...have just heard of the great battle of Gettysburg, in Pennsylvania, on the 1st, 2d and 3d instant, and the defeat of the rebel army under General Lee; and of the capture of Vicksburg, Mississippi, by General Grant , on the 4th instant, with 27,000 prisoners, 128 pieces of artillery, eighty siege guns, and arms and ammunition for 60,000 men. We also hear that Port Hudson, below Vicksburg, on the Mississippi, has...