CARLINGFORD, 7 m. E. of Dundalk, of great antiquity, seated on a bay 3 m. in length, capable of receiving the largest vessels; but yet so full of rocks as to be extremely dangerous. But even these rocks are advantageous to the epicurist, for here he will find the finest green-finned oysters, long so celebrated among the lovers of good eating. When first founded, it consisted entirely of castles, or fortified mansions, erected for the protection of the English Pale against the incursions of the unconquered northern Septs. The principal Castle has been attributed to King John, or perhaps to De Courcy; very well situated to defend a narrow pass at the foot of the mountains close by the sea, where only a few men can march abreast, as there are most dangerous rocks washed by the sea on one side, whilst the other consists of lofty mountains almost impassable. The Castle itself is now a mere mass of ruins, triangular in its shape, and seated on a solid rock, with walls 11 feet in thickness. On the S. side enough remains to mark the ancient apartments. The view from it is extremely fine, with the ocean on one side, and on the other the lofty mountains of Mourne, which present a sublime spectacle. At the S. side of the town are the picturesque ruins of an ancient Dominican Abbey, founded by De Burgh, earl of Ulster, in the 14th century. Of this abbey little remains but the Ch., whose ivyed towers and battlemented walls present a very interesting object, much heightened by the surrounding romantic mountain scenery. See the lime-quarry, 1/4 m. distant, at the foot of a high mountain, mixed with basaltes, crystallizations of pyrites, shells, &c. From the situation of the town, the sun is lost several hours behind the hills after sunrise and before sunset. CASTLE BELLINGHAM, 7 m. S. of Dundalk, is seated on an extensive but shallow bay; pleasant village, with good Inn. Good station for the sportsman, plenty of aquatic wild fowl. See at Greenmount, curious earth-works on summit of hill, with a tumulus: prospect extensive.