DON, a river in the south of Aberdeenshire, Scotland, rising in peat-moss to the east of Glen Avon on the borders of Banffshire, at a height of nearly 2000 ft. above the sea. It follows a generally easterly course, roughly parallel with that of the Dee, and a few miles to the south of it, falling into the North Sea close to Old Aberdeen, after a run of 82 m. At the mouth the two rivers are only 2-1/3 m. apart. Like its greater neighbour, the Don is an excellent salmon stream. On the left its chief affluents are the Ernan, Nochty, Bucket and Urie; on the right, the Conrie, Carvie, Deskry and Strow. The principal places of interest on its banks are Strathdon, Towie, Kildrummy, Alford, Keig, Monymusk, Inverurie, Kintore and Dyce.
DONAGHADEE, a market town of Co. Down, Ireland, in the north parliamentary division, near the south of Belfast Lough, on the Irish Channel, 25 m. E. by N. of Belfast by a branch of the Belfast and Co. Down railway. Pop. (1901) 2073. It is the nearest port in Ireland to Great Britain, being 21½ m. S.W. of Portpatrick in Wigtownshire. Telegraph and telephone cables join these ports, but a regular passenger route does not exist owing to the unsuitability of Portpatrick. Donaghadee harbour admits vessels up to 200 tons. On the north-east side of the town there is a rath or encampment 70 ft. high, in which a powder magazine is erected. The parish church dates from 1626. There are two holy wells in the town. The town is frequented as a seaside watering-place in the summer months.
DONALDSON, SIR JAMES (1831- ), Scottish classical scholar, educational and theological writer, was born at Aberdeen on the 26th of April 1831. He was educated at Aberdeen University and New College, London. In 1854 he was appointed rector of the Stirling high school, in 1866 rector of that of Edinburgh, in 1881 professor of humanity in the university of Aberdeen, and in 1890 principal of the university of St Andrews, by the Universities (Scotland) Act. His chief works are: _Modern Greek Grammar_ (1853); _Lyra Graeca_ (1854), specimens of Greek lyric poetry from Callinus to Soutsos; _A Critical History of Christian Literature and Doctrine from the Death of the Apostles to the Nicene Council_ (i.-iii., 1864-1866; new ed. of i. as _The Apostolical Fathers_, 1874), a book unique of its kind in England at the time of its appearance and one which adds materially to the knowledge of Christian antiquities as deduced from the apostolic fathers; _Lectures on the History of Education in Prussia and England_ (1874); _The Westminster Confession of Faith and the Thirty-Nine Articles of the Church of England_ (1905); _Woman, her position and influence in ancient Greece and Rome_ (1907). He was knighted in 1907.