Brewster (David): A Treatise on Optics, Philadelphia, 1833, 12mo, first American edition, woodcut diagrams, original cloth-backed boards -- Laplace (Pierre-Simon, Marquis de): The System of the World, translated from the French by Henry H. Harte, Dublin, 1830, 2 vols., 8vo, contemporary half morocco -- Whewell (William): The Philosophy of the Inductive Sciences, London, 1840, 2vols., 8vo, folding astronomical table (title to vol. I torn at inner margin, table torn along folds and crudely-repaired), contemporary half calf (extremities rubbed); and 8 other contemporary works in English. (13)