280 Tommy Twisters Discovery grinding his pet tooth which he nipped with. “Now I'll nip you!” he said, advancing in a determined way. But Billy quickly opened one of the hatches a very little. “What's that steam you have there?” asked Jack Frost. ‘Whew! how hot it’s suddenly got! What on earth’s the matter?” And he flopped down on the ice, and began fanning himself. “We'll melt you if you're not civil,” said both the boys together. ‘‘ Better come to terms!” “Well—ooh!—What do you want me to —oh! for goodness’ sake shut that thing, or I shall faint.” “Why, the fact is we’ve come to have a look round and see what the North Pole’s like,” said Tommy. ‘ And we mean to.” “Hee hee! You'll freeze!” said Jack Frost. “Oh, shall we!” said Billy, pretending to be going to open the hatch again. “Oh, don’t,” cried Jack Frost. ‘I'll be