XXII. Provided always, That where any of the said Houses or other Buildings, after the same shall have been Once inhabited or occupied, shall at the Time of making any of the said Rates or Assessments be empty or unoccupied, then and in every such Case it shall be lawful for the said Commissioners to rate and assess such Premises respectively at One Half of such Rates or Assessments, and no more, during the Time only such Premises shall be empty or unoccupied; and also in case any such Premises, after the making of any such Rate or Assessment, shall become empty or unoccupied, One Half only of such Rate or Assessment shall be charged on such Premises respectively, for and during so long Time as the same shall continue empty or unoccupied; and than and in every such Case the said Rate or Assessment, and all Arrears due thereon, shall be paid by the Person or Persons for the Time being entitled to such Premises, or by the First or any other Tenant or Occupier thereof, and every such Tenant or Occupier shall and may and is hereby authorized to deduct and retain the same out of his or her Rent, and the Person or Persons for the Time being entitled to such Premises is and are hereby required to allow such Deduction; and that where any House, Building, Tenement, or Hereditament, in respect whereof any Rate or Assessment shall be made as aforesaid, shall be let to more than One Tenant, any One or more of such Tenants shall be deemed the Occupier or Occupiers thereof for the Purposes of this Act. Proportion of Rates to be paid by Persons removing. XXIII. Provided also, That in all Cases where any Person shall remove from or quit any House, Building, Tenement, or Hereditament, which shall be rated or assessed by virtue of this Act, such Person shall be liable to such Rate or Assessment in Proportion to the Time that he or she occupied the same; and in all Cases where any Person shall come into or occupy any House, Building, Tenement, or Hereditament, rated or assessed as aforesaid, out of or from which any other Person, who shall have been rated or assessed for the same, shall be removed, or which at the Time of making any Rate or Assessment was empty or unoccupied, the Person coming into or occupying the same shall be liable to pay such Rate or Assessment in respect thereof in Proportion to the Time that he or she occupied the same; which said respective Proportions, in case of Dispute, shall be settled and ascertained by the said Commissioners. Recovery of Rates.