[96] This is a work of _Naśer eddin Túsi_ (about whom, see vol. II. p. 417, note 2, and p. 449). He was the favorite minister of Hulagu Khan, whose arms he had successfully directed against Baghdad and the Khalif. The Khan, after his conquests, took up his residence at _Maragha_, in _Aderbigan_; there he assembled philosophers and astronomers to cultivate science, under the direction of Nâśer eddin. In our days the place is still shown where the observatory of this astronomer was situated, and where he compiled the astronomic tables, known under the name of _Jal-khanní_. [97] Jangis Khan had four sons, whose rank of seniority is differently stated by different authors, and among whom he divided his vast empire. _Octáyi_ was to rule all the countries of the Moghuls, Kathayans, and others extending towards the East. He died in the year of the Hejira 639 (A.D. 1241). _Châtayí_ was to possess Mawer ul nahir, Turkistan, Balkh, and Badakhshan. He died in the year of the Hejira 638 (A.D. 1240). _Jují_ was to reign over Desht, Kapchak, Kharizm, Khizer, Bulgaria, Lokmin, Alan, As, Russia, and the northern countries. He died in Hejira 624 (A.D. 1226), during his father’s life. _Tuli Khan_ received for his share Khorassan, India, and Persia; he died soon after his father; but his sons, Manjuka, Koblai, and Hulagú became celebrated in history. [98] Jangis Khan, during his terrific career, in the fourteenth year of slaughter, devastation, and conquest, fell upon the empire of Kharism and Ghazni. Muhammed of the Seljuks was driven from all his possessions, and died a fugitive. He had before divided his empire between his four sons, to one of whom _Jelál eddin_, he had assigned Kharizm, Khorassan, Mazinderan, Ghazni, Bamian, Ghor, Bost Takanad, Zamigdand, and all the Indian provinces. This prince, retiring before superior forces towards Ghazni, gained two battles over the Moghuls, but was at last obliged to fly to the banks of the Indus. There, closely pressed by the enemies, who murdered his captive son seven years old before his eyes, he threw his mother, wife, and the rest of his family, at their own desire, into the water, and then swam, with a few followers, across the river, before his admiring pursuers, who followed him no further.