Beyond Caermarthenshire is Pembrokeshire, forming the western extremity of the Welsh peninsula. The river Cleddan, flowing south-westward, broadens at its mouth into the estuary known as Milford Haven. It receives a western branch, on the side of which is the county-town, Haverfordwest, placed on a hill where the De Clares founded a castle, of which little now remains but the keep, used (as so many of them now are) as the county-jail. Cromwell demolished this castle after it fell into his hands. The great promontory of St. David's Head juts out into the sea sixteen miles to the westward. The Cleddan flows down between the towns of Pembroke and Milford. The ruins of Pembroke Castle upon a high rock disclose an enormous circular keep, seventy-five feet high and one hundred and sixty-three feet in circumference. It was begun in the eleventh century, and was the birthplace of Henry VII. in 1456. Here Cromwell was repulsed in 1648, but the fortress was secured for the Parliament after six weeks' siege. The garrison were reduced to great straits, but were only subdued by the skilful use of artillery in battering down the stairway leading to the well where they got their water: the spring that supplied them is still there. Pembroke has extensive trade, and its shipbuilding dockyard covers eighty acres. Opposite this dockyard is Milford, the harbor being a mile and a half wide. The railway from London runs down to the pier, and passengers are transferred to steamers for Ireland, this being the terminus of the Great Western Railway route, two hundred and eighty-five miles from the metropolis. Milford Haven, at which we close this descriptive journey, stretches for ten miles inland from the sea, varying from one to two miles in breadth, affords ample anchorage, and is strongly fortified. The ancient Pictou Castle guards the junction of the two branches of the Cleddan above Milford, while Carew Castle stands on a creek entering Milford Haven on the south-eastern shore, and is an august though ruined relic of the baronial splendors of the Middle Ages. It well represents the condition of most of the seacoast castles in this part of Wales, of one of which Dyer has written. "His sides are clothed with waving wood, And ancient towers crown his brow. That cast an awful look below; Whose rugged sides the ivy creeps, And with her arms from falling keeps. 'Tis now the raven's bleak abode; 'Tis now th' apartment of the toad; And there the fox securely feeds. And there the poisonous adder breeds, Concealed in ruins, moss, and weeds; While ever and anon there fall Huge heaps of hoary, mouldered wall. Yet time has seen, that lifts the low And level lays the lofty brow,-- Has seen this broken pile complete, Big with the vanity of state;-- But transient is the smile of fate." VII. LONDON, SOUTH-WEST TO LAND'S END.