The territory which is the subject of this report is situated in central Siberia immediately south of the Great Siberian Railway between latitudes 52 degrees and 56 degrees North and longitude 86 degrees and 98 degrees East (from Greenwich). As shown on the sketch map (figure 1) the Yenissei River flows through the middle of the area from south to north.
The middle part of this territory, named the Minussinsk basin, represents an undulating steppe, drained by the Yenissei, the Abakan and the Tchulym rivers, tributary to the Ob.1
To the west rises the Kuznetsk Alatau Range, drained by the left tributaries of the Yenissei River and the right tributaries of the Tom River. This strongly dissected massif is covered by a dense forest (taiga), the mountains in its central part (in the upper courses of the rivers Tchulym and Tom) rise above the timberline, and their slopes . . .