And be it enacted, That the Provisions of the secondly recited [3 & 4 Vict. c. 113. s. 58] Act relating to the Disposal of Residence Houses, and Houses attached to any Dignity, Prebend, or Office in the Precincts of the respective Cathedral and Collegiate Churches, and also so much of an [2 & 3 W. 4. c. 10 (Pr.).] Act passed in the Second Year of the. Reign of His late Majesty as annexes to the Archdeaconry of Durham the House of Residence therein mentioned, shall be repealed ; and that the Dean and Chapter of any Cathedral or Collegiate Church, with the Consent of their Visitor, may from Time to Time sanction and confirm the Exchange of Houses of Residence, or of Houses attached to any Dignities, Offices, or Prebends in the Precincts of such Church, among the Canons of such Church, or may make any such Arrangement to take effect at any future Time, or may assign any One of such Houses being vacant to any Canon willing to accept the same in lieu of the House theretofore occupied by him, and thereupon any House no longer required by any Canon may by the said Dean and Chapter be disposed of, in such Way as they shall deem fit, with the Consent of their Visitor, and of the Ecclesiastical Commissioners for England, signified under their Common Seal; provided that all Acts, Matters, and Things relating to any such House already done under the last-mentioned Provisions of the said secondly recited Act shall be valid and effectual to all Intents and Purposes.