La Langue des Calculs - Objet de cet Ouvrage; La Langue des Calculs consideree dans ses commencements; Des operations du Calcul avec les chiffres et avec les lettres. (Oeuvres de Condillac, Revues, corrigees par l'Auteur, imprimees sur ses manuscrits aut…

484 pp. 8vo. Nine folding plates follow text. French text. A posthumously published work left incomplete upon Condillac's death, which constituted the final volume of his 'Oeuvres.' This and the work immediately preceding it (La logique) exercised considerable influence on the philosophers and scientists of the next generation, introducing algebra as a form of philosophical and scientific language, and shaping the way scientific explanation evolved within numerous disciplines.