WASHINGTON CITY, _January 28, 1840_.
_To the Senate and House of Representatives of the United States_:
I present for your information a communication from the Secretary of
War, accompanied by a report and documents from the Chief Engineer, in
relation to certain works[61] under the superintendence of that officer
during the past year. These documents were intended as a supplement to
the annual report of the Chief Engineer, which was laid before Congress
at the commencement of the session.