Thoreau writes in his journal:
Topping corn now reveals the yellowing pumpkins. Dangle-berries very large in shady copses now; seem to love wet weather; have lost their bloom. Aster undulatus. The decurrent gnaphalium has not long shown yellow. Perhaps I made it blossom a little too early.
September is at hand; the first month (after the summer heat) with a burr to it, month of early frosts; but December will be tenfold rougher. January relents for a season at the time of its thaw, and hence that liquid r in its name.