...ile almost daily some cheering news enlivens the quiet scenes. To-day we hear that Fitzhugh Lee crossed the Rappehannock on Monday night, some miles above, and scouted down to within three miles of Falmouth , taking 150 Yankee prisoners, killing 40, and having only six men wounded. I hear no other particulars.--Another report says a Yankee picket asserts that the New York Herald says the Conscription b...