Thoreau writes in his journal:
Maywecd, say 27th. At Ludwigia Pokc-logan, a cinder-like spawn in a white, frothy jelly . A green bittern, apparently, awkwardly alighting on the trees and uttering its hoarse, zarry note, zskeow-xskeow-xskeow . . .
Thoreau also sends a letter, books, and a cicada specimen he found 13 June to Thaddeus William Harris, librarian at Harvard College Library and entomological expert. Harris replies 27 June (The Correspondence of Henry David Thoreau, 329).
