From here the two natural highways lead, one to the head-waters of the Black irtish, the other to the passes leading into the Ili valley, and other routes of the Arolo-Caspian depression.
"Across Asia on a Bicycle"
Thomas Gaskell Allen and William Lewis Sachtleben
They at last found a place of refuge on the banks of the River irtish.
"Genghis Khan, Makers of History Series"
Jacob Abbott
Then, hearing where they were and what they were doing, he prepared an expedition to penetrate into the country of the irtish and attack them.
"Genghis Khan, Makers of History Series"
Jacob Abbott
