A Narrative of Travels on the Amazon and Rio Negro, with an Account of the Native Tribes, and Observations on the Climate, Geology, and Natural History of the Amazon Valley

Focusing on his extensive travels, the narrative details Alfred Russel Wallace's observations of the Amazon and Rio Negro, where he spent four years studying the local inhabitants, wildlife, and environment. Inspired by contemporary naturalists, Wallace collected specimens and documented the region's geography, flora, and fauna. His experiences during this period significantly shaped his thoughts on evolution, leading to his co-development of the theory of natural selection alongside Charles Darwin. This work highlights his pivotal role in evolutionary science.