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Haeckel, Ernst in correspondent 
1860-1869::1869 in date 
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DCP-LETT-6812

From:
Ernst Philipp August (Ernst) Haeckel
To:
Charles Robert Darwin
Date:
2 July 1869
Source of text:
DAR 166: 52
Summary:

Comments on 5th edition of the Origin [1869];

preparation of second edition of Natürliche Schöpfungsgeschichte [1870].

The reception of CD’s theory. Mentions support of Pieter Harting and Michael Sars.

EH’s research on calcareous sponges and plans to publish monograph on them.

Contributor:
Darwin Correspondence Project

DCP-LETT-6850

From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
3 Aug [1869]
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/22)
Summary:

Suggests Englishmen who might provide sponge specimens.

Contributor:
Darwin Correspondence Project

DCP-LETT-6917

From:
Ernst Philipp August (Ernst) Haeckel
To:
Charles Robert Darwin
Date:
29 Sept 1869
Source of text:
DAR 166: 53
Summary:

Thanks CD for assistance concerning sponge specimens. Mentions Englishmen who have sent specimens. J. S. Bowerbank has not answered requests.

Sends articles dealing with sponges and Medusae. Cites passages for CD to read. Suggests passages from Entwicklungsgeschichte der Siphonophoren [1869].

Describes meeting with Sars and his trip to Norway.

Contributor:
Darwin Correspondence Project

DCP-LETT-6924

From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
3 Oct [1869]
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/23)
Summary:

Mentions views of Sars on species.

EH’s work on Siphonophora.

Contributor:
Darwin Correspondence Project
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