a province of Spain, Aragon, bounded on the N. by those of Saragossa and Huesca; E. and S. by Tarragona, Castellon-de-la-Plana, and Valencia; W. by Cuenca and Guadalajara. Area, 2363 square miles. It is intersected from east to west by the mountain-chain of Alharracin, from which several offsets diverge on either side. One of the loftiest summits of this range is that called Muela de San Juan, which is covered with snow for a great part of the year, and gives rise to several large rivers. Between the several mountain-chains, lie some broad and fertile plains. The principal rivers are the Guadalope, flowing north-eastwards into the Ebro; the Jiloca, which joins the same river by means of the Jalon; and the Guadalaviar, which flows southwards, and falls into the Mediterranean, besides several smaller streams. The chief productions of the country are corn, wine, oil, fruits, timber, flax, hemp, silk, wool, and saffron; as well as cattle, sheep, and swine. Manufactures are in a very backward state here; coarse cloth, paper, leather, soap, and pottery being almost the only articles produced. Pop. (1857) 250,616.

the capital of the above province, stands on the left bank of the Guadalaviar, 142 miles N.E. of Madrid. It has ancient walls, gates, and towers, which give it an imposing aspect; and is in general well built, but has very narrow and gloomy streets. There are here a cathedral, episcopal palace, numerous churches and convents, a theatre, hospital, and other buildings. The inhabitants are chiefly employed in agriculture. Pop. 6752.