[188] [Excursions, p. 316; Riv. 388, 389.]
[189] [Walden, p. 308; Riv. 432.]
[190] [Excursions, p. 316; Riv. 389.]
[191] [Bigelow, American Medical Botany, vol. i.]
[192] [Bigelow, American Medical Botany, vol. i.]
[193] [Excursions, p. 221; Riv. 271.]
[194] [Excursions, p. 328; Riv. 403.]
[195] [The first mention in the Journal of a bird the identity of which Thoreau seems never to have made out. See Journal, vol. i, Introduction, p. xlvi.]
[196] [That is, Darwin.]
[197] [Walden, p. 14; Riv. 22.]