p. xxxviii–xxxix: Richard Spruce in a letter to Daniel Hanbury.
(February the 10th, 1873)

The Hepaticæ are by no means a ‚little family.‘ They are so abundant and beautiful in the tropics, and in the Southern Hemisphere generally, that I think no botanist could resist the temptation to gather them. […]
I like to look on plants as sentient beings, which live and enjoy their lives - which beautify the earth during life, and after death may adorn my herbarium.

Notes of a botanist on the Amazon & Andes being records of travel on the Amazon and its tributaries, the Trombetas, Rio Negro, Uaupés, Casiquiari, Pacimoni, Huallaga, and Pastasa; as also to the cataracts of the Orinoco, along the Eastern side of the Andes of Peru and Ecuador, and the shores of the Pacific, during the years 1849-1864 by Richard Spruce Ph.D. edited and condensed by Alfred Russell Wallace, O.M., F.R.S. with a biographical introduction portrait, seventy-one illustrations and seven maps. Macmillan and Co., Limited, St… Martin’s Street, London 1908. Vol. 1. [i–ii], portr., [iii]–lii, 1–518, maps, figs. 1–49.