258 Tommy Twister’s Discovery quietly into the stream, and jumped aboard ; but when the ark had fairly started down the stream he burst into tears at the thought of the home he had left behind, and his mother, and two apples which he had forgotten to bring. He had a great secret—a plan for keeping warm at the North Pole—which he had not said a word about to anybody, even his father : for he knew how things w2// leak out; and he was afraid of Doctor Nansen or some one finding out his secret and making use of it. As the ark turned a bend in the stream whom should Tommy see on the bank but Billy Bunson, a school chum of his. It hap- pened that Billy had got up early too, to fish. ‘Hullo, Tommy Twister!” called Billy. “Where are you off to?” Tommy felt angry at first at being found out; but it then occurred to him that Billy was a good sort, and that it might be lonely for one at the North Pole; so he stopped the ark and said— “Vm going to find the North Pole. Come on!”