came mathematical tutor; in 1786 it was presented to New College, Hackney; and was ultimately deposited in Dr. Williams's Library when at Red Cross Street; in 1821 it is mentioned as still existing, but only a few broken remnants now remain (1891).
Horsley published: 1. ‘Vows in Trouble,’ &c., 1729, 12mo. 2. ‘The Vanity of Man … Funeral Sermon for … Jonathan Harle, M.D.,’ &c., 1730, 8vo. 3. ‘Some Account of the Life of … Harle,’ &c.; included, with No. 2, in Harle's ‘Two Discourses,’ &c., 1730, 4to. 4. ‘A Brief and General Account of the … Principles of Statics, Mechanics, Hydrostatics, and Pneumatics,’ &c., Newcastle-upon-Tyne [1731?], 12mo (a handbook to his lectures). Posthumous were: 5. ‘Britannia Romana, or the Roman Antiquities of Britain, in Three Books,’ &c., 1732, fol. The three books deal respectively with history, inscriptions, and geography; there are 105 copper-plate engravings. The British Museum has a copy with additions by John Ward, LL.D. The map of ancient Britain is reproduced in D'Anville's ‘Ancient Geography,’ 1775, fol. The original copper-plates were offered for sale by Randall in 1763 to the Society of Antiquaries; in 1769 to Richard Gough [q. v.] for 100l.; in 1780 to Andrew Gifford [q. v.] for twenty guineas. No sale was effected; John Nichols, in December 1784, would have given forty guineas for them, but they were already melted down. 6. ‘A Map of Northumberland, begun by the late John Horsley, F.R.S., continued by the Surveyor he employed [George Mark],’ &c., Edinburgh, 1753. 7. ‘Materials for the History of Northumberland,’ 1729–30, printed in ‘Inedited Contributions to the History of Northumberland,’ &c. [1869], 8vo. Horsley had projected histories of Northumberland and Durham. His paper on the Widdrington rainfall is in ‘Philosophical Transactions,’ xxxii. 328.
[Hutchinson's View of Northumberland, 1778, i. 202 sq.; Nichols's Anecdotes of Bowyer, 1782, p. 371; Wood's Parish of Cramond, 1784, p. 4; Nichols's Lit. Anecd. 1812, ii. 48; Turner in Newcastle Magazine, March 1821, p. 426 sq.; Calamy's Own Life, 1830, ii. 148; Hodgson's Memoirs of … Horsley, 1831; Hodgson's Hist. of Northumberland, 1832, vol. ii. pt. ii. pp. 443 sq.; Catalogue of Edinburgh Graduates, 1858, p. 170; Hinde in Archæologia Aeliana, February 1865; James's Hist. Litig. and Legis. Presb. Chapels, 1867, p. 67?]
HORSLEY, SAMUEL (1733–1806), bishop of St. Asaph, son of John Horsley, by his first wife, Anne, daughter of William Hamilton, D.D., principal of Edinburgh University, was born on 15 Sept. 1733 in St. Martin's Place, by St. Martin's-in-the-Fields, at which his father was lecturer. He was baptised on 8 Oct., and Zachary Pearce, vicar of St. Martin's, afterwards bishop of Rochester, was his godfather. The bishop's grandfather, Samuel Horsley, who was born on 17 March 1669 and died on 4 July 1735, was second son of William Horsley of Broxbourne, Hertfordshire (d. 10 Feb. 1709). John Horsley, the bishop's father (1699–1777), born on 13 Nov. 1699, was educated for the dissenting ministry at the university of Edinburgh, where, on 24 Feb. 1723, ‘Johannes Horseley’ and Isaac Maddox (sic), ‘Angli præcones evangelici, academiæ olim alumni,’ were ‘nunc demum’ admitted to the degree of M.A., the diploma being given on 9 March. Neither John Horsley nor Madox (afterwards bishop of Worcester) seems to have held any dissenting pastorate; both are included by Calamy among those who conformed about 1727. John Horsley, while still lecturer at St. Martin's, became (1745) rector of Thorley, Hertfordshire; he further received from Madox the rectory of Newington Butts, Surrey, a peculiar in the gift of the Bishop of Worcester. As his second wife, he married Mary, daughter of George Leslie; by whom he had three sons and four daughters. Mary, his second daughter (1747–1824), married William Palmer, of Nazeing Park, Essex, grandfather of Roundell Palmer, first earl of Selborne. He died on 27 Nov. 1777, aged 78; his widow died on 21 Oct. 1787 at Nazeing, Essex.
Samuel Horsley received his early training from his father. In a letter of 20 Feb. 1770 he says that he learned Latin without a master. A letter to his maternal grandmother from William Cleghorn, professor of moral philosophy at Edinburgh, dated ‘Huntingdon, 26th Octr. 1750,’ gives a minute description of him at the age of seventeen; his eyes and his complexion ‘dark as a raven, his nose even set,’ his brows ‘begin to shew that they are somewhat capable of assuming his father's frown.’ He was admitted pensioner at Trinity Hall, Cambridge, on 24 Oct. 1751, became a fellow-commoner in 1757, and took his name off the books in 1758, in which year he graduated LL.B. He became curate at Newington, succeeding to the living on his father's resignation in 1759. On 4 April 1767 he was elected fellow of the Royal Society; his pursuit of astronomical and geometrical science is proved by his earliest publications. In 1768 he went to Oxford as private tutor at Christ Church to Heneage Finch, lord Guernsey, afterwards (1777) fourth earl of Aylesford. It is an
