Maurice was washing his face in the only little tin basin they owned when he heard an exclamation from his friend--whenever anything out of the usual occurred Thad always began growling and talking to himself as though he had an audience which was waiting to be addressed. "Well, it's gone sure enough, and that's all there is to it. Now, hang it, how could a fox have come aboard our boat with twenty feet of water separating us from the shore? That's a conundrum I give up," Thad was saying to himself. "Hey what all this row about--who's been aboard during the night, and what do you miss, Mr. Cook? You remember we ate those two ducks last night; did you expect they would turn up again this morning to be devoured over again?" laughed the Captain, still dashing the cold water in his face, and finally snatching up the coarse huck towel to rub his skin dry. "That's all right, but it's the other chap I'm after now--perhaps you'll be so obliging as to tell me where I can put my paws on him. I hung the duck from this nail--the cord was good and strong, and it couldn't have broken loose. You see it ain't there now. So the question is did the blamed bird come to life again and skedaddle off, or was one of your friends the foxes aboard while we snoozed, to make way with my fat duck? Anyhow, it's gone, dead sure, and that's no lie." "I see it is. Certain, are you, that it hung there when we went to bed?" "One of the last things I did was to slip around here and nip it to make sure it was as tender as those jolly birds we had for supper. There wasn't any wind to whip it around and twist the cord till it broke. Yet where is it now?" and he shook his head dolefully, looked at his friend as if confident Maurice could in some way explain the mystery. Maurice went at things in a far different way from his chum; instead of calling it an unfathomable mystery he stepped forward and took hold of the piece of cord that still hung from the nail. Thad saw him closely examine it. "Could a fox swim aboard and climb on top of the cabin to reach over and down to where that duck was hanging, and cut the cord with his sharp teeth, and then sling the bird over his shoulder to swim back again to--" he began. "Stop!" exclaimed Maurice. "You're on the wrong track. It wasn't a fox!" "'Coon, 'possum, wildcat, whatever could it have been?" "A two-legged thief," announced Maurice, quietly. "Shucks! you don't say so? How'd he ever get here, and if he wanted to steal why didn't he run off with something more valuable than a poor little teal?"