Introduction: Who is a "scientist"? -- Nature's shifting audience, 1869-1875 -- Nature's contributors and the changing of Britain's scientific guard, 1872-1895 -- Defining the "man of science" in Nature -- Scientific internationalism and scientific nationalism -- Nature, interwar politics, and intellectual freedom -- "It almost came out on its own" : Nature under L.J.F. Brimble and A.J.V. Gale -- Nature, the Cold War, and the rise of the United States -- "Disorderly publication" : Nature and scientific self-policing in the 1980s.