Signed to inside end page on both volumes- From Bates 1863. original publisher's cloth, Two volumes. 8vo. viii, [ii], 351; vi, 423 pp. Separate frontispieces, with tissue guards, 7 full-page illustrations plus numerous text illustrations and 1 folding map. CONDITION: VERY GOOD+. Covers are excellent except for some minor marks and some wear to the rear joint of volume I (see very last photo). Bindings sound and square. Endpapers remarkably intact. Internally excellent with no foxing or previous names. Small stain to the edge of first few leaves of vol I. An excellent set of a title that's very hard to find in good original cloth.The Naturalist on the River Amazons, is Henry Walter Bates account of his expedition to the Amazon Basin. Bates and his friend Alfred Russel Wallace set out to obtain new species and new evidence for evolution by natural selection, as well as exotic specimens to sell. He explored thousands of miles of the Amazon and its tributaries, and collected over 14,000 species, of which 8,000 were new to science. His observations of the coloration of butterflies led him to discover Batesian mimicry. On Bates's return to England, he was encouraged by Charles Darwin to write up his eleven-year stay in the Amazon as a book. The result was widely admired, not least by Darwin; other reviewers sometimes disagreed with the book's support for evolution, but generally enjoyed his account of the journey, scenery, people, and natural history. The superb illustrations, by several artists, are remarkable in that they often picture the author as well as the people and animals encountered (see some examples below). We are selling an entire first and early edition collection of Darwin and other Victorian naturalist. in many cases we have several copies of the same Darwin titles in similar condition, including presentation copies. Please ask for a complete catalogue.