Vol 29, No 2. Contents: 6 • Too Good at Guessing • [Editorial (Astounding)] • essay by John W. Campbell, Jr. [as by The Editor] 9 • Beyond This Horizon (Part 1 of 2) • serial by Robert A. Heinlein [as by Anson MacDonald] 50 • Busbars and Shortages • essay by uncredited 51 • "If You're Smart—" • short story by Malcolm Jameson [as by Colin Keith] 57 • The Analytical Laboratory: February 1942 (Astounding, April 1942) • [The Analytical Laboratory] • essay by The Editor 58 • Silence Is—Deadly • novelette by Bertrand L. Shurtleff 72 • Strain • short story by L. Ron Hubbard 78 • Co-Operate - Or Else! • [Rull] • novelette by A. E. van Vogt 93 • The Eagles Gather • short story by Joseph E. Kelleam 98 • The Fatal Coloration • essay by Willy Ley 107 • Brass Tacks (Astounding, April 1942) • [Brass Tacks] • essay by The Editor 111 • Some Curious Effects of Time Travel • [Probability Zero] • short story by L. Sprague de Camp 111 • Probability Zero! (Astounding, April 1942) • essay by Isaac Asimov and L. Sprague de Camp and Malcolm Jameson [as by George E. Dale and L. Sprague de Camp and Malcolm Jameson] 112 • Pig Trap • [Probability Zero] • short story by Malcolm Jameson 113 • Time Pussy • [Probability Zero] • short story by Isaac Asimov [as by George E. Dale] 114 • In Times to Come (Astounding, April 1942) • [In Times to Come (Astounding)] • essay by The Editor 116 • Monopoly • novelette by Vic Phillips and Scott Roberts. 【 PREVIOUS ISSUE ← April 1942 → NEXT ISSUE 】