13.--(1.) Subject to the provisions for the reduction or cesser thereof in this section mentioned, there shall be made on the part of Ireland to the Consolidated Fund of the United Kingdom the following annual contributions in every financial year; that is to say,-- (_a._) The sum of _one million four hundred and sixty-six, thousand pounds_ on account of the interest on and management of the Irish share of the National Debt: (_b._) The sum of _one million six hundred and sixty-six thousand pounds_ on account of the expenditure on the army and navy of the United Kingdom: (_c._) The sum _of one hundred and ten thousand pounds_ on account of the Imperial civil expenditure of the United Kingdom: (_d._) The sum of _one million pounds_ on account of the Royal Irish Constabulary and the Dublin Metropolitan Police. (2.) During the period of _thirty_ years from this section taking; effect the said annual contributions shall not be increased, but may be reduced or cease as hereinafter mentioned. After the expiration of the said _thirty years_ the said contributions shall, save as otherwise provided by this section, continue until altered in manner provided with respect to the alteration of this Act. (3.) The Irish share of the National Debt shall be reckoned at _forty-eight million pounds_ Bank annuities, and there shall be paid in every financial year on behalf of Ireland to the Commissioners for the Reduction of the National Debt an annual sum of _three hundred and sixty thousand pounds_, and the permanent annual charge for the National Debt on the Consolidated Fund of the United Kingdom shall be reduced by that amount, and the said annual sum shall be applied by the said Commissioners as a sinking fund for the redemption of the National Debt, and the Irish share of the National Debt shall be reduced by the amount of the National Debt so redeemed, and the said annual contribution on account of the interest on and management of the Irish share of the National Debt shall from time to time be reduced by a sum equal to the interest upon the amount of the National Debt from time to time so redeemed, but that last-mentioned sum shall be paid annually to the Commissioners for the Reduction of the National Debt in addition to the above-mentioned annual sinking fund, and shall be so paid and be applied as if it were part of that sinking fund. (4.) As soon as an amount of the National Debt equal to the said Irish share thereof has been redeemed under the provisions of this section, the said annual contribution on account of the interest on and management of the Irish share of the National Debt, and the said annual sum for a sinking fund shall cease.