r General S. B. Buckner surrendered unconditionally. The
Confederate cavalry under Colonel Forrest made its escape by road. The
prisoners numbered about 15,000 out of an original total of 18,000.

DONGA, a Bantu word for a ravine, narrow watercourse or gully formed by
the action of water. Adopted by the European residents of South Africa
from the Kaffirs, the use of the word has been extended by English
writers to ravines or watercourses of the nature indicated in various
other parts of the world. It is almost equivalent to the Arabic _khor_,
which, however, also means the dry bed of a stream, or a stream flowing
through a ravine. The Indian word _nullah_ (properly a watercourse) has
also the same significance. The three words are often used
interchangeably by English writers.

DONGOLA, a _mudiria_ (province) of the Anglo-Egyptian Sudan. It lies
wholly within the region known as Nubia and extends along both banks of
the Nile from about 18 deg. N. to 20 deg. N. The rainfall is very
slight, and the area of fertility is mainly confined to the lands
watered by the Nile. Beyond stretches eastward the Nubian desert,
westward the Libyan desert. The Wadi el Kab (Gab), west of and parallel
to the Nile, contains, however, a good deal of arable land. This wadi,
which is some 63 m. long, obtains water by percolation from the Nile.
Farther west is the extensive plateau of Jebel Abiad, and beyond, some
250 m. due west of Debba, is Bir Natron, or Bir Sultan, a valley whence
natron is obtained. In this desert region is found the addax, the rarest
of Sudan antelopes. The chief grain crops are durra and barley, and date
palms are extensively cultivated. The province is also noted for a breed
of strong, hardy horses. The largest town is Dongola, but the
administrative headquarters of the mudiria are at New Merawi (Merowe,
Meroe), on the left bank of the Nile, below the 4th cataract. Other
towns, also on the Nile, are Debba and Korti, whence start caravan
routes to Kordofan and Omdurman. At Jebel Barkal, in the neighbourhood
of Merawi, and elsewhere in the mudiria, are ancient ruins (see SUDAN:
_Anglo-Egyptian_). Old Merawi, on the right bank of the Nile, and Sanam
Abu Dom, on the left bank, indicate the site of the Ethiopian city of
Napata. From Kareima, on the right or northern bank of the Nile, 6 m.
above New Merawi, a railway (opened in March 1906) runs to Abu Hamed,
whence there is railway connexion with the Red Sea, Khart