Green; Chatham, Gladstone; Ruskin; Shelley, Keble, Arnold, and Clough.  Of the colleges of which the University consists, the University was founded in 1249, Balliol in 1269, Merton in 1264, Exeter in 1314, Oriel in 1326, Queen’s in 1340, New in 1379, Lincoln in 1427, All Souls’ in 1437, Magdalen in 1468, Brasenose in 1509, Corpus in 1516, Christ Church in 1546, Trinity in 1554, St. John’s in 1555, Jesus in 1571, Wadham in 1612, Pembroke in 1624, Worcester in 1714, Keble in 1870, and Hertford in 1874.

OXFORDSHIRE (186), a S. midland county of England, stretching on the N. bank of the Thames between Gloucester and Buckingham; is an agricultural district; bleak in the N. and W., it is hilly, well wooded and picturesque in the S., where are the Chiltern Hills; iron-stone is mined near Banbury, blankets made at Witney, and paper at Shiplake and Henley; natives of the county were Edward the Confessor, Leland, Warren Hastings, Maria Edgeworth, and J. R. Green.

OXUS or AMU-DARIA, a great river of Central Asia, rises in the Pamirs, and flows W. between Turkestan and Afghanistan, then N. through Turkestan to the Sea of Aral; it is believed at one time to have flowed into the Caspian, and there is record of two changes of course; half its waters are absorbed in irrigating the plains of Khiva.

OXYGEN, a colourless, inodorous gas which constitutes one-fifth in volume of the atmosphere, and which, in combination with hydrogen, forms water.  It is the most widely diffused of all the elementary bodies, and an essential support to everything possessed of life.

OYER AND TERMINER, an English Court Commission to hear and determine special causes.

OZONE, is an allotropic form of oxygen, from which it can be developed by electricity, and into which it can be resolved by heat, present in small quantities in the atmosphere, and possessing strong oxidising properties.

P

PACHE, JEAN, Swiss adventurer, who became Mayor of Paris, and even Minister of War during the French Revolution, “the sleek Tartuffe that he was,” is credited with the authorship of the famous revolutionary motto, Liberty, Equality, and Fraternity, or Death (1746-1823).

PACHOMIUS, ST., an Egyptian hermit, the founder of conventual monachism, who established the first institution of the kind at Tabenna, an island in the Nile; he also established the first nunnery under his sister (292-348).  Festival, May 14.

PACHYDERMATA, hoofed animals with thick skins and non-ruminant, such as the elephant and the hog.