Thoreau writes in his journal:
At Clamshell Shore, I see a clam lying up with open valves . . . Coming back, I talk with Witherell at William Wheeler’s landing. He comes pushing Wheeler’s square-ended boat down-stream with a fish-spear. Says he caught a snapping turtle in the river May 1st. He sits on the side of my boat by the shore a little while, talking with me . . .