A letter from Mrs. Christian Hart, to Mrs. Margaret Caroline Rudd : elucidating several circumstances which did not appear onthe trial : refuting particular falsities and mal-aspersions asserted by that notified lady : and relating a circumstantial account of her transactions during the time Mrs. Hart lived servant with her : the whole authenticated by the affidavit of Mrs. Christian Hart, which is deposited in the hands of the publisher, and a copy of which is annexed.