Prominent Negro Slain By BombMIMS, Fla. UFi—A bomb explosion last night killed a'Negro prominent in national affairs of his race.He was Harry T. Moore, 46, state secretary of the National Association for the Advancement of Colored People.His wife, Harriet, who teaches school at Lake Park near West Palm Beach, was hurt.Th* bomb exploded beneath the bedroom of their small, framehouse about a mile from here.Mims is a tiny community 40 miles south of Daytona Beach.Two Federal Bureau of Investigation agents were reported investigating and a coroner’s jury was called. Gov. Fuller Warren said he was sending an investi-