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To H. B. Tristram   4 June 1868

Summary

Asks about camouflage of birds in the Sahara desert.

Author:  Charles Robert Darwin
Addressee:  Henry Baker Tristram
Date:  4 June 1868
Classmark:  Private collection
Letter no:  DCP-LETT-6227F

To H. B. Tristram   4 July 1868

Summary

Thanks for interesting letter. ‘How very curious the case of the bright-coloured birds which conceal themselves in holes!’

Author:  Charles Robert Darwin
Addressee:  Henry Baker Tristram
Date:  4 July 1868
Classmark:  The British Library (Surrogate RP 9485)
Letter no:  DCP-LETT-6267G

To H. B. Tristram   8 September 1868

Summary

Thanks for answers to questions, but declines loan of specimens.

Author:  Charles Robert Darwin
Addressee:  Henry Baker Tristram
Date:  8 Sept 1868
Classmark:  The British Library (Surrogate RP 9485)
Letter no:  DCP-LETT-6356F

From Henry Baker Tristram   6 June 1868

Summary

Will answer CD’s queries when he returns home in a month.

Author:  Henry Baker Tristram
Addressee:  Charles Robert Darwin
Date:  6 June 1868
Classmark:  DAR 178: 193
Letter no:  DCP-LETT-6234

From H. B. Tristram   1 July 1868

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Summary

On the coloration of 26 species of Saharan birds.

Author:  Henry Baker Tristram
Addressee:  Charles Robert Darwin
Date:  1 July 1868
Classmark:  DAR 84.1: 93–4, 97
Letter no:  DCP-LETT-6262

From H. B. Tristram   5 September 1868

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Summary

Sexual differences in plumage of birds; various species compared.

Author:  Henry Baker Tristram
Addressee:  Charles Robert Darwin
Date:  5 Sept 1868
Classmark:  DAR 84.1: 95–6
Letter no:  DCP-LETT-6351
Document type
letter (6)
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Correspondent
Darwin, C. R.disabled_by_default
Tristram, H. B.disabled_by_default