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İngilizce İngilizce Yunanca

15 It is reasonable that the lower portion of large rivers should not freeze; for the upper portion, being frozen, does not transmit the exhalation which is, accordingly, shut in and turned back, and so provides heat for the deep waters. A demonstration of this is the fact that when the ice melts again a great quantity of vapour rises from the waters. This is also the reason why the bodies of animals are warmer in the winter, because the heat is driven inwards by the cold from without and they keep it within them.

15 Now drawing off water and suspending it in the airCf. 949 f supra; Mor. 690 b-e. not only takes away its warmth, but its coldness also; those, therefore, who want a very cold drink take care not to disturb the snowpacksCf. Mor. 691 c - 692 a for snow packed in chaff and the like. or the wet matter that is formed from them by compression, for movement expels both heat and cold.