Sept. 3—Cloudy and wet, and wind due east; air without palpable fog, but very heavy with moisture—welcome for a change. Forenoon, crossing the Delaware, I noticed unusual numbers of swallows in flight, circling, darting, graceful beyond description, close to the water. Thick, around the bows of the ferry-boat as she lay tied in her slip, they flew; and as we went out I watch'd beyond the pier-heads, and across the broad stream, their swift-winding loop-ribands of motion, down close to it, cutting and intersecting. Though I had seen swallows all my life, seem'd as though I never before realized their peculiar beauty and character in the landscape. (Some time ago, for an hour, in a huge old country barn, watching these birds flying, recall'd the 22d book of the Odyssey, where Ulysses slays the suitors, bringing things to eclaircissement, and Minerva, swallow-bodied, darts up through the spaces of the hall, sits high on a beam, looks complacently on the show of slaughter, and feels in her element, exulting, joyous.)