Ahmednag′ar, a town of India, presidency of Bombay, in district of its own name, surrounded by an earthen wall; with manufactures of cotton and silk cloths. Near the city is the fort, built of stone and 1½ miles round. Pop. (including military) 42,032.—Area of district, 6645 sq. miles; pop. 945,305.

Ahmed Shah, born 1724, died 1773, founder of the Durâni dynasty in Afghanistan. On the assassination of Nadir he proclaimed himself shah, and set about subduing the provinces surrounding his realm. Among his first acts was the securing of the famed Koh-i-noor diamond, which had fallen into the hands of his predecessor. He crossed the Indus in 1748, and his conquests in Northern India culminated in the defeat of the Mahrattas at Panipat (6th Jan., 1761). Affairs in his own country necessitated his withdrawal from India, but he extended his empire vastly in other directions far beyond the limits of modern Afghanistan. He was succeeded by his son Timur.

Ahriman (ä′ri-man; in the Zend Angromainyus, 'spirit of evil or annihilation'), according to the dualistic doctrine of Zoroaster, the origin or the personification of evil, sovereign of the Devas or evil spirits, lord of darkness and of death, being thus opposed to Ormuzd (Ahuramazda), the spirit of good and of light.

Ah′waz, a small Persian town on the River Karun, province of Khuzistan, at the head of river navigation, a place of some commercial note. In the neighbourhood are the vast ruins of a city supposed to date from the time of the Parthian Empire.

Ai (ä′ē). See Sloth.

Aid, a subsidy paid in ancient feudal times by vassals to their lords on certain occasions, the chief of which were: when their lord was taken prisoner and required to be ransomed, when his eldest son was to be made a knight, and when his eldest daughter was to be married and required a dowry. From the Norman Conquest to the fourteenth century the collecting of aids by the Crown was one of the forms of taxation, being afterwards regulated by Parliament.

Ai′dan, Saint, Bishop of Lindisfarne, was originally a monk of Iona, in which monastery Oswald I, who became king of Northumberland in 635, had been educated. At the request of Oswald, Aidan was sent to preach Christianity to his subjects, and established himself in Lindisfarne as the first Bishop of Durham. He died in 651.

Aide-de-camp (ād-dė-ka˙n˙), a military officer who conveys the orders of a general to the various divisions of the army on the field of battle, and at other times acts as his secretary and general confidential agent.

Aidin (a˙-i-dēn′), or Guzel Hissar, a town in Asia Minor, about 60 miles south-east of Smyrna, with which it is connected by rail; has fine mosques and bazaars, is the residence of a pasha, and has an extensive trade in cotton, leather, figs, grapes, &c. Pop. 35,000.

Aigrette′ (French), a term used to denote the feathery crown attached to the seeds of various plants, such as the thistle, dandelion, &c. (called in botany pappus).—It is also applied to any head-dress in the form of a plume, whether composed of feathers, flowers, or precious stones.