Let me out of here!" "Too late!" observed the Captain quietly. "The trap-hole alone would take ten or fifteen minutes to open." "Oh then I suppose I must make the best of it," said Ardan, laughing. "All aboard, gentlemen! The train starts in twenty minutes!" "In nineteen minutes and eighteen seconds," said the Captain, who never took his eye off the chronometer. The three travellers looked at each other for a little while, during which even Ardan appeared to become serious. After another careful glance at the several objects lying around them, Barbican said, quietly: "Everything is in its place, except ourselves. What we have now to do is to decide on the position we must take in order to neutralize the shock as much as possible. We must be particularly careful to guard against a rush of blood to the head." "Correct!" said the Captain. "Suppose we stood on our heads, like the circus tumblers!" cried Ardan, ready to suit the action to the word. "Better than that," said Barbican; "we can lie on our side. Keep clearly in mind, dear friends, that at the instant of departure it makes very little difference to us whether we are inside the bullet or in front of it. There is, no doubt, some difference," he added, seeing the great eyes made by his friends, "but it is exceedingly little." "Thank heaven for the some!" interrupted Ardan, fervently. "Don't you approve of my suggestion, Captain?" asked Barbican. "Certainly," was the hasty reply. "That is to say, absolutely. Seventeen minutes twenty-seven seconds!" "Mac isn't a human being at all!" cried Ardan, admiringly. "He is a repeating chronometer, horizontal escapement, London-made lever, capped, jewelled,—" His companions let him run on while they busied themselves in making their last arrangements, with the greatest coolness and most systematic method. In fact, I don't think of anything just now to compare them to except a couple of old travellers who, having to pass the night in the train, are trying to make themselves as comfortable as possible for their long journey. In your profound astonishment, you may naturally ask me of what strange material can the hearts of these Americans be made, who