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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

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

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

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

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

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

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

From Ernst Haeckel   12 July 1879

Summary

Thanks CD for comments on Freie Wissenschaft und freie Lehre [1878].

Describes work on Medusae.

Describes work on Challenger Radiolaria and publication plans.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  12 July 1879
Classmark:  DAR 166: 73
Letter no:  DCP-LETT-12148

From Ernst Haeckel   30 August 1879

Summary

Accepts invitation to visit Down.

Describes travel plans in Scotland.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  30 Aug 1879
Classmark:  DAR 166: 75
Letter no:  DCP-LETT-12205

From Ernst Haeckel    3 September 1879

Summary

Arranges to visit Down.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  3 Sept 1879
Classmark:  DAR 166: 74
Letter no:  DCP-LETT-12215

From Ernst Haeckel   9 February 1880

Summary

Sends birthday wishes.

Discusses work on Medusae.

Recalls visit to Down.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 Feb 1880
Classmark:  DAR 166: 76
Letter no:  DCP-LETT-12467

From Ernst Haeckel   9 February 1881

Summary

Sends birthday wishes.

Comments on Movement in plants.

Sends System der Ascrapeden [1880].

Describes work on Challenger Medusae.

Comments on success of CD’s theory.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 Feb 1881
Classmark:  DAR 166: 77
Letter no:  DCP-LETT-13043

From Ernst Haeckel   21 June 1881

Summary

Plans visit to Ceylon.

Describes rejection of his application for funds by Berlin Academy. Asks about possibility of obtaining support in England. Is writing to Lubbock and Huxley about it.

Hopes that new microscope from Zeiss is satisfactory. Ernst Abbe selected lenses.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  21 June 1881
Classmark:  DAR 166: 78
Letter no:  DCP-LETT-13213

From Ernst Haeckel   1 July 1881

Summary

Thanks CD for offer of financial support. Discusses application for funds for Ceylon trip.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  1 July 1881
Classmark:  DAR 166: 79
Letter no:  DCP-LETT-13228

From Ernst Haeckel   2 January 1864

Summary

Returns letter mailed by mistake [see 4361].

Hopes CD will accept gift of his Radiolarien [Die Radiolarien, 2 vols. (1862)].

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  2 Jan 1864
Classmark:  DAR 166: 36
Letter no:  DCP-LETT-4377

From Ernst Haeckel   9 [July 1864]

Summary

No book has made such a powerful impression on EH as the Origin. Most older German scholars opposed to it, but number of supporters growing among the young. Fortunately strength of religious dogmas now small among educated Germans. Situation in Jena especially favourable. Defended CD’s theory last year at Congress of German Scientists in Stettin.

Intends special study of jellyfish.

Plans general work on natural history.

Hard fate [death of Anna Sethe Haeckel] has made EH indifferent to criticism.

Colleagues August Schleicher and Carl Gegenbaur also convinced by CD’s theory.

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  9 [July 1864]
Classmark:  DAR 166: 35
Letter no:  DCP-LETT-4555

From Ernst Haeckel   10 August 1864

Summary

Sends photographs of himself and his late wife [Anna Sethe]. Describes death of his wife.

Plans trip to the Alps.

Thanks CD for biographical information about himself.

Mentions Goethe as early evolutionist.

Cites Kant as early supporter of epigenesis.

Mentions criticism of CD’s theory by R. A. von Kölliker ["Über die Darwin’sche Schöpfungstheorie", Z. Wiss. Zool. 14 (1864): 174–86].

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  10 Aug 1864
Classmark:  DAR 166: 38
Letter no:  DCP-LETT-4586

From Ernst Haeckel   26 October 1864

Summary

Thanks CD for notes concerning the development of his ideas about the origin of species. Says August Schleicher and Carl Gegenbaur also interested.

Names new supporters of CD’s theory, including Max Schultze, Rudolf Leuckart, and Alexander Braun. Zoologists have been more interested than botanists.

He is writing a general work on the relationships among animals [Generelle Morphologie der Organismen (1866)].

Comments on Fritz Müller’s Für Darwin [1864].

Gegenbaur is revising his Grundzüge der vergleichenden Anatomie [2d ed. (1870)] to accord with evolution.

Thanks CD for copy of book on balanids [Living Cirripedia, vol. 2].

Author:  Ernst Philipp August (Ernst) Haeckel
Addressee:  Charles Robert Darwin
Date:  26 Oct 1864
Classmark:  DAR 166: 39
Letter no:  DCP-LETT-4646
Document type
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Darwin, C. R.disabled_by_default
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Haeckel, Ernstdisabled_by_default
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1865 (1)
1866 (3)
1867 (2)
1868 (6)
1869 (2)
1870 (1)
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1873 (2)
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1875 (2)
1876 (4)
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