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From Ernst Haeckel   6 June 1875

Summary

Comments on Fritz Schultze, Kant und Darwin [1875].

Describes recent activities.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  6 June 1875
Classmark:  DAR 166: 64
Letter no:  DCP-LETT-10012

From Ernst Haeckel   7 November 1875

Summary

Thanks CD for Climbing plants and Insectivorous plants.

Discusses his research on phylogeny. Results described in "Die Gastrula und die Eifurchung der Tiere" [Jena. Z. Naturw. 9 (1875): 402–508].

Describes newly discovered coral.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  7 Nov 1875
Classmark:  DAR 166: 65
Letter no:  DCP-LETT-10246

To Ernst Haeckel   13 November 1875

Summary

Mentions receipt of EH’s History of creation [1876].

Describes his own work on cross- and self-fertilised flowers. Subject bears on the very principle of life.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  13 Nov 1875
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/34 [9887])
Letter no:  DCP-LETT-10257

To Ernst Haeckel   25 November 1875

Summary

Has read EH’s History of creation [trans. E. R. Lankester (1875)]. Was much struck with many "brilliant & original remarks". Is gratified by the way EH speaks of CD’s books.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  25 Nov 1875
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/35 [9888])
Letter no:  DCP-LETT-10276

From Ernst Haeckel   13 January 1876

Summary

Sends copy of Arabische Korallen [1876].

Comments on reception of his paper on "Gastrula" [see 10012].

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  13 Jan 1876
Classmark:  DAR 166: 66
Letter no:  DCP-LETT-10356

To Ernst Haeckel   15 January [1876]

Summary

Thanks EH for Arabische Korallen [1876].

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  15 Jan [1876]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 36 [9889])
Letter no:  DCP-LETT-10358

To Ernst Haeckel   21 January [1876]

Summary

EH’s Arabische Korallen is spirited, clear, and poetical. With respect to formation of islands, thinks EH lays too much stress on views of Ehrenberg. Admires drawings.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  21 Jan [1876]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 37 [9890])
Letter no:  DCP-LETT-10363

From Ernst Haeckel   31 January and 1 February 1876

Summary

Thanks CD for comments on Arabische Korallen [1876].

Comments on Monoenia darwinii [?] as a primitive sponge.

Discusses criticisms of CD’s theory by K. E. von Baer ["Über Darwin’s Lehre", in Reden 2 (1876): 235–480].

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  31 Jan and 1 Feb 1876
Classmark:  DAR 166: 67
Letter no:  DCP-LETT-10375

From Ernst Haeckel   9 May 1876

Summary

Sends Die Perigenesis der Plastidule [1876]. Comments on CD’s theory of Pangenesis. Explains his own theory of Perigenesis.

Returns Webb and Berthelot, Îles Canaries; Géographie botanique [1840].

Describes work on 3d ed. of Anthropogenie.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 May 1876
Classmark:  DAR 166: 68
Letter no:  DCP-LETT-10501

To Ernst Haeckel   14 May 1876

Summary

Book [Webb and Berthelot] has reached CD.

Sorry EH dissents from Pangenesis.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  14 May 1876
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 38 [9891])
Letter no:  DCP-LETT-10506

To Ernst Haeckel   12 August 1876

Summary

Glad EH is coming to England.

Will be visiting eldest son in Southampton in September [but visit apparently delayed until 7 Oct, see "Journal"].

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  12 Aug 1876
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 39 [9892])
Letter no:  DCP-LETT-10577

To Ernst Haeckel   16 September 1876

Summary

Discusses death of his daughter-in-law

and possible visit by EH.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  16 Sept 1876
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 40 [9893])
Letter no:  DCP-LETT-10601

From Ernst Haeckel   30 December 1876

Summary

Describes new journal, Kosmos, to be edited by Ernst Krause. Asks CD to lend his name to journal.

Has sent Anthropogenie, 3d ed.

Will send his study [Biologische Studien, pt 2: Studien zur Gastraea-theorie (1877)] in January.

Thanks CD for hospitality at Down.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  30 Dec 1876
Classmark:  DAR 166: 69
Letter no:  DCP-LETT-10738

To Ernst Haeckel   31 December 1876

Summary

Thanks for EH’s Anthropogenie, 3d ed.

Sends Cross and self-fertilisation.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  31 Dec 1876
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/ 42 [9895])
Letter no:  DCP-LETT-10739

From Ernst Haeckel   9 February 1877

Summary

Sends birthday wishes. Album of photographs from German admirers has been sent.

Plans trip to Mediterranean.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 Feb 1877
Classmark:  DAR 166: 70
Letter no:  DCP-LETT-10835

To Ernst Haeckel   16 February 1877

Summary

Thanks EH for album of photographs of German scientists.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  16 Feb 1877
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/43 [9896])
Letter no:  DCP-LETT-10847

From Ernst Haeckel   9 February 1878

Summary

Sends birthday wishes.

Discusses his work on the Challenger [expedition] Radiolaria.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 Feb 1878
Classmark:  DAR 166: 71
Letter no:  DCP-LETT-11348

To Ernst Haeckel   12 February [1878]

Summary

Thanks EH for birthday greetings.

Mentions his work on movement of plants.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  12 Feb [1878]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/44 [9897])
Letter no:  DCP-LETT-11354

From Ernst Haeckel   9 February 1879

Summary

Sends birthday wishes.

Comments on progress of CD’s theory in Germany. Mentions opposition of Rudolf Virchow and his reply Freie Wissenschaft und freie Lehre [1878].

Describes research trip to Brittany and Normandy.

Research on Challenger Radiolaria.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 Feb 1879
Classmark:  DAR 166: 72
Letter no:  DCP-LETT-11865

To Ernst Haeckel   12 February 1879

Summary

Thanks for kind letter.

Has not yet read EH’s article in Kosmos ["Einstämmiger und vielstämmiger Ursprung", 4 (1878–9): 360–76].

Rudolf Virchow affair lamentable. Virchow’s conduct inexplicable.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  12 Feb 1879
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/46 [A 9900])
Letter no:  DCP-LETT-11872
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