The soil of Russia depends chiefly on the distribution of the boulder-clay and loess.
It does not evaporate or turn rancid, whilst its marked hygroscopic action ensures the moistness and softness of any surface that it covers.
Any change which a substance may chance to undergo was simply due to the discarding or taking up of some proportion of the primary " elements " or qualities: of these coverings " water," " air," " earth " and " fire " were regarded as clinging most tenaciously to the essence, while " cold," " heat," " moistness " and " dryness " were more easily cast aside or assumed.
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