‘But one day said Heilyn, the son of Gwyn: “Evil betide me if I do not open the door to know if that is true which is said concerning it.” So he opened the door and looked towards Cornwall and Aber Henvelen. And when they had looked, they were as conscious of all the evils they had ever sustained, and of all the friends and companions they had lost, and of all the misery that had befallen them, as if all had happened in that very spot; and especially of the fate of their lord. And because of their perturbation they could not rest, but journeyed forth with the head towards London. And they buried the head in the White Mount.’ Arthur afterwards, in his pride and self-confidence, disinterred the head, and this was one of ‘the three unhappy disclosures of the island of Britain.’ There is evidently mixed here, with the newer legend, a _detritus_, as the geologists would say, of something far older; and the secret of Wales and its genius is not truly reached until this _detritus_, instead of being called recent because it is found in contact with what is recent, is disengaged, and is made to tell its own story. But when we show him things of this kind in the Welsh remains, Mr. Nash has an answer for us. ‘Oh,’ he says, ‘all this is merely a machinery of necromancers and magic, such as has probably been possessed by all people in all ages, more or less abundantly. How similar are the creations of the human mind in times and places the most remote! We see in this similarity only an evidence of the existence of a common stock of ideas, variously developed according to the formative pressure of external circumstances. The materials of these tales are not peculiar to the Welsh.’ And then Mr. Nash points out, with much learning and ingenuity, how certain incidents of these tales have their counterparts in Irish, in Scandinavian, in Oriental romance. He says, fairly enough, that the assertions of Taliesin, in the famous _Hanes Taliesin_, or _History of Taliesin_, that he was present with Noah in the Ark, at the Tower of Babel, and with Alexander of Macedon, ‘we may ascribe to the poetic fancy of the Christian priest of the thirteenth century, who brought this romance into its present form. We may compare these statements of the universal presence of the wonder-working magician with those of the gleeman who recites the Anglo-Saxon metrical tale called the _Traveller’s Song_.’ No doubt, lands the most distant can be shown to have a common property in many marvellous stories. This is one of the most interesting discoveries of modern science; but modern science is equally interested in knowing how the genius of each people has differentiated, so to speak, this common property of theirs; in tracking out, in each case, that special ‘variety of development,’ which, to use Mr. Nash’s own words, ‘the formative pressure of external circumstances’ has occasioned; and not the formative pressure from without only, but also the formative