Thoreau writes in his journal:
Grew cold again last night, with high wind. The wind began about midday. I think a high wind commonly follows rain or a thaw in winter. The thermometer at 8.30 A.M. is at zero. (At 1 P.M., 8º+.). This fall of 42° from 8.30 A.M. yesterday to the same time to-day has produced not a thin and smooth, but a very firm and thick, uneven crust, on which I go in any direction across the fields, stepping over the fences; yet there is some slosh at the bottom of the snow, above the icy foundation . . .