From Ernst Haeckel [before 6 February 1868]
Summary
Describes his lectures on CD’s theory.
Thanks CD for copy of Variation. Comments on book.
Describes work of two protégés in Jena: Nicolas von Miklucho[-Maclay] and Anton Dohrn.
His cousin, Wilhelm Bleek, is sending an article about the origin of language.
Asks to keep book a few months longer but will return it if CD needs it [Webb and Berthelot, Histoire naturelle des Îles Canaries, vol. 3, pt 1: Géographie botanique (1840)].
Describes research on Siphonophora.
Describes life in Jena. Mentions alpine accident during wedding trip.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | [before 6 Feb 1868] |
Classmark: | DAR 166: 46 |
Letter no: | DCP-LETT-5840 |
From Ernst Haeckel 23 March 1868
Summary
Has received English edition of Variation. First volume of German edition came three months ago. Comments on book.
Will send copy of recent lectures on human evolution [Entstehung des Menschengeschlechts (1868)]. Gegenbaur much interested in the subject.
Considers Selachius the ancestral form of the fish and hence of all higher vertebrates. Believes their swim-bladder became lung of amphibians.
Mentions cases of hybrid crosses between rabbits and hares producing fertile offspring.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 23 Mar 1868 |
Classmark: | DAR 166: 47 |
Letter no: | DCP-LETT-6040 |
From Ernst Haeckel 22 June 1868
Summary
Thanks CD for article by G. H. Lewes ["Mr Darwin’s hypotheses, pt 1", Fortn. Rev. n.s. 3 (1868): 353–73]. Comments on article.
Describes hybridisation experiment carried out on rabbits and hares by Dr Conrad.
Encloses description of Monera
and a phylogenetic table of vertebrates.
Mentions work on Medusae.
The controversy over CD in Germany.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 22 June 1868 |
Classmark: | DAR 166: 48 |
Letter no: | DCP-LETT-6255 |
From Ernst Haeckel 17 July 1868
Summary
Comments on CD’s health.
Has received gold medal from Dutch Academy of Science for Zur Entwicklungsgeschichte der Siphonophoren [1869].
His Entstehung des Menschengeschlechts [1868] has been sharply attacked by the clergy.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 17 July 1868 |
Classmark: | DAR 166: 49 |
Letter no: | DCP-LETT-6280 |
From Ernst Haeckel 9 November 1868
Summary
Thanks CD for comments [on Entstehung des Menschengeschlechts].
Comments on Goethe and Kant as early evolutionists.
Describes birth of his son. Mentions child’s "atavisms".
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 9 Nov 1868 |
Classmark: | DAR 166: 50 |
Letter no: | DCP-LETT-6452 |
From Ernst Haeckel 25 November [1868]
Summary
Comments on experience of being a father.
Discusses possible English edition of Generelle Morphologie. Mentions necessary revisions.
Thanks CD for comment on Natürliche Schöpfungsgeschichte.
Discusses problem of assigning specific times to origin of classes.
Author: | Ernst Philipp August (Ernst) Haeckel |
Addressee: | Charles Robert Darwin |
Date: | 25 Nov [1868] |
Classmark: | DAR 166: 51 |
Letter no: | DCP-LETT-6474 |