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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   [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
Document type
letter (4)
Correspondent
Agassiz, Alexanderdisabled_by_default
Darwin, C. R.disabled_by_default