now no hesitation in saying, that nothing could ever have induced me to add to the injuries I have already done the family, by firing at the brother of Lady Charlotte Wellesley.” The parties then left the ground. (Signed) R. H. VIVIAN. GEORGE CHARLES MACKENZIE. The cause of the above duel is well known. It arose from the seduction of the lady of the Hon. Henry Wellesley (sister of Captain Cadogan) by Lord Paget. Her husband afterwards gained 20,000_l._ damages in the Sheriff’s Court. BETWEEN LORD CASTLEREAGH AND MR. CANNING. Sept. 21, 1809. A duel took place early this morning between Lord Castlereagh and Mr. Canning, in which the latter received a wound in the left thigh; but happily it is not dangerous, being merely a flesh wound. The meeting took place at Putney Heath. Lord Yarmouth seconded Lord Castlereagh, and Mr. R. Ellis accompanied Mr. Canning. We understand they fired by signal, at the distance of ten yards. The first missed; and no explanation taking place, they fired a second time, when Mr. Canning was wounded in the left thigh, on the outer side of the bone; and thus the affair terminated. He was put into a coach, and conveyed to Gloucester Lodge, his newly purchased seat at Brompton, and Lord Castlereagh returned to his house in St. James’s-square. The circumstances of this celebrated political duel were the following:—“It had been long reported that there were divisions in the Duke of Portland’s cabinet, and that a change in some of the highest offices of State would take place. These divisions became public in the latter end of September, when Lord Castlereagh, then Secretary of War, sent a challenge to Mr. Canning, who held the seals of the foreign office.