Conrad First The Joseph Conrad Periodical Archive
Serialization

Un Avant-poste de la civilisation

in Les Nouvelles Illustrées (Paris, France) (Jan 22, 1903 — Jan 29, 1903):

Vol. 3 (Jan 22, 1903): pp.65–96
Vol. 3 (Jan 29, 1903): pp.97–128

View in Internet Archive BookReader (experimental).
Translated by Marguerite Poradowska. This was the first translation of Conrad's work into French. A full transcription is available online from the Joseph Conrad Society UK's website. Click here

For a detailed discussion of this serialization, first located in 2008, see Anne Arnold, "Marguerite Poradowska as a Translator of Conrad", The Conradian 33/1 (Spring 2008): 119-29.