His residence was varied, though his favourite studies do not appear to have been interrupted, by an invitation to undertake the care of the late Lord Spencer, then a boy of seven years old. This was in 1765. The next five years he spent with his pupil chiefly at Harrow, and occasionally at Althorp, or in London, or on the continent. It appears from the college books that he resided at Oxford very little in the years 1766, 1767, and 1768. Wherever he was, his time was diligently employed, not only in his severer studies, but in the pursuit of personal accomplishments and the cultivation of valuable acquaintances, especially with those who, like himself, were attached to the investigation of Eastern languages and science. In 1768 he received a high, but an unprofitable compliment, in being selected to render into French a Persian Life of Nadir Shah, transmitted to the English government by the King of Denmark for the purpose of translation. To this performance, which was printed in 1770, Mr. Jones added a ‘Treatise on Oriental Poetry,’ in which several of the odes of Hafiz are translated into verse. This also was written in French; and it has justly been observed by a French writer in the ‘Biographie Universelle,’ that the occurrence of some imperfections of style ought not to interfere with our forming a high estimate of the talents of a man who, at the age of twenty-two, possessed the varied qualifications and recondite acquirements displayed in this work. By the end of the same year, 1770, the author finished his ‘Commentaries on Asiatic Poetry,’ a Latin treatise, which for its style is commended by the competent authority of Dr. Parr; and which has also obtained high praise for the taste and judgment displayed in selecting and translating the passages by which the text is illustrated. It was not printed till 1774.