Where, by any Act of Parliament, Power is given to make a Supplementary Assessment for any Portion of the Year from Whitsunday to Whitsunday, such Power shall not be affected by this Act; and the Assessors under this Act are hereby respectively authorized and required to make up such Supplementary Valuation Roll as may be necessary in order to such Supplementary Assessment: Provided always, that such Supplementary Assessment shall be made upon the Proprietors, Tenants, or Occupiers liable thereto, according to the Valuations established by this Act of the respective Lands and Heritages of which they are such Proprietors, Tenants, and Occupiers respectively for the Year, to a Portion of which such Supplementary Assessment applies : Provided also, that every Assessor making up such Supplementary Valuation Roll shall transmit or cause to be transmitted to each Person included therein, whether as Proprietor, Tenant, or Occupier, a Copy of every Entry in such Supplementary Valuation Roll wherein such Person shall be set forth either as Proprietor, Tenant, or Occupier, along with a Notice to such Person that if he considers himself aggrieved by such Supplementary Valuation he may appeal against the same as after mentioned, and it shall be lawful for every such Person to appeal within Fourteen Days there-after to the Court of Appeal established by this Act; and such Court shall have the Power of granting Relief against such Supplementary Valuation so appealed against, to such Extent and in such Way and Manner as to such Court may seem just.