a city of Arabia Felix, the capital of the province of Hadramut, situated in E. long. 50° 36', N. lat. 16°, three hundred and sixty miles north-east of Mecho.

HÆMAGOGOS, among physicians, a compound medicine consisting of fetid and aromatic simples, mixed with black heliobore; and prescribed in order to promote the menstrual and hemorrhoidal fluxes, as also to bring away the lochia.

HÆMANTHUS, in botany, a genus of the hexandria monogynia class. The involucrum is large, and consists of six leaves; the corolla is above the fruit, and divided into six parts; and the berry has three cells. There are four species, none of them natives of Britain.

HÆMATITES, or blood-stone, in natural history, an extremely rich and fine iron.

It is very ponderous, and is either of a pale red, a deeper red, or a bluish colour; usually of a very glossy surface; and when broken, of a fine and regularly striated texture; the striae converging toward the centre of the body; and the masses thereof naturally breaking into fragments of a broad base and pointed end; appearing something pyramidal. The hæmatites is various in its degrees of purity and hardness, as well as in its figure: the finest and most pure is of a botryoid surface; the whole supercies rising into larger or smaller roundish tubercles; sometimes the hæmatites is of a coarse texture, and a laxer structure, in which state it is known to many by the name schiltus.

HÆMATOPUS, the sea-pye, in ornithology, a genus belonging to the order of gallæ. The beak is compressed with an equal wedge-shaped point; the nostrils are linear; and the feet have three toes without nails. There is but one species, viz. the atralegus, a native of Europe and America. It feeds upon shell-fish near the sea shores.

HÆMATOXYLUM, campeche-wood, in botany, a genus of the decandria monogynia clas. The calyx is divided into five parts; the petals are five; the capsule is lanceolated, and contains one cell with two boat-shaped valves. There is but one species, viz. the campechianum, campechy or logwood, a native of America, near Carthagena. It is usually brought home in large logs, very hard, of a red colour, and an astringent sweet taste. It has been long used by the dyers, but not till very late as a medicine: an extracted decoction of it are said to be serviceable in diarrhoeas.

HÆMOPTOSIS, Hæmaptysis, or Hæmoptoe, in medicine, a spitting of blood. See Medicine.

HÆMORRHAGE, in medicine, a flux of blood from any part of the body. See Medicine.

HÆMORRHOIDAL, an appellation given by anatomists to the arteries and veins going to the intestinum rectum. See Anatomy, Part III. and IV.

HÆMORRHOIDS, or Piles, in medicine, an hemorrhage, or flux of blood from the hemorrhoidal vessels. See Medicine.