The Eighteen Nineties have become legendary: the period of Wilde, Beardsley and the Yellow Book; a decadent twilight at the close of the Victorian century, when young poets weary of life sat about drinking absinthe and talking of strange sins. The provenance of this beguiling picture is peculiar, for the myth of the Decadent Nineties was created during the period itself. It was an age of artistic self-consciousness, during which writers and painters...