CONTENTS: ~ ~ SERIAL: Prophet of Dune (Part 1 of 5) [Frank Herbert]; NOVELETTE: A Matter of Timing [Harry Harrison (as Hank Dempsey)]; SHORT STORIES: Final Report [Richard Grey Sipes]; Finnegan's Knack [John T. Phillifent]; The New Boccaccio [Christopher Anvil]; A Nice Day for Screaming [James H. Schmitz]; ARTICLES: Race Riots [John W. Campbell Jr.]; It's Done with Mirrors [Ben Bova & William F. Dawson]