DOMINICA, or DOMINIQUE (26), the largest and most southerly of the Leeward Islands, and belongs to Britain; one-half of the island is forest, and parts of it have never been explored; was discovered by Columbus on Sunday, November 3, 1493, whence its name.

DOMINICAL LETTER, one of seven letters, A, B, C, D, E, F, G, used to mark the Sundays throughout the year, so that if A denote the first Sunday, it will denote all the rest, and so on with B, C, &c., till at the end of seven years A becomes the dominical letter again.

DOMINICAN REPUBLIC, or ST. DOMINGO (610), a republic forming the E. part of the island of Haiti, and consisting of two-thirds of it; it belonged alternately to France and Spain till 1865, when, on revolt, the Spaniards were expelled, and a republic established; the capital is St. Domingo (15), and the chief port Puerto Plata.

DOMINICANS, a religious order of preaching friars, founded at Toulouse in 1215 by St. Dominic, to aid in the conversion of the heretic Albigenses to the faith, and finally established as the order whose special charge it was to guard the orthodoxy of the Church.  The order was known by the name Black Friars in England, from their dress; and Jacobins in France, from the street of Paris in which they had their head-quarters.

DOMINIE, SAMPSON, a schoolmaster in “Guy Mannering,” “a poor, modest, humble scholar, who had won his way through the classics, but fallen to the leeward in the voyage of life.”

DOMINIS, MARCO ANTONIO DE, a vacillating ecclesiastic, born in Dalmatia; was educated by the Jesuits; taught mathematics in Padua; wrote a treatise in which an explanation was for the first time given of the phenomenon of the rainbow; became archbishop of Spalatro; falling under suspicion he passed over to England, professed Protestantism, and was made dean of Windsor; reconciled to the Papacy, returned to the Church of Rome, and left the country; his sincerity being distrusted, was cast into prison, where he died, his body being afterwards disinterred and burned (1566-1624).

DOMITIAN, Roman emperor, son of Vespasian, brother of Titus, whom he succeeded in 81, the last of the twelve Caesars; exceeded the expectations of every one in the beginning of his reign, as he had given proof of a licentious and sanguinary character beforehand, but soon his conduct changed, and fulfilled the worst fears of his subjects; his vanity was wounded by the non-success of his arms, and his vengeful spirit showed itself in a wholesale murder of the citizens; many conspiracies were formed against his life, and he was at length murdered by an assassin, who had been hired by his courtiers and abetted by his wife Domitia, in 96.

DOMREMY, a small village on the Meuse, in the dep. of Vosges; the birthplace of Joan of Arc.

DON, a Russian river, the ancient Tanais; flows southward from its source in the province of Tula, and after a course of 1153 m. falls into the Sea of Azov; also the name of a river in Aberdeenshire, and another in Yorkshire.