perished in the waters by the flowing of the tide. This tragedy has been carried down to posterity by a plaintive Welsh melody, called _Morva Rhuddlan_, the notes of which are amongst the most touching and deeply-pathetic of Cambrian minstrelsy. Having traced Offa’s Dyke, it is necessary to describe the course of WATT’S DYKE, as the space between these two great lines of demarcation was deemed neutral ground both by the Britons and their invaders, and subsequently, during the Norman period, became part of what is denominated the MARCHES, although it is difficult to define correctly the precise extent of territory they occupied. Watt’s Dyke is supposed by various writers to have been constructed anterior to the time of Offa. Its course is marked by Pennant as follows:— “It appears at Maesbury, in the parish of Oswestry, and terminates at the river Dee, below Basingwerk Abbey. The southern end of the line is lost in morassy grounds; but was probably continued to the river Severn. It extends its course from Maesbury to the Mile Oak [on the old road from Oswestry to Shrewsbury]; from thence through a field [now belonging to Edward Williams, Esq., Solicitor, of Oswestry], called _Maes-y-garreg-llwyd_, between two remarkable pillars of unhewn stone [strongly resembling Druidic altar stones]; passes by the town [below the Shelf-bank’ Field], and from thence to Old Oswestry, and by Pentreclawdd to Gobowen, the site of a small fort called _Bryn-y-Castell_, in the parish of Whittington; runs by Prys Henlle and Belmont; crosses the Ceiriog, between Brynkinallt and Pont-y-blew Forge, and the Dee, below Nant-y-Bela; from whence it passes through Wynnstay Park, by another Pentreclawdd, to Erddig, where there was a strong fort on its course; from Erddig it runs above Wrexham, near Melin Puleston, by Dolydd, Maesgwyn, Rhos-ddû, Croes-oneiras, &c.; goes over the Alûn, and through the township of Llai, to Rhydin, in the county of Flint, above which is _Caer-estyn_, a British post; from hence it runs by Hope church along the side of Molesdale, which it quits towards the latter place, and turns to Mynydd Sychdyn, Monachlog, near Northop, by Northop Mills, Bryn-Moel, Coed-y-Llys, Nant-y-Flint, Cefn-y-Coed, through the Strand Fields, near Holywell, to its termination below the Abbey of Basingwerk.”