The Naturalist on the River Amazons

by Henry Walter Bates

"The Naturalist on the River Amazons" by Henry Walter Bates is a travel and natural history book published in 1863. It chronicles Bates's eleven-year expedition through the Amazon basin, where he and Alfred Russel Wallace sought new species and evidence for evolution. Bates collected over 14,000 species, discovering Batesian mimicry through butterfly observations. The book blends natural history with vivid descriptions of wildlife behavior, indigenous societies, and Brazilian life along the river, offering readers both scientific discovery and adventure without dwelling heavily on evolutionary theory.