On a reference to the Geological Maps of the Ordnance Survey of the Counties of Radnor and Hereford, it will be seen that the line of junction of the Old Red Sandstone with the Ludlow rocks proceeds in a north-easterly direction from the Painscastle Hills to Kington, and thence skirts the range of hills which run in the direction of Shobdon and Richards Castle, to Ludlow. The present notice will be mainly confined to an account of the junction-beds in the neighbourhood of Kington. At Kington a tongue-like portion of red sandstone runs out northwardly from the general mass to Bradnor Hill. The extreme point of it is marked on the Geological Survey Map as Tilestone. The quarry from which the remains hereafter mentioned were obtained is situated on this spot, between Bradnor Farm and the Quarry House. The lane which leads from Newton to Bradnor Hill in the direction of the quarry affords a good section of the beds which here immediately underlie the tilestone.