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 a height of 9 or 10 in., and whence the body tapers towards both extremities. The forehead descends abruptly to the base of the slightly flattened beak, which is about 6 in. long, and is separated from the forehead by a transverse depression. The mouth is armed with sharp, slightly curved teeth, of uniform size, varying in number from forty to fifty on each side of both jaws. The aperture of the ear is exceedingly minute; the eyes are of moderate size and the blow-hole is crescent-shaped. The colour of the upper surface is black, becoming lighter on the flanks, and perfectly white below. Dolphins are gregarious, and large herds often follow ships. They exhibit remarkable agility, individuals having been known to leap to such a height out of the water as to fall upon the deck. Their gambols and apparent relish for human society have attracted the attention of mariners in all ages, and have probably given rise to the many fabulous stories told of dolphins. Their appearance at sea was regarded as a good omen, for although it presaged a tempest, yet it enabled the sailors to steer for a place of safety. The dolphin is exceedingly voracious, feeding on fish, cuttlefishes and crustaceans. On the south coast of England it lives chiefly on pilchard and mackerel, and when in pursuit of these is often taken in the nets. The female brings forth a single young one, which she nurses most carefully. Her milk is abundant and rich, and during the operation of suckling, the mother floats in a slightly sidelong position, so as to allow of the necessary respiration in herself and her young. The dolphin was formerly supposed to be a fish, and allowed to be eaten by Roman Catholics when the use of flesh was prohibited, and it seems to have been esteemed as a delicacy by the French. Among the seafaring population of Britain the name “dolphin” is most usually given to the beautifully coloured fish Coryphaena hippuris—the dorado of the Portuguese, and it is to the latter the poet is alluding when he speaks of “the dying dolphin’s changing hues.”

Many other allied genera, such as Prodelphinus, Steno, Lagenorhynchus, &c., are also included in the family Delphinidae, some of which live wholly in rivers.

Beside these there is another group of largely freshwater species, constituting the family Platanistidae, and typified by the susu (Platanista gangetica), extensively distributed throughout nearly the whole of the river-systems of the Ganges, Brahmaputra and Indus, ascending as high as there is water enough to swim in, but never passing out to sea. It is about 8 ft. long, blind and feeds on small fish and crustaceans for which it gropes with its long snout in the muddy waters at the bottom. Inia geoffroyensis, the single species of its genus, frequents the Amazon, and reaches an extreme length of 8 ft. It is wholly pink or flesh-coloured, or entirely black, or black above and pink beneath. A third is the La Plata dolphin, Stenodelphis blainvillei, a species about 5 ft. in length. Its colour is palish brown, which harmonizes with the brown-coloured water of the estuary of the Rio de la Plata. See.

 DOMAT, or, JEAN (1625–1696), French jurisconsult, was born at Clermont in Auvergne, on the 30th of November 1625. He was closely in sympathy with the Port-Royalists, was intimate with Pascal, and at the death of that celebrated philosopher was entrusted with his private papers. He is principally known from his elaborate legal digest, in three volumes 4to, under the title of Lois civiles dans leur ordre naturel (1689),—an undertaking for which Louis XIV. settled on him a pension of 2000 livres. A fourth volume, Le Droit public, was published in 1697, a year after his death. This is one of the most important works on the science of law that France has produced. Domat endeavoured to found all law upon ethical or religious principles, his motto being L’homme est fait par Dieu et pour Dieu. Besides the Lois Civiles, Domat made in Latin a selection of the most common laws in the collections of Justinian, under the title of Legum delectus (Paris, 1700; Amsterdam, 1703); it was subsequently appended to the Lois civiles. His works have been translated into English. Domat died in Paris on the 14th of March 1696.

 DOMBES, a district of eastern France, formerly part of the province of Burgundy, now comprised in the department of Ain, and bounded W. by the Saône, S. by the Rhone, E. by the Ain and N. by the district of Bresse. The region forms an undulating plateau with a slight slope towards the north-west, the higher ground bordering the Ain and the Rhone attaining an average height of about 1000 ft. The Dombes is characterized by an impervious surface consisting of boulder clay and other relics of glacial action. To this fact is due the large number of rain-water pools, varying for the most part from 35 to 250 acres in size which cover some 23,000 acres of its total area of 282,000 acres. These pools, artificially created, date in many cases from the 15th century, some to earlier periods, and were formed by landed proprietors who in those disturbed times saw a surer source of revenue in fish-breeding than in agriculture. Disease and depopulation resulted from this policy and at the end of the 18th century the Legislative Assembly decided to reduce the area of the pools which then covered twice their present extent. Drainage works were continued, roads cut, and other improvements effected during the 19th century. Large numbers of fish, principally carp, pike and tench are still reared profitably, the pools being periodically dried up and the ground cultivated.

The Dombes (Lat. Dumbae) once formed part of the kingdom of Arles. In the 11th century, when the kingdom began to break up, the northern part of the Dombes came under the power of the lords of Baugé, and in 1218, by the marriage of Marguerite de Baugé with Humbert IV. of Beaujeu, passed to the lords of Beaujeu. The southern portion was held in succession by the lords of Villars and of Thoire. Its lords took advantage of the excommunication of the emperor Frederick II. to assert their complete independence of the Empire. In 1400, Louis II., duke of Bourbon, acquired the northern part of the Dombes, together with the lordship of Beaujeu, and two years later bought the southern part from the sires de Thoire, forming the whole into a new sovereign principality of the Dombes, with Trévoux as its capital. The principality was confiscated by King Francis I. in 1523, along with the other possessions of the Constable de Bourbon, was granted in 1527 to the queen-mother, Louise of Savoy, and after her death was held successively by kings Francis I., Henry II. and Francis II., and by Catherine de’ Medici. In 1561 it was granted to Louis, duke of Bourbon-Montpensier, by whose descendants it was held till, in 1682, “Mademoiselle,” the duchess of Montpensier, gave it to Louis XIV.’s bastard, the duke of Maine, as part of the price for the release of her lover Lauzun. The eldest son of the duke of Maine, Louis Auguste de Bourbon (1700–1755), prince of Dombes, served in the army of Prince Eugene against the Turks (1717), took part in the War of the Polish Succession (1733–1734), and in that of the Austrian Succession (1742–1747). He was made colonel-general of the Swiss regiment, governor of Languedoc and master of the hounds of France. He was succeeded, as prince of Dombes, by his brother the count of (q.v.), who in 1762 surrendered the principality to the crown. The little principality of Dombes showed in some respects signs of a vigorous life; the prince’s mint and printing works at Trévoux were long famous, and the college at Thoissey was well endowed and influential.

 DOMBROWSKI, JAN HENRYK (1755–1818), Polish general, was born at Pierszowice in the palatinate of Cracow, on the 29th of August 1755. Brought up in Saxony, he served for some years in the Saxon army; but when, in 1791, the Polish diet recalled all Poles serving abroad, he returned to his native land. Under Poniatowski, he took part in the campaign of 1792 against the Russians. In 1794 he distinguished himself under Kosciusko in the defence of Warsaw. For two years thereafter he lived in retirement, declining the offers of high ranks in their armies made to him by Russia and Prussia. He then went to Paris, and in January 1797 was authorized by the government of the Cisalpine Republic to organize a Polish legion. This task he executed at