Russia possesses large deposits of sulphur in Daghestan in Transcaucasia, and in the Transcaspian steppes.
The higher parts of the plains, which are deeply trenched by the upper tributaries of the rivers, are inhabited by various Caucasian races - Kabardians and Cherkesses (Circassians) in the west, Ossetes in the middle, and several tribal elements from Daghestan, described under the general name of Chechens, in the east.
But the main axis of the transverse upheavals would appear to be continued in a north-eastern direction in the Andi and other parallel ranges of Daghestan, as stated under Caucasus.
Of the total population 3,725,543 lived in northern Caucasia and 5,564,547 in Transcaucasia (including Daghestan).
Naphtha is also obtained, though in much smaller quantities, in Terek and Kuban, in Tiflis and Daghestan.