GARTH, a hamlet, in the parish of LLANVABON, hundred of CAERPHILLY, county of GLAMORGAN, SOUTH WALES, 8 miles (S. S. E.) from Merthyr-Tydvil, containing 577 inhabitants. The parochial church is situated in this hamlet, which forms the western portion of the parish. It has much elevated ground, rising above the left bank of the Taf, the western base of which is skirted by that river and the canal and road from Merthyr- Tydvil to Cardiff, which run within a few yards of each other. The river and canal are crossed by bridges on the road to Aberdare; and immediately adjoining, the canal is conveyed over the Tif by a well-executed aqueduct. Many respectable residences lie scattered in different parts of the hamlet. A rail-road extends from the canal here across the road, near the Navigation House, and up the vale between this hamlet and the parish of Gellygaer, to some collieries in the neighbourhood.