Ice at Walden

February 25. 

Ice at Walden eleven inches thick and very soggy, sinking to a level with the water, though there is but a trifling quantity of snow on it. Does it not commonly begin to be soggy even thus early, and thick, sinking deeper? 

I hear of sudden openings in ponds — as at Cochituate — this year.

H. D. Thoreau, Journal, February 25, 1858

Ice at Walden eleven inches thick. See February 18, 1858 (“I find Walden ice to be nine and a half plus inches thick, having gained three and a half inches since the 8th”); February 8, 1858 (“I am surprised to find that Walden ice is only six inches thick, or even a little less, and it has not been thicker.”) See  also. February 24, 1857 (“Walden is still covered with thick ice, though melted a foot from the shore.”); February 16, 1856 (“Near the shore in one place it was twenty-two inches.”)