In case and when and so often as it is made to appear to Her Majesty in Council, upon the Representation of the Metropolitan Board of "Works, that the Provisions of this Act should be extended to any Parish adjoining the Metropolis, and in which there are not less than Seven hundred and fifty Inhabitants rated to the Relief of the Poor, it shall be lawful for Her Majesty, with the Advice of Her Privy Council, to order that the Provisions of this Act shall extend to such Parish, from and after a Day to be mentioned in this Behalf in the Order in Council, and that such Parish shall join with any Parish or Parishes or District in such Order named in the Election from Time to Time of the Member or Members of the Metropolitan Board of Works by this Act directed to be elected for such Parish or Parishes or District, and to make Such Provision as to the Mode in which every such joint Election shall take place, and otherwise in relation thereto, as to Her Majesty in Council may seem necessary and proper; and every such Order shall be published in the London Gazette ; and from and after the Time mentioned in such Order for the Extension of the Provisions of this Act to any Parish as aforesaid, the Provisions of this Act shall extend to and be in force therein, in like Manner, so far as Circumstances will admit, as such Provisions apply to any Parish mentioned in Schedule (A.) of this Act, subject, nevertheless, to the Provisions in such Order contained in relation to the Election by such Parish jointly as aforesaid of a Member or Members of the said Metropolitan Board: Provided always, that Notice of every such Representation, and of the Time when it shall please Her Majesty to order that the same be taken into consideration by Her Privy Council, shall be published in the London Gazette One Month at least before such Representation is so considered.