Leipzig, B. G. Teubner, 1908. 4to. In ""Mathematische Annalen"", 65. Band, 3 Heft, 1865"". In the original printed wrappers, without backstrip. Front wrapper with small stamp to lower part, otherwise fine and clean. [Clebsch:] Pp. 313-349. [Entire issue: Pp. 331-432].
First printing of Polish mathematician Landsberg's paper on the curvature of calculus of variations" a topic originating in the brachistochrone curve problem raised by Johann Bernoulli (1696).