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To Ernst Haeckel   9 March 1864

Summary

Thanks for paper ["Über die Entwicklungstheorie Darwins", Amtl. Ber. Versamml. Dtsch. Naturforsch. Aerzte 38 (1863): 17–30]. Delighted EH confirms his views. Many in England afraid to express views openly.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  9 Mar 1864
Classmark:  Ernst-Haeckel-Haus (Bestand A–Abt. 1: 1–52/3)
Letter no:  DCP-LETT-4422

Matches: 1 hit

To Ernst Haeckel   30 March [1868]

Summary

Now understands importance of swim-bladder in selachians. Always imagined animal like Lepidosiren was parent form of vertebrates.

Has been nearly a month in London, collecting facts on sexual selection from breeders and at Zoological Gardens.

Astonished at hybrid of rabbit and hare. Is it certain that work was done with hare?

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  30 Mar [1868]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/17)
Letter no:  DCP-LETT-6070

Matches: 1 hit

To Ernst Haeckel   20 September 1874

Summary

Thanks for 5th edition of his book [Natürliche] Schöpfungsgeschichte.

CD continues with his experiments on the digestive power of plants, which is much like that of mammals.

Is also preparing a revised edition of Descent.

Would welcome hearing more of his ideas about Pangenesis.

Postscript about Anthropogenie, which has just arrived. EH’s astonishing productivity.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  20 Sept 1874
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/31)
Letter no:  DCP-LETT-9647A

Matches: 1 hit

To Ernst Haeckel   4 July [1867]

Summary

Congratulates EH on approaching marriage.

Sorry he will not visit in autumn.

Glad EH is re-examining Protoamoeba but puzzled to think what he can find.

Describes newspaper account of criticism by Agassiz of Generelle Morphologie.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  4 July [1867]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1-52/15)
Letter no:  DCP-LETT-5578

Matches: 1 hit

To Ernst Haeckel   23 June [1870]

Summary

Comments on new edition of EH’s book [Natürliche Schöpfungsgeschichte, 2d ed. (1870)].

Mentions his own book [Descent].

Visit by Kölliker.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  23 June [1870]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/24)
Letter no:  DCP-LETT-7241

Matches: 1 hit

To Ernst Haeckel   27 December 1871

Summary

Refers to priest who believes in "our ape-like progenitors".

EH’s work on sponges.

Pangenesis.

Describes new edition of Origin [6th]

and his work on plant crossing.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  27 Dec 1871
Classmark:  Ernst-Haeckel-Haus, Friedrich-Schiller-Universität, Jena (Bestand A Abt. 1–52/26)
Letter no:  DCP-LETT-8121

Matches: 1 hit

To Ernst Haeckel   20 December 1872

Summary

Comments on EH’s forthcoming [Die Kalkschwämme (1872)].

Thinks EH is working much too hard.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  20 Dec 1872
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1-52/28)
Letter no:  DCP-LETT-8688

Matches: 1 hit

To Ernst Haeckel   25 September 1873

Summary

Comments on EH’s Natürliche Schöpfungsgeschichte [4th ed.].

Has written paper on rudimentary structures ["Complemental males of certain cirripedes", (1873) Collected papers 2: 177–82].

Edward Morse thinks brachiopods should be classed with annelids ["The systematic position of the Brachiopoda", Proc. Boston Soc. Nat. Hist. 15 (1873): 315–73].

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  25 Sept 1873
Classmark:  Ernst-Haeckel-Haus, Friedrich-Schiller-Universität, Jena (Bestand A-Abt. 1: 1-52/30)
Letter no:  DCP-LETT-9068

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

To Ernst Haeckel   3 July 1868

Summary

Thanks for two small works.

Will read essay on man [Entstehung des Menschengeschlechts] with much interest.

Generelle Morphologie reviewed by G. Bentham ["Anniversary Address", Proc. Linn. Soc. Lond. (1867–8): lviii–c].

Extremely sceptical of hare–rabbit hybrid.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  3 July 1868
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1:1–52/18)
Letter no:  DCP-LETT-6265

Matches: 2 hits

  • Darwin, C. R. Haeckel, Ernst …
  • r Conrad? Did he witness the copulation? Forgive my extreme scepticism. — My health has been worse lately & if I can travel, I shall soon go to the sea for 5 or 6 weeks. — With most kind & cordial feelings towards you, | believe me, yours very sincerely | C.  Darwin

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

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

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

Matches: 1 hit

To Ernst Haeckel   6 February [1868]

Summary

Delighted to hear of success of EH’s lectures.

Ernest Faivre [La variabilité des espèces (1868)] sees no reason to favour common descent of allied species.

Asks EH to pass German edition of Variation on to Gegenbaur.

Comments on work of Miklucho[-Maclay], Dohrn, and Bleek.

Has begun work on Descent.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  6 Feb [1868]
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/16)
Letter no:  DCP-LETT-5841

Matches: 1 hit

To Ernst Haeckel   19 November 1868

Summary

Congratulates EH on birth of child.

Mentions projected translation of Generelle Morphologie.

Comments on EH’s last book [Natürliche Schöpfungsgeschichte]. Criticises EH’s statements on palaeontology.

Author:  Charles Robert Darwin
Addressee:  Ernst Philipp August (Ernst) Haeckel
Date:  19 Nov 1868
Classmark:  Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1–52/20)
Letter no:  DCP-LETT-6466

Matches: 1 hit

Document type
letter[X]
Author
Addressee
Correspondent
Darwin, C. R. (97)
Haeckel, Ernst[X]
Date
1863 (1)
1864 (9)
1865 (2)
1866 (7)
1867 (6)
1868 (12)
1869 (4)
1870 (2)
1871 (4)
1872 (5)
1873 (4)
1874 (4)
1875 (5)
1876 (10)
1877 (2)
1878 (2)
1879 (9)
1880 (3)
1881 (6)
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