And be it enacted, That if in any Case it shall appear to be expedient, on account of the Extent or Population or other peculiar Circumstances of the Parish or District in which any such Rectory without Cure of Souls shall be situate, or from the incompetent Endowment of the Vicarage or Vicarages, or Perpetual Curacy or Curacies, dependent on such Rectory, to annex the Whole or any Part of the Lands, Tithes, or other Hereditaments or Endowments belonging to such Rectory to such Vicarage or Vicarages, Curacy or Curacies, such Annexation may be made, and any such Vicarage or Curacy may be constituted a Rectory with Cure of Souls by the Authority herein-after provided; and that wherever any Rectory heretofore deemed a Rectory without Cure of Souls has been held together with the Vicarage dependent thereon for the Period of Twenty Years last past, the same shall not be construed to be a Rectory without Cure of Souls within the Meaning of this Act, but such last-mentioned Rectory and Vicarage shall continue and be permanently united, and shall be a Rectory with Cure of Souls; subject nevertheless to all the Provisions of the thirdly-recited Act, and to the Provisions of this Act which relate to the Division of Benefices or the Apportionment of the Incomes thereof.