Shannon Navigation Act, 1839

Tolls may be raised or lowered.

XLIX. And be it enacted, That it shall be lawful for the said Commissioners, and they are hereby authorized and empowered, from Time to Time as they shall think fit, with the Approbation of the said Commissioners of the Treasury, to reduce all or any of the Rates or Tolls by this Act authorized to be taken, and afterwards from Time to Time to raise the same or any of them, and then to take such higher Rates, provided the same respectively shall not at any Time exceed the Amount by this Act authorized: Provided also, that if any such Rates or Tolls shall have been let or demised by the said Commissioners, no Alteration shall be made in the Sums payable for the same during the Continuance of such Lease or Demise, unless with the Consent in Writing of such Tenant or Lessee.