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To Sven Nilsson   31 October [1868]

Summary

Thanks SN for the reference about the reindeer, received via Hooker.

CD wishes to ascertain whether there is any relation between the period of development of a character and its transmission to one sex alone.

Author:  Charles Robert Darwin
Addressee:  Sven Nilsson
Date:  31 Oct [1868]
Classmark:  Lund University Library Special Collections (Sven Nilsson papers)
Letter no:  DCP-LETT-6438

From Sven Nilsson   31 December 1868

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Summary

On the development of horns in Lapland reindeer. [See Descent 1: 288.]

Author:  Sven Nilsson
Addressee:  Charles Robert Darwin
Date:  31 Dec 1868
Classmark:  DAR 86: A41–2
Letter no:  DCP-LETT-6517
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