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To Alfred Russel Wallace   23 February 1867

Summary

Asks why caterpillars are sometimes beautifully coloured. It poses a problem for view that sexual selection is the explanation of colours of male butterflies.

More on mimetic butterflies.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  23 Feb 1867
Classmark:  Marchant ed. 1916, 1: 178
Letter no:  DCP-LETT-5415

From A. R. Wallace   24 February [1867]

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Summary

Protective role of colours in caterpillars and butterflies. Sexual differences in colours of butterflies.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  24 Feb [1867]
Classmark:  DAR 82: A19–21
Letter no:  DCP-LETT-5416

To A. R. Wallace   26 February [1867]

Summary

ARW’s explanation of protective value of conspicuous coloration is ingenious.

CD still holds to sexual selection with respect to beauty in male butterflies.

Sexual selection and the races of man.

Expression of emotions is another subject he plans to include in his essay [Descent].

Asks ARW to suggest an observer in Malay Archipelago to whom he might send queries [on expression].

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  26 Feb [1867]
Classmark:  The British Library (Add 46434, f. 76)
Letter no:  DCP-LETT-5420
Document type
letter (3)
Addressee
Correspondent
Darwin, C. R. (3)
Wallace, A. R.[X]
Date
1867
02
23 (1)
24 (1)
26 (1)
letter