EN
The study is devoted to Stefanik's activities in the period 1909-1914. His scientific missions, especially the mission to Ecuador are its centre of gravity. The author depicts them mainly in the light of the French archives. The author analyses the circumstances in which it arose and its results more than the actual course of the mission. He places the mission in the wider context of international relations before the First World War. The majority of Stefanik's planned projects did not succeed for various reasons. The author does not omit the presentation of Stefanik's activity by historians