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From J. D. Hooker   [11 April 1857]

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Summary

JDH cites W. H. Harvey’s observations on Fucus and David Don’s on Juncus as examples of variations that are independent of climate. There are many such cases. Gives his working scheme for categorising variation.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [11 Apr 1857]
Classmark:  DAR 104: 198–201
Letter no:  DCP-LETT-2074
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letter (1)
Author
Hooker, J. D.disabled_by_default
Addressee
Correspondent