CARLOW, 39 m. from Dublin,--is a neat and flourishing town, well situated for inland commerce on the river Barrow. Wakefield describes it as abounding with "houses of entertainment, for almost every shop has attached to it a house which is used as an inn." Examine its Woollen manufactures: some slight remains of its ancient Castle, which recently fell, a mere heap of ruins: the venerable old Ch., from the vicinity of which is a very extensive view, commanding a fertile and well wooded country enlivened by the majestic windings of the river Barrow: ruins of the very fine Abbey founded before the English conquest: the Roman Catholic College, an extensive building, with good gardens and a park for the students' recreation, with the Gaol, Barracks, &c. Miss Plumptre says, that "Carlow is superior to most towns in the kingdom in the neatness of its appearance:" and Hall says that "the ground about it is better improved than in many parts of England." The town and immediate vicinity present some historical recollections; and though the English tourist may not be much interested in the disputes of the Earls of Kildare and Thomond, and the predatory exploits of O'More; yet events of a later date, connected with its siege by Ireton in the civil wars, may lead to inquiry and investigation. It was also the scene of a sanguinary battle, though on a small scale, in the year 1798, being assaulted by the rebels before day-break, and successfully defended by a small party of military and the loyal yeomanry. The visitor will not omit the pleasing domain of Mr. Cavanagh, in the immediate vicinity, from whence the Blackstairs mountains form a striking object; though not lofty, yet bold, bleak, and rugged. Mr. Curwen speaks highly of the scenery in the vale between Carlow and Leighlin Bridge, with enchanting and extensive prospects over a rich country of the most sublime and picturesque features. This valley is about six miles in breadth, bounded on each side by a chain of mountains finely wooded, well inclosed, and cultivated to their summits. Villages and gentlemen's seats to be seen on all sides, with whitewashed cottages well sheltered by trees, and presenting a pleasing air of rural comfort and industry. See Ardglass, 4 m. N., a high green hill, from whence there is a most enchanting prospect of the county, and also Kildare. On its summit is an ancient Catholic Chapel, built in form of a cross, but much resembling a dilapidated barn: read some justly-flattering epitaphs to the Grace family, not badly written. At Kellystown, on the east bank of the Barrow, extensive ruins of a Ch. said to have been first erected by St. Patrick. At Staplestown 2 m. S.E. a pleasing mansion of Mr. Bagnall, once intended to rival Versailles, the grounds owing much both to nature and art, and watered by the romantic little river Burrin.