LE VERRIER, URBAIN JEAN JOSEPH. - THE FIRST STEPS TOWARDS DISCOVERING NEPTUNE.

Premier Mémoire sur la théorie d'Uranus.

(Paris, Bachelier), 1845. 4to. No wrappers. In: "Comptes rendus hebdomadaires des séances de l’Académie des sciences", Vol. 21, No 19. Pp. (1009-) 1082 (entire issue offered). With titlepage to vol. 21. Le Verrier's paper: pp. 1050-1055. Stamp to top of titlepage.

First appearance of Le Verrier's first paper on the anomalities in the orbit of Uranus, the calculations on which eventually leading to his prediction and discovery of a new planet, Neptune the following year, 1846.

Order-nr.: 48802