Save for a sudden pallor and a quick uplifting of the eyelids, Alan Arnold betrayed no more emotion as he took the roll of paper which Vassilis handed to him, than he had done when he received his son’s letter from the island. “It does not come to me unexpected,” he said in his firm quiet tones. “Your children and mine, Vassilis, are of the fifth generation, and it was foretold that they should see the sign in the sky. And so the threatened doom is not to pass us by?” “No,” replied Vassilis. “Not unless some miracle happens, and there are no miracles in the astronomy or the mathematics of Mars. The Martians are long past the age of miracles or mistakes. These are the data and the calculations upon which the conclusion is based. I have repeated them back to Mars and received confirmation of them. “I have also verified the times and distances and velocities myself, and have been unable to find the slightest error. As far as I can see, there is not the remotest chance of escape. The human race has only four months, five days, and twenty-three hours to live from midnight to-night.” “It is the will of God!” said the President solemnly, slightly bending his head as he spoke. “It is not for us to question the designs of Eternal Wisdom, save in so far as we may strive to understand them. Death has always been inevitable to all of us, and this will only be dying together instead of alone. Do you wish anything done with these calculations?” “Yes,” said Vassilis. “I would suggest that you appoint a committee of our best mathematicians and astronomers to examine and verify them once more, detail by detail, so that assurance may, if possible, be made surer. I shall receive another message from Mars to-night, and it will be well for the committee to be with me in the observatory. With the public aspect of the question I have, of course, nothing to do, that lies in the hands of yourself and the Council.” “Very well,” said the President, “what you wish shall be done at once, and the Council will meet this morning to consider what public steps are to be taken.” Within half an hour after the conclusion of the momentous interview the Council had met, and the most immediate result of its deliberations on the tremendous tidings that had come from the sister world was the issue of the order for the instant return of all Aerians who were abroad which had been delivered to Alan on the deck of the _Avenger_ on the morning of the 18th. Immediately on receiving his father’s letter, Alan signalled, “Cease firing and follow,” to the _Isma_, and the three Aerian vessels started southward towards Gibraltar, leaving Paris to its fate. At Gibraltar, which was reached in two hours and a half, he found that, in accordance with the orders of the Council, messages had already been sent out to all the stations within the European area of the Federation for all Aerians to rendezvous at the Rock as soon as possible.