The Foundations of the Origin of Species Two Essays written in 1842 and 1844
Charles Darwin · 1909
This 1909 book, edited by Francis Darwin, publishes two early essays his father wrote in 1842 and 1844 setting out ideas on variation, selection, and the common descent of species, predating the publication of On the Origin of Species.
Public domain in the US. From Project Gutenberg.
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