Astounding Stories, April, 1931

MONSTERS OF MARS by EDMOND HAMILTON Three Martian-Duped Earth-Men Swing Open the Gates of Space That for So Long Had Barred the Greedy Hordes of the Red Planet. (A Complete Novelette.) THE EXILE OF TIME by RAY CUMMINGS From Somewhere Out of Time Come a Swarm of Robots Who Inflict on New York the Awful Vengeance of the Diabolical Cripple Tugh. (Beginning a Four-Part Novel.) HELL'S DIMENSION by TOM CURRY Professor Lambert Deliberately Ventures into a Vibrational Dimension to Join His Fiancée in Its Magnetic Torture-Fields. THE WORLD BEHIND THE MOON by PAUL ERNST Two Intrepid Earth-Men Fight It Out with the Horrific Monsters of Zeud's Frightful Jungles. FOUR MILES WITHIN by ANTHONY GILMORE Far Down into the Earth Goes a Gleaming Metal Sphere Whose Passengers Are Deadly Enemies. (A Complete Novelette.) THE LAKE OF LIGHT by JACK WILLIAMSON In the Frozen Wastes at the Bottom of the World Two Explorers Find a Strange Pool of White Fire—and Have a Strange Adventure. THE GHOST WORLD by SEWELL PEASLEE WRIGHT Commander John Hanson Records Another of His Thrilling Interplanetary Adventures with the Special Patrol Service.