The Saratoga.
--This superb steamship will be at her berth to-morrow, at Rocketts. This is her first trip; and she will run in connection with her consort, the Niagara, both of which have just been built, by the New York and Virginia Steamship Company, at a cost of one hundred and eighty-five thousand dollars each. They combine all of the modern improvements in their construction. The Saratoga leaves for New York on Saturday morning at 8 o'clock. See advertisement of her agent, Mr. G. F. Watson, in another column, to-day.