[Orange River] or Gariep, chief river of South Africa, rises in the eastern highlands of Basutoland, and flows 100 m. westward to the Atlantic, receiving the Vaal and the Caledon as tributaries, and having Cape Colony on the S. bank and the Orange Free State, Griqualand West, Bechuanaland, and German Namaqualand on the N.; a bar at the mouth and the aridity of its lower course make it unfit for navigation.
[Orange River Colony], formerly Orange Free State (380), lying between the Vaal and the Orange Rivers, Griqualand West, and the Drakenberg Mountains; has an area nearly the size of England, with a healthy, temperate climate; undulating plains slope northward and southward, from which rise isolated hills called kopjes. The chief industries are the rearing of sheep, cattle, horses, and ostriches; coal-mining in the N. and diamond-seeking in the SW.; the exports comprise wool, hides, and diamonds. Founded by Dutch Boers from Natal, it was annexed by Britain in 1848, but granted independence in 1854. The capital, Bloemfontein (3), is connected by a railway with Johannesberg and with the Cape. Having made common cause with the South African Republic in the Boer War, it was annexed by Great Britain in 1900. At present (1905) it is under the supreme authority of the Governor of Orange River and the Transvaal Colonies, assisted by a Lieutenant-Governor and an Executive Council.
[Orangemen], a name given to an association of Protestants in Ireland instituted to uphold the Protestant succession to the crown, and the Protestant religion as settled at the Revolution of 1688, and which derives this name from William, the Prince of Orange, on whose accession to the throne Protestantism was established; it became dormant for a time after its institution, but it has shown very decided signs of life at political crises when Protestantism seemed in danger, such as often to call for some firm handling.
[Oratorio], a musical composition on a sacred theme, dramatic in form and associated with orchestral accompaniments, but without scenic accessories; it derives its name from the oratory of St. Philip Neri at Rome, in which a composition of the kind was first performed, and was a musical development of the [miracle plays] (q. v.).
[Oratory, Congregation of the], community of secular priests formed by [St. Philip of Neri] (q. v.), and bound by no religious vow, each one of which is independent of the others; it consists of novices, triennial fathers, decennial fathers, and a superior, their functions being to preach and hear confession.
[Orcagna], a Florentine painter, sculptor, and architect, did several frescoes; was architect of the cathedral of Orviëto; his masterpiece an absolutely unique marble tabernacle in the church of Or San Michele, Florence (1329-1389).
[Orchardson, William Quiller], English genre-painter, born in Edinburgh; his pictures are numerous, and among the best and most popular, "The Challenge," "The Queen of the Woods," "On Board the Bellerophon," "The Mariage de Convenance"; b. 1835.
[Orcus] (i. e. place of confinement), another name for Hades, or the "World of the Dead"; also of the god of the nether world.
[Ordeal], a test by fire, water, poison, wager of battle, or the like, of the innocence or guilt of persons in appeal thereby to the judgment of God in default of other evidence, on the superstitious belief that by means of it God would interfere to acquit the innocent and condemn the guilty, a test very often had recourse to among savage or half-civilised nations.
[Ordericus Vitalis], a mediæval chronicler, born near Shrewsbury; was a monk of the Abbey of St. Evreul, in Normandy; wrote an ecclesiastical history of Normandy and England—a veracious document, though an incondite; d. 1143.