The papers thus roughly sketched out lay for three or four years in my portfolio, until I found myself in London, in 1832, on the eve of returning to the United States. I then endeav ored to arrange them for the press, but the preparations for departure did not allow sufficient leisure. Several were thrown aside as' incomplete; the rest were put together somewhat hastily and in rather a crude and chaotic manner. In the present edition I have revised and rearranged the whole work, enlarged some parts, and added others, including the papers originally omitted; and have thus endeavored to render it more complete and more worthy of the indulgent reception with which it has been favored.
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