5 • The One-Way Pendulum • [Editorial (Analog)] • essay by Stanley Schmidt10 • The Trelph is a Solitary Creature • novelette by Thomas R. Dulski50 • Base Eight Arithmetic, Meteors and Man • [Science Fact (Analog)] • essay by John Gribbin58 • In Times to Come (Analog, December 1981) • [In Times to Come (Analog)] • essay by uncredited59 • Biolog: John Gribbin • [Biolog] • essay by Jay Kay Klein60 • Karnev's World • novelette by David Lewis81 • The Halley Dilemma • [The Alternate View] • essay by Jerry Pournelle85 • AnaLog: A Calendar of Upcoming Events (Analog, December 1981) • [Upcoming Events] • essay by uncredited86 • The Announcement • shortstory by Henry Melton93 • The Reference Library (Analog, December 1981) • [The Reference Library] • essay by Thomas A. Easton [as by Tom Easton ]100 • Joe Haynes and the Zeitgeist • shortstory by Ray Brown112 • There is a Home • shortstory by Al Sarrantonio124 • Dragonstar (Part 4 of 4) • [Dragonstar • 1] • serial by David Bischoff and Thomas F. Monteleone168 • Brass Tacks (Analog, December 1981) • [Brass Tacks] • essay by uncredited171 • Letter (Analog, December 1981) • essay by Charles Platt171 • Letter (Analog, December 1981) • essay by Hal Clement173 • Letter (Analog, December 1981) • essay by Jerry Puornelle
