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SIBERIA
symptoms which he described were peculiar effects of the Írtish valley heat, but it was evidently sunstroke that he had seen.
At the station of Voronínskaya, in the middle of this parched desert, we were overtaken by a furious hot sand-
UPPER ÍRTISH VALLEY AND FOOT-HILLS OF THE ALTÁI.
storm from the southwest, with a temperature of 103° in the shade. The sand and fine hot dust were carried to a height of a hundred feet, and drifted past us in dense, suffocating clouds, hiding everything from sight and making it almost impossible to breathe. Although we were riding
