Vol 28, No 4. Contents: 5 • Expansion • [Editorial (Astounding)] • essay by John W. Campbell, Jr. [as by The Editor] 9 • Second Stage Lensmen (Part 2 of 4) • [Lensman • 5] • serial by Edward E. Smith [as by E. E. Smith, Ph.D.] 55 • In Times to Come (Astounding, December 1941) • [In Times to Come (Astounding)] • essay by The Editor 55 • The Analytical Laboratory: October 1941 (Astounding, December 1941) • [The Analytical Laboratory] • essay by The Editor 56 • The Sorcerer's Apprentice • short story by Malcolm Jameson [as by Colin Keith] 66 • Bullard Reflects • [Bullard] • short story by Malcolm Jameson 76 • Sergeant Terry Bull's Terrible Weapons • essay by Willy Ley 86 • Operation Successful • short story by Robert Arthur 102 • Homo Saps • short story by Eric Frank Russell [as by Webster Craig] 112 • Inside Out Matter • essay by R. S. Richardson 115 • Defense Line • novella by Vic Phillips 155 • Brass Tacks (Astounding, December 1941) • [Brass Tacks] • essay by The Editor 157 •  Letters. 【 PREVIOUS ISSUE ← December 1941 → NEXT ISSUE 】