International audienceImperial science and heterodox discourses: Élisée Reclus and French colonialism.-- The geographical works by Élisée Reclus which were very well-known in Europe the second half of the 19th century, were at the time among the main encyclopaedic references where both scholars and cultivated readers could find ethnographic and geographic information on non-European countries. As Reclus was not only a famous geographer, but also a protagonist of the foundation of the international socialist and anarchist movement, an analysis of these sources is very important to obtain information on the tendencies of the progressive French and European public opinion in the colonial age. This paper deals with the part of Reclus' work dedi...