In 1725 this nobleman received the office of Keeper of the Privy Seal, and in December 1733 his Lordship was appointed Keeper of the Great Seal. Upon the decease of his brother, in 1743, the Earl of Ilay became third Duke of Argyle, and Hereditary Justiciary of Argyleshire and the Western Islands. After the suppression of the rebellion in 1746, he carried into effect the judicious plan of employing the Highlanders in the Royal army, which had been suggested by the Right Honourable William Pitt, afterwards the Earl of Chatham. The Duke of Argyle continued at the head of affairs in Scotland, in full possession of his mental faculties, until his death, which happened in London, without a moment’s pain, as he was sitting in his chair at dinner, on the 15th of April 1761, in the seventy-ninth year of his age. On this nobleman’s decease the title of Earl of Ilay became extinct; his other titles and estates in Scotland descended to his cousin, Lieut.-General John Campbell of Mamore, Colonel of the Second dragoons, or Scots Greys. HENRY DESAULNAIS. _Appointed 23d October 1710._ Upon the resignation of Colonel the Earl of Ilay, Lieut.-Colonel Henry Desaulnais (afterwards spelt Desney) was promoted from the Coldstream guards to the Colonelcy of the THIRTY-SIXTH regiment on the 23d of October 1710. In the following year he served with his regiment in the expedition against Quebec, and on the 25th of December 1725 this officer was appointed Colonel of the Twenty-ninth regiment. He died on the 21st of November 1731. WILLIAM EGERTON. _Appointed 11th July 1715._ This officer served with reputation in the wars of King William III. and of Queen Anne. He was promoted to the rank of Colonel in November 1711, appointed Colonel of the THIRTY-SIXTH regiment on the 11th of July 1715, and on the 6th of July 1719 was removed to the Twentieth regiment, which corps he commanded until his decease on the 15th of July 1732. SIR CHARLES HOTHAM, BART. _Appointed 7th July 1719._