...e dull, heavy booming of Hooker's guns to the left, a bright flash of a musket to the right, and in front of our line, told of approaching danger. Almost instantly the whole picket line in front of Mersey 's brigade was ablaze, and retiring before our advancing column. Scarcely had the pickets reached the works, until every man of the long, sinuous line, which a moment before seemed wrapped in slumbe...