...fronting Buell's army. On the evening of the 7th a portion of the right wing of the army of the Mississippi (Cheatham's division, composed of Donelson's, Stuart's, and Maney's brigades,) moved from Harrodsburg to Perryville, where they rested on their arms in line of battle till daylight. The pickets skirmished all night. On the morning of the 8th, at daylight, at the centre of the lines there were cav...