From the 71st Erskine in 1763 exchanged into the 24th Regiment, in which he became Captain. Retiring from the army, he settled at Edinburgh. There he resided after 1790 with his sister, Lady Colville, at Drumsheugh, near the Dean Bridge. He was an extraordinary pedestrian, and walked nearly every morning to Queensferry, about ten miles distant, where he breakfasted at Hall’s Inn. He dispensed with attendance, and when he had finished his repast, left payment under a plate. He was of a tall, portly form, and to the last wore gaiters and a flapped vest. Though satirical with his pen, he was genial and humorous in conversation. He was an early admirer and occasional correspondent of the poet Burns. Like his brother, “the musical Earl of Kellie,” he was a lover of Scottish melodies, and was one of a party of amateurs who associated with Mr. George Thomson in designing his “Collection of Scottish Airs.” He actively assisted Mr. Thomson in the earlier stages of his undertaking. Several songs from his pen, Burns, in a letter to Mr. Thomson, written in June, 1793, described as “pretty,” adding, his “Love song is divine.” The composition so described beginning “How sweet this lone vale,” became widely popular; but the opening stanza only was composed by him. He was one of the early friends of Archibald Constable, the eminent publisher, who, in an autobiographical fragment has described him as having “an excellent taste in the fine arts,” and being “the most unassuming man he had ever met.”[18] His habits were regular, but he indulged occasionally at cards, and was partial to the game of whist. Having sustained a serious loss at his favourite pastime he became frantic, and threw himself into the Forth, and perished. This sad event took place in September, 1793. In a letter to Mr. Thomson, dated October, 1791, Burns writes that the tidings of Erskine’s death had distressed and “scared” him. From the day Sir David Dalrymple first named Dr. Samuel Johnson in the post-chaise, Boswell entertained a hope of forming the lexicographer’s acquaintance. On his former visit to London he had exerted some effort to procure an introduction. Derrick promised it, but lacked opportunity. During the summer of 1761, Thomas Sheridan lectured at Edinburgh on the practice of elocution, and charmed Boswell by descanting on Dr. Johnson’s virtues. Through Sheridan an introduction seemed easy, but Boswell on visiting him found that he and the lexicographer had differed. Boswell did not despair. He obtained leave to occupy his friend Mr. Temple’s chambers in the Inner Temple, near Dr. Johnson’s residence, and adjoining his well-known haunts.