Three Martian-duped Earth-men swing open the gates of space that for so long had barred the greedy hordes of the Red Planet. "To Mars!" he repeated. "Have you gone crazy Milton-or is this some joke you've put up with Lanier and Nelson here?" Milton shook his head gravely. "It is not a joke Allan. Lanier and I are actually going to flash out over the gulf to the planet Mars to-night. Nelson must stay here and since we wanted three to go I wired you as the most likely of my friends to make the venture." "But good God!" Randall exploded rising. "You Milton as a physicist ought to know better. Space-ships and projectiles and all that are but fictionists' dreams." "We are not going in either space-ship or projectile " said Milton calmly. And then as he saw his friend's bewilderment he rose and led the way to a door at the room's end the other three following him into the room beyond.