See also:

• THOMAS
• THOMAS (c. 1654-1720)
• THOMAS (d. 110o)
• THOMAS, ARTHUR GORING (1850-1892)
• THOMAS, CHARLES LOUIS AMBROISE (1811-1896)
• THOMAS, GEORGE (c. 1756-1802)
• THOMAS, GEORGE HENRY (1816-187o)
• THOMAS, ISAIAH (1749-1831)
• THOMAS, PIERRE (1634-1698)
• THOMAS, SIDNEY GILCHRIST (1850-1885)
• THOMAS, ST
• THOMAS, THEODORE (1835-1905)
• THOMAS, WILLIAM (d. 1554)

THOMAS See also:

• DRUMMOND, HENRY (1786-r86o)
• DRUMMOND, HENRY (1851-1897)
• THOMAS DRUMMOND (r797-1840)
• DRUMMOND, WILLIAM (1585-1649)

DRUMMOND (r797-1840)  , See also:

• BRITISH

British inventor and See also:

• ADMINISTRATOR

administrator, was See also:

• BORN, IGNAZ, EDLER VON (1742–1791)

born at See also:

• EDINBURGH

Edinburgh on the loth of . See also:

• OCTOBER

October 1797, and was educated at the high school there . He was appointed to a cadetship at the Royal Military See also:

• ACADEMY, GREEK
• ACADEMY, ROYAL

Academy, See also:

• WOOLWICH

Woolwich, in 1813; and in 1815 he entered the Royal See also:

• ENGINEERS, MILITARY

Engineers . In 1819, when meditating the renunciation of military service for the See also:

• BAR
• BAR (0. Fr. barre, Late Lat. barra, origin unknown)
• BAR, CONFEDERATION OF
• BAR, FRANCOIS DE (1538-1606)
• BAR, THE

bar, he made the acquaintance of See also:

• COLONEL (derived either from Lat. column, Fr. colonne, column, or Lat. corona, a crown)

Colonel T . F . See also:

• COLBY, THOMAS FREDERICK (1784-1852)

Colby (1784-1852), from whom in the following See also:

• YEAR

year he received an See also:

• APPOINTMENT, POWER OF

appointment on the trigonometrical survey of See also:

• GREAT

Great See also:

• BRITAIN (Gr. Hperavuml vi7vot, Bperravia; Lat. Britannia, rarely Britannia)

Britain . During his winters in See also:

• LONDON

London he attended the chemical lectures of W . T . See also:

• BRANDE, WILLIAM THOMAS (1788-1866)

Brande and M . See also:

• FARADAY, MICHAEL (1791-1867)

Faraday at the Royal Institution, and the mention at one of these of the brilliant luminosity of See also:

• LIME
• LIME (O. Eng. lim, Lat. limes, mud, from linere, to smear)

lime when incandescent suggested to him the employment of the lime See also:

• LIGHT

light for making distant See also:

• SURVEYING

surveying stations visible . In 1825, when he was assisting Colby in the Irish survey, his lime-light apparatus (" See also:

• DRUMMOND, HENRY (1786-r86o)
• DRUMMOND, HENRY (1851-1897)
• DRUMMOND, THOMAS (r797-1840)
• DRUMMOND, WILLIAM (1585-1649)

Drummond light ") was put to a See also:

• PRACTICAL

practical test, and enabled observations to be completed between Divis See also:

• MOUNTAIN (0. Fr. montaigne; popular Lat. montanea, an adjectival form from the classical mons, montis, whence Eng. " mount," a form usually used along with the name of an individual mountain, e.g. Mt Everest)
• MOUNTAIN, THE (La Montagne)

mountain, near See also:

• BELFAST

Belfast, and Slieve Snaght, a distance of 67 m . About the same See also:

• TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
• TIME, MEASUREMENT OF
• TIME, STANDARD

time he also devised an improved See also:

• HELIOSTAT (from Gr. rtXtor, the sun, vrares, fixed, set up)

heliostat, and in 1829 he was employed in adopting his light for lighthouse purposes .

In 1831 he entered See also:

• POLITICAL

political See also:

• LIFE

life and was appointed See also:

• SUPERINTENDENT

superintendent of the boundary See also:

• COMMISSION (from Lat. commissio, committere)

commission . Four years later he was made under-secretary of See also:

• STATE
• STATE, GREAT OFFICERS OF

state for See also:

• IRELAND
• IRELAND, CHURCH
• IRELAND, CHURCH OF
• IRELAND, JOHN (1761-1842)
• IRELAND, JOHN (1838- )
• IRELAND, WILLIAM HENRY (1777-1835)

Ireland, where he proved himself a most successful administrator, and did much to promote See also:

• LAW
• LAW (0. Eng. lagu, M. Eng. lawe; from an old Teutonic root lag, " lie," what lies fixed or evenly; cf. Lat. lex, Fr. loi)
• LAW, JOHN (1671—1729)
• LAW, WILLIAM (1686-1761)

law and See also:

• ORDER
• ORDER (through Fr. ordre, for earlier ordene, from Lat. ordo, ordinis, rank, service, arrangement; the ultimate source is generally taken to be the root seen in Lat. oriri, rise, arise, begin; cf. " origin ")
• ORDER, HOLY

order . It was he who in 1838 told the Irish landlords that " See also:

• PROPERTY

property has its duties as well as its rights." In 1836 he proposed the appointment of a commission on See also:

• RAIL

rail-ways in Ireland, and took a Iarge See also:

• SHARE (O. Eng. scearu, chiefly in compounds, e.g. land-scearu, a share of land, from sceran to cut; cf. " shear" )

share in its See also:

• WORK

work, which resulted in the recommendation, not, however, carried out, that the state should construct a See also:

• SYSTEM

system of lines throughout the See also:

• ISLAND (O.E. ieg =isle, +land')

island . Drummond's See also:

• HEALTH

health was undermined by overwork, and he died at See also:

• DUBLIN

Dublin on the 15th of See also:

• APRIL

April 1840 . See Life by J . F . M'Lennan (1867) ; Life and Letters by R . See also:

• BARRY
• BARRY, ELIZABETH (1658—1713)
• BARRY, JAMES (1741—1806)
• BARRY, SIR CHARLES (1795-1860)
• BARRY, SIR REDMOND (1813-188o)
• BARRY, SPRANGER (1719-1777)

Barry O'Brien (1889); and See also:

• SIR

Sir T . A . Larcom in Papers on the Duties of the Royal Engineers, vol. iv . (1840) .