Sun glowing through thin clouds—not just whiter, brighter, as a bygone ad for laundry soap once put it. The nasal call of a nuthatch. A slight breath of wind and a black birch at the woods’ edge divests itself of another hundred leaves.

With most of the forest understorey bare, one can see so much more through the trees: a full moon setting in the west, a flock of geese, the white tail of a deer retreating like a ghost into the dark mountain laurel bushes.

“October’s bright blue weather” continues. As it warms up, I take great, greedy breaths of the autumn air, laden with geosmin and other earthy compounds associated with fermentation and decay. A mid-morning blast from the limestone quarry two miles away shakes the house.