From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
7 Nov 1868
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/19)
Summary:
Thanks for [Natürliche] Schöpfungsgeschichte [1868]. "What an indomitable worker you are."
Agrees with EH’s Entstehung des Menschengeschlechts [1868].
Contributor:
Darwin Correspondence Project