A commentary on the treaties entered into between His Britannic Majesty, and His Most Faithful Majesty, signed at London, the 28th of July, 1817; between His Britannic Majesty, and His Catholic Majesty, signed at Madrid, the 23rd of September, 1817; and between His Britannic Majesty, and His Majesty the King of the Netherlands, signed at the Hague, the 4th of May, 1818