Expedition To Mobile

New York, Jan. 25. By the Atlantic Iroro Mobile, it is reported that a formidable cxpedition bad left Fort Morgan and Gaines, up the East Pascagoula river, to take a position in the rear of Mobile, placing the citv partly at the ruercy of our troops. The river was íound navigable, and its occupation cannot fail to render tho city an 3ay capture. Deserters report that Ehere is much diagatisfaction with the rebel government ia Mobile.