For obtaining Payment of the Sums so assessed upon the City of London and the Parishes mentioned in Schedules (A.) and (B.) to this Act, the said Board shall issue Precepts under their Seal, requiring Payment thereof to their Treasurer, or into any Bank therein mentioned, within such Time as may be therein limited, and every such Precept for any Sum assessed upon the City of London shall be directed to the Chamberlain of the said City; and every such Precept for any Sum assessed upon any Parish mentioned in Schedule (A.) to this Act shall be directed to the Vestry thereof; and every such Precept for any Sum assessed upon any District mentioned in Schedule (B.) to this Act, or any Parish comprised therein, shall be directed to the Board of Works for such District ; and where any such Sum is assessed upon any Part of any Parish or District, the said Metropolitan Board shall specify in their Precept the Part of such Parish or District upon which such Sum is assessed.