During 1867 Darwin intensified lines of research on human expression and sexual selection.

This volume is part of the definitive edition of letters written by and to Charles Darwin, the most celebrated naturalist of the nineteenth century. Notes and a

The year leading up to the publication of Descent of Man, Darwin's first treatment of human evolution.

Charles Darwin: A Reference Guide to His Life and Works provides an important new compendium presenting a detailed chronology of all aspects Darwin’s life. Th