Thoreau writes in his journal:
P.M.—To Walden.
Storm drawing to a close. Crickets sound much louder after the rain in this cloudy weather . . .
Paddled round the pond . . . Both fishes and plants are clean and bright, like the element they live in. Viewed from a hilltop, it is blue in the depths and green in the shallows, but from a boat it is seen to be a uniform dark green . . .
Thoreau references passages in Walden (pp. 196, 198) and A Week on the Concord and Merrimack Rivers (pp. 276, 279-280).