Of Irgana-kon, (Abulghazi Khan, Hist. Genealogique des Tatars, P ii. c. 5, p. 71 - 77, c. 15, p. 155.) The tradition of the Moguls, of the 450 years which they passed in the mountains, agrees with the Chinese periods of the history of the Huns and Turks, (De Guignes, tom. i. part ii. p. 376,) and the twenty generations, from their restoration to Zingis.