(Paris: Gauthier-Villars), 1855. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences"", Vol 41, No 6. Pp. (161-) 228. (Entire issue offered). Hermite's paper: pp. 181-183. Light marginal browning.
First apperance of the paper in which Hermite introduced the so-called Hermetian Matrix, which later should be of great importence for Quantum Mechanics.