Vol 39, No 6. Contents: 4 • Indifference - Cosmic Scale • [Editorial (Astounding)] • essay by John W. Campbell, Jr. [as by The Editor] 6 • The End Is Not Yet (Part 1 of 3) • serial by L. Ron Hubbard 55 • Rat Race • short story by George O. Smith 68 • Insomnia, Inc. • novelette by Harry Walton 95 • The Analytical Laboratory: May 1947 (Astounding, August 1947) • [The Analytical Laboratory] • essay by The Editor 96 • The Person from Porlock • short story by Raymond F. Jones 116 • Broad Band • essay by John R. Pierce [as by J. J. Coupling] 133 • Calendar for Mars • essay by R. S. Richardson 138 • In Times to Come (Astounding, August 1947) • [In Times to Come (Astounding)] • essay by The Editor 139 • Propagandist • short story by Murray Leinster 157 • Brass Tacks (Astounding, August 1947) • [Brass Tacks] • essay by The Editor 158 •  Letter (Astounding, August 1947) • essay by Chan Davis. 【 PREVIOUS ISSUE ← August 1947 → NEXT ISSUE 】