[Hahn-Hahn, Ida], a German authoress of aristocratic birth and prejudice, who, on the dissolution of an unhappy marriage, sought consolation in travel, and literature of a rather sickly kind (1805-1880).

[Hahnemann, Samuel], a German physician, the founder of [Homoeopathy] (q. v.), born at Meissen; established himself in practice in Dresden on orthodox lines and enjoyed a high reputation, but retired to revise the whole system of medicine in vogue, of which he had begun to entertain misgivings, and by various researches and experiments came to the conclusion that the true principle of the healing art was similia similibus curantur, "like things are cured by like," which he announced as such to the medical world in 1796, and on which he proceeded to practise first in Leipzig and finally in Paris, where he died (1755-1843).

[Haidee], a beautiful Greek girl in "Don Juan," who, falling in love with the hero and losing him, came to a tragic end.

[Haiduk] or Hajduk (i. e. cowherd), a name bestowed on a body of irregular infantry in Hungary who kept up a guerilla warfare in the 16th century against the Turks; in 1605 a stretch of territory on the left bank of the Theiss was conferred upon them, together with a measure of local government and certain other privileges; but in 1876 their territory was incorporated in the county of Hajdu; the name was in later times applied to the Hungarian infantry and to noblemen's retainers.

[Hailes, Lord, Sir David Dalrymple], Scottish judge and antiquary, born at Edinburgh; was called to the Scotch bar in 1748, and raised to the bench in 1768; ten years later he became a justiciary lord; he devoted his vacations to literary pursuits, and a series of valuable historical works came from his pen, which include "Annals of Scotland from Malcolm III. to Robert I." and "Annals of Scotland from Robert I. to the Accession of the House of Stuart," "A Discourse on the Gowrie Conspiracy," &c. (1726-1792).

[Haileybury College], lies 2 m. SE. of Hertford; was founded in 1809 by the East India Company as a training institution for their cadets, and was in use till 1858, when the company ceased to exist; in 1862 it was converted into a public school.

[Hainan] (2,500), an island of China, in the extreme S., between the Gulf of Tongking and the China Sea, 15 m. S. of the mainland; agriculture is the staple industry; the mountainous and wooded interior is occupied by the aboriginal Les.

[Hainault] (1,082), a southern province of Belgium bordering on France, between W. Flanders and Namur; the N. and W. is occupied by fertile plains; the Forest of Ardennes extends into the S., where also are the richest coal-fields of Belgium; iron and lead are wrought also; the chief rivers are the Scheldt, Sambre, Dender, and Haine; textiles, porcelain, and iron goods are manufactured; Mons is the capital.

[Hakim] or Hakem, a Mohammedan name for a ruler, a physician, or a wise man.

[Hakim Ben Allah] or Ben Hashem, surnamed Mokanna (i. e. the Veiled or the One-Eyed); the founder of a religious sect in Khorassan, Persia, in the 8th century; he pretended to be God incarnate, and wore over his face a veil to shroud, as his followers believed, the dazzling radiance of his countenance, but in reality to hide the loss of an eye, incurred in earlier years when he had served as a common soldier; the sect was after fierce fighting suppressed by the Caliph, and Hakim is said to have flung himself into a vessel of powerfully corrosive acid in the hope that, his body being destroyed, a belief in his translation to heaven might spread among his followers; the story of Hakim is told in Moore's "Lalla Rookh."