...swallow the dispatch and keep mum. Couriers returning from Chancellorsville reported they had been unable to communicate with our troops, wno were falling back; and the Federal troops were already at Chancellorsville and sending out scouting detachments. It was now nearly 9 o'clock A. M We wheeled about and moved on towards Chancellorsville. But finding a strong force in our front, we turned to the right towa...