Thoreau writes in his journal:
Ministerial Swamp, P. M. It is 10 1/2 feet high, 2 1/2 inches [in] diameter just above ground, and has 21 rings, 1/17 inch to a ring. . . .
Last night and to-day are very cold and blustering. Winter weather has come suddenly this year. The house was shaken by wind last night, and there was a general deficiency of bedclothes. This morning some windows were as handsomely covered with frost as ever in winter . . .