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Application of revenue. | 
65.—The monies from time to time received by the Commissioners in respect of the tolls hereby made payable shall be applied:— | 
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Firstly: —In paying the interest on monies borrowed under the Act of 1855 and this Act, | 
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Secondly: — In payment of the sums by this Act required to be set aside to form a sinking fund, at the times and in the manner hereinbefore provided, | 
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Thirdly: — In maintaining and regulating the port and harbour and the navigation thereof, and in making such payments and contributions as the Commissioners are by section 9 of the Dundalk Pilotage Order 1920 authorised to make, | 
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and the surplus (if any) shall be applied in the payment of the mortgage debt for the time being owing by the Commissioners. |