ALCAYDE, or ALCALDE, in the polity of the Moors, Spaniards, and Portuguese, a magistrate or officer of justice, answering nearly to the French provost and the British justice of peace. The alcald among the Moors is vested with supreme jurisdiction, both in civil and criminal cases.

ALCALA de Guadeira, a small town of Spain, in Andalusia, upon the river Guadeira. Here are abundance of springs, from whence they convey water to Seville by an aqueduct. Long. 6. 16. W. Lat. 37. 15. N.

Alcala de Henares, a city of Spain, in the province of New Castile. It is celebrated for its university, which is considered the best ecclesiastical school in the kingdom. It was founded by Cardinal Ximenes; and one of its first and best productions has been the Complutensian edition of the Holy Scriptures, which was prepared here. The river Henares runs by the city, and gives its distinguishing name. Here is also a military school for the artillery and engineer corps; 1600 houses, 4760 inhabitants. Its powder-mills produce 15 cwt. annually.

Alcala-Real, a small city of Spain, in Andalusia, with a fine abbey. It is built on the top of a high mountain, in a mountainous country, nine leagues from Jaen. It bears the title of a city, and contains a rich abbey and a population of 8000 or 9000. Long. 4. 15. W. Lat. 37. 18. N.