could obtain a distant view of the islands of Japan. There she gave herself up to grief until death put an end to her misery. In 413 a new king came to the throne of Ko-gu-ryŭ. called Kö-ryŭn. As China and Ko-gu-ryŭ had been kept apart by the intervening Yun, and had acquired some power of sympathy through mutual fear of that power, we are not surprised that the new king of Ko-gu-ryŭ condescended to receive investiture from the Emperor, nor that the latter condescended in turn to grant it. It was formally done, and the act of Ko-gu-ryŭ proclaimed her vassalage to China. From that time on excepting when war existed between them, the kings of Ko-gu-ryŭ were invested by the Emperor with the insignia of royalty. Two years later the Emperor conferred the same honor upon the king of Păk-je. It was always China’s policy to keep the kingdoms at peace with each other so long as they all wore the yoke of vassalage; but so soon as one or the other cast it off it was her policy to keep them at war. In 417 Nul-ji came to the throne of Sil-la and began a reign that was to last well on toward half a century. He was a regicide. He had been treated very harshly by the king and had more than once narrowly escaped with his life. It is therefore the less surprising, though none the less reprehensible, that when the opportunity presented of paying off old scores he succumbed to the temptation. He ascended the throne not with the title of I-sa-geum, which had been the royal title for centuries, but with the new title of Ma-rip-kan. However doubtful may have been his title to the crown his reign was a strong one. Among the far-reaching effects of his reign the introduction of carts to be drawn by oxen was the most important. The friendly relations of Ko-gu-ryŭ with the Tsin dynasty were cut short by the extinction of that dynasty in 419 but in 435 Ko-gu-ryŭ made friendly advances toward the Northern Wei dynasty and, finding sufficient encouragement, she transferred her allegience to that power. Meantime Păk-je had transferred hers to the Sung dynasty which arose in 420.