...ed the railroad trestle over Grisson's creek. About this time Loring's division was at Canton, Whitfield's and Cosby's brigades of cavalry were covering Vicksburg from Brownsville to Raymond, and Wirt Adams , promoted to brigadier-general, was operating at the south. The latter made a demonstration against Natchez, occupied by a considerable Federal garrison, early in December, but the Federals were pr...