...ret Fuller Ossoli may now be studied. It will be portrayed, so far as possible, from original documents; the first place being given to a letter, relating to her, not included in the Memoirs, from Mr. Cass, then American charge d'affaires at Rome, and one of the few in whom she put confidence, at the great crisis of her life. The letter is addressed to Mrs. W. Ellery Channing, of Concord, Massa...