It is an essay book. There are at least three classes of persons who travel in our own land and abroad. The first and largest in number consists of those who, 'having eyes, see not, and ears, hear not', anything which is profitable to be remembered. Crossing lake and ocean, passing over the broad prairies of the New World or the classic fields of the Old, though they look on the virgin soil sown thickly with flowers by the hand of God, or on scenes memorable in man's history, they gaze heedlessly, and when they return home can but tell us what they ate and drank, and where slept—no more; for this and matters of like import are all for which they have cared in their wanderings. Inadequate, indeed, are these letters as a memorial and vindication of that struggle, in comparison with the history which Madame Ossoli had written, and which perished with her; but well do they deserve to be preserved, as the record of a clear-minded and true-hearted eyewitness of, and participator in, this effort to establish a new and better Roman Republic. In one respect they have an interest higher than would the history. They were written during the struggle, and show the fluctuations of hope and despondency-which animated those most deeply interested.