Astral amour by Willy (Henry Gauthier-Villars, 1859-1931, Colette's husband) was originally published as an eight-part serial in the Nouvelle Revue between December 1900 and April 1901 and was never reprinted in book form.

As an account of the social and psychological aspects of the occult revival in the 19th century, Astral Amour does have the advantage of a unique originality. It is more a commentary on occult fantasy than an occult fantasy in its own right, although it is willing to use the fantastic as a casual literary device for the purpose of that examination. Neurocyme, the elemental woman given flesh by the novel's protagonists Enogat de Sotherm s and Doctor Callidulus, is described by them as a mixture of illusion and irony--and the same alchemical combination applies to the text, which is simultaneously all illusion and all irony.