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 plants. In 1781 he issued ‘An Account of a Method of Preserving Water at Sea,’ in which he proposed the use of lime to prevent putrefaction.

On the organisation of the Manchester Literary and Philosophical Society in 1781 he was appointed one of its secretaries. He became its president in 1807, and retained the position during the rest of his life. Many papers were read by him before the society, and some are printed in its ‘Memoirs.’ These comprise essays on the ‘Advantages of Literature and Philosophy,’ ‘Ferments and Fermentation,’ ‘Observations on the Bills of Mortality of Manchester and Salford,’ ‘The Nature of Wool, Silk, and Cotton as objects of the Art of Dyeing,’ and a ‘Memoir of Dr. Charles White.’ In 1783 he published ‘Memoirs of Albert de Haller,’ and helped to establish in Manchester a College of Arts and Sciences, in connection with which he delivered several courses of lectures on chemistry. In these lectures he was assisted by his son, Thomas Henry, jun., a youth of promise, who died young. He also lectured on bleaching, dyeing, and calico-printing. Henry was clear-headed, ready, and practical. Although his special study was pursued amid the anxieties of business, he occasionally contributed to medical journals, and interested himself in the literature and politics of the day. He was an early member of one of the first societies for the abolition of the African slave trade. About middle life he left the church of England and joined the unitarians.

He died on 18 June 1816, aged 81, and was buried at the Cross Street Unitarian Chapel, Manchester. His son William is separately noticed. His portrait, by Joseph Allen, belongs to the Manchester Literary and Philosophical Society. 

HENRY, THOMAS (1807–1876), police magistrate, eldest son of David Henry of St. Stephen's Green, Dublin, head of the firm of Henry, Mullins, & MacMahon, government contractors, was born in Dublin in 1807. He was educated at Von Feinagle's school in that city and at Trinity College, where he graduated B.A. 1824, and M.A. 1827. On 23 Jan. 1829 he was called to the bar at the Middle Temple, went the northern circuit, and attended the West Riding of Yorkshire sessions. He was magistrate at the Lambeth Street police-court, Whitechapel, from April 1840 till 1846, when he was transferred to Bow Street, became chief magistrate there 6 July 1864, and was knighted on 30 Nov. He discharged his duties with general approval. To him is very largely due the existing law of extradition; the Extradition Act and the various treaties connected therewith between England and foreign powers were in each case drawn by him. He was for many years the chief adviser of the government on all questions of administrative and correctional police, and his opinion was acted upon in the various licensing bills, the betting acts, Sunday trading legislation, and similar measures. He gave evidence before the committee on theatrical licenses, and pointed out with great precision the position of music-halls and casinos as places of amusement, and the degree of police supervision to which it is desirable that they should be subjected (Report on Theatrical Licenses, 1866, pp. 30–8). He died at his residence, 23 Hanover Square, London, 16 June 1876, and was buried in the ground of St. Thomas's Roman catholic church, Fulham, on 21 June. 

HENRY, WILLIAM, D.D. (d. 1768), dean of Killaloe, was probably a native of Gloucestershire, and was educated at the university of Dublin. His entrance and date of his B.A. degree are not recorded, but he proceeded M.A. vernis 1748, and B.D. and D.D. vernis 1750. Henry was the friend and chaplain to Dr. Josiah Hort [q. v.], who was consecrated to the see of Ferns in 1721, and was translated to Kilmore in 1727, and to Tuam in 1741. By this prelate he was collated to the benefice of Killesher, diocese of Kilmore, co. Fermanagh, 1 Oct. 1731. Henry became rector of Urney, diocese of Derry, co. Tyrone, in 1734, and dean of Killaloe 29 Nov. 1761. He died in Dublin on 13 Feb. 1768, and was interred at St. Anne's in that city. His wife survived him, and remarrying with Surgeon Doyle of Dublin (whom she also survived), died in February or March 1793. Henry was a popular preacher, a keen observer of natural history and phenomena, and an earnest advocate both for temperance and for civil and religious liberty. He was elected F.R.S. of London 20 Feb. 1755. At least twelve of his single sermons were printed, and three