Mr. Madocks, after having succeeded in this arduous undertaking, set about the still more difficult one of throwing an embankment across the mouth of the Traeth Mawr; as an inducement for the accomplishing of which, a grant was made to him from the crown, in 1807, of the whole of these sands, from Pontaber-glasllyn to the point of Gêst. The length of the embankment, from north to south, would be about a mile; its breadth at the base one hundred feet, at the top thirty. The whole of this has been completed to within one hundred yards in the centre, and it is to be hoped this noble work will still be accomplished: funds only seem now necessary for its completion: strong chain cables extended across the opening, and hulks then sunk and filled would soon allow them to finish the embankment. After seeing those in North Holland nothing is to be despaired of. Long faggots, from seven to ten feet, straw, rushes, and sand are the best sea-walls, sloping them gradually for the rise of the tide. Those in Holland seemed constantly to have been increased by the action of the sea, instead of having been diminished. CRICCAETH is a small borough and market town. Its population is now about four hundred: it, jointly with Caernarvon, &c. sends a member to parliament. Its ruined castle is not unworthy of attention; it stands on an eminence projecting into the sea, and the entrance to it by land, being only along an isthmus, defended by a double foss and vallum, it must formerly have been strong. The gateway is between two towers, or bastions, externally round, but square within; the facings of which are ascribed to Edward the First: the other towers are entirely square. There have been two courts, but neither of them large, nor indeed has the whole castle been a building of any other than small extent. It is now in a ruinous state. The view from the ruins over the bay to Haerlech is beautiful. In the neighbourhood of Pwllheli are several respectable family seats; and the country in its vicinity is generally better cultivated than the rest of the promontory: the town itself is irregular and unpleasant; but it carries on a good coasting trade, and vessels of considerable burthen are here built. The petty sessions for the district of Llyn are held here; it is likewise contributory to Caernarvon, in sending a member to parliament. Along the coast to Bardsey Island, a considerable trade in fishing is carried on. Herrings frequent this coast in great abundance, and are very fine: some are cured here, and quantities sold to the Irish. Here likewise are taken both john dories and smelts; the former of which was rejected by the fishermen on the score of its ugliness.