A prosaic historian, however, declares that in all likelihood the King Arthur legend sprang from Roman ruins which some hundreds of years ago existed in Caerleon in great magnificence. At any rate, modern Caerleon has no trace of the regal capital of the early king--a bald, unattractive town close upon the Usk, now broadened into a considerable stream, dull with the taint from the manufactories on its banks. At Newport we are entering a different order of things, brought about by the great industrial development in South Wales due to the coal and iron mines and large shipping interests. In the last century the population of the town has grown from one to seventy thousand. The old order is indeed dead here. There is no effort to attract the tourist, and the castle, almost the sole relic of antiquity, is crumbling into unhindered ruin as it sits far above the drear expanse of mud left by the receding tide. We hasten through the town--we may see a hundred such at home--and seek from a friendly policeman the road to Caerphilly, a village off in the hills which we know has no new-world counterpart. For ten miles from Newport we wend our way over a dusty, ill-kept byroad with sharp turns and steep grades, and before we come to the village we see from some distance the broken towers and battlements of Caerphilly Castle. We pass through the gateway in the straggling walls and the scene of desolation and massive ruin that lies before us is hardly paralleled in impressiveness among British castles, unless it be by Corfe in Dorset. A great round tower, perhaps fifty feet in diameter, with walls ten feet thick, split as by a thunder stroke, greets our eyes. Half of it is still standing, though leaning many feet from the vertical, and the other half lies in mighty fragments of masonry at its base. There had been four such towers, but only one is comparatively entire. The walls, though much shattered in places, still serve to give an idea of the vast extent of the ancient castle. The huge banqueting hall has been roofed and recalls in a rather pathetic way the rude magnificence of its feudal state. [Illustration: CAERPHILLY CASTLE, SOUTH WALES.]