An Act to amend and continue until the Twenty-fifth Day of March One thousand eight hundred and thirteen, an Act of the Forty-fifth Year of His present Majesty, for appointing Commissioners to enquire into the Public Expenditure and the Conduct of the Public Business, in the Military Departments therein mentioned; and another Act, of the Fifty-first Year of His present Majesty, for continuing and extending the same to Public Works executed by the Office of Works and others.