A frog reckons that he knows where the brook is.

July 4. 

P. M. — To Fair Haven Pond, measuring depth of river.

Walking beside a ditch or brook, you see alarmed frogs launching themselves a considerable distance into the brook. They spring upward to clear all intervening obstacles, and seem to know pretty well where the brook is. 


A frog reckons that he knows where the brook is.

The deepest place I find in the river to-day is off Bittern Cliff, answering to the bold shore. There is an uninterrupted deep and wide reach of the river from Fair Haven Pond to Nut Meadow Brook.

H.D. Thoreau, Journal, July 4, 1859