...own to a position opposite Fort McRea, where the channel is very narrow, and where, if sunk, it would effectually bar the passage inward of any vessel of size. On the night of the 31st of August, Colonel Brown got an inkling of the design on foot, from the unusual stir at the Navy Yard, the frequent passage of boats to and from the shore, conveying, what afterward proved to be fuel for the furnaces, to the...