(Paris, Gauthier-Villars), 1906. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome 142, No 2 and No 13. Pp. (69-) 120 a. pp. (741- 816. (Entire issues offered). Seux's papers: pp. 79-81 and pp. 772-773.
First printing of these 2 pioneering papers in aeronautics, the theory here stated eventually lead to the construction of the ""Seux monoplane"" and the ""Roesch-Seux aeroplane"".Brockett ""Bibliograpy of Aeronautics"" No 11072 a. 11083.