al Cripple Tugh._
(Beginning a Four-Part Novel.)

HELL'S DIMENSION TOM CURRY 51
_Professor Lambert Deliberately Ventures into a Vibrational Dimension
to Join His Fiancee in Its Magnetic Torture-Fields._

THE WORLD BEHIND THE MOON PAUL ERNST 64
_Two Intrepid Earth-Men Fight It Out with the Horrific Monsters of
Zeud's Frightful Jungles._

FOUR MILES WITHIN ANTHONY GILMORE 76
_Far Down into the Earth Goes a Gleaming Metal Sphere Whose Passengers
Are Deadly Enemies._ (A Complete Novelette.)

THE LAKE OF LIGHT JACK WILLIAMSON 100
_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 SEWELL PEASLEE WRIGHT 118
_Commander John Hanson Records Another of His Thrilling Interplanetary
Adventures with the Special Patrol Service._

THE READERS' CORNER ALL OF US 134
_A Meeting Place for Readers of Astounding Stories._

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* * * * *

Monsters of Mars

A COMPLETE NOVELETTE

_By Edmond Hamilton_

[Illustration: _The Martian gestured with a reptilian arm toward the
ladder._]

[Sidenote: Three Martian-duped Earth-men swing open the gates of space
that for so long had barred the greedy hordes of the Red Planet.]

Allan Randall stared at the man before him. "And that's why you sent
for me, Milton?" he finally asked.

The other's face was unsmiling. "That's why I sent for you, Allan," he
said quietly. "To go to Mars with us to-night!"

There was a moment's silence, in which Randall's eyes moved as though
uncomprehendingly from the face of Milton to those of the two men
beside him. The four sat together at the end of a roughly furnished
and electric-lit living-room, and in