Some time after they had been in office (after Lord Londonderry's death) they found in a drawer, which apparently had been forgotten or overlooked, some papers, which were despatches and copies of correspondence between Lord Castlereagh and Lord Stewart. These despatches were very curious, and more particularly so after his attack last year on Canning for misappropriating the secret service money, for they gave an account of his own employment of the secret service money in getting Italian witnesses for the Queen's trial. There was likewise an account of the discovery Stewart had made of the treachery of an office messenger, who had for a long time carried all his despatches to Metternich before he took them to England, and Lord Stewart says, 'I tremble when I think of the risk which my despatches have incurred of coming before the House of Commons, as there were letters of Lord Londonderry's written expressly "to throw dust in the eyes of the Parliament."' These were his own expressions, and he said, 'You will understand this and know what to say to Metternich.' In fact, while Lord Castlereagh was obliged to pretend to disapprove of the Continental system of the Holy Alliance he secretly gave Metternich every assurance of his private concurrence, and it was not till long after Mr. Canning's accession that Metternich could be persuaded of his sincerity in opposing their views, always fancying that he was obliged to act a part as his predecessor had done to keep the House of Commons quiet.