw you three out there. It was Tom Corwin, I think. I heard him yelling--I was getting my clothes on down here--and I ran up on deck and then grabbed the megaphone and shouted to Steve and Wink and the others who were over on the rock near the inlet. By the time they got it through their thick heads--" "Thick heads be blowed!" exclaimed Steve disgustedly. "You were just yelling a lot of words that didn't mean anything. If you hadn't kept on pointing we'd never have known what was up. We all thought you had a fit." All's well that ends well, however, and an hour after breakfast the incident was, if not forgotten, dismissed. Joe reappeared, looking rather pale still, but announcing himself quite all right. "I was nice and sick at my tummy," he explained, "and now I feel fine." "Being sick at your tummy," remarked Perry unkindly, "is quite the best thing you do, Joe. If you can't be sea-sick you go and try to drown yourself!" Of course "Brownie" was allowed to surmise that he had done something rather big, and Joe thanked him very nicely, but Mr. Carnegie is still in ignorance of his exploit! The two boats floated out of the pool about ten and set off for Bar Harbor. The barely averted tragedy somewhat modified their regret at leaving Titania's Mirror and Mystery Island. Later, Steve and Joe tried to locate that island on the charts but without certain success. There were so many islands thereabouts that neither dared to more than guess at the identity of the one they had visited. Looking back at it from a distance of a half-mile they saw that it was in reality much smaller than they had supposed, being scarcely more than a huge rock pushed up from the ocean bed. Ossie, who had a leaning toward geology, furnished the theory that Mystery Island was no more nor less than the top of an extinct volcano and that Titania's Mirror was the crater.