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 Robarts, Lubbock, & Co. But he had no longer his old energy to employ the leisure thus procured. From 1840 he led a retired life at his residence of High Elms, near Farnborough in Kent, occupied with farming and planting, taking pride in his shorthorns and southdowns, promoting the education of the poor, and teaching his children mathematics, while reserving the early and late portions of each day for abstruse inquiries. From 1860 he suffered from gout and general debility, and died of valvular disease of the heart on 20 June 1865, at the age of sixty-two. His upright, benevolent, and disinterested character had won him universal esteem. He married, on 29 June 1833, Harriet, daughter of Lieutenant-general Hotham of York, by whom he had eleven children, of whom the present baronet, Sir John Lubbock, LL.D., is the eldest. Lady Lubbock survived him until 12 Feb. 1873.

Among Lubbock's separate works were: 1. ‘Six Maps of the Stars,’ executed under his superintendence for the Society for the Diffusion of Useful Knowledge, London, 1830. 2. ‘An Elementary Treatise on the Computation of Eclipses and Occupations,’ 1835. 3. ‘On the Theory of the Moon and on the Perturbations of the Planets,’ in eleven parts, 1833-61 (reprinted from ‘Philosophical Transactions’ and the Royal Astronomical Society's ‘Memoirs’). 4. ‘Remarks on the Classification of the different Branches of Human Knowledge,’ 1838. 5. ‘An Elementary Treatise on the Tides,’ 1839. 6. ‘On the Heat of Vapours and on Astronomical Refraction,’ 1840 (a reprint of papers contributed to vols. xvi. and xvii. of the ‘Philosophical Magazine’). 7. ‘On Currency,’ 1840. 8. ‘On the Gnomonic Projection of the Sphere,’ 1851. 9. ‘On the Clearing of the London Bankers,’ 1860. He also wrote in 1830 ‘On Precession’ (Phil. Trans. cxxi. 17), and in 1848 ‘On Change of Climate resulting from a Change in the Earth's Axis of Rotation’ (Quarterly Journal Geol. Soc.v. 4).

[Proc. Royal Soc. vol. xv. p. xxxii; Monthly Notices, Roy. Astr. Soc. xxvi. 118; Times, 23 June 1865; Athenæum, 1 July 1865; Grant's Physical Astronomy, pp. 120, 162; Whewell's Inductive Sciences, ii. 83, 3rd edit.; Royal Soc. Cat. of Scientific Papers.]  LUBY, THOMAS (1800–1870), mathematician, born at Clonmel, co. Tipperary, in 1800, was descended from a Huguenot family which fled from France in 1685 and settled in Canterbury. His father, John Luby, married Eleanor Fogarty, of the old Irish family of Castle Fogarty. He entered Trinity College, Dublin, as a sizar in 1817, obtained a scholarship in 1819, graduated B.A. in 1821, and proceeded M.A. in 1825 and D.D. in 1840. Elected to a junior fellowship in 1831, he was co-opted senior fellow in 1847. Among the various college offices filled by him were those of university preacher, censor, junior dean, bursar, senior dean, and senior lecturer, Donegal lecturer, and mathematical examiner in the school of civil engineering. He died in Dublin on 12 June 1870, and was buried at Aberystwith. He married first Mary Anne Wetherall, niece of General Sir Frederick Wetherall, K.C.B., and secondly Jane Rathborne of Dunsina, and had six sons and four daughters. His popularity as a college tutor was unexampled. He was a member of the Royal Irish Academy, to which he presented the autograph of Wolfe's 'Burial of Sir J. Moore,' and he wrote for college use 'An Introductory Treatise on Physical Astronomy,' London, 1828, and 'The Elements of Plane Trigonometry,' 1825; third edit. 1852. He also edited Brinkley's 'Astronomy,' Dublin, 1836. and was associated with Sir W. R. Hamilton in many of his publications.

[Taylor's Hist. of the Univ. of Dublin, p. 524; Irish Times, 13 June 1870; Athenæum, 18 June 1870; private information.]  LUCAN, (d. 1814). [See Bingham, Margaret (DNB00).]  LUCAN, (d. 1693). [See Sarsfield, Patrick (DNB00).]  LUCAR, CYPRIAN (fl. 1590), mechanician and author, was born in London in 1544. His grandfather was John Lucar of Bridgwater, Somerset (Visitation of London, 1568, Harleian Soc., p. 49). His father, Emanuel Lucar,was a member of the Merchant Taylors' Company in London in 1534, and was master in 1560-1, the year in which the Merchant Taylors' School was founded. He was a member of the jury which refused, on 17 April 1554, to convict Sir Nicholas Throckmorton of complicity in Wyatt's rebellion, and was consequently committed to the Tower. His first wife, daughter of Paul Withypoll, died 29 Oct. 1537, and was buried in the church of St. Lawrence Pountney, where her husband erected a monument with a eulogistic inscription in English verse (, Diary, pp. 239, 380;, Survey of London, ed. Strype, vol. i. bk. iii. p. 189; , Memorials and Early History of the Merchant Taylors' Company). He married his second wife, Joanna, daughter of Thomas Trumbull, 15 May 1541, and died 28 March 1574. Cyprian was the eldest child of the second marriage. A fifth son, John, entered Merchant Taylors' School 15 June 1569.

Cyprian was admitted a scholar of Winchester College in 1555 (, Winchester