Bordeaux: Imprimeur de la Revue Catholique, 1843. 8vo. 218 x 133 mm. (8 1/2 x 5 1/4 inches). 15 pp. Later wrappers. Inscribed copy by the author to Omalius d'Halley, member of the Belgian senate. First edition (not an offprint). Important scientific argument advocating the unity of all mankind, with specific..... More