Provided always, and be it enacted, That nothing contained in this Act, or in any of the Acts herein recited or referred to, shall extend or be deemed or construed to extend to repeal, alter, or affect an Act passed in the Tenth Year of the Reign of His late Majesty George the Fourth, intituled An Act to consolidate and amend the Laws relating to the Management and Improvement of His Majesty's Woods, Forests, Parks, and Chases; of the Land Revenue of the Crown within the Survey of the Exchequer in England ; and of the Land Revenue of the Crown in Ireland ; and for extending certain Provisions relating to the same to the Isles of Man and Alderney; or an Act passed in the Second Year of the Reign of His late Majesty William the Fourth, intituled An Act for uniting the Office of the Surveyor General of His Majesty's Works and public Buildings with the Office of the Commissioners of His Majesty's Woods, Forests, and Land Revenues, and for other Purposes relating to the Land Revenues, or any of the Clauses or Provisions in the said last-mentioned Acts respectively contained.