Alderney (Fr. Aurigny), a British island in the English Channel, 55 miles S. by E. of Portland Bill, 15 NE. of Guernsey, 31 N. of Jersey, and 10 W. of Cape la Hogue. The Pace of Alderney, or strait that separates it from the coast of Normandy, is very dangerous in stormy weather. The island is 4 1/4 miles by l 1/2 mile; area, 3 sq. m. The highest point is 281 feet above sea-level. To the S. the coast is bold and lofty; to the N. it descends, forming numerous small bays, one of which has been formed into a fine, though uncompleted, harbour, with a granite breakwater, at a cost, including strong fortifications, of more than £1,250,000. The Caskets are a small cluster of dangerous rocks, 6| miles to the W., on which are three lighthouses. The soil in the centre of the island is highly productive; the Alderney cattle are a small but handsome breed. Half the inhabitants, originally French, now speak English, and all understand it. Protestantism has prevailed here since the Reformation. Alder-ney is a dependency of Guernsey, and subject to the British crown. The 'town' of St Anne is situated in a picturesque valley near the centre of the island. It has an Albert memorial in the shape of a Gothic arch, and a cruciform church (1850) in the Early English style, with a tower 104 feet high. Pop. of island (1841) 1038; (1861) 4932; (1881) 2048; (1S91) 1857; (1901) 2062. See Channel Islands.