Now they were steadily racing on again. And soon Edmund noticed that the snow which splashed against them as they rushed through it was much wetter than it had been all last night. At the same time he noticed that he was feeling much less cold. It was also becoming foggy. In fact every minute it grew foggier and warmer. And the sledge was not running nearly as well as it had been running up till now. […] The sledge jerked, and skidded and kept on jolting as if it had struck against stones. And however the dwarf whipped the poor reindeer the sledge went slower and slower. There also seemed to be a curious noise all round them, but the noise of their driving and jolting and the dwarf's shouting at the reindeer prevented Edmund from hearing what it was, until suddenly the sledge stuck so fast that it wouldn't go on at all. When that happened there was a moment's silence. And in that silence Edmund could at last listen to the other noise properly. […] All round them though out of sight there were streams, chattering, murmuring, bubbling, splashing and even (in the distance) roaring. And his heart gave a great leap (though he hardly knew why) when he realized that the frost was over.