...r the city. We shall see. I rode around the lines to-night, and am impressed with the feeling that, were our numbers only equal to the spirit and courage of our men, no emergency could endanger Knoxville ; but alas! our defences are as yet incomplete, and our lines are fearfully thin. If the rebels come on with the much boasted dash of the veterans of the Potomac, and assault, our lines may be bro...