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 |
To Ernst Haeckel 19 July [1864]
Summary
Thanks for praise [of Origin].
Comments on EH’s Die Radiolarien.
Grieved EH has suffered calamity [death of Anna Sethe Haeckel].
CD recovering from long illness.
Doing easy botanical work.
Mentions variability.
Discusses reception of CD’s views in Germany.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 19 July [1864] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1-52/4) |
Letter no: | DCP-LETT-4569 |
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 |
To Ernst Haeckel [after 10] August – 8 October [1864]
Summary
Can understand EH’s feelings on death of his wife.
CD was impressed by manner in which species in South America are replaced by closely allied ones, by affinity of species inhabiting islands near S. America, and by relation of living Edentata and Rodentia to extinct species. When he read Malthus On population, the idea of natural selection flashed on him.
Agrees with EH’s remarks on Kölliker ["Darwin’sche Schöpfungstheorie", Z. Wiss. Zool. 14 (1864): 174–86].
Asks EH to thank Carl Gegenbaur [for Vergleichende Anatomie der Wirbelthiere (1864)].
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | [after 10] Aug – 8 Oct [1864] |
Classmark: | Ernst-Haeckel-Haus (Bestand A–Abt. 1: 1–52/5) |
Letter no: | DCP-LETT-4631 |
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 |
To Ernst Haeckel 21 November [1864]
Summary
Sends Living Cirripedia [vol. 2].
Has employed translator for Fritz Müller’s book [Für Darwin (1864)].
Thanks for paper and speech.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 21 Nov [1864] |
Classmark: | Ernst-Haeckel-Haus (Bestand A–Abt. 1: 1–52/6) |
Letter no: | DCP-LETT-4676 |
From Ernst Haeckel 11 November 1865
Summary
Has heard from Huxley that CD has been ill.
Progress on his book [Generelle Morphologie (1866)] has been slow.
Has been named "ordentlicher Professor". Has 150 listeners in his lectures on CD’s theory.
Thanks CD for copy [of "Climbing plants"].
Sends his book [Beiträge zur Naturgeschichte der Hydromedusen, 1. Heft: Die Familie der Rüsselquallen (Geryonidae) (1865)] and two articles.
Calls attention to a new rhizopod from Nice.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 11 Nov 1865 |
Classmark: | DAR 166: 40 |
Letter no: | DCP-LETT-4934 |
To Ernst Haeckel 6 December [1865]
Summary
Not surprised at delay of his book [Generelle Morphologie (1866)].
P. M. Duncan taking side of evolution.
Has received paper on Geryonidae ["Über eine neue Form des Generationswechsels bei den Medusen", Monatsber. K. Akad. Wiss. Berlin (1865): 85–94]. Had often speculated on whether such a case ever occurred in nature.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 6 Dec [1865] |
Classmark: | Ernst-Haeckel-Haus (Bestand A–Abt. 1: 1–52/7) |
Letter no: | DCP-LETT-4947 |
From Ernst Haeckel 11 January 1866
Summary
Comments on CD’s health.
Discusses origin of life and differentiation of principal classes of plants and animals.
Discusses Generelle Morphologie and its chapter on embryological development.
His lectures on CD’s theory.
Asks CD for larger portrait of himself and for several copies of the small photograph. Will send photographs of German scientists in exchange.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 11 Jan 1866 |
Classmark: | DAR 166: 41 |
Letter no: | DCP-LETT-4973 |
To Ernst Haeckel 20 January [1866]
Summary
Sends copies of photographs of himself. Asks for photographs of German naturalists.
Comments on EH’s account of Protogenes primordialis.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 20 Jan [1866] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/8) |
Letter no: | DCP-LETT-4980 |
From Ernst Haeckel 28 January 1866
Summary
Discusses exchange of photographs with German scientists.
Comments on attitudes of German scientists toward CD’s theory.
Names several scientists who exchanged photographs: Braun, Virchow, Leydig, and Dohrn.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 28 Jan 1866 |
Classmark: | DAR 166: 42 |
Letter no: | DCP-LETT-4985 |
To Ernst Haeckel 1 February 1866
Summary
Thanks for photographs [of German scientists].
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 1 Feb 1866 |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/9) |
Letter no: | DCP-LETT-4990 |
To Ernst Haeckel 18 August [1866]
Summary
Comments on sheet of EH’s Generelle Morphologie [1866]. In emphasising divergence of character EH shows his clear understanding of CD’s views. It was years before CD saw necessity of divergence.
Interested in Carl Claus [Copepodenfauna von Nizza (1866)].
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 18 Aug [1866] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1-52/10) |
Letter no: | DCP-LETT-5193 |
To Ernst Haeckel [20 October 1866]
Summary
Explains how to get to Down for visit.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | [20 Oct 1866] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/11) |
Letter no: | DCP-LETT-5224 |
From Ernst Haeckel 19 October 1866
Summary
Will visit CD on Sunday, 21 October.
Will spend winter in research on Madeira and Tenerife.
CD will soon receive copy of Generelle Morphologie.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 19 Oct 1866 |
Classmark: | DAR 166: 43 |
Letter no: | DCP-LETT-5248 |
To Ernst Haeckel 8 January 1867
Summary
Comments on EH’s "great work" [Generelle Morphologie].
An English translation "hopeless".
Asks about EH’s expedition.
MS of Variation sent to printers.
Fritz Müller working on plants.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 8 Jan 1867 |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/12) |
Letter no: | DCP-LETT-5349 |
To Ernst Haeckel 12 April [1867]
Summary
Struck by singular clarity of EH’s Generelle Morphologie. Remarks on various authors seem too severe. Severity leads the reader to take the side of the attacked person.
Making slow progress in correcting Variation.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 12 Apr [1867] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1–52/13) |
Letter no: | DCP-LETT-5500 |
From Ernst Haeckel 12 May 1867
Summary
Thanks CD for new edition of Origin [4th ed. (1866)].
Comments on CD’s criticism of the harsh tone of Generelle Morphologie. Thinks he may have harmed himself but not the cause. Believes a radical reform of the science necessary, and since most scientists take a prejudiced view of the matter, a vigorous attack is essential.
Describes his travels in Canaries, Spain, and France.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 12 May 1867 |
Classmark: | DAR 166: 44 |
Letter no: | DCP-LETT-5533 |
To Ernst Haeckel 21 May [1867]
Summary
Discusses his previous criticisms of EH’s Generelle Morphologie. Fears it will make enemies.
Discusses reception of descent theory in England.
Mentions EH’s trip to Canary Islands.
Author: | Charles Robert Darwin |
Addressee: | Ernst Philipp August (Ernst) Haeckel |
Date: | 21 May [1867] |
Classmark: | Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/14) |
Letter no: | DCP-LETT-5544 |
From Ernst Haeckel 28 June 1867
Summary
Is engaged to marry Agnes Huschke. Will make wedding trip to Switzerland and Italy in autumn; therefore cannot visit CD as hoped.
Discusses present research. Comments on Protoamoeba with respect to origin of life. Says it makes question of common or separate origin of phyla unimportant.
CD to receive honorary diploma from Imperial Zoological Botanical Society in Vienna.
Sends photograph of Viennese botanist, August Kanitz.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 28 June 1867 |
Classmark: | DAR 166: 45 |
Letter no: | DCP-LETT-5576 |
letter | (98) |
Darwin, C. R. | (53) |
Haeckel, Ernst | (44) |
Darwin, Emma | (1) |
Wedgwood, Emma | (1) |
Haeckel, Ernst | (54) |
Darwin, C. R. | (44) |
Haeckel, Ernst | (98) |
Darwin, C. R. | (97) |
Darwin, Emma | (1) |
Wedgwood, Emma | (1) |