
Language
en
Duration
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Publisher of text edition
Project Gutenberg
Credits
Produced by Giovanni Fini, Marilynda Fraser-Cunliffe, David Garcia and the Online Distributed Proofreading Team at http://www.pgdp.net (This book was produced from images made available by the HathiTrust Digital Library.)
Release date
2015-07-16
Rights
Public domain in the USA.

1848–1894
A close friend and defender of Charles Darwin, this 19th-century scientist helped shape early thinking about animal intelligence, evolution, and the relationship between mind and body. His writing blends careful observation with big, lively questions that still feel modern.
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