Very heavy rain in the night; cooler now.
P. M. - to Walden.
Examined an Asclepias Cornuti pod, already opening by the wall. As they dry, the pods crack and open by the seam along the convex or outer side of the pods, revealing the seeds, with their silky parachutes, closely packed in an imbricated manner, already right side up to the number, in one instance, of one hundred and thirty-four (as I counted) and again two hundred and seventy. As they lie they resemble somewhat a round plump fish with the silk ends exposed at the tail. Children call them fishes. The silk is divided once or twice by their raised partitions of the spongy core around which they are arranged. At the top of some more open and drier, is already a little cloud os loosened seeds and down, two or three inches in diameter, held by the converging tips of the down like meridians, just ready to float away when the wind rises.