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n'Og, the Country of Perpetual Youth. She had fallen in love with Oisin, as the strange Italian lady is said to have done with a poet of whose existence we are somewhat better assured than of Oisin's; and she invited him to accompany her to her own realm and share her throne. Oisin was not long in making up his mind, and all the delights of Tir na n'Og were laid at his feet. In one part of the palace garden, however, was a broad flat stone, on which he was forbidden to stand, under penalty of the heaviest misfortune. Probably, as is usual in these cases, if he had not been forbidden, he would never have thought of standing on it. But one day finding himself near it, the temptation to transgress was irresistible. He yielded, and stepping on the stone he found himself in full view of his native land, the very existence of which he had forgotten till that moment. Even in the short space of time since he left it much had changed: it was suffering from oppression and violence. Overcome with grief, he hastened to the queen and prayed for leave to go back, that he might help his people. The queen tried to dissuade him, but in vain. She asked him how long he supposed he had been absent. Oisin told her: "Thrice seven days." She replied that three times thrice seven years had passed since he arrived in Tir na n'Og; and though Time could not enter that land, it would immediately assert its dominion over him if he left it. At length she persuaded him to promise that he would return to his country for one day only, and then come back to dwell with her for ever. She accordingly gave him a beautiful jet-black horse, from whose back he was on no account to alight, or at all events not to allow the bridle to fall from his hand; and in parting she gifted him with wisdom and knowledge far surpassing that of men. Mounting the steed, he soon found himself near his former home; and as he journeyed he met a man driving a horse, across whose back was thrown a sack of corn.