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From Alfred Russel Wallace   7 February 1868

Summary

Thanks for Variation.

Reports work on his travel book [The Malay Archipelago (1869)].

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  7 Feb 1868
Classmark:  DAR 106: B48
Letter no:  DCP-LETT-5848

To A. R. Wallace   22 February [1868]

Summary

Reports work on sexual selection. Problems with the relative numbers of the two sexes and polygamy. Asks ARW’s help with several questions on polygamous birds.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  22 Feb [1868]
Classmark:  The British Library (Add MS 46434: 104–5)
Letter no:  DCP-LETT-5912

From A. R. Wallace   24 February 1868

Summary

Responds to CD’s queries on polygamy in birds and orang.

Discusses sexual selection and secondary characters; colours and sexual preference.

Expresses his admiration for Pangenesis; it is superior to Herbert Spencer’s theory.

ARW differs somewhat with CD’s chapter on causes of variability [ch. 22 in Variation]. Thinks several of CD’s arguments are unsound.

Briefly discusses how natural selection might aid in producing sterility between allied species.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  24 Feb 1868
Classmark:  DAR 106: B70–2, DAR 86: A10–11
Letter no:  DCP-LETT-5922

To A. R. Wallace   27 February [1868]

Summary

Pleased by ARW’s response to Pangenesis.

On negative reception by his friends.

Further argument concerning sterility and natural selection.

Polygamy and sexual selection.

Protection.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  27 Feb [1868]
Classmark:  The British Library (Add MS 46434: 108–11)
Letter no:  DCP-LETT-5940
Document type
letter (4)
Addressee
Correspondent
Darwin, C. R. (4)
Wallace, A. R.[X]
Date
1868
02
07 (1)
22 (1)
24 (1)
27 (1)
letter