And be it enacted, That, after the Expiration of the said Twenty-one Days it shall not be lawful for any Commissioner, Collector, Officer, or other Person to administer or cause to be administered, or receive or cause to be received, any Oath, solemn Affirmation, or Affidavit, in the lieu of which such Declaration as aforesaid shall have been directed by the Lords Commissioners of His Majesty's Treasury to be substituted.