Merion'eth, a triangular county of North Wales, with a maximum length and breadth of 45 miles by 30, a seaboard on Cardigan Bay of 38 miles, and an area of 602 sq. m., or 385,219 acres, is bounded by the counties of Carnarvon, Denbigh, and Montgomery. Pop. (1801) 27,506; (1881) 52,038; (1901) 49,149. The surface is rugged and mountainous, interspersed with picturesque valleys, lakes, and waterfalls. Aran Mowddy (2970 feet), Cader Idris (q.v., 2914), and Aran Benllyn (2902) are the highest peaks; Bala is the largest lake; whilst of rivers the principal are the Dee, Dovey, and Mawddach. The soil generally is poor, and large tracts are unfit for profitable cultivation. Sheep are bred, and flannels and woollens manufactured, but the principal wealth of the county arises from its mineral products. Slate and limestone are largely quarried, much manganese ore is produced, and gold has been mined in the vicinity of Dolgelly and Bala. Merioneth is divided into five hundreds, and thirty-three civil parishes, partly in the diocese of Bangor, and partly in that of St Asaph. It returns one member. The principal towns are Dolgelly, Bala, Barmouth, Corwen, Festiniog, Harlech, and Towyn.