Lieut. Arnold.Oakfield. A Novel. $1.00.Henry D. Thoreau.Walden: or, Life in the Woods. 1 vol. 16mo. $1.00.Washington Allston.Monaldi, a Tale. 1 vol. 16mo. 75 cents.Professor E. T. Channing.Lectures on Oratory and Rhetoric. 75 cents.Dr. Walter Channing.