Contributions to the Theory of Natural Selection by Alfred Russel Wallace
= Contributions to the Theory of Natural Selection by Alfred Russel Wallace
{c}
{title2=linked second edition, 1871}
https://www.gutenberg.org/files/22428/22428-h/22428-h.htm
The preface identifies essay II, On the Tendency of Varieties to Depart Indefinitely from the Original Type, as first published in 1858 and reprinted with only grammatical emendations. Later essays and notes must not be silently dated to 1858.