Congress.
The Provisional Congress of the Confederate States closes its term of existence with the present week. It is impossible for us to say whether the body has performed its duty to the public or not; for, having always deliberated with closed doors, its officers and members alone are the possessors of its secrets.--The new Congress will assemble on the 18th, (next Tuesday,) on the 19th the votes for President and Vice-President will be counted, and on the 22d the President will be inaugurated.