OF L-472 SEWELL PEASLEE WRIGHT 332
_Commander John Hanson of the Special Patrol Service Records Another of
His Thrilling Interplanetary Assignments._

MAROONED UNDER THE SEA PAUL ERNST 346
_Three Men Stick Out a Strange and Desperate Adventure Among the
Incredible Monsters of the Dark Sea Floor._ (A Complete Novelette.)

THE MURDER MACHINE HUGH B. CAVE 377
_Four Lives Lay Helpless Before the Murder Machine, the Uncanny Device by
Which Hypnotic Thought Waves Are Filtered Through Men's Minds to Mold
Them Into Murdering Tools._

THE ATTACK FROM SPACE CAPTAIN S. P. MEEK 390
_From a Far World Came Monstrous Invaders Who Were All the More
Terrifying Because Invisible._

EARTH, THE MARAUDER ARTHUR J. BURKS 408
_Martian Fire-Balls and the Terrific Moon-Cubes Wreak Tremendous
Destruction on Helpless Earth in the Final Death Struggle of the Warring
Worlds._ (Conclusion.)

THE READERS' CORNER ALL OF US 423
_A Meeting Place for Readers of Astounding Stories._

* * * * *

Single Copies, 20 Cents (In Canada, 25 Cents) Yearly Subscription, $2.00

Issued monthly by Publishers' Fiscal Corporation, 80 Lafayette St., New
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Entered as second-class matter December 7, 1929, at the Post Office at
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[Illustration: I saw the famous Science Temple with its constant stream
of worshippers.]

A Problem in Communication

_By Miles J. Breuer, M.D._

PART I

_The Science Community_

(This part is related by Peter Hagstrom, Ph.D.)

"The ability to communicate ideas from one individual to another," said
a professor of sociology to his class, "is the principal distinction
between human beings and their brute forbears. The increase and
refinement of this ability to communicate is an index of the degree of
civilization of a people. The more civilized a people, the more perfect
their ability to communicate, especially under difficulties and in
emergencies."