From:
Charles Robert Darwin
To:
Julius Victor Carus
Date:
4 May 1869
Source of text:
Staatsbibliothek zu Berlin – Preußischer Kulturbesitz (Slg. Darmstaedter Lc 1859: Darwin, Charles, Bl. 41–42)
Summary:
Discusses changes in 5th edition of Origin owing to new evidence. CD now places more value on action of external conditions; thinks lapse of time [required for development of species] not so great as some geologists have thought, and single variations [saltations] of even less importance compared with individual differences.
Contributor:
Darwin Correspondence Project