Rot – Ruffe
Rot
a disease in sheep and other graminivorous animals, produced by the hydratids Fasciola hepatica and Distoma lanceolatum, often living in great numbers in the gall-ducts and bladder of the animal. The latter parasite has been detected in the human subject.
Rotti
an island in the Indian Archipelago, belonging to the Dutch; S. W. of Timor. It is 36 miles in length (650 square miles), and has a population of 80,000. The surface, though hilly, is nowhere more than 800 feet above the sea, and the fertile soil produces a rich vegetation.
Rotumah
an island in the South Pacific, annexed to the Fiji Islands by Great Britain in 1881; distant about 300 miles N. N. W. from the nearest island of that group, of which it is a dependency; area, 14 square miles; pop. 2,300, all Christians.
Roundfish
the Salmo (coregonus) quadrilateralis. The specimen on which Sir John Richardson based his description was about 18 inches long. It is not highly prized for food.
Roundhead
a term applied by the Cavaliers or adherents of Charles I., during the Civil War of 1642, to the Puritans or adherents of the Parliamentary party, from their wearing their hair cut short, while the Cavaliers al lowed their hair to fall onto their shoul ders.
Round Table
KNIGHTS OF THE See ARTHUR; MALORY, THOMAS; MORTE D ARTHUR.
Roye
a village in the Department of the Somme, France, situated on the Avre, 26 miles S. E. S. E. of Amiens. The village was taken by the Germans soon after the invasion of France, in September, 1914, but afterward was the scene of much of the heavy fighting in that region. Pop. about 4,500.
Royston Crow
the common English name for the hooded crow, Corvus cornix. See CROW.
Ruatan
or ROATAN, an island of Central America, in the Bay of Honduras; area, about 240 square miles. Surface, fertile. The shores abound in fish and somewhat elevated and well wooded; soil, turtles, and near the S. extremity is a good harbor.
Rubace
or RUBASSE, in mineralogy: (1) Rock crystal from Brazil, inclosing red scales of hæmatite or göthite. (2) Rock crystal which, when heated and plunged into a cool colored sol comes fissured and admits the red colorsolution, being matter. (3) Rubicelle. (4) Rose< quartz.
Rubellite
in mineralogy, a red variety of TOURMALINE (q. v.), occurring in crystals mostly transparent and containing lithia.
Ruffe
in ichthyology, the Acerina cernua, from the rivers of Europe. It is olive-green, marbled and spotted with brown, and resembles the perch in habits.
The name is said to be derived from the harsh sensation caused by its ctenoid scales. a