To Have and Have Not on 15 October 1937 to a first edition print-run of approximately 10,000 copies. Cosmopolitan Magazine published a section of the novel as "One Trip Across" in 1934; Esquire Magazine published a section as "The Tradesman's Return" in 1936. The novel was adapted into a 1944 film, starring Humphrey Bogart and Lauren Bacall. The film, directed by Howard Hawks, changed the story's setting from Key West to Martinique under the Vichy regime, and made significant alterations to the plot, including getting rid of Hemingway's Marxist overtones, and turning the story into a romantic thriller centering on the sparks going on between
Sleep and memory actually become worse at the task. The individuals that were allowed a 30-60 minute nap seemed to gain stabilization of the skill as no deterioration occurred. If allowed a 60-90 minute nap (REM sleep and slow-wave sleep), individuals displayed enhancement. Unlike the motor task, enhancement was not suppressed during the nocturnal sleep if the individual had napped earlier. In the situation of visual skill learning, naps have been shown to prevent wakeful deterioration and even enhance learning above and beyond enhancement occurring in nocturnal sleep. Shift workers who work throughout the night have been known to have far more accidents