In the year 1825 Mr. Troughton paid a visit to Paris, and in 1830 he received an honorary gold medal from the King of Denmark. During the latter portion of his life he became almost entirely deaf, only hearing by the aid of a powerful trumpet. He died at his house in Fleet Street, June 12, 1835, in the eighty-second year of his age, and was buried at the Cemetery, Kensal Green.--_Monthly Notices of the Royal Astronomical Society_, vol. 3, February, 1836. RICHARD WATSON, BISHOP OF LLANDAFF, D.D., F.R.S., &c. Born August, 1737. Died June 4, 1816. Richard Watson, celebrated both as an able theologian, and as a professor of chemistry, was born at Haversham, near Kendal in Westmoreland. His ancestors had been farmers of their own estates for several generations, and his father, a younger son, was for forty years the head master of the Grammar-school at Haversham, but had resigned his duties about the period of the birth of his son Richard. Young Watson received his education at this school, and about a year after his father's death, in 1753, was sent on an exhibition of 50_l._ belonging to the school, to Trinity College, Cambridge, where he was admitted as a sizar on the 3rd of November, 1754. All he had, besides his exhibition, to carry him through college, was a sum of 300_l._ which his father had left him, but he set bravely to work, to make his way to independence by hard study and hard living; his dress is said at first to have been a coarse mottled Westmoreland coat, and blue yarn stockings. In May, 1757, he obtained a scholarship, and in the September following, while still only a junior soph, he began to take pupils, continuing to be employed, first as private, then as a college tutor, until in October, 1767, he became one of the head tutors of Trinity College. Meanwhile Watson had taken his degree of B.A. in January, 1759, being classed as second wrangler, which he seems to have considered, and not without reason, as the place of honour for the year; the senior wrangler, who was a member of St. John's, having, as it was generally believed, been unfairly preferred to him. In October, 1760, he was elected a fellow of his college, and in November, 1764, on the death of Dr. Hadley, he was unanimously elected by the senate to the professorship of chemistry, although at that time he knew nothing of the science. Watson did not, however, disappoint the confidence that was placed by others in his abilities. With the assistance of an operator, whom he immediately sent for from Paris, and by shutting himself up in his laboratory, he acquired such an acquaintance with his new subject, as to enable him in about fourteen months to read his first course of lectures, which were honoured with a numerous attendance, and proved highly successful. Other courses followed which were equally well received; and, in 1768, he printed a synopsis of the principles of the science, under the title of 'Institutiones Metallurgicæ.'