Vol 23, No 3. Contents: • Those Marvelous Inventions • [Editorial (Astounding)] • essay by John W. Campbell, Jr. [as by The Editor] 9 • Coils of Time • [Sands of Time • 2] • novelette by P. Schuyler Miller 37 • Laboratories Aren't Playful • essay by John W. Campbell, Jr. [as by Arthur McCann] 38 • Fire-Maker • essay by John W. Campbell, Jr. [as by Arthur McCann] 39 • The Day Is Done • short story by Lester del Rey 50 • No Other Race • essay by uncredited 51 • Special Flight • novelette by John Berryman 79 • Employment • short story by L. Sprague de Camp [as by Lyman R. Lyon] 92 • In Times to Come (Astounding, May 1939) • [In Times to Come (Astounding)] • essay by The Editor 92 • The Analytical Laboratory: March 1939 (Astounding, May 1939) • [The Analytical Laboratory] • essay by uncredited 93 • Melody and Moons • [Pvt. Kelton] • short story by Kent Casey 103 • Design for Life (Part 1 of 2) • essay by L. Sprague de Camp 117 • One Against the Legion (Part 2 of 3) • [Legion of Space • 3] • serial by Jack Williamson 152 • Science Discussions and Brass Tacks (Astounding, May 1939) • [Brass Tacks] • essay by The Editor 152 • Letters. 【 PREVIOUS ISSUE ← May 1939 → NEXT ISSUE 】