§ In order to avoid all doubt respecting the reduction upon the duties in favour of British commerce, which his Sicilian Majesty has promised in the 7th article of the convention, signed this day between his Britannic Majesty and his Sicilian Majesty, it is declared by this present, separate, and additional article, that by the concession of ten per cent. of diminution, it is understood, that in case the amount of the duty should be twenty per cent. upon the value of the merchandise, the effect of the reduction often per cent. is to reduce the duty from twenty to eighteen; and so for other cases in proportion. And that for the articles which are not taxed ad valorem in the tariff, the reduction of the duty shall be proportionate; that is to say, a deduction of a tenth part upon the amount of the sum payable shall be granted.
§ The present separate and additional article shall have the same force and validity as if it had been inserted, word for word, in the convention of this day—it shall be ratified, and the ratification thereof shall be exchanged at the same time.
§ In witness whereof, the respective plenipotentiaries have signed it, and have thereunto affixed the seal of their arms.
243§ Done at London, the 26th of September, 1816.
§ (L. S.) CASTLEREAGH.
§ (L. S.) CASTELCICALA.