Medeah, or Medeyah. A fortified town of Algeria, 40 miles southwest from Algiers. This town was taken by the French in 1820.

Media. In ancient times, the name of the northwestern part of Iran, which was bounded by the Caspian Sea on the north, Persia on the south, Parthia on the east, and Assyria on the west. The Medians were in language, religion, and manners very nearly allied to the Persians. After they had shaken off the yoke of the Assyrians, their tribes united about 708 B.C., chose Dejoces for their chief, and made Ecbatana their capital. His son Phraortes, or Arphaxad, subdued the Persians. Cyaxares, the son of Phraortes, in alliance with Nabopolassar, king of Babylon, overthrew the Assyrian empire about 604 B.C., spread the terror of his arms as far as Egypt and the farthest bounds of Asia Minor, and vanquished the brigand hordes of Scythia, who had carried their ravages as far as Syria. He was succeeded by his son Astyage, who was deposed (560 B.C.) by his own grandson Cyrus, king of Persia; and from this time the two nations are spoken of as one people. After the death of Alexander the Great (324 B.C.), the northwest portion of Media became a separate kingdom, and existed till the time of Augustus; the other portion, under the name of Great Media, forming a part of the Syrian monarchy. Media was on several occasions separated from Persia. In 152 B.C., Mithridates I. took Great Media from the Syrians, and annexed it to the Parthian empire, and about 36 B.C., it had a king of its own, named Artavasdes, against whom Mark Antony made war. Under the Sassanian dynasty, the whole of Media was united to Persia. It became, during the 14th and 15th centuries, the stronghold of the Turkoman tribes. In early times the Medes were a warlike race, and were distinguished for their skill with the bow. They were also celebrated for their horsemanship, and it was from them that the Persians adopted this and other favorite exercises and acquirements. In subsequent times, they appear to have become effeminated by luxury.

Mediator. Any state or power which interferes to adjust a quarrel between any two or more powers, is called a mediator.

Medical Department. This department of an army, next to the commissariat, is the most important of all the non-combatant sections. The surgical treatment of the wounded in actual fighting, and still more the combat with disease engendered by crowding, unhealthy stations, and the reckless habits of the soldiery, necessitate a large medical staff; for, on an average of the whole army, it is found that the rate of sickness is at least quadruple that for the civil population. In the British army every battalion, when at home or in the temperate zone, has a surgeon and an assistant-surgeon; when in India or the tropics, another assistant-surgeon is added. The medical department is governed by a director-general, who is a member of the War Office, and has charge of the surgical, medical, and sanitary arrangements of the army. In the United States every military post has at least one medical officer and sometimes two, as the nature of the climate or the strength of the command demands, all of whom are under the command of a surgeon-general, who ranks as brigadier-general, and is permanently established at Washington, D. C. He has full control over everything that pertains to the medical department of the army. Officers of the medical department are assistant-surgeons, with the rank of first lieutenants of cavalry the first five years of their service thereafter, till promoted to the grade of surgeon, when they receive the rank, pay, and emoluments of captain.

Medical Director. In the U. S. service, an officer who is placed on duty at the headquarters of a military geographical division or department, and who, under the supervision of the surgeon-general, has control of the medical department within the limits of the command in which he is serving.

Medical School. At Netley, England, an institution is established for the technical education of medical officers for the British and Indian military service. Candidates are examined competitively in the ordinary subjects of professional knowledge; and, passing satisfactorily through that ordeal, are then required to attend for six months at the Military Medical School. As the school is attached to the Royal Victoria Hospital, which is the great invalid depot for the whole army, the students have ample opportunity of seeing theory exemplified in practice.

Medical Staff. This branch of the British army is under the control of an experienced officer, stationed at headquarters, under the denomination of “director-general.” Immediately under his command are a number of inspectors-general, deputy inspectors-general, and a corps of staff-surgeons. The locality of all the officers subordinate to the director-general is determined by the force to which they may be attached. All the regimental surgeons and assistant-surgeons make their reports to and consult the staff-officer who is placed in their district. The director-general is paid from the civil department of the government. A deputy inspector-general of hospitals must have served five years at home, or three years abroad in this rank, before he shall be eligible to the highest rank of inspector-general.

The medical board consists of three or four medical officers, who may be convened by an order through the Secretary of War, for the inspection of wounded officers, in order to secure them a provision for life, according to the regulations regarding pensions, etc.

Medicine-chest. Is composed of all sorts of medicines necessary for a campaign, together with such chirurgical instruments as are useful, fitted up in chests and portable. The army is supplied with these at the expense of the government.

Medina. Or more fully, Medinat Al Nabi (City of the Prophet), the holiest city throughout Mohammedanism next to Mecca, and second capital and stronghold of Hedjaz in Western Arabia. In this city Mohammed was protected when he fled from Mecca, September 13, 622, others say July 15, 622. (See [Hegira].) Medina was taken by the Wahabees in 1804; retaken by the pasha of Egypt in 1818.