BALLYSHANNON, about 10 m. W. of Donnegal,--presents some pleasing scenery of beautiful landscapes, swelling hills cultivated, and with the bay flowing up between them. These hills are extremely picturesque, rising into various outlines, and dying away insensibly into one another. See Bridge of 14 arches; also the Salmon-leap, surrounded by most romantic scenery; a fine fall of water; perpendicular rocks forming the banks of the river, with bold views of the sea. Here also are some ruins of the once famous Castle of the O'Donnels, the turbulent feudal chieftains of Tyrconnel; and 1/2 m. distant, in a secluded but finely picturesque situation, the ruins of Asheroe Abbey. In the vicinity several Danish Raths. Belleek is a pretty village, 8 m. E. of Ballyshannon, and at the end of Lough Erne, whose waters here form two fine cataracts under perpendicular and well wooded rocks. Several handsome seats, particularly Castle Caldwell on the Lough, with ruins of several ancient Castles; but in Fermanagh. DONNEGAL, the county town, is a decayed town 111 m. N.W. from Dublin.--It contains little worth notice, except an ancient castellated mansion of the Earls of Arran, which with the river and bridge is considered by Sir R. C. Hoare as forming a good subject for the pencil. Near it are the remains of a Franciscan Abbey (1505) in a most picturesque situation. See spacious market-place; mill-stone quarries in vicinity. The finest view of the Bay is from the bridge of Imber, whence towards the right is seen a lofty but distant mountain, with cultivated fields in the foreground: at the foot of another mountain a gentleman's seat with well grown plantations strikes the eye; and to the left the scene is diversified by a sand bank thrown up by the sea, and a high ridge of plantation on the western side of the river, with the bay appearing beyond it or seen through its waving interstices. Barnmoor pass is highly awful and grand, leading towards Lough Esk, about a quarter of a mile wide and 3 m. long, formed by mountains rising high on each side of a deep glen covered with heath, and frowning in deathlike silence. Lough Derg, 6 m. E. is remarkable for its Purgatory; founded as reported by St. Patrick, in a small island about 130 yards long and 50 broad. The Purgatory itself consists of a cave 16-1/2 feet long by 2 wide, so very low that a tall man cannot stand erect in it. Around it are the remains of several Chapels and holy circles dedicated to various saints of both sexes. Lough Esk lies at the head of the valley which communicates with Donnegal, and at the foot of the magnificent Ross Mountains; round it the scenery is sometimes awfully sublime, and sometimes rich and cheerful. The sportsman will find red deer on the hills, and char in the lake.