Meaux. A town of France, in the department of the Seine-et-Marne, 23 miles northeast from Paris. After a siege of several months, this place was taken by the English in 1520.

Mecca. A city of Arabia, capital of the province of Hejaz, and of the district Belud-el-Haram. This was the birthplace of Mohammed, and the cradle of the Mussulman creed. In 1804 and 1807, it was taken by the Wahabees, and in 1818, by Ibrahim Pasha.

Mechanical Manœuvres. The application of the mechanical powers in mounting, dismounting, shifting, and transporting artillery.

Mechanical Powers. Certain simple machines, such us the lever and its modifications, the wheel and axle, the pulley, the inclined plane with its modifications, the screw, and the wedge, which convert a small force acting through a great space into a great force acting through a small space, or vice versa, and are used separately or in combination.

Mechanics. That science, or branch of applied mathematics, which treats of motion, and develops the effects of powers or moving forces, so far as they are applied to machines.

Mechanicsville. In Henrico Co., Va. Near here, on the left bank of the Chickahominy, on the east side of Beaver Dam Creek, a battle was fought on June 26, 1862, between the Confederate forces, under Gen. Lee, and the Federal troops, under Gen. McClellan, in which the former were compelled to retreat with great loss. The fight was mainly sustained on the Federal side by the brigades of Gens. Reynolds and Seymour, and lasted about seven hours, during the greater part of which time the Federal artillery kept up a destructive fire on the enemy as they essayed to charge the lines, each successive attempt only ending in renewed disaster. Their loss was said to be about 3000, while that of the Federals did not exceed 300.

Mechlin, or Malines. A town of Belgium, in the province of Antwerp, situated on the Dyle. It was founded in the 6th century; destroyed by the Normans in 884; sacked by the Spaniards, 1572; taken by the Prince of Orange, 1578, and by the English, 1580; frequently captured in the 17th and 18th centuries, partaking in the evil fortunes of the country.

Mecklenburg. Formerly a principality in Lower Saxony, now independent as the two grand duchies of Mecklenburg-Schwerin and Mecklenburg-Strelitz. The house of Mecklenburg claims to be descended from Genseric the Vandal, who ravaged the Western empire in the 5th century, and died, 477. During the Thirty Years’ War, Mecklenburg was conquered by Wallenstein, who became its duke, 1628; it was restored to its own duke, 1630. After several changes, the government was settled in 1701 as it now exists in the two branches of Schwerin and Strelitz. In 1815 the dukes were made grand dukes, and they joined the new North German Confederation by treaty, August 21, 1866.

Medal. Is a piece of metal in the form of a coin, struck to commemorate some remarkable event, or in honor of some distinguished person, but having no place in the currency. Medals belong to two periods, ancient and modern, separated by a wide interval. To the former belong those pieces issued in ancient Rome, known as medallions, and made of gold, silver, or copper. They are generally supposed to have been struck on occasions similar to those on which medals are coined in modern times, on the accession of an emperor, on the achievement of an important victory, or as specimens of workmanship. Modern medals date from the 14th century, but few were struck prior to the 15th. In more recent times, it has become customary to confer medals as marks of distinction for eminent worth or noble conduct, but more particularly for naval or military services. Such medals of honor are seldom of great intrinsic value, their worth depending on the associations connected with them. During the Revolutionary war Congress conferred these marks of honor on several military and naval heroes, who distinguished themselves by their valor or achievements during that eventful period. In the U. S. service, at present, bronze medals of honor are conferred on enlisted men in the army, navy, and marine corps for gallantry in action, or extraordinary heroism in the line of their duties. In the English military service, similar medals are granted. They are generally of silver, and have ribbons attached, with clasps or small bars, each of which bears the name of a particular engagement. Good-service medals of silver are also distributed among meritorious soldiers, sailors, and marines.

Medals of Honor. See [Medals].