The Earl of Rosslyn deposed to the following facts:—At the desire of Mr. Stuart he waited on Sir Alexander Boswell to ask if he was the author of the articles in the Glasgow Sentinel. He told Sir Alexander, that if he would say he was not the writer, and had not sent them to the newspaper, that would be sufficient. Sir Alexander said it was a delicate affair, and he thought he should consult with a friend. He consulted Mr. Douglas, who afterwards told witness that he could not advise Sir Alexander to give any answer. Witness had copies of a song and a paper, signed “Ignotus” when he called on Sir Alexander. The song contained two direct imputations of cowardice. At the wish of Sir Alexander, who had affairs to settle, it was agreed between Mr. Douglas and witness, that a delay of fourteen days should take place, and that the meeting should be on the Continent. Witness subsequently asked Mr. Douglas, if there was not a possibility of not carrying the affair any further; and told him Mr. Stuart would be content to treat the song as a very bad joke, provided Sir Alexander would say he did not intend any reflection on Mr. Stuart’s courage. Mr. Douglas said, he had no hope that Sir Alexander would say any such thing. Sir Alexander changed his mind about meeting on the Continent; and it was finally settled that it should take place at Auchtertool. They met: the ground was measured twelve long paces. Witness gave the word: they fired, and Sir Alexander Boswell fell. Mr. Stuart advanced with great anxiety towards Sir Alexander, but witness hurried him to go away. Before any thing took place on the ground, Mr. Stuart asked witness if it was not fit that he should make a bow to Sir Alexander, and express his wish for a reconciliation. Witness thought it right. Mr. Stuart advanced towards Sir Alexander, apparently for that purpose: Sir Alexander’s back was then turned, and he appeared to be walking away from Mr. Stuart. In the whole of Mr. Stuart’s conduct there was no appearance of personal ill-will or resentment against Sir Alexander; but only an anxiety to defend his own character from the imputations with which it had been assailed, particularly from that of cowardice. His conduct, from first to last, was cool, composed, and temperate. On the field, witness desired him to present his side and not his bust: Mr. Stuart replied, “I do not think I ought to take an aim.” Never, from all his acquaintance with Mr. Stuart, knew a man less quarrelsome or less vindictive.