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To Alexander Agassiz   1 [June] 1881

Summary

Thanks AA for letter on coral reefs. "I used to think … that areas of elevation and of subsidence must – as a general rule be separated by a single great line of fissure, or rather of several".

Suggests that AA urge again his views on reappearance of old characters.

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  1 [Jun] 1881
Classmark:  DAR 143: 10
Letter no:  DCP-LETT-12965

From Alexander Agassiz   16 April 1881

Summary

Is mapping coral distribution on the Tortugas reef. His observations on the Florida peninsula suggest that it was built up from the debris of animal remains and was not elevated.

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  16 Apr 1881
Classmark:  Agassiz (1913): 281–2
Letter no:  DCP-LETT-13122

To Alexander Agassiz   5 May 1881

Summary

Responds to comments on geology of Florida.

Discusses coral reefs and paper by John Murray ["On the structure and origin of coral reefs and islands", Proc. R. Soc. Edinburgh 10 (1880): 505–18].

Comments on AA’s paper ["Paleontological and embryological development", Proc. Am. Assoc. Adv. Sci. 29 (1880): 389–414].

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  5 May 1881
Classmark:  DAR 143: 11
Letter no:  DCP-LETT-13145

From Alexander Agassiz   19 May 1881

Summary

Discusses the structure and formation of the Florida peninsula. Part played by marine animals in building banks on which coral can thrive.

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  19 May 1881
Classmark:  Agassiz (1913): 284–6
Letter no:  DCP-LETT-13166

To Alexander Agassiz   [23 October 1870?]

Summary

Suggests time for AA to visit.

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  [23 Oct 1870?]
Classmark:  DAR 143: 7
Letter no:  DCP-LETT-6595

From Alexander Agassiz   22 October 1870

Summary

Asks whether he may see CD before leaving England.

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  22 Oct 1870
Classmark:  G. R. Agassiz ed. 1913, p. 113
Letter no:  DCP-LETT-7349

From Alexander Agassiz   [before 1 June 1871]

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Summary

Instances of sexual differences in viviparous fishes, suggested by reading chapters on sexual selection [in Descent] and by Mivart’s Genesis of species.

Notes on echinoderms.

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  [before 1 June 1871]
Classmark:  DAR 69: A43–6 DAR 89: 29–31
Letter no:  DCP-LETT-7415

To Alexander Agassiz   1 June [1871]

Summary

Discusses homologies in various animal groups.

Comments on Mivart [Genesis of species].

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  1 June [1871]
Classmark:  DAR 143: 8
Letter no:  DCP-LETT-7793

To Alexander Agassiz   28 August [1871]

Summary

Thanks AA for a ‘splendid case of gradation of structure’.

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  28 Aug 1871
Classmark:  Sotheby’s, New York (dealers) (13 December 2018, lot 236)
Letter no:  DCP-LETT-7918G

To Alexander Agassiz   10 September [1871 or 1873]

Summary

Discusses exchange of books.

Author:  Charles Robert Darwin
Addressee:  Alexander Agassiz
Date:  10 Sept [1871 or 1873]
Classmark:  DAR 143: 9
Letter no:  DCP-LETT-7932

From Alexander Agassiz   4 March 1872

Summary

Thanks for new [6th] edition of Origin.

Is working on Echini.

The more material he gets the less easy it is to diagnose a genus or species. Has little doubt that "classification is nothing but the most arbitrary convenient tool, depending upon the material at our command at a special time".

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  4 Mar 1872
Classmark:  G. R. Agassiz ed. 1913, p. 119
Letter no:  DCP-LETT-8236

From Alexander Agassiz   9 December 1872

Summary

Thanks for Expression.

Has lost a year’s work in the fire that has devastated Boston.

Author:  Alexander Agassiz
Addressee:  Charles Robert Darwin
Date:  9 Dec 1872
Classmark:  G. R. Agassiz ed. 1913, pp. 120–1
Letter no:  DCP-LETT-8667
Document type
letter (12)
Correspondent
Date
1870 (2)
1871 (4)
1872 (2)
1881 (4)
letter